chore: bump version to 0.22.2

This reverts commit 49cc7e0317.

.env.example

@@ -22,3 +22,11 @@ NODE_ENV=development
 # AUTH_OIDC_CLIENT_ID=
 # AUTH_OIDC_CLIENT_SECRET=
 # AUTH_OIDC_DISPLAY_NAME=SSO
+
+# --- Email Notifications (optional, auto-enabled when SMTP_HOST is set) ---
+
+# SMTP_HOST=smtp.example.com
+# SMTP_PORT=587
+# SMTP_USER=
+# SMTP_PASS=
+# SMTP_FROM=Crumbs <noreply@example.com>

.github/workflows/ci.yml

@@ -46,11 +46,24 @@ jobs:
           cache: pnpm
 
       - run: pnpm install --frozen-lockfile
-      - run: pnpm test:unit
+      - run: pnpm test:unit:coverage
+
+      - name: Coverage summary
+        if: always()
+        run: bash scripts/coverage-summary.sh "Unit Test Coverage" coverage/unit/coverage-summary.json
+
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: unit-coverage
+          path: coverage/unit/
+          retention-days: 14
 
   e2e-tests:
     name: E2E Tests
     runs-on: ubuntu-latest
+    container:
+      image: mcr.microsoft.com/playwright:v1.58.0-noble
     steps:
       - uses: actions/checkout@v4
 
@@ -65,24 +78,26 @@ jobs:
 
       - run: pnpm install --frozen-lockfile
 
-      - name: Cache Playwright Browsers
-        id: playwright-cache
-        uses: actions/cache@v4
-        with:
-          path: ~/.cache/ms-playwright
-          key: playwright-${{ runner.os }}-${{ hashFiles('pnpm-lock.yaml') }}
-
-      - name: Install Playwright Browsers
-        if: steps.playwright-cache.outputs.cache-hit != 'true'
-        run: npx playwright install --with-deps chromium
-
-      - name: Install Playwright System Dependencies
-        if: steps.playwright-cache.outputs.cache-hit == 'true'
-        run: npx playwright install-deps chromium
+      - name: Build (with coverage instrumentation)
+        run: pnpm build
+        env:
+          DATABASE_URL: ./data/test-crumbs.db
+          NODE_ENV: test
+          VITE_COVERAGE: 'true'
 
       - run: pnpm test:e2e
         env:
           CI: true
+          VITE_COVERAGE: 'true'
+          HOME: /root
+
+      - name: Merge E2E coverage
+        if: always()
+        run: npx nyc report
+
+      - name: Coverage summary
+        if: always()
+        run: bash scripts/coverage-summary.sh "E2E Test Coverage" coverage/e2e/coverage-summary.json
 
       - uses: actions/upload-artifact@v4
         if: always()
@@ -91,7 +106,14 @@ jobs:
           path: |
             playwright-report/
             test-results/
-          retention-days: 30
+          retention-days: 7
+
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: e2e-coverage
+          path: coverage/e2e/
+          retention-days: 14
 
   docker-build:
     name: Docker Build

.gitignore

@@ -32,6 +32,10 @@ vite.config.ts.timestamp-*
 /test-results
 /playwright-report
 
+# Coverage
+/coverage
+.nyc_output
+
 # Claude Code
 /.claude/
 
@@ -40,3 +44,4 @@ todo.md
 
 # Worktrees
 .worktrees/
+package-lock.json

.nycrc.json

@@ -0,0 +1,7 @@
+{
+	"report-dir": "coverage/e2e",
+	"temp-dir": "coverage/e2e/raw",
+	"reporter": ["text", "html", "lcov", "json-summary"],
+	"include": ["src/**"],
+	"exclude": ["node_modules", "tests"]
+}

CLAUDE.md

@@ -98,6 +98,10 @@ tests/
   unit/                # Vitest unit tests
   e2e/                 # Playwright e2e tests (Gherkin-style)
     helpers/fixtures.ts  # Shared authenticatedPage fixture
+website/               # Static landing page (crumbs.bretzel.app)
+  index.html           # Landing page with feature cards, screenshots, deploy section
+  styles.css           # Landing page styles (retro parchment theme)
+  assets/              # Favicon, screenshots
 ```
 
 ## Commands
@@ -159,6 +163,13 @@ GitHub Actions with two workflows:
 
 **Docker**: Multi-stage Dockerfile (node:22-slim), exposes port 3000, persists data to `/data` volume.
 
+## Database schema changes
+
+When adding or modifying tables in `src/lib/server/db/schema.ts`:
+
+- **If the table has a foreign key to `users`**: update `deleteUser()` in `src/lib/server/auth.ts` to delete from the new table before the user row is removed. Order matters — delete child rows before parent rows.
+- **If the table has a foreign key to `notes`**: either add `onDelete: 'cascade'` in the schema definition, or add explicit cleanup in the note deletion logic.
+
 ## Testing philosophy: BDD/TDD
 
 Write tests first or alongside features. Tests serve as living documentation of expected behavior.
@@ -176,6 +187,7 @@ Write tests first or alongside features. Tests serve as living documentation of
 - Test database: `./data/test-crumbs.db` (cleaned via `global-setup.ts`)
 - Auth fixture: `tests/e2e/helpers/fixtures.ts` provides `authenticatedPage` (handles setup/login race conditions across parallel workers)
 - Auth tests use `test.describe.serial` because they depend on sequential database state
+- **Offline/online tests**: After `setOffline(false)`, always manually dispatch the `online` event via `page.evaluate(() => window.dispatchEvent(new Event('online')))` — Playwright doesn't reliably emit it in headless/CI environments, causing flaky `waitForResponse` timeouts
 
 ### Gherkin-style Given/When/Then
 

Makefile

@@ -1,4 +1,5 @@
-.PHONY: help dev build preview check test test-unit test-e2e lint \
+.PHONY: help dev build preview check test test-unit test-e2e \
+	test-unit-coverage test-e2e-coverage lint \
 	db-push db-generate db-migrate db-studio docs-api \
 	install docker-build docker-up docker-down docker-logs clean \
 	release release-patch release-minor release-major
@@ -27,6 +28,12 @@ test-unit: ## Run unit tests only
 test-e2e: ## Run e2e tests only
 	pnpm test:e2e
 
+test-unit-coverage: ## Run unit tests with coverage
+	pnpm test:unit:coverage
+
+test-e2e-coverage: ## Run e2e tests with coverage
+	VITE_COVERAGE=true pnpm build && pnpm test:e2e && npx nyc report
+
 lint: ## Run linter
 	pnpm lint
 

README.md

@@ -46,6 +46,21 @@ volumes:
 
 Google and GitHub OAuth are also supported. See [docs/AUTH.md](docs/AUTH.md) for all providers and setup guides.
 
+#### With Email Notifications (optional)
+
+Add SMTP settings to enable email notifications (share alerts, welcome emails, security alerts):
+
+```yaml
+environment:
+  - SMTP_HOST=smtp.example.com
+  - SMTP_PORT=587
+  - SMTP_USER=your-username
+  - SMTP_PASS=your-password
+  - SMTP_FROM=Crumbs <noreply@example.com>
+```
+
+Auto-enabled when `SMTP_HOST` is set. Users can opt out in Settings > Preferences. See [docs/DEPLOYMENT.md](docs/DEPLOYMENT.md#email-notifications-optional) for details.
+
 ### Manual (Node.js)
 
 ```bash
@@ -75,6 +90,9 @@ pnpm build         # Production build
 - Rich notes with Markdown, checklists, image attachments, and 12 color themes
 - Organize with #tags, pinning, archive, and trash
 - Full-text search across titles, content, and tags
+- Note version history — browse and restore previous versions
+- Share notes with other users on the same instance
+- Email notifications for shares, security alerts, and account events (optional SMTP)
 - PWA — installable, works offline via IndexedDB + LWW CRDT sync
 - MCP server — let AI assistants (Claude Code, etc.) manage your notes
 - Multi-user auth (Argon2) with optional OAuth/SSO (Google, GitHub, OIDC)

docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   crumbs:
-    image: ghcr.io/bretzel-app/crumbs:0.14.0
+    image: ghcr.io/bretzel-app/crumbs:0.22.0
     container_name: crumbs
     ports:
       - "3000:3000"
@@ -11,6 +11,21 @@ services:
       - DATA_DIR=/data
       - DATABASE_URL=/data/crumbs.db
       - ORIGIN=${ORIGIN:-http://localhost:3000}
+      # OAuth / SSO (optional — providers auto-enable when configured)
+      - AUTH_GOOGLE_CLIENT_ID=${AUTH_GOOGLE_CLIENT_ID:-}
+      - AUTH_GOOGLE_CLIENT_SECRET=${AUTH_GOOGLE_CLIENT_SECRET:-}
+      - AUTH_GITHUB_CLIENT_ID=${AUTH_GITHUB_CLIENT_ID:-}
+      - AUTH_GITHUB_CLIENT_SECRET=${AUTH_GITHUB_CLIENT_SECRET:-}
+      - AUTH_OIDC_ISSUER=${AUTH_OIDC_ISSUER:-}
+      - AUTH_OIDC_CLIENT_ID=${AUTH_OIDC_CLIENT_ID:-}
+      - AUTH_OIDC_CLIENT_SECRET=${AUTH_OIDC_CLIENT_SECRET:-}
+      - AUTH_OIDC_DISPLAY_NAME=${AUTH_OIDC_DISPLAY_NAME:-}
+      # Email notifications (optional — auto-enabled when SMTP_HOST is set)
+      - SMTP_HOST=${SMTP_HOST:-}
+      - SMTP_PORT=${SMTP_PORT:-587}
+      - SMTP_USER=${SMTP_USER:-}
+      - SMTP_PASS=${SMTP_PASS:-}
+      - SMTP_FROM=${SMTP_FROM:-}
     restart: unless-stopped
 
 volumes:

docs/DEPLOYMENT.md

@@ -114,6 +114,20 @@ node build
 
 Google, GitHub, and generic OIDC (Authentik, Keycloak, Okta, etc.) are supported. Providers are auto-enabled when their env vars are set. See **[AUTH.md](AUTH.md)** for environment variables, callback URLs, provider-specific setup guides, and troubleshooting.
 
+### Email Notifications (optional)
+
+Email notifications are auto-enabled when `SMTP_HOST` is set. See [FEATURES.md](FEATURES.md#note-sharing--collaboration) for the full list of notification types.
+
+| Variable | Default | Description |
+|----------|---------|-------------|
+| `SMTP_HOST` | — | SMTP server hostname (e.g. `smtp.example.com`) |
+| `SMTP_PORT` | `587` | SMTP port (`587` for STARTTLS, `465` for SSL) |
+| `SMTP_USER` | — | SMTP username (optional for unauthenticated relays) |
+| `SMTP_PASS` | — | SMTP password |
+| `SMTP_FROM` | `Crumbs <noreply@localhost>` | Sender address |
+
+Users can opt out of share notifications in **Settings > Preferences**.
+
 ## Health Check
 
 The Docker image includes a health check that pings `/login`:

docs/FEATURES.md

@@ -91,6 +91,22 @@
 - Share dialog accessible from editor toolbar
 - Collaborators can leave shared notes
 - Shared notes appear mixed in main list alongside owned notes
+- Email notifications (requires SMTP config, opt-out in preferences):
+  - Share notifications when a note is shared with you
+  - Welcome email when admin creates your account
+  - Password reset notification
+  - Account deletion confirmation
+  - Email address change notification
+  - Role change notification (admin/user)
+  - Removed from shared note notification
+  - Shared note permanently deleted notification
+  - Account locked alert (after failed login attempts)
+
+### Note Version History
+- Browse previous versions of any note
+- Versions are automatically saved when content changes
+- Restore any previous version with one click
+- Version snapshots are only created when content actually changes (not on metadata-only updates)
 
 ### Full-Text Search
 - Search across note titles, content, and tags

docs/TESTING.md

@@ -0,0 +1,142 @@
+# E2E BDD Testing Best Practices
+
+This document defines the 10 best practices for writing E2E tests in Crumbs. All tests use Playwright with Gherkin-style BDD comments.
+
+## 1. Declarative scenarios, not imperative scripts
+
+Describe **what** the system does, not **how** the user clicks through the UI.
+
+```
+// Good: "When the user creates a note titled 'Shopping List'"
+// Bad:  "When the user clicks the + button, types 'Shopping List' in the title field, and clicks save"
+```
+
+If the UI changes (button moves, field renames), only the Playwright code changes — the scenario comment stays stable.
+
+## 2. Given describes state, not navigation
+
+`Given` sets up preconditions. It should read like a database fixture, not a user journey.
+
+```
+// Good: "Given a note titled 'Old Note' exists in the trash"
+// Bad:  "Given the user creates a note, then clicks trash, then confirms deletion"
+```
+
+Use API calls or helpers like `createNote()` in `Given` steps to avoid coupling tests to unrelated UI flows.
+
+## 3. One behavior per scenario
+
+Each `test()` should verify **one outcome**. If you need multiple `Then` assertions about different behaviors, split them.
+
+```ts
+// Good: Two focused scenarios
+test('Trashed note disappears from main view', ...)
+test('Trashed note appears in trash view', ...)
+
+// Bad: One bloated scenario testing everything
+test('Trash workflow', ...) // creates, trashes, checks main, checks trash, restores...
+```
+
+## 4. Scenario names describe outcomes, not actions
+
+Name tests by the **observable result**, not the user action that triggers it.
+
+```ts
+// Good: test('Archived note no longer appears in the main view')
+// Bad:  test('User archives a note')
+```
+
+This makes test reports read like a behavior specification.
+
+## 5. Isolate test state completely
+
+Each test should start from a **known, clean state**. Use API-based setup/teardown or the shared `authenticatedPage` fixture.
+
+```ts
+// Use API to create/reset state before each test
+test.beforeEach(async ({ authenticatedPage: page }) => {
+  await page.request.put('/api/preferences', { data: { ... } });
+});
+```
+
+This prevents the "test B fails because test A didn't clean up" problem — especially important since Playwright runs workers in parallel.
+
+## 6. Use `test.describe.serial` only when truly sequential
+
+Reserve `serial` for flows where state genuinely cascades (setup -> login -> session). For everything else, isolate with fixtures. Treat `serial` as a **code smell** — most tests should run in **any order**.
+
+## 7. Abstract repeated UI actions into helpers
+
+When multiple scenarios share the same UI interaction (e.g., "create a note"), extract it into a helper at the **intent level**.
+
+```ts
+// helpers/fixtures.ts
+export async function createNote(page, title, content?) { ... }
+
+// In tests — reads like BDD
+await createNote(page, 'My Note', 'Hello');
+```
+
+The shared `authenticatedPage` fixture and `noteCard()` locator are examples of this pattern. The `createNote()` helper abstracts the 4-step note creation flow used across most test files.
+
+## 8. Apply the resilience test to every comment
+
+Before committing a Gherkin comment, ask: *"Would this comment need to change if we redesigned the UI?"*
+
+- If **yes** — rewrite to remove implementation details
+- If **no** — it's at the right abstraction level
+
+```
+// Fails (mentions hover + button):
+// "When the user hovers the card and clicks the 3-dot menu"
+
+// Passes:
+// "When the user opens the note actions menu"
+```
+
+## 9. Prefer `await expect(...).toBeVisible()` over arbitrary waits
+
+Playwright's auto-waiting is powerful. Never use `page.waitForTimeout()` — it's flaky and slow. Assert on the **expected end state** instead.
+
+```ts
+// Good: Waits intelligently for the element
+await expect(page.getByText('Note saved')).toBeVisible();
+
+// Bad: Arbitrary delay
+await page.waitForTimeout(2000);
+```
+
+The exception is `waitForLoadState('networkidle')` after authentication redirects, where the full page reload makes auto-waiting insufficient.
+
+## 10. Structure tests in the Given/When/Then rhythm
+
+Use comments to maintain the three-act structure. This makes tests scannable and self-documenting.
+
+```ts
+test('Pinned note appears at the top of the list', async ({ authenticatedPage: page }) => {
+  // Given a note titled "Important" exists
+  await createNote(page, 'Important');
+
+  // When the user pins the note
+  await pinNote(page, 'Important');
+
+  // Then it appears before unpinned notes
+  const firstCard = page.locator('[data-testid="note-card"]').first();
+  await expect(firstCard).toContainText('Important');
+});
+```
+
+## Quick reference
+
+| Practice | Category | Goal |
+|----------|----------|------|
+| 1. Declarative scenarios | Language | Stable comments despite UI changes |
+| 2. Given = state | Language | Decouple setup from UI flow |
+| 3. One behavior per test | Structure | Focused, debuggable tests |
+| 4. Outcome-based names | Language | Test reports read as specs |
+| 5. Isolate state | Reliability | No cross-test pollution |
+| 6. Avoid serial | Reliability | Parallel-safe by default |
+| 7. Extract helpers | Structure | DRY, intent-level code |
+| 8. Resilience test | Language | UI-change-proof comments |
+| 9. Auto-wait assertions | Reliability | No flaky timeouts |
+| 10. Given/When/Then | Structure | Scannable three-act tests |

drizzle/0002_deep_black_widow.sql

@@ -0,0 +1,114 @@
+CREATE TABLE `api_keys` (
+	`id` text PRIMARY KEY NOT NULL,
+	`user_id` integer NOT NULL,
+	`name` text NOT NULL,
+	`key_hash` text NOT NULL,
+	`key_prefix` text NOT NULL,
+	`created_at` integer NOT NULL,
+	`last_used_at` integer,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+CREATE TABLE `note_collaborators` (
+	`note_id` text NOT NULL,
+	`user_id` integer NOT NULL,
+	`added_by` integer NOT NULL,
+	`added_at` integer NOT NULL,
+	FOREIGN KEY (`note_id`) REFERENCES `notes`(`id`) ON UPDATE no action ON DELETE cascade,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action,
+	FOREIGN KEY (`added_by`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `note_collaborators_unique` ON `note_collaborators` (`note_id`,`user_id`);--> statement-breakpoint
+CREATE INDEX `note_collaborators_user_id_idx` ON `note_collaborators` (`user_id`);--> statement-breakpoint
+CREATE TABLE `note_user_state` (
+	`note_id` text NOT NULL,
+	`user_id` integer NOT NULL,
+	`pinned` integer DEFAULT false NOT NULL,
+	`archived` integer DEFAULT false NOT NULL,
+	`sort_order` integer DEFAULT 0 NOT NULL,
+	FOREIGN KEY (`note_id`) REFERENCES `notes`(`id`) ON UPDATE no action ON DELETE cascade,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `note_user_state_unique` ON `note_user_state` (`note_id`,`user_id`);--> statement-breakpoint
+CREATE TABLE `user_preferences` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` integer NOT NULL,
+	`key` text NOT NULL,
+	`value` text NOT NULL,
+	`updated_at` integer NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `user_preferences_user_key_unique` ON `user_preferences` (`user_id`,`key`);--> statement-breakpoint
+PRAGMA foreign_keys=OFF;--> statement-breakpoint
+CREATE TABLE `__new_attachments` (
+	`id` text PRIMARY KEY NOT NULL,
+	`user_id` integer DEFAULT 0 NOT NULL,
+	`note_id` text NOT NULL,
+	`filename` text NOT NULL,
+	`mime_type` text NOT NULL,
+	`size` integer NOT NULL,
+	`path` text NOT NULL,
+	`thumbnail_path` text,
+	`featured` integer DEFAULT false NOT NULL,
+	`created_at` integer NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action,
+	FOREIGN KEY (`note_id`) REFERENCES `notes`(`id`) ON UPDATE no action ON DELETE cascade
+);
+--> statement-breakpoint
+INSERT INTO `__new_attachments`("id", "user_id", "note_id", "filename", "mime_type", "size", "path", "thumbnail_path", "featured", "created_at") SELECT "id", "user_id", "note_id", "filename", "mime_type", "size", "path", "thumbnail_path", "featured", "created_at" FROM `attachments`;--> statement-breakpoint
+DROP TABLE `attachments`;--> statement-breakpoint
+ALTER TABLE `__new_attachments` RENAME TO `attachments`;--> statement-breakpoint
+PRAGMA foreign_keys=ON;--> statement-breakpoint
+CREATE TABLE `__new_notes` (
+	`id` text PRIMARY KEY NOT NULL,
+	`user_id` integer DEFAULT 0 NOT NULL,
+	`title` text DEFAULT '' NOT NULL,
+	`content` text DEFAULT '' NOT NULL,
+	`color` text DEFAULT 'default' NOT NULL,
+	`pinned` integer DEFAULT false NOT NULL,
+	`archived` integer DEFAULT false NOT NULL,
+	`trashed` integer DEFAULT false NOT NULL,
+	`trashed_at` integer,
+	`checklist_mode` integer DEFAULT false NOT NULL,
+	`sort_order` integer DEFAULT 0 NOT NULL,
+	`created_at` integer NOT NULL,
+	`updated_at` integer NOT NULL,
+	`version` integer DEFAULT 1 NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+INSERT INTO `__new_notes`("id", "user_id", "title", "content", "color", "pinned", "archived", "trashed", "trashed_at", "checklist_mode", "sort_order", "created_at", "updated_at", "version") SELECT "id", "user_id", "title", "content", "color", "pinned", "archived", "trashed", "trashed_at", "checklist_mode", "sort_order", "created_at", "updated_at", "version" FROM `notes`;--> statement-breakpoint
+DROP TABLE `notes`;--> statement-breakpoint
+ALTER TABLE `__new_notes` RENAME TO `notes`;--> statement-breakpoint
+CREATE INDEX `notes_user_id_idx` ON `notes` (`user_id`);--> statement-breakpoint
+CREATE INDEX `notes_trashed_archived_idx` ON `notes` (`trashed`,`archived`);--> statement-breakpoint
+CREATE INDEX `notes_updated_at_idx` ON `notes` (`updated_at`);--> statement-breakpoint
+CREATE TABLE `__new_sync_log` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` integer DEFAULT 0 NOT NULL,
+	`note_id` text NOT NULL,
+	`operation` text NOT NULL,
+	`timestamp` integer NOT NULL,
+	`client_id` text NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action,
+	FOREIGN KEY (`note_id`) REFERENCES `notes`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+INSERT INTO `__new_sync_log`("id", "user_id", "note_id", "operation", "timestamp", "client_id") SELECT "id", "user_id", "note_id", "operation", "timestamp", "client_id" FROM `sync_log`;--> statement-breakpoint
+DROP TABLE `sync_log`;--> statement-breakpoint
+ALTER TABLE `__new_sync_log` RENAME TO `sync_log`;--> statement-breakpoint
+CREATE INDEX `sync_log_timestamp_idx` ON `sync_log` (`timestamp`);--> statement-breakpoint
+CREATE TABLE `__new_tags` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`user_id` integer DEFAULT 0 NOT NULL,
+	`name` text NOT NULL,
+	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+INSERT INTO `__new_tags`("id", "user_id", "name") SELECT "id", "user_id", "name" FROM `tags`;--> statement-breakpoint
+DROP TABLE `tags`;--> statement-breakpoint
+ALTER TABLE `__new_tags` RENAME TO `tags`;--> statement-breakpoint
+CREATE UNIQUE INDEX `tags_name_user_unique` ON `tags` (`name`,`user_id`);

drizzle/meta/_journal.json

@@ -15,6 +15,13 @@
       "when": 1773016788899,
       "tag": "0001_strange_lord_hawal",
       "breakpoints": true
+    },
+    {
+      "idx": 2,
+      "version": "6",
+      "when": 1773150888301,
+      "tag": "0002_deep_black_widow",
+      "breakpoints": true
     }
   ]
 }

package.json

@@ -1,7 +1,7 @@
 {
   "name": "crumbs",
   "private": true,
-  "version": "0.15.0",
+  "version": "0.22.2",
   "type": "module",
   "license": "MIT",
   "author": "Bretzel (https://bretzel.app)",
@@ -12,14 +12,18 @@
   },
   "scripts": {
     "dev": "vite dev",
-    "build": "vite build",
+    "build": "npx tsx scripts/generate-openapi.ts && vite build",
+    "openapi": "npx tsx scripts/generate-openapi.ts",
     "preview": "vite preview",
     "prepare": "svelte-kit sync || echo ''",
     "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
     "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
     "test:unit": "vitest run",
     "test:unit:watch": "vitest",
+    "test:unit:coverage": "vitest run --coverage",
     "test:e2e": "playwright test",
+    "test:e2e:coverage": "VITE_COVERAGE=true pnpm build && pnpm test:e2e && nyc report",
+    "coverage:merge-e2e": "nyc merge coverage/e2e/raw coverage/e2e/merged.json && nyc report",
     "test": "pnpm test:unit && pnpm test:e2e",
     "db:push": "drizzle-kit push",
     "db:generate": "drizzle-kit generate",
@@ -51,6 +55,8 @@
     "idb": "^8.0.3",
     "lucide-svelte": "^0.577.0",
     "markdown-it": "^14.1.1",
+    "node-diff3": "^3.2.0",
+    "nodemailer": "^8.0.2",
     "svelte-dnd-action": "^0.9.69",
     "tiptap-markdown": "^0.9.0",
     "uuid": "^11.1.0",
@@ -65,17 +71,23 @@
     "@tailwindcss/vite": "^4.2.1",
     "@types/better-sqlite3": "^7.6.13",
     "@types/markdown-it": "^14.1.2",
+    "@types/nodemailer": "^7.0.11",
     "@types/uuid": "^10.0.0",
     "@types/zxcvbn": "^4.4.5",
     "@vite-pwa/sveltekit": "^1.1.0",
+    "@vitest/coverage-v8": "^3.2.4",
     "drizzle-kit": "^0.31.9",
+    "nyc": "^18.0.0",
     "svelte": "^5.53.7",
     "svelte-check": "^4.4.4",
     "tailwindcss": "^4.2.1",
     "tsx": "^4.21.0",
     "typescript": "^5.9.3",
     "vite": "^7.3.1",
+    "vite-plugin-istanbul": "^7.2.1",
+    "vite-plugin-pwa": "^1.2.0",
     "vitest": "^3.2.4",
+    "workbox-window": "^7.4.0",
     "yaml": "^2.8.2"
   },
   "pnpm": {
@@ -87,7 +99,8 @@
     "overrides": {
       "serialize-javascript": ">=7.0.3",
       "esbuild@<0.25.0": "0.25.12",
-      "cookie": ">=0.7.0"
+      "cookie": ">=0.7.0",
+      "hono": ">=4.12.7"
     }
   }
 }

playwright.config.ts

@@ -4,13 +4,15 @@ export default defineConfig({
 	testDir: './tests/e2e',
 	fullyParallel: true,
 	forbidOnly: !!process.env.CI,
-	retries: process.env.CI ? 2 : 0,
+	retries: 0,
+	workers: process.env.CI ? 4 : undefined,
 	reporter: 'html',
 	globalSetup: './tests/e2e/global-setup.ts',
 	use: {
 		baseURL: 'http://localhost:4173',
 		trace: 'on-first-retry',
-		screenshot: 'only-on-failure'
+		screenshot: 'only-on-failure',
+		serviceWorkers: 'block'
 	},
 	projects: [
 		{
@@ -27,7 +29,7 @@ export default defineConfig({
 		}
 	],
 	webServer: {
-		command: 'pnpm build && pnpm preview --port 4173',
+		command: 'pnpm preview --port 4173',
 		port: 4173,
 		reuseExistingServer: !process.env.CI,
 		timeout: 120_000,

scripts/coverage-summary.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Writes a coverage summary table to $GITHUB_STEP_SUMMARY (or stdout if not in CI).
+# Usage: scripts/coverage-summary.sh <title> <json-summary-path>
+set -euo pipefail
+
+TITLE="${1:?Usage: coverage-summary.sh <title> <json-summary-path>}"
+JSON="${2:?Usage: coverage-summary.sh <title> <json-summary-path>}"
+
+if [ ! -f "$JSON" ]; then
+  echo "Coverage summary not found: $JSON" >&2
+  exit 0
+fi
+
+# Resolve to absolute path for require()
+ABS_JSON="$(cd "$(dirname "$JSON")" && pwd)/$(basename "$JSON")"
+
+# Extract totals with node (available in CI, no jq dependency)
+read -r stmts branches funcs lines < <(node -e "
+  const s = require('$ABS_JSON').total;
+  console.log(s.statements.pct, s.branches.pct, s.functions.pct, s.lines.pct);
+")
+
+TABLE="## $TITLE
+
+| Metric | Coverage |
+|--------|----------|
+| Statements | ${stmts}% |
+| Branches | ${branches}% |
+| Functions | ${funcs}% |
+| Lines | ${lines}% |
+"
+
+if [ -n "${GITHUB_STEP_SUMMARY:-}" ]; then
+  echo "$TABLE" >> "$GITHUB_STEP_SUMMARY"
+else
+  echo "$TABLE"
+fi

scripts/generate-openapi.ts

@@ -0,0 +1,147 @@
+/**
+ * Auto-generates an OpenAPI spec from the SvelteKit route tree.
+ *
+ * Scans all +server.ts files under src/routes/api/ for exported HTTP methods and
+ * builds a minimal OpenAPI 3.1 spec at static/.well-known/openapi.json.
+ *
+ * Usage: npx tsx scripts/generate-openapi.ts
+ */
+
+import { readFileSync, writeFileSync, mkdirSync, readdirSync, statSync } from 'fs';
+import { resolve, relative, dirname, join } from 'path';
+
+const ROOT = process.cwd();
+const ROUTES_DIR = resolve(ROOT, 'src/routes/api');
+const OUTPUT = resolve(ROOT, 'static/api/openapi.json');
+
+const pkg = JSON.parse(readFileSync(resolve(ROOT, 'package.json'), 'utf-8'));
+
+function walkDir(dir: string): string[] {
+	const results: string[] = [];
+	for (const entry of readdirSync(dir)) {
+		const full = join(dir, entry);
+		if (statSync(full).isDirectory()) {
+			results.push(...walkDir(full));
+		} else if (entry === '+server.ts') {
+			results.push(full);
+		}
+	}
+	return results;
+}
+
+const HTTP_METHODS = ['GET', 'POST', 'PUT', 'PATCH', 'DELETE'] as const;
+const METHOD_RE = new RegExp(`export\\s+const\\s+(${HTTP_METHODS.join('|')})`, 'g');
+
+function svelteKitPathToOpenAPI(filePath: string): string {
+	const rel = relative(ROUTES_DIR, dirname(filePath));
+	const segments = rel === '' ? [] : rel.split('/');
+	const apiPath =
+		'/api/' +
+		segments
+			.map((s) => {
+				const match = s.match(/^\[(.+)\]$/);
+				return match ? `{${match[1]}}` : s;
+			})
+			.join('/');
+	return apiPath;
+}
+
+function extractMethods(filePath: string): string[] {
+	const content = readFileSync(filePath, 'utf-8');
+	const methods: string[] = [];
+	let match;
+	while ((match = METHOD_RE.exec(content)) !== null) {
+		methods.push(match[1].toLowerCase());
+	}
+	METHOD_RE.lastIndex = 0;
+	return methods;
+}
+
+function inferTag(path: string): string {
+	const first = path.replace('/api/', '').split('/')[0];
+	return first.charAt(0).toUpperCase() + first.slice(1);
+}
+
+function extractPathParams(path: string) {
+	const params: { name: string; in: string; required: boolean; schema: { type: string } }[] = [];
+	const re = /\{(\w+)\}/g;
+	let match;
+	while ((match = re.exec(path)) !== null) {
+		params.push({ name: match[1], in: 'path', required: true, schema: { type: 'string' } });
+	}
+	return params;
+}
+
+const files = walkDir(ROUTES_DIR);
+const paths: Record<string, Record<string, unknown>> = {};
+
+for (const fullPath of files) {
+	const apiPath = svelteKitPathToOpenAPI(fullPath);
+	const methods = extractMethods(fullPath);
+
+	if (methods.length === 0) continue;
+
+	const pathParams = extractPathParams(apiPath);
+	const pathEntry: Record<string, unknown> = {};
+
+	if (pathParams.length > 0) {
+		pathEntry.parameters = pathParams;
+	}
+
+	for (const method of methods) {
+		const operation: Record<string, unknown> = {
+			tags: [inferTag(apiPath)],
+			responses: {
+				'200': { description: 'Success' }
+			}
+		};
+
+		if (['post', 'put', 'patch'].includes(method)) {
+			operation.requestBody = {
+				content: {
+					'application/json': {
+						schema: { type: 'object' }
+					}
+				}
+			};
+		}
+
+		pathEntry[method] = operation;
+	}
+
+	paths[apiPath] = pathEntry;
+}
+
+const sortedPaths: Record<string, Record<string, unknown>> = {};
+for (const key of Object.keys(paths).sort()) {
+	sortedPaths[key] = paths[key];
+}
+
+const spec = {
+	openapi: '3.1.0',
+	info: {
+		title: `${pkg.name.charAt(0).toUpperCase() + pkg.name.slice(1)} API`,
+		description: `Auto-generated API spec for ${pkg.name}`,
+		version: pkg.version,
+		contact: {
+			name: 'Bretzel',
+			url: 'https://bretzel.app'
+		}
+	},
+	servers: [{ url: '/', description: 'Current instance' }],
+	security: [{ sessionCookie: [] }],
+	paths: sortedPaths,
+	components: {
+		securitySchemes: {
+			sessionCookie: {
+				type: 'apiKey',
+				in: 'cookie',
+				name: 'session'
+			}
+		}
+	}
+};
+
+mkdirSync(dirname(OUTPUT), { recursive: true });
+writeFileSync(OUTPUT, JSON.stringify(spec, null, 2) + '\n');
+console.log(`Generated ${relative(ROOT, OUTPUT)} with ${Object.keys(paths).length} paths`);

src/app.d.ts

@@ -1,3 +1,6 @@
+/// <reference types="vite-plugin-pwa/info" />
+/// <reference types="vite-plugin-pwa/vanillajs" />
+
 // See https://svelte.dev/docs/kit/types#app.d.ts
 // for information about these interfaces
 declare global {

src/app.html

@@ -11,7 +11,6 @@
     <link rel="shortcut icon" href="/favicon.ico" />
     <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
     <meta name="apple-mobile-web-app-title" content="Crumbs" />
-    <link rel="manifest" href="/site.webmanifest" />
     <title>Crumbs</title>
     %sveltekit.head%
   </head>

src/hooks.server.ts

@@ -22,36 +22,31 @@ export const handle: Handle = async ({ event, resolve }) => {
 		return resolve(event);
 	}
 
-	// MCP endpoint: authenticate via Bearer token (API key)
-	if (pathname.startsWith('/api/mcp')) {
+	// API routes: authenticate via Bearer token if present
+	if (pathname.startsWith('/api/')) {
 		const authHeader = event.request.headers.get('authorization');
 		const token = authHeader?.startsWith('Bearer ') ? authHeader.slice(7) : null;
 
-		if (!token) {
-			return new Response(JSON.stringify({ error: 'Unauthorized' }), {
-				status: 401,
-				headers: { 'Content-Type': 'application/json' }
-			});
-		}
+		if (token) {
+			const { valid, userId } = validateApiKey(token);
+			if (!valid || !userId) {
+				return new Response(JSON.stringify({ error: 'Unauthorized' }), {
+					status: 401,
+					headers: { 'Content-Type': 'application/json' }
+				});
+			}
 
-		const { valid, userId } = validateApiKey(token);
-		if (!valid || !userId) {
-			return new Response(JSON.stringify({ error: 'Unauthorized' }), {
-				status: 401,
-				headers: { 'Content-Type': 'application/json' }
-			});
-		}
+			const user = getUserForApiKey(userId);
+			if (!user) {
+				return new Response(JSON.stringify({ error: 'Unauthorized' }), {
+					status: 401,
+					headers: { 'Content-Type': 'application/json' }
+				});
+			}
 
-		const user = getUserForApiKey(userId);
-		if (!user) {
-			return new Response(JSON.stringify({ error: 'Unauthorized' }), {
-				status: 401,
-				headers: { 'Content-Type': 'application/json' }
-			});
+			event.locals.user = user;
+			return resolve(event);
 		}
-
-		event.locals.user = user;
-		return resolve(event);
 	}
 
 	// Check if setup is complete

src/lib/components/Checklist.svelte

@@ -121,7 +121,7 @@
 		class="space-y-0.5"
 	>
 		{#each activeItems as item (item.id)}
-			<div class="group flex items-center gap-2 py-1" animate:flip={{ duration: flipDurationMs }}>
+			<div class="group flex items-center gap-2 py-1.5" animate:flip={{ duration: flipDurationMs }}>
 				<div use:dragHandle aria-label="drag handle" class="drag-handle cursor-grab max-md:opacity-100 md:opacity-0 md:group-hover:opacity-100 focus:opacity-100 transition-opacity duration-150" data-testid="checklist-drag-handle">
 					<GripVertical class="h-4 w-4 text-[var(--text-muted)]" />
 				</div>
@@ -137,7 +137,7 @@
 					value={item.text}
 					oninput={(e) => updateText(item.id, (e.target as HTMLInputElement).value)}
 					onkeydown={(e) => handleKeydown(e, item.id)}
-					class="flex-1 bg-transparent text-sm outline-none {item.checked ? 'text-[var(--text-muted)] line-through' : 'text-[var(--text)]'}"
+					class="flex-1 min-w-0 bg-transparent text-sm outline-none {item.checked ? 'text-[var(--text-muted)] line-through' : 'text-[var(--text)]'}"
 					placeholder="List item"
 					data-testid="checklist-input"
 				/>
@@ -155,7 +155,7 @@
 
 	<button
 		onclick={() => addItem(items.length - 1)}
-		class="flex items-center gap-2 text-sm text-[var(--text-muted)] hover:text-[var(--text)]"
+		class="flex items-center gap-2 py-1.5 text-sm text-[var(--text-muted)] hover:text-[var(--text)]"
 		data-testid="checklist-add"
 	>
 		<Plus class="h-4 w-4" />
@@ -176,7 +176,7 @@
 			{#if doneExpanded}
 				<div class="mt-1 space-y-0.5 pl-5" data-testid="checklist-done-section">
 					{#each doneItems as item (item.id)}
-						<div class="group flex items-center gap-2 py-1">
+						<div class="group flex items-center gap-2 py-1.5">
 							<input
 								type="checkbox"
 								checked={item.checked}

src/lib/components/Layout/Sidebar.svelte

@@ -6,10 +6,9 @@
 	interface Props {
 		open: boolean;
 		onClose?: () => void;
-		appVersion?: string;
 	}
 
-	let { open, onClose, appVersion }: Props = $props();
+	let { open, onClose }: Props = $props();
 
 	function closeMobile() {
 		if (window.matchMedia('(max-width: 1023px)').matches) {
@@ -75,17 +74,12 @@
 	<div class="absolute bottom-0 left-0 w-full border-t border-[var(--border-subtle)]">
 		<a
 			href="/settings"
-			class="flex w-full items-center gap-3 px-6 py-3 text-sm text-[var(--text-muted)] transition-colors hover:text-[var(--primary)]"
+			class="flex w-full items-center gap-3 rounded-sm px-6 py-3 text-left text-sm transition-colors {$page.url.pathname.startsWith('/settings') ? 'bg-[var(--primary)]/15 text-[var(--primary)]' : 'text-[var(--text)] hover:bg-[var(--bg-base)]'}"
 			onclick={closeMobile}
 			data-testid="settings-link"
 		>
-			<Settings size={16} />
+			<Settings size={20} />
 			Settings
 		</a>
-		{#if appVersion}
-			<div class="border-t border-[var(--border-subtle)] px-6 py-2 text-right text-xs text-[var(--text-muted)]">
-				v{appVersion}
-			</div>
-		{/if}
 	</div>
 </aside>

src/lib/components/NoteCard.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
 	import { NOTE_COLORS } from '$lib/utils/colors.js';
 	import { renderMarkdown } from '$lib/utils/markdown.js';
-	import { togglePin, trashNote, archiveNote, unarchiveNote, restoreNote, deleteNote, updateNote, leaveNote, currentFilter } from '$lib/stores/notes.js';
+	import { togglePin, trashNote, archiveNote, unarchiveNote, restoreNote, deleteNote, leaveNote, currentFilter } from '$lib/stores/notes.js';
 	import ImageLightbox from './ImageLightbox.svelte';
 	import CollaboratorPopover from './CollaboratorPopover.svelte';
 	import type { Note } from '$lib/types/index.js';
@@ -58,20 +58,6 @@
 		};
 	}
 
-	function toggleChecklistItem(item: ChecklistItem) {
-		const lines = note.content.split('\n');
-		for (let i = 0; i < lines.length; i++) {
-			const line = lines[i];
-			const text = line.replace(/^- \[[ x]\] /, '');
-			if (text === item.text && line.startsWith(item.checked ? '- [x] ' : '- [ ] ')) {
-				lines[i] = item.checked
-					? `- [ ] ${text}`
-					: `- [x] ${text}`;
-				break;
-			}
-		}
-		updateNote(note.id, { content: lines.join('\n') });
-	}
 </script>
 
 <!-- svelte-ignore a11y_no_noninteractive_element_to_interactive_role -->
@@ -138,17 +124,17 @@
 	{/if}
 
 	{#if note.checklistMode && checklistItems.length > 0}
-		<ul class="space-y-1" data-testid="note-checklist-preview">
+		<ul class="space-y-2 mb-6" data-testid="note-checklist-preview">
 			{#each sortedChecklistItems.slice(0, 8) as item}
-				<li class="flex items-center gap-2 text-sm {item.checked ? 'text-[var(--text-muted)] line-through' : 'text-[var(--text)]'}">
+				<li class="flex items-start gap-2 text-sm {item.checked ? 'text-[var(--text-muted)] line-through' : 'text-[var(--text)]'}">
 					<input
 						type="checkbox"
 						checked={item.checked}
-						onclick={(e) => { e.stopPropagation(); toggleChecklistItem(item); }}
-						class="h-3.5 w-3.5 rounded border-[var(--border-subtle)] text-[var(--primary)] cursor-pointer"
+						disabled
+						class="mt-0.5 h-3.5 w-3.5 shrink-0 rounded border-[var(--border-subtle)] text-[var(--primary)]"
 						data-testid="card-checklist-checkbox"
 					/>
-					<span class="truncate">{item.text}</span>
+					<span class="break-words min-w-0">{item.text}</span>
 				</li>
 			{/each}
 			{#if checklistItems.length > 8}

src/lib/components/NoteEditor.svelte

@@ -1,13 +1,16 @@
 <script lang="ts">
+	import { onMount } from 'svelte';
 	import ColorPicker from './ColorPicker.svelte';
 	import Checklist from './Checklist.svelte';
 	import FormattingToolbar from './FormattingToolbar.svelte';
 	import TiptapEditor from './TiptapEditor.svelte';
 	import ImageUpload from './ImageUpload.svelte';
 	import ShareDialog from './ShareDialog.svelte';
+	import NoteHistory from './NoteHistory.svelte';
 	import { updateNote, createNote } from '$lib/stores/notes.js';
 	import { notes } from '$lib/stores/notes.js';
 	import { NOTE_COLORS } from '$lib/utils/colors.js';
+	import { getPreferences } from '$lib/stores/preferences.svelte.js';
 	import type { Editor } from '@tiptap/core';
 	import type { Note, NoteColor, Attachment, Collaborator } from '$lib/types/index.js';
 	import Palette from 'lucide-svelte/icons/palette';
@@ -18,6 +21,7 @@
 	import FileText from 'lucide-svelte/icons/file-text';
 	import UserPlus from 'lucide-svelte/icons/user-plus';
 	import Users from 'lucide-svelte/icons/users';
+	import History from 'lucide-svelte/icons/history';
 
 	interface Props {
 		note: Note | null;
@@ -26,19 +30,20 @@
 	}
 
 	const { note, isNew = false, onClose }: Props = $props();
+	const prefs = getPreferences();
 
 	// svelte-ignore state_referenced_locally
 	let title = $state(note?.title ?? '');
 	// svelte-ignore state_referenced_locally
 	let content = $state(note?.content ?? '');
 	// svelte-ignore state_referenced_locally
-	let color = $state<NoteColor>(note?.color ?? 'default');
+	let color = $state<NoteColor>(note?.color ?? prefs.defaultNoteColor);
 	// svelte-ignore state_referenced_locally
 	let checklistMode = $state(note?.checklistMode ?? false);
 	let showColorPicker = $state(false);
 	let showImageUpload = $state(false);
 	// svelte-ignore state_referenced_locally
-	let rawMarkdownMode = $state(note?.checklistMode ?? false);
+	let rawMarkdownMode = $state(note ? (note.checklistMode ?? false) : prefs.defaultNoteMode === 'markdown');
 	let textareaEl: HTMLTextAreaElement | undefined = $state();
 	let tiptapEditor: Editor | undefined = $state();
 	let editorTick = $state(0);
@@ -52,7 +57,17 @@
 	// svelte-ignore state_referenced_locally
 	let attachmentsList = $state<Attachment[]>(note?.attachments ?? []);
 
+	// Guard against mobile ghost clicks: on touch devices, a tap on the note card
+	// can produce a synthetic click that lands on editor buttons rendered at the same
+	// coordinates. Suppress pointer events on toolbar controls until mount completes.
+	let toolbarInteractive = $state(false);
+	onMount(() => {
+		const timer = setTimeout(() => { toolbarInteractive = true; }, 150);
+		return () => clearTimeout(timer);
+	});
+
 	let showShareDialog = $state(false);
+	let showHistory = $state(false);
 	// svelte-ignore state_referenced_locally
 	let collaboratorsList = $state<Collaborator[]>(note?.collaborators ?? []);
 	const isOwner = $derived(note?.isOwner !== false);
@@ -82,6 +97,37 @@
 		showShareDialog = !showShareDialog;
 	}
 
+	async function toggleHistory() {
+		if (currentlyNew) {
+			const id = await autoSave();
+			if (!id) return;
+		}
+		showHistory = !showHistory;
+	}
+
+	async function handleHistoryRestored() {
+		if (!noteId) return;
+		// Reload the note content from the server after a restore
+		try {
+			const res = await fetch(`/api/notes/${noteId}`);
+			if (res.ok) {
+				const updated = await res.json();
+				title = updated.title ?? '';
+				content = updated.content ?? '';
+				color = updated.color ?? 'default';
+				checklistMode = updated.checklistMode ?? false;
+				// Bump editor tick to force TiptapEditor to re-render
+				editorTick++;
+				// Update the store too
+				notes.update((list) =>
+					list.map((n) => (n.id === noteId ? { ...n, ...updated } : n))
+				);
+			}
+		} catch {
+			// failed silently
+		}
+	}
+
 	// Fetch attachments for existing notes if not pre-populated (e.g. loaded from IDB)
 	$effect(() => {
 		if (noteId && !currentlyNew && (!note?.attachments || note.attachments.length === 0)) {
@@ -134,6 +180,21 @@
 		bgStyle = `background-color: ${colors.bg}`;
 	});
 
+	// Use pointer events to detect backdrop clicks. Unlike mouse events,
+	// pointer events are never synthetically re-dispatched from touch, so
+	// the tap that opened the editor on mobile cannot ghost-click the overlay.
+	// Both pointerdown and pointerup must target the overlay itself to close.
+	let pointerdownOnOverlay = false;
+
+	function handleOverlayPointerdown(e: PointerEvent) {
+		pointerdownOnOverlay = e.target === e.currentTarget;
+	}
+
+	function handleOverlayPointerup(e: PointerEvent) {
+		if (pointerdownOnOverlay && e.target === e.currentTarget) saveAndClose();
+		pointerdownOnOverlay = false;
+	}
+
 	async function saveAndClose() {
 		if (!title.trim() && !content.trim()) {
 			onClose();
@@ -195,7 +256,8 @@
 <!-- svelte-ignore a11y_no_static_element_interactions -->
 <div
 	class="fixed inset-0 z-40 flex items-start justify-center overflow-y-auto bg-black/50 pt-20 pb-10 animate-[fade-in_150ms_ease-out]"
-	onclick={saveAndClose}
+	onpointerdown={handleOverlayPointerdown}
+	onpointerup={handleOverlayPointerup}
 	onkeydown={handleKeydown}
 	data-testid="note-editor-overlay"
 >
@@ -203,7 +265,6 @@
 	<div
 		class="mx-4 flex w-full max-w-xl md:max-w-2xl flex-col overflow-hidden rounded-sm border border-[var(--border)] shadow-[var(--card-shadow)] animate-[pop-in_150ms_ease-out]"
 		style={bgStyle}
-		onclick={(e) => e.stopPropagation()}
 		onkeydown={(e) => { e.stopPropagation(); handleKeydown(e); }}
 		data-testid="note-editor"
 	>
@@ -265,11 +326,16 @@
 
 		<!-- Formatting toolbar -->
 		{#if !rawMarkdownMode && !checklistMode}
-			<FormattingToolbar editor={tiptapEditor} tick={editorTick} />
+			<div style={toolbarInteractive ? '' : 'pointer-events: none'}>
+				<FormattingToolbar editor={tiptapEditor} tick={editorTick} />
+			</div>
 		{/if}
 
 		<!-- Toolbar -->
-		<div class="flex items-center justify-between border-t border-[var(--border-subtle)] px-2 py-2">
+		<div
+			class="flex items-center justify-between border-t border-[var(--border-subtle)] px-2 py-2"
+			style={toolbarInteractive ? '' : 'pointer-events: none'}
+		>
 			<div class="flex items-center gap-1">
 				<!-- Color picker toggle -->
 				<div class="relative">
@@ -346,6 +412,18 @@
 						<Users class="h-5 w-5" />
 					</span>
 				{/if}
+
+				<!-- History button (only for saved notes) -->
+				{#if !currentlyNew}
+					<button
+						onclick={toggleHistory}
+						class="rounded-sm p-2 hover:bg-[var(--border)]/10"
+						title="Version history"
+						data-testid="history-toggle"
+					>
+						<History class="h-5 w-5 {showHistory ? 'text-[var(--primary)]' : ''}" />
+					</button>
+				{/if}
 			</div>
 
 			<button
@@ -368,3 +446,11 @@
 		onUpdate={handleCollaboratorsUpdate}
 	/>
 {/if}
+
+{#if showHistory && noteId}
+	<NoteHistory
+		noteId={noteId}
+		onClose={() => (showHistory = false)}
+		onRestored={handleHistoryRestored}
+	/>
+{/if}

src/lib/components/NoteHistory.svelte

@@ -0,0 +1,224 @@
+<script lang="ts">
+	import type { NoteVersionSummary, NoteVersion } from '$lib/types/index.js';
+	import X from 'lucide-svelte/icons/x';
+	import RotateCcw from 'lucide-svelte/icons/rotate-ccw';
+	import Clock from 'lucide-svelte/icons/clock';
+	import { showToast } from '$lib/stores/toast.js';
+
+	interface Props {
+		noteId: string;
+		onClose: () => void;
+		onRestored: () => void;
+	}
+
+	const { noteId, onClose, onRestored }: Props = $props();
+
+	let versions = $state<NoteVersionSummary[]>([]);
+	let selectedVersion = $state<NoteVersion | null>(null);
+	let isLoading = $state(true);
+	let isLoadingVersion = $state(false);
+	let isRestoring = $state(false);
+	let showConfirm = $state(false);
+
+	$effect(() => {
+		// Track noteId explicitly so this only re-runs when the note changes
+		noteId;
+		void loadVersions();
+	});
+
+	async function loadVersions() {
+		isLoading = true;
+		try {
+			const res = await fetch(`/api/notes/${noteId}/versions`);
+			if (res.ok) {
+				versions = await res.json();
+			}
+		} catch {
+			// failed silently
+		} finally {
+			isLoading = false;
+		}
+	}
+
+	async function selectVersion(versionId: string) {
+		isLoadingVersion = true;
+		selectedVersion = null;
+		try {
+			const res = await fetch(`/api/notes/${noteId}/versions/${versionId}`);
+			if (res.ok) {
+				selectedVersion = await res.json();
+			}
+		} catch {
+			// failed silently
+		} finally {
+			isLoadingVersion = false;
+		}
+	}
+
+	async function restoreVersion() {
+		if (!selectedVersion) return;
+		isRestoring = true;
+		try {
+			const res = await fetch(
+				`/api/notes/${noteId}/versions/${selectedVersion.id}/restore`,
+				{ method: 'POST' }
+			);
+			if (res.ok) {
+				showToast('Version restored successfully', 'success');
+				onRestored();
+				onClose();
+			} else {
+				showToast('Failed to restore version', 'error');
+			}
+		} catch {
+			showToast('Failed to restore version', 'error');
+		} finally {
+			isRestoring = false;
+			showConfirm = false;
+		}
+	}
+
+	function formatDate(date: Date | string): string {
+		const d = new Date(date);
+		const now = new Date();
+		const diffMs = now.getTime() - d.getTime();
+		const diffMins = Math.floor(diffMs / 60000);
+		const diffHours = Math.floor(diffMins / 60);
+		const diffDays = Math.floor(diffHours / 24);
+
+		if (diffMins < 1) return 'Just now';
+		if (diffMins < 60) return `${diffMins} minute${diffMins === 1 ? '' : 's'} ago`;
+		if (diffHours < 24) return `${diffHours} hour${diffHours === 1 ? '' : 's'} ago`;
+		if (diffDays < 7) return `${diffDays} day${diffDays === 1 ? '' : 's'} ago`;
+		return d.toLocaleDateString('en-US', { month: 'short', day: 'numeric', year: 'numeric' });
+	}
+</script>
+
+<!-- svelte-ignore a11y_no_static_element_interactions -->
+<div
+	class="fixed inset-0 z-50 flex items-start justify-center overflow-y-auto bg-black/50 pt-20 pb-10"
+	onkeydown={(e) => { if (e.key === 'Escape') onClose(); }}
+	onclick={(e) => { if (e.target === e.currentTarget) onClose(); }}
+	data-testid="history-overlay"
+>
+	<!-- svelte-ignore a11y_no_static_element_interactions -->
+	<div
+		class="mx-4 flex w-full max-w-2xl flex-col overflow-hidden rounded-sm border border-[var(--border)] bg-[var(--bg-surface)] shadow-[var(--card-shadow)]"
+		onclick={(e) => e.stopPropagation()}
+		onkeydown={(e) => e.stopPropagation()}
+		data-testid="history-panel"
+	>
+		<!-- Header -->
+		<div class="flex items-center justify-between border-b border-[var(--border-subtle)] px-4 py-3">
+			<div class="flex items-center gap-2">
+				<Clock class="h-4 w-4 text-[var(--text-muted)]" />
+				<h2 class="text-sm font-semibold text-[var(--text)]">Version History</h2>
+			</div>
+			<button
+				onclick={onClose}
+				class="rounded-sm p-1 hover:bg-[var(--border)]/10"
+				title="Close history"
+				data-testid="close-history-btn"
+			>
+				<X class="h-4 w-4 text-[var(--text-muted)]" />
+			</button>
+		</div>
+
+		<div class="flex min-h-0 max-h-[60vh] flex-1">
+			<!-- Version list -->
+			<div class="w-56 flex-none border-r border-[var(--border-subtle)] overflow-y-auto">
+				{#if isLoading}
+					<div class="flex items-center justify-center py-8 text-sm text-[var(--text-muted)]">
+						Loading…
+					</div>
+				{:else if versions.length === 0}
+					<div class="flex items-center justify-center py-8 text-sm text-[var(--text-muted)]">
+						No history yet
+					</div>
+				{:else}
+					<ul class="divide-y divide-[var(--border-subtle)]">
+						{#each versions as v (v.id)}
+							<li>
+								<button
+									class="w-full px-3 py-3 text-left hover:bg-[var(--border)]/10 transition-colors {selectedVersion?.id === v.id ? 'bg-[var(--primary)]/10 border-l-2 border-[var(--primary)]' : ''}"
+									onclick={() => selectVersion(v.id)}
+									data-testid="version-item"
+								>
+									<div class="flex items-center justify-between gap-1">
+										<span class="text-xs font-semibold text-[var(--primary)]">v{v.version}</span>
+									</div>
+									<div class="mt-0.5 text-xs text-[var(--text-muted)]">{formatDate(v.createdAt)}</div>
+									{#if v.title}
+										<div class="mt-1 truncate text-xs font-medium text-[var(--text)]">{v.title}</div>
+									{/if}
+									{#if v.contentPreview}
+										<div class="mt-0.5 line-clamp-2 text-xs text-[var(--text-muted)]">{v.contentPreview}</div>
+									{/if}
+								</button>
+							</li>
+						{/each}
+					</ul>
+				{/if}
+			</div>
+
+			<!-- Version preview -->
+			<div class="flex min-w-0 flex-1 flex-col">
+				{#if isLoadingVersion}
+					<div class="flex items-center justify-center py-8 text-sm text-[var(--text-muted)]">
+						Loading…
+					</div>
+				{:else if selectedVersion}
+					<div class="flex flex-1 flex-col overflow-y-auto">
+						<div class="flex-1 overflow-y-auto px-4 py-3">
+							{#if selectedVersion.title}
+								<h3 class="mb-2 text-base font-semibold text-[var(--text)]">{selectedVersion.title}</h3>
+							{/if}
+							<pre class="whitespace-pre-wrap text-sm text-[var(--text)] font-[inherit]">{selectedVersion.content || '(empty)'}</pre>
+						</div>
+
+						<!-- Restore footer -->
+						<div class="border-t border-[var(--border-subtle)] px-4 py-3">
+							{#if showConfirm}
+								<div class="flex flex-col gap-2">
+									<p class="text-xs text-[var(--text-muted)]">
+										This will replace the current note. The current version will be saved as a snapshot.
+									</p>
+									<div class="flex gap-2">
+										<button
+											onclick={restoreVersion}
+											disabled={isRestoring}
+											class="flex items-center gap-1.5 rounded-sm border border-[var(--destructive)] bg-[var(--destructive)] px-3 py-1.5 text-xs font-medium text-white hover:opacity-90 disabled:opacity-50"
+											data-testid="confirm-restore-btn"
+										>
+											<RotateCcw class="h-3.5 w-3.5" />
+											{isRestoring ? 'Restoring…' : 'Confirm Restore'}
+										</button>
+										<button
+											onclick={() => (showConfirm = false)}
+											class="rounded-sm border border-[var(--border-subtle)] px-3 py-1.5 text-xs font-medium text-[var(--text)] hover:bg-[var(--border)]/10"
+										>
+											Cancel
+										</button>
+									</div>
+								</div>
+							{:else}
+								<button
+									onclick={() => (showConfirm = true)}
+									class="flex items-center gap-1.5 rounded-sm border border-[var(--border-subtle)] px-3 py-1.5 text-xs font-medium text-[var(--text)] hover:border-[var(--primary)] hover:text-[var(--primary)] transition-colors"
+									data-testid="restore-btn"
+								>
+									<RotateCcw class="h-3.5 w-3.5" />
+									Restore this version
+								</button>
+							{/if}
+						</div>
+					</div>
+				{:else}
+					<div class="flex items-center justify-center py-8 text-sm text-[var(--text-muted)]">
+						Select a version to preview
+					</div>
+				{/if}
+			</div>
+		</div>
+	</div>
+</div>

src/lib/server/api-utils.test.ts

@@ -0,0 +1,100 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { createTestDb } from './db/test-helpers.js';
+import { notes, noteCollaborators, users } from './db/schema.js';
+import type { Db } from './db/index.js';
+import { canAccessNote, requireNoteAccess, requireNoteOwnership, getUserId } from './api-utils.js';
+
+let db: Db;
+const OWNER_ID = 1;
+const COLLAB_ID = 2;
+const STRANGER_ID = 3;
+
+function seedUsers() {
+	db.insert(users)
+		.values([
+			{ email: 'owner@test.com', displayName: 'Owner', role: 'admin', authProvider: 'password', createdAt: new Date() },
+			{ email: 'collab@test.com', displayName: 'Collab', role: 'user', authProvider: 'password', createdAt: new Date() },
+			{ email: 'stranger@test.com', displayName: 'Stranger', role: 'user', authProvider: 'password', createdAt: new Date() }
+		])
+		.run();
+}
+
+function seedNote(id: string) {
+	db.insert(notes)
+		.values({ id, userId: OWNER_ID, title: 'Test', content: '', createdAt: new Date(), updatedAt: new Date() })
+		.run();
+}
+
+function shareNote(noteId: string) {
+	db.insert(noteCollaborators)
+		.values({ noteId, userId: COLLAB_ID, addedBy: OWNER_ID, addedAt: new Date() })
+		.run();
+}
+
+beforeEach(() => {
+	const testDb = createTestDb();
+	db = testDb.db;
+	seedUsers();
+});
+
+describe('canAccessNote', () => {
+	it('should allow owner to access their note', () => {
+		seedNote('n1');
+		const result = canAccessNote(db, 'n1', OWNER_ID);
+		expect(result).toEqual({ canAccess: true, isOwner: true });
+	});
+
+	it('should allow collaborator to access shared note', () => {
+		seedNote('n1');
+		shareNote('n1');
+		const result = canAccessNote(db, 'n1', COLLAB_ID);
+		expect(result).toEqual({ canAccess: true, isOwner: false });
+	});
+
+	it('should deny non-collaborator access', () => {
+		seedNote('n1');
+		const result = canAccessNote(db, 'n1', STRANGER_ID);
+		expect(result).toEqual({ canAccess: false, isOwner: false });
+	});
+
+	it('should return false for non-existent note', () => {
+		const result = canAccessNote(db, 'nonexistent', OWNER_ID);
+		expect(result).toEqual({ canAccess: false, isOwner: false });
+	});
+});
+
+describe('requireNoteAccess', () => {
+	it('should throw 404 for unauthorized user', () => {
+		seedNote('n1');
+		expect(() => requireNoteAccess(db, 'n1', STRANGER_ID)).toThrow();
+	});
+
+	it('should return isOwner for authorized owner', () => {
+		seedNote('n1');
+		expect(requireNoteAccess(db, 'n1', OWNER_ID)).toEqual({ isOwner: true });
+	});
+});
+
+describe('requireNoteOwnership', () => {
+	it('should throw 404 for collaborator', () => {
+		seedNote('n1');
+		shareNote('n1');
+		expect(() => requireNoteOwnership(db, 'n1', COLLAB_ID)).toThrow();
+	});
+
+	it('should not throw for owner', () => {
+		seedNote('n1');
+		expect(() => requireNoteOwnership(db, 'n1', OWNER_ID)).not.toThrow();
+	});
+});
+
+describe('getUserId', () => {
+	it('should throw 401 when no user in locals', () => {
+		expect(() => getUserId({ locals: {} as App.Locals })).toThrow();
+	});
+
+	it('should return user id from locals', () => {
+		const id = getUserId({ locals: { user: { id: 42, role: 'user', email: '', displayName: '' } } as App.Locals });
+		expect(id).toBe(42);
+	});
+});

src/lib/server/api-utils.ts

@@ -1,5 +1,5 @@
 import { error } from '@sveltejs/kit';
-import { db } from './db/index.js';
+import type { Db } from './db/index.js';
 import { notes, noteCollaborators } from './db/schema.js';
 import { eq, and } from 'drizzle-orm';
 
@@ -21,7 +21,7 @@ export function requireAdmin(event: EventWithLocals) {
 /**
  * Check if a user can access a note (as owner or collaborator).
  */
-export function canAccessNote(noteId: string, userId: number): { canAccess: boolean; isOwner: boolean } {
+export function canAccessNote(db: Db, noteId: string, userId: number): { canAccess: boolean; isOwner: boolean } {
 	const note = db.select({ userId: notes.userId }).from(notes).where(eq(notes.id, noteId)).get();
 	if (!note) return { canAccess: false, isOwner: false };
 	if (note.userId === userId) return { canAccess: true, isOwner: true };
@@ -37,8 +37,8 @@ export function canAccessNote(noteId: string, userId: number): { canAccess: bool
 /**
  * Require that a user can access a note. Throws 404 if no access.
  */
-export function requireNoteAccess(noteId: string, userId: number): { isOwner: boolean } {
-	const { canAccess, isOwner } = canAccessNote(noteId, userId);
+export function requireNoteAccess(db: Db, noteId: string, userId: number): { isOwner: boolean } {
+	const { canAccess, isOwner } = canAccessNote(db, noteId, userId);
 	if (!canAccess) throw error(404, 'Not found');
 	return { isOwner };
 }
@@ -46,7 +46,7 @@ export function requireNoteAccess(noteId: string, userId: number): { isOwner: bo
 /**
  * Require that a user is the owner of a note. Throws 404 if not owner.
  */
-export function requireNoteOwnership(noteId: string, userId: number): void {
+export function requireNoteOwnership(db: Db, noteId: string, userId: number): void {
 	const note = db.select({ userId: notes.userId }).from(notes).where(eq(notes.id, noteId)).get();
 	if (!note || note.userId !== userId) throw error(404, 'Not found');
 }

src/lib/server/attachments.ts

@@ -2,7 +2,7 @@ import { existsSync, mkdirSync } from 'fs';
 import { writeFile, unlink } from 'fs/promises';
 import { join } from 'path';
 import { v4 as uuidv4 } from 'uuid';
-import { db } from './db/index.js';
+import type { Db } from './db/index.js';
 import { attachments } from './db/schema.js';
 import { eq, and, inArray } from 'drizzle-orm';
 import type { Attachment } from '$lib/types/index.js';
@@ -16,6 +16,7 @@ if (!existsSync(ATTACHMENTS_DIR)) {
 }
 
 export async function saveAttachment(
+	db: Db,
 	noteId: string,
 	file: File,
 	userId: number,
@@ -59,7 +60,7 @@ export async function saveAttachment(
  * Batch fetch attachments for multiple notes in a single query.
  * Returns a Map of noteId → Attachment[].
  */
-export function fetchAttachmentsForNotes(noteIds: string[]): Map<string, Attachment[]> {
+export function fetchAttachmentsForNotes(db: Db, noteIds: string[]): Map<string, Attachment[]> {
 	if (noteIds.length === 0) return new Map();
 
 	const rows = db
@@ -80,7 +81,7 @@ export function fetchAttachmentsForNotes(noteIds: string[]): Map<string, Attachm
 	return map;
 }
 
-export async function getAttachment(id: string, noteId: string) {
+export async function getAttachment(db: Db, id: string, noteId: string) {
 	return db
 		.select()
 		.from(attachments)
@@ -88,11 +89,11 @@ export async function getAttachment(id: string, noteId: string) {
 		.get();
 }
 
-export async function getAttachmentsByNote(noteId: string) {
+export async function getAttachmentsByNote(db: Db, noteId: string) {
 	return db.select().from(attachments).where(eq(attachments.noteId, noteId));
 }
 
-export async function updateAttachment(id: string, noteId: string, data: { featured: boolean }) {
+export async function updateAttachment(db: Db, id: string, noteId: string, data: { featured: boolean }) {
 	const [updated] = await db
 		.update(attachments)
 		.set({ featured: data.featured })
@@ -101,8 +102,8 @@ export async function updateAttachment(id: string, noteId: string, data: { featu
 	return updated ?? null;
 }
 
-export async function deleteAttachment(id: string, noteId: string) {
-	const attachment = await getAttachment(id, noteId);
+export async function deleteAttachment(db: Db, id: string, noteId: string) {
+	const attachment = await getAttachment(db, id, noteId);
 	if (attachment) {
 		try {
 			await unlink(attachment.path);

src/lib/server/auth.ts

@@ -228,6 +228,12 @@ export function getUser(userId: number): User | null {
 
 export async function deleteUser(userId: number): Promise<void> {
 	// Cascade: delete user's data in dependency order
+	sqlite.prepare('DELETE FROM user_preferences WHERE user_id = ?').run(userId);
+	sqlite.prepare('DELETE FROM api_keys WHERE user_id = ?').run(userId);
+	sqlite.prepare('DELETE FROM note_user_state WHERE user_id = ?').run(userId);
+	sqlite
+		.prepare('DELETE FROM note_collaborators WHERE user_id = ? OR added_by = ?')
+		.run(userId, userId);
 	sqlite.prepare('DELETE FROM sync_log WHERE user_id = ?').run(userId);
 	sqlite.prepare('DELETE FROM attachments WHERE user_id = ?').run(userId);
 	sqlite

src/lib/server/collaborators.test.ts

@@ -0,0 +1,83 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { createTestDb } from './db/test-helpers.js';
+import { notes, noteCollaborators, noteUserState, users } from './db/schema.js';
+import { eq, and } from 'drizzle-orm';
+import type { Db } from './db/index.js';
+import { fetchCollaboratorsForNotes, addCollaborator, removeCollaborator } from './collaborators.js';
+
+let db: Db;
+const OWNER_ID = 1;
+const COLLAB_ID = 2;
+
+function seedUsers() {
+	db.insert(users)
+		.values([
+			{ email: 'owner@test.com', displayName: 'Owner', role: 'admin', authProvider: 'password', createdAt: new Date() },
+			{ email: 'collab@test.com', displayName: 'Collab', role: 'user', authProvider: 'password', createdAt: new Date() }
+		])
+		.run();
+}
+
+function seedNote(id: string) {
+	db.insert(notes)
+		.values({ id, userId: OWNER_ID, title: 'Test', content: '', createdAt: new Date(), updatedAt: new Date() })
+		.run();
+}
+
+beforeEach(() => {
+	const testDb = createTestDb();
+	db = testDb.db;
+	seedUsers();
+});
+
+describe('fetchCollaboratorsForNotes', () => {
+	it('should return Map with user details for shared notes', () => {
+		seedNote('n1');
+		addCollaborator(db, 'n1', COLLAB_ID, OWNER_ID);
+
+		const map = fetchCollaboratorsForNotes(db, ['n1']);
+		const collabs = map.get('n1');
+		expect(collabs).toHaveLength(1);
+		expect(collabs![0].userId).toBe(COLLAB_ID);
+		expect(collabs![0].displayName).toBe('Collab');
+		expect(collabs![0].email).toBe('collab@test.com');
+	});
+
+	it('should return empty Map for notes with no collaborators', () => {
+		seedNote('n1');
+		const map = fetchCollaboratorsForNotes(db, ['n1']);
+		expect(map.size).toBe(0);
+	});
+});
+
+describe('addCollaborator', () => {
+	it('should insert collaborator record', () => {
+		seedNote('n1');
+		addCollaborator(db, 'n1', COLLAB_ID, OWNER_ID);
+
+		const rows = db.select().from(noteCollaborators).all();
+		expect(rows).toHaveLength(1);
+		expect(rows[0].userId).toBe(COLLAB_ID);
+		expect(rows[0].addedBy).toBe(OWNER_ID);
+	});
+});
+
+describe('removeCollaborator', () => {
+	it('should clean up noteUserState on removal', () => {
+		seedNote('n1');
+		addCollaborator(db, 'n1', COLLAB_ID, OWNER_ID);
+		db.insert(noteUserState)
+			.values({ noteId: 'n1', userId: COLLAB_ID, pinned: true, archived: false, sortOrder: 0 })
+			.run();
+
+		removeCollaborator(db, 'n1', COLLAB_ID);
+
+		const collabs = db.select().from(noteCollaborators).all();
+		expect(collabs).toHaveLength(0);
+
+		const states = db.select().from(noteUserState)
+			.where(and(eq(noteUserState.noteId, 'n1'), eq(noteUserState.userId, COLLAB_ID)))
+			.all();
+		expect(states).toHaveLength(0);
+	});
+});

src/lib/server/collaborators.ts

@@ -1,4 +1,4 @@
-import { db } from './db/index.js';
+import type { Db } from './db/index.js';
 import { noteCollaborators, noteUserState, users } from './db/schema.js';
 import { eq, and, inArray } from 'drizzle-orm';
 import type { Collaborator } from '$lib/types/index.js';
@@ -7,7 +7,7 @@ import type { Collaborator } from '$lib/types/index.js';
  * Batch fetch collaborators for multiple notes.
  * Returns a Map of noteId → Collaborator[].
  */
-export function fetchCollaboratorsForNotes(noteIds: string[]): Map<string, Collaborator[]> {
+export function fetchCollaboratorsForNotes(db: Db, noteIds: string[]): Map<string, Collaborator[]> {
 	if (noteIds.length === 0) return new Map();
 
 	const rows = db
@@ -44,7 +44,7 @@ export function fetchCollaboratorsForNotes(noteIds: string[]): Map<string, Colla
 /**
  * Add a collaborator to a note.
  */
-export function addCollaborator(noteId: string, userId: number, addedBy: number): void {
+export function addCollaborator(db: Db, noteId: string, userId: number, addedBy: number): void {
 	db.insert(noteCollaborators)
 		.values({ noteId, userId, addedBy, addedAt: new Date() })
 		.run();
@@ -53,7 +53,7 @@ export function addCollaborator(noteId: string, userId: number, addedBy: number)
 /**
  * Remove a collaborator from a note. Also cleans up their per-user state.
  */
-export function removeCollaborator(noteId: string, userId: number): void {
+export function removeCollaborator(db: Db, noteId: string, userId: number): void {
 	db.delete(noteCollaborators)
 		.where(and(eq(noteCollaborators.noteId, noteId), eq(noteCollaborators.userId, userId)))
 		.run();
@@ -65,7 +65,7 @@ export function removeCollaborator(noteId: string, userId: number): void {
 /**
  * Get all collaborator user IDs for a note.
  */
-export function getCollaboratorIds(noteId: string): number[] {
+export function getCollaboratorIds(db: Db, noteId: string): number[] {
 	return db
 		.select({ userId: noteCollaborators.userId })
 		.from(noteCollaborators)

src/lib/server/db/index.ts

@@ -115,6 +115,26 @@ sqlite.exec(`
 		success INTEGER NOT NULL,
 		timestamp INTEGER NOT NULL
 	);
+
+	CREATE TABLE IF NOT EXISTS user_preferences (
+		id INTEGER PRIMARY KEY AUTOINCREMENT,
+		user_id INTEGER NOT NULL REFERENCES users(id),
+		key TEXT NOT NULL,
+		value TEXT NOT NULL,
+		updated_at INTEGER NOT NULL
+	);
+
+	CREATE TABLE IF NOT EXISTS note_versions (
+		id TEXT PRIMARY KEY,
+		note_id TEXT NOT NULL REFERENCES notes(id) ON DELETE CASCADE,
+		version INTEGER NOT NULL,
+		title TEXT NOT NULL DEFAULT '',
+		content TEXT NOT NULL DEFAULT '',
+		checklist_mode INTEGER NOT NULL DEFAULT 0,
+		color TEXT NOT NULL DEFAULT 'default',
+		created_at INTEGER NOT NULL,
+		UNIQUE(note_id, version)
+	);
 `);
 
 // Migration: detect old schema (no email column on users) and add columns
@@ -186,6 +206,9 @@ sqlite.exec(`
 	CREATE UNIQUE INDEX IF NOT EXISTS note_collaborators_unique ON note_collaborators(note_id, user_id);
 	CREATE INDEX IF NOT EXISTS note_collaborators_user_id_idx ON note_collaborators(user_id);
 	CREATE UNIQUE INDEX IF NOT EXISTS note_user_state_unique ON note_user_state(note_id, user_id);
+	CREATE UNIQUE INDEX IF NOT EXISTS user_preferences_user_key_unique ON user_preferences(user_id, key);
+
+	CREATE INDEX IF NOT EXISTS note_versions_note_id_idx ON note_versions(note_id);
 
 	CREATE TABLE IF NOT EXISTS api_keys (
 		id TEXT PRIMARY KEY,
@@ -247,4 +270,5 @@ if (pwCol && pwCol.notnull) {
 sqlite.pragma('foreign_keys = ON');
 
 export const db = drizzle(sqlite, { schema });
+export type Db = import('drizzle-orm/better-sqlite3').BetterSQLite3Database<typeof schema>;
 export { sqlite };

src/lib/server/db/schema.ts

@@ -175,3 +175,37 @@ export const loginAttempts = sqliteTable(
 	},
 	(table) => [index('login_attempts_ip_timestamp_idx').on(table.ip, table.timestamp)]
 );
+
+export const userPreferences = sqliteTable(
+	'user_preferences',
+	{
+		id: integer('id').primaryKey({ autoIncrement: true }),
+		userId: integer('user_id')
+			.references(() => users.id)
+			.notNull(),
+		key: text('key').notNull(),
+		value: text('value').notNull(),
+		updatedAt: integer('updated_at', { mode: 'timestamp' }).notNull()
+	},
+	(table) => [uniqueIndex('user_preferences_user_key_unique').on(table.userId, table.key)]
+);
+
+export const noteVersions = sqliteTable(
+	'note_versions',
+	{
+		id: text('id').primaryKey(),
+		noteId: text('note_id')
+			.references(() => notes.id, { onDelete: 'cascade' })
+			.notNull(),
+		version: integer('version').notNull(),
+		title: text('title').notNull().default(''),
+		content: text('content').notNull().default(''),
+		checklistMode: integer('checklist_mode', { mode: 'boolean' }).notNull().default(false),
+		color: text('color').notNull().default('default'),
+		createdAt: integer('created_at', { mode: 'timestamp' }).notNull()
+	},
+	(table) => [
+		index('note_versions_note_id_idx').on(table.noteId),
+		uniqueIndex('note_versions_note_id_version_unique').on(table.noteId, table.version)
+	]
+);

src/lib/server/db/test-helpers.ts

@@ -94,6 +94,8 @@ export function createTestDb(options?: { seedUser?: boolean }) {
 			mime_type TEXT NOT NULL,
 			size INTEGER NOT NULL,
 			path TEXT NOT NULL,
+			thumbnail_path TEXT,
+			featured INTEGER NOT NULL DEFAULT 0,
 			created_at INTEGER NOT NULL
 		);
 
@@ -125,6 +127,28 @@ export function createTestDb(options?: { seedUser?: boolean }) {
 			created_at INTEGER NOT NULL,
 			last_used_at INTEGER
 		);
+
+		CREATE TABLE user_preferences (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			user_id INTEGER NOT NULL REFERENCES users(id),
+			key TEXT NOT NULL,
+			value TEXT NOT NULL,
+			updated_at INTEGER NOT NULL
+		);
+		CREATE UNIQUE INDEX user_preferences_user_key_unique ON user_preferences(user_id, key);
+
+		CREATE TABLE note_versions (
+			id TEXT PRIMARY KEY,
+			note_id TEXT NOT NULL REFERENCES notes(id) ON DELETE CASCADE,
+			version INTEGER NOT NULL,
+			title TEXT NOT NULL DEFAULT '',
+			content TEXT NOT NULL DEFAULT '',
+			checklist_mode INTEGER NOT NULL DEFAULT 0,
+			color TEXT NOT NULL DEFAULT 'default',
+			created_at INTEGER NOT NULL,
+			UNIQUE(note_id, version)
+		);
+		CREATE INDEX note_versions_note_id_idx ON note_versions(note_id);
 	`);
 
 	const db = drizzle(sqlite, { schema });

src/lib/server/email.ts

@@ -0,0 +1,353 @@
+import nodemailer from 'nodemailer';
+import type { Transporter } from 'nodemailer';
+
+let transporter: Transporter | null = null;
+
+/**
+ * Check if SMTP email is configured via environment variables.
+ */
+export function isEmailConfigured(): boolean {
+	return !!process.env.SMTP_HOST;
+}
+
+/**
+ * Get or create the nodemailer transport (lazy singleton).
+ */
+function getTransporter(): Transporter {
+	if (!transporter) {
+		transporter = nodemailer.createTransport({
+			host: process.env.SMTP_HOST,
+			port: parseInt(process.env.SMTP_PORT || '587', 10),
+			secure: process.env.SMTP_PORT === '465',
+			auth:
+				process.env.SMTP_USER
+					? {
+							user: process.env.SMTP_USER,
+							pass: process.env.SMTP_PASS || ''
+						}
+					: undefined
+		});
+	}
+	return transporter;
+}
+
+/**
+ * Send an email. Best-effort: logs errors but does not throw.
+ */
+async function sendEmail(to: string, subject: string, html: string): Promise<void> {
+	try {
+		const transport = getTransporter();
+		await transport.sendMail({
+			from: process.env.SMTP_FROM || 'Crumbs <noreply@localhost>',
+			to,
+			subject,
+			html
+		});
+	} catch (err) {
+		console.error('[email] Failed to send:', err);
+	}
+}
+
+/**
+ * Send a share notification email to a collaborator.
+ */
+export async function sendShareNotification(
+	toEmail: string,
+	toName: string,
+	fromName: string,
+	noteTitle: string,
+	appUrl: string
+): Promise<void> {
+	if (!toEmail) return;
+
+	const subject = `${fromName} shared a note with you`;
+	const html = buildShareEmailHtml(toName, fromName, noteTitle, appUrl);
+	await sendEmail(toEmail, subject, html);
+}
+
+/**
+ * Send a welcome email to a newly created user.
+ */
+export async function sendWelcomeEmail(
+	toEmail: string,
+	toName: string,
+	appUrl: string
+): Promise<void> {
+	if (!toEmail) return;
+
+	const subject = 'Welcome to Crumbs';
+	const html = buildWelcomeEmailHtml(toName, appUrl);
+	await sendEmail(toEmail, subject, html);
+}
+
+/**
+ * Send a password reset notification to a user (triggered by admin reset).
+ */
+export async function sendPasswordResetEmail(
+	toEmail: string,
+	toName: string,
+	appUrl: string
+): Promise<void> {
+	if (!toEmail) return;
+
+	const subject = 'Your Crumbs password has been reset';
+	const html = buildPasswordResetEmailHtml(toName, appUrl);
+	await sendEmail(toEmail, subject, html);
+}
+
+/**
+ * Send an account deletion confirmation email.
+ */
+export async function sendAccountDeletedEmail(toEmail: string, toName: string): Promise<void> {
+	if (!toEmail) return;
+
+	const subject = 'Your Crumbs account has been deleted';
+	const html = buildAccountDeletedEmailHtml(toName);
+	await sendEmail(toEmail, subject, html);
+}
+
+/**
+ * Send a notification to the old email when the account email address changes.
+ */
+export async function sendEmailChangedEmail(
+	oldEmail: string,
+	toName: string,
+	newEmail: string
+): Promise<void> {
+	if (!oldEmail) return;
+
+	const subject = 'Your Crumbs email address has been changed';
+	const html = buildEmailChangedEmailHtml(toName, newEmail);
+	await sendEmail(oldEmail, subject, html);
+}
+
+/**
+ * Send a role change notification to a user.
+ */
+export async function sendRoleChangedEmail(
+	toEmail: string,
+	toName: string,
+	newRole: 'admin' | 'user',
+	appUrl: string
+): Promise<void> {
+	if (!toEmail) return;
+
+	const subject = 'Your Crumbs account role has been updated';
+	const html = buildRoleChangedEmailHtml(toName, newRole, appUrl);
+	await sendEmail(toEmail, subject, html);
+}
+
+/**
+ * Send a notification to a collaborator that they have been removed from a note.
+ */
+export async function sendCollaboratorRemovedEmail(
+	toEmail: string,
+	toName: string,
+	ownerName: string,
+	noteTitle: string,
+	appUrl: string
+): Promise<void> {
+	if (!toEmail) return;
+
+	const subject = `You've been removed from a shared note`;
+	const html = buildCollaboratorRemovedEmailHtml(toName, ownerName, noteTitle, appUrl);
+	await sendEmail(toEmail, subject, html);
+}
+
+/**
+ * Send a notification to collaborators that a shared note has been permanently deleted.
+ */
+export async function sendNotePermanentlyDeletedEmail(
+	toEmail: string,
+	toName: string,
+	noteTitle: string
+): Promise<void> {
+	if (!toEmail) return;
+
+	const subject = `A shared note has been deleted`;
+	const html = buildNotePermanentlyDeletedEmailHtml(toName, noteTitle);
+	await sendEmail(toEmail, subject, html);
+}
+
+/**
+ * Send a security alert to a user when their account is locked due to too many failed logins.
+ */
+export async function sendAccountLockedEmail(
+	toEmail: string,
+	toName: string,
+	retryAfterMinutes: number
+): Promise<void> {
+	if (!toEmail) return;
+
+	const subject = 'Crumbs account temporarily locked';
+	const html = buildAccountLockedEmailHtml(toName, retryAfterMinutes);
+	await sendEmail(toEmail, subject, html);
+}
+
+function buildShareEmailHtml(
+	toName: string,
+	fromName: string,
+	noteTitle: string,
+	appUrl: string
+): string {
+	const displayName = toName || 'there';
+	const escapedTitle = escapeHtml(noteTitle);
+	const escapedFrom = escapeHtml(fromName || 'Someone');
+	const content = `<h1 style="margin:0 0 24px;font-size:18px;color:#1a1a2e;font-weight:bold;">Note shared with you</h1>
+          <p style="margin:0 0 16px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Hey ${escapeHtml(displayName)},
+          </p>
+          <p style="margin:0 0 24px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            <strong>${escapedFrom}</strong> shared a note with you: <strong>&ldquo;${escapedTitle}&rdquo;</strong>
+          </p>
+          ${buildOpenButton(appUrl)}`;
+	return buildEmailLayout(content, 'You&rsquo;re receiving this because someone shared a note with you on Crumbs.');
+}
+
+function buildEmailLayout(content: string, footer: string): string {
+	return `<!DOCTYPE html>
+<html>
+<head><meta charset="utf-8"></head>
+<body style="margin:0;padding:0;background-color:#f0e6d3;font-family:'JetBrains Mono',monospace;">
+  <table width="100%" cellpadding="0" cellspacing="0" style="background-color:#f0e6d3;padding:40px 20px;">
+    <tr><td align="center">
+      <table width="500" cellpadding="0" cellspacing="0" style="background-color:#faf5eb;border:1px solid #d4cabb;box-shadow:2px 2px 0px #d4cabb;">
+        <tr><td style="padding:32px;">
+          <p style="margin:0 0 8px;font-size:11px;color:#C8860A;text-transform:uppercase;letter-spacing:2px;">Crumbs</p>
+          ${content}
+          <p style="margin:0;font-size:11px;color:#6b6272;line-height:1.5;">${footer}</p>
+        </td></tr>
+      </table>
+    </td></tr>
+  </table>
+</body>
+</html>`;
+}
+
+function buildOpenButton(appUrl: string, label = 'Open Crumbs'): string {
+	return `<table cellpadding="0" cellspacing="0" style="margin:0 0 24px;">
+            <tr><td style="background-color:#C8860A;box-shadow:2px 2px 0px #1a1a2e;">
+              <a href="${escapeHtml(appUrl)}" style="display:inline-block;padding:10px 24px;color:#faf5eb;font-size:13px;font-weight:bold;text-decoration:none;font-family:'JetBrains Mono',monospace;">${escapeHtml(label)}</a>
+            </td></tr>
+          </table>`;
+}
+
+function buildWelcomeEmailHtml(toName: string, appUrl: string): string {
+	const displayName = escapeHtml(toName || 'there');
+	const content = `<h1 style="margin:0 0 24px;font-size:18px;color:#1a1a2e;font-weight:bold;">Welcome to Crumbs</h1>
+          <p style="margin:0 0 16px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Hey ${displayName},
+          </p>
+          <p style="margin:0 0 24px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            An admin has created an account for you on Crumbs. You can log in and start taking notes right away.
+          </p>
+          ${buildOpenButton(appUrl)}`;
+	return buildEmailLayout(content, 'You&rsquo;re receiving this because an admin created an account for you on Crumbs.');
+}
+
+function buildPasswordResetEmailHtml(toName: string, appUrl: string): string {
+	const displayName = escapeHtml(toName || 'there');
+	const content = `<h1 style="margin:0 0 24px;font-size:18px;color:#1a1a2e;font-weight:bold;">Password reset</h1>
+          <p style="margin:0 0 16px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Hey ${displayName},
+          </p>
+          <p style="margin:0 0 24px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            An admin has reset your Crumbs password. Please log in and change it to something only you know.
+          </p>
+          ${buildOpenButton(appUrl)}`;
+	return buildEmailLayout(content, 'You&rsquo;re receiving this because an admin reset your password on Crumbs. If you didn&rsquo;t expect this, please contact your admin.');
+}
+
+function buildAccountDeletedEmailHtml(toName: string): string {
+	const displayName = escapeHtml(toName || 'there');
+	const content = `<h1 style="margin:0 0 24px;font-size:18px;color:#1a1a2e;font-weight:bold;">Account deleted</h1>
+          <p style="margin:0 0 16px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Hey ${displayName},
+          </p>
+          <p style="margin:0 0 24px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Your Crumbs account and all associated data have been permanently deleted.
+          </p>`;
+	return buildEmailLayout(content, 'You&rsquo;re receiving this as confirmation that your Crumbs account was deleted.');
+}
+
+function buildEmailChangedEmailHtml(toName: string, newEmail: string): string {
+	const displayName = escapeHtml(toName || 'there');
+	const content = `<h1 style="margin:0 0 24px;font-size:18px;color:#1a1a2e;font-weight:bold;">Email address changed</h1>
+          <p style="margin:0 0 16px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Hey ${displayName},
+          </p>
+          <p style="margin:0 0 24px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Your Crumbs account email address has been changed to <strong>${escapeHtml(newEmail)}</strong>. If you did not make this change, please contact your admin immediately.
+          </p>`;
+	return buildEmailLayout(content, 'You&rsquo;re receiving this security notice because your Crumbs account email was updated.');
+}
+
+function buildRoleChangedEmailHtml(toName: string, newRole: 'admin' | 'user', appUrl: string): string {
+	const displayName = escapeHtml(toName || 'there');
+	const roleLabel = newRole === 'admin' ? 'Admin' : 'User';
+	const detail = newRole === 'admin'
+		? 'You now have admin privileges, including the ability to manage users and settings.'
+		: 'Your account no longer has admin privileges.';
+	const content = `<h1 style="margin:0 0 24px;font-size:18px;color:#1a1a2e;font-weight:bold;">Role updated: ${roleLabel}</h1>
+          <p style="margin:0 0 16px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Hey ${displayName},
+          </p>
+          <p style="margin:0 0 24px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Your Crumbs account role has been updated to <strong>${escapeHtml(roleLabel)}</strong>. ${escapeHtml(detail)}
+          </p>
+          ${buildOpenButton(appUrl)}`;
+	return buildEmailLayout(content, 'You&rsquo;re receiving this because your account role was changed on Crumbs.');
+}
+
+function buildCollaboratorRemovedEmailHtml(
+	toName: string,
+	ownerName: string,
+	noteTitle: string,
+	appUrl: string
+): string {
+	const displayName = escapeHtml(toName || 'there');
+	const escapedOwner = escapeHtml(ownerName || 'Someone');
+	const escapedTitle = escapeHtml(noteTitle);
+	const content = `<h1 style="margin:0 0 24px;font-size:18px;color:#1a1a2e;font-weight:bold;">Removed from shared note</h1>
+          <p style="margin:0 0 16px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Hey ${displayName},
+          </p>
+          <p style="margin:0 0 24px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            <strong>${escapedOwner}</strong> has removed you from the shared note <strong>&ldquo;${escapedTitle}&rdquo;</strong>. You no longer have access to this note.
+          </p>
+          ${buildOpenButton(appUrl)}`;
+	return buildEmailLayout(content, 'You&rsquo;re receiving this because you were removed from a shared note on Crumbs.');
+}
+
+function buildNotePermanentlyDeletedEmailHtml(toName: string, noteTitle: string): string {
+	const displayName = escapeHtml(toName || 'there');
+	const escapedTitle = escapeHtml(noteTitle);
+	const content = `<h1 style="margin:0 0 24px;font-size:18px;color:#1a1a2e;font-weight:bold;">Shared note deleted</h1>
+          <p style="margin:0 0 16px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Hey ${displayName},
+          </p>
+          <p style="margin:0 0 24px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            The shared note <strong>&ldquo;${escapedTitle}&rdquo;</strong> has been permanently deleted by its owner. You no longer have access to it.
+          </p>`;
+	return buildEmailLayout(content, 'You&rsquo;re receiving this because a shared note you had access to was deleted on Crumbs.');
+}
+
+function buildAccountLockedEmailHtml(toName: string, retryAfterMinutes: number): string {
+	const displayName = escapeHtml(toName || 'there');
+	const content = `<h1 style="margin:0 0 24px;font-size:18px;color:#1a1a2e;font-weight:bold;">Account temporarily locked</h1>
+          <p style="margin:0 0 16px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Hey ${displayName},
+          </p>
+          <p style="margin:0 0 24px;font-size:14px;color:#1a1a2e;line-height:1.6;">
+            Too many failed login attempts were made on your Crumbs account. For your security, login has been temporarily blocked for <strong>${retryAfterMinutes} minute${retryAfterMinutes === 1 ? '' : 's'}</strong>. If this wasn&rsquo;t you, please change your password once you regain access.
+          </p>`;
+	return buildEmailLayout(content, 'You&rsquo;re receiving this security alert because of repeated failed login attempts on your Crumbs account.');
+}
+
+function escapeHtml(str: string): string {
+	return str
+		.replace(/&/g, '&amp;')
+		.replace(/</g, '&lt;')
+		.replace(/>/g, '&gt;')
+		.replace(/"/g, '&quot;');
+}

src/lib/server/mcp/server.ts

@@ -12,6 +12,7 @@ import {
 	reorderNotes
 } from '../notes-service.js';
 import { saveAttachment } from '../attachments.js';
+import { db } from '../db/index.js';
 
 const NOTE_COLORS = [
 	'default',
@@ -45,7 +46,7 @@ export function createMcpServer(userId: number): McpServer {
 			tag: z.string().optional().describe('Filter by tag name')
 		},
 		async ({ filter = 'all', tag }: { filter?: string; tag?: string }) => {
-			let result = listNotes(userId, filter as NoteFilter);
+			let result = listNotes(db, userId, filter as NoteFilter);
 
 			if (tag) {
 				result = result.filter((n) =>
@@ -64,7 +65,7 @@ export function createMcpServer(userId: number): McpServer {
 		'Get a single note by ID with its tags and attachments',
 		{ id: z.string().describe('Note ID') },
 		async ({ id }: { id: string }) => {
-			const note = getNote(userId, id);
+			const note = getNote(db, userId, id);
 			if (!note) {
 				return {
 					content: [{ type: 'text' as const, text: 'Note not found' }],
@@ -88,7 +89,7 @@ export function createMcpServer(userId: number): McpServer {
 			checklistMode: z.boolean().optional().describe('Enable checklist mode')
 		},
 		async ({ title, content, color, checklistMode }: { title?: string; content?: string; color?: string; checklistMode?: boolean }) => {
-			const note = createNote(userId, { title, content, color, checklistMode });
+			const note = createNote(db, userId, { title, content, color, checklistMode });
 			return {
 				content: [{ type: 'text' as const, text: JSON.stringify(note, null, 2) }]
 			};
@@ -107,7 +108,7 @@ export function createMcpServer(userId: number): McpServer {
 			checklistMode: z.boolean().optional().describe('Enable/disable checklist mode')
 		},
 		async ({ id, ...updates }: { id: string; title?: string; content?: string; color?: string; pinned?: boolean; checklistMode?: boolean }) => {
-			const result = updateNote(userId, id, updates);
+			const result = updateNote(db, userId, id, updates);
 			if (!result) {
 				return {
 					content: [{ type: 'text' as const, text: 'Note not found' }],
@@ -126,7 +127,7 @@ export function createMcpServer(userId: number): McpServer {
 		'Move a note to trash',
 		{ id: z.string().describe('Note ID') },
 		async ({ id }: { id: string }) => {
-			const result = updateNote(userId, id, { trashed: true });
+			const result = updateNote(db, userId, id, { trashed: true });
 			if (!result) {
 				return {
 					content: [{ type: 'text' as const, text: 'Note not found' }],
@@ -144,7 +145,7 @@ export function createMcpServer(userId: number): McpServer {
 		'Restore a note from trash',
 		{ id: z.string().describe('Note ID') },
 		async ({ id }: { id: string }) => {
-			const result = updateNote(userId, id, { trashed: false });
+			const result = updateNote(db, userId, id, { trashed: false });
 			if (!result) {
 				return {
 					content: [{ type: 'text' as const, text: 'Note not found' }],
@@ -162,7 +163,7 @@ export function createMcpServer(userId: number): McpServer {
 		'Archive a note',
 		{ id: z.string().describe('Note ID') },
 		async ({ id }: { id: string }) => {
-			const result = updateNote(userId, id, { archived: true });
+			const result = updateNote(db, userId, id, { archived: true });
 			if (!result) {
 				return {
 					content: [{ type: 'text' as const, text: 'Note not found' }],
@@ -180,7 +181,7 @@ export function createMcpServer(userId: number): McpServer {
 		'Unarchive a note',
 		{ id: z.string().describe('Note ID') },
 		async ({ id }: { id: string }) => {
-			const result = updateNote(userId, id, { archived: false });
+			const result = updateNote(db, userId, id, { archived: false });
 			if (!result) {
 				return {
 					content: [{ type: 'text' as const, text: 'Note not found' }],
@@ -198,7 +199,7 @@ export function createMcpServer(userId: number): McpServer {
 		'Permanently delete a note',
 		{ id: z.string().describe('Note ID') },
 		async ({ id }: { id: string }) => {
-			const existing = getNote(userId, id);
+			const existing = getNote(db, userId, id);
 			if (!existing) {
 				return {
 					content: [{ type: 'text' as const, text: 'Note not found' }],
@@ -206,7 +207,7 @@ export function createMcpServer(userId: number): McpServer {
 				};
 			}
 
-			deleteNote(userId, id);
+			deleteNote(db, userId, id);
 			return {
 				content: [
 					{
@@ -223,7 +224,7 @@ export function createMcpServer(userId: number): McpServer {
 		'Search notes by title, content, or tag name',
 		{ query: z.string().describe('Search query') },
 		async ({ query }: { query: string }) => {
-			const results = searchNotes(userId, query);
+			const results = searchNotes(db, userId, query);
 			return {
 				content: [{ type: 'text' as const, text: JSON.stringify(results, null, 2) }]
 			};
@@ -231,7 +232,7 @@ export function createMcpServer(userId: number): McpServer {
 	);
 
 	server.tool('list_tags', 'List all tags', {}, async () => {
-		const allTags = listAllTags(userId);
+		const allTags = listAllTags(db, userId);
 		return {
 			content: [{ type: 'text' as const, text: JSON.stringify(allTags, null, 2) }]
 		};
@@ -245,7 +246,7 @@ export function createMcpServer(userId: number): McpServer {
 			pinned: z.boolean().describe('Whether to pin (true) or unpin (false)')
 		},
 		async ({ id, pinned }: { id: string; pinned: boolean }) => {
-			const result = updateNote(userId, id, { pinned });
+			const result = updateNote(db, userId, id, { pinned });
 			if (!result) {
 				return {
 					content: [{ type: 'text' as const, text: 'Note not found' }],
@@ -277,7 +278,7 @@ export function createMcpServer(userId: number): McpServer {
 				.describe('Array of note IDs with their new sort orders')
 		},
 		async ({ orders }: { orders: { id: string; sortOrder: number }[] }) => {
-			reorderNotes(userId, orders);
+			reorderNotes(db, userId, orders);
 			return {
 				content: [{ type: 'text' as const, text: `Reordered ${orders.length} notes` }]
 			};
@@ -292,7 +293,7 @@ export function createMcpServer(userId: number): McpServer {
 			imageUrl: z.string().url().describe('URL of the image to fetch')
 		},
 		async ({ noteId, imageUrl }: { noteId: string; imageUrl: string }) => {
-			const existing = getNote(userId, noteId);
+			const existing = getNote(db, userId, noteId);
 			if (!existing) {
 				return {
 					content: [{ type: 'text' as const, text: 'Note not found' }],
@@ -320,7 +321,7 @@ export function createMcpServer(userId: number): McpServer {
 				const filename = `upload_${Date.now()}.${ext}`;
 
 				const file = new File([buffer], filename, { type: contentType });
-				const attachment = await saveAttachment(noteId, file, userId);
+				const attachment = await saveAttachment(db, noteId, file, userId);
 
 				return {
 					content: [{ type: 'text' as const, text: JSON.stringify(attachment, null, 2) }]

src/lib/server/notes-service.test.ts

@@ -0,0 +1,336 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { createTestDb } from './db/test-helpers.js';
+import { notes, noteCollaborators, noteUserState, noteVersions, users } from './db/schema.js';
+import { eq, and } from 'drizzle-orm';
+import type { Db } from './db/index.js';
+import {
+	listNotes,
+	getNote,
+	createNote,
+	updateNote,
+	deleteNote,
+	searchNotes,
+	reorderNotes
+} from './notes-service.js';
+
+let db: Db;
+
+const OWNER_ID = 1;
+const COLLAB_ID = 2;
+
+function seedUsers() {
+	db.insert(users)
+		.values([
+			{
+				email: 'owner@test.com',
+				displayName: 'Owner',
+				role: 'admin',
+				authProvider: 'password',
+				createdAt: new Date()
+			},
+			{
+				email: 'collab@test.com',
+				displayName: 'Collab',
+				role: 'user',
+				authProvider: 'password',
+				createdAt: new Date()
+			}
+		])
+		.run();
+}
+
+function seedNote(
+	id: string,
+	overrides: Partial<typeof notes.$inferInsert> = {}
+) {
+	const now = new Date();
+	db.insert(notes)
+		.values({
+			id,
+			userId: OWNER_ID,
+			title: '',
+			content: '',
+			createdAt: now,
+			updatedAt: now,
+			...overrides
+		})
+		.run();
+	return id;
+}
+
+function shareNote(noteId: string, userId = COLLAB_ID) {
+	db.insert(noteCollaborators)
+		.values({
+			noteId,
+			userId,
+			addedBy: OWNER_ID,
+			addedAt: new Date()
+		})
+		.run();
+}
+
+beforeEach(() => {
+	const testDb = createTestDb();
+	db = testDb.db;
+	seedUsers();
+});
+
+describe('listNotes', () => {
+	it('should return only active owned notes (excludes archived/trashed)', () => {
+		seedNote('active', { title: 'Active' });
+		seedNote('archived', { title: 'Archived', archived: true });
+		seedNote('trashed', { title: 'Trashed', trashed: true });
+
+		const result = listNotes(db, OWNER_ID);
+		expect(result).toHaveLength(1);
+		expect(result[0].title).toBe('Active');
+	});
+
+	it('should include shared notes with per-user state overlay', () => {
+		seedNote('shared', { title: 'Shared Note' });
+		shareNote('shared');
+		db.insert(noteUserState)
+			.values({ noteId: 'shared', userId: COLLAB_ID, pinned: true, archived: false, sortOrder: 5 })
+			.run();
+
+		const result = listNotes(db, COLLAB_ID);
+		expect(result).toHaveLength(1);
+		expect(result[0].title).toBe('Shared Note');
+		expect(result[0].pinned).toBeTruthy();
+		expect(result[0].sortOrder).toBe(5);
+	});
+
+	it('should sort pinned first, then by updatedAt desc', () => {
+		const old = new Date('2024-01-01');
+		const recent = new Date('2024-01-02');
+		seedNote('old-pinned', { title: 'Old Pinned', pinned: true, updatedAt: old, createdAt: old });
+		seedNote('recent', { title: 'Recent', updatedAt: recent, createdAt: recent });
+		seedNote('old', { title: 'Old', updatedAt: old, createdAt: old });
+
+		const result = listNotes(db, OWNER_ID);
+		expect(result.map((n) => n.title)).toEqual(['Old Pinned', 'Recent', 'Old']);
+	});
+
+	it('should return only archived notes with archived filter', () => {
+		seedNote('active', { title: 'Active' });
+		seedNote('archived', { title: 'Archived', archived: true });
+		seedNote('shared', { title: 'Shared Archived' });
+		shareNote('shared');
+		db.insert(noteUserState)
+			.values({ noteId: 'shared', userId: COLLAB_ID, pinned: false, archived: true, sortOrder: 0 })
+			.run();
+
+		// Owner sees their archived note
+		const ownerResult = listNotes(db, OWNER_ID, 'archived');
+		expect(ownerResult).toHaveLength(1);
+		expect(ownerResult[0].title).toBe('Archived');
+
+		// Collaborator sees shared note they archived
+		const collabResult = listNotes(db, COLLAB_ID, 'archived');
+		expect(collabResult).toHaveLength(1);
+		expect(collabResult[0].title).toBe('Shared Archived');
+	});
+
+	it('should exclude shared notes from trashed filter', () => {
+		seedNote('trashed', { title: 'Trashed', trashed: true });
+		seedNote('shared', { title: 'Shared' });
+		shareNote('shared');
+
+		const result = listNotes(db, COLLAB_ID, 'trashed');
+		expect(result).toHaveLength(0);
+	});
+});
+
+describe('getNote', () => {
+	it('should return null for non-existent note', () => {
+		expect(getNote(db, OWNER_ID, 'nonexistent')).toBeNull();
+	});
+
+	it('should return null if user has no access', () => {
+		seedNote('private', { title: 'Private' });
+		expect(getNote(db, COLLAB_ID, 'private')).toBeNull();
+	});
+
+	it('should overlay collaborator per-user state', () => {
+		seedNote('shared', { title: 'Shared', pinned: true, sortOrder: 10 });
+		shareNote('shared');
+		db.insert(noteUserState)
+			.values({ noteId: 'shared', userId: COLLAB_ID, pinned: false, archived: true, sortOrder: 5 })
+			.run();
+
+		const note = getNote(db, COLLAB_ID, 'shared');
+		expect(note).not.toBeNull();
+		expect(note!.pinned).toBeFalsy();
+		expect(note!.archived).toBeTruthy();
+		expect(note!.sortOrder).toBe(5);
+	});
+});
+
+describe('createNote', () => {
+	it('should generate UUID and set version=1', () => {
+		const note = createNote(db, OWNER_ID, { title: 'Test' });
+		expect(note.id).toBeDefined();
+		expect(note.id.length).toBe(36); // UUID format
+		expect(note.version).toBe(1);
+	});
+
+	it('should use provided ID when given', () => {
+		const note = createNote(db, OWNER_ID, { id: 'custom-id', title: 'Test' });
+		expect(note.id).toBe('custom-id');
+	});
+
+	it('should extract tags from content', () => {
+		const note = createNote(db, OWNER_ID, {
+			title: 'My #todo note',
+			content: 'Some #important content'
+		});
+		expect(note.tags).toContain('todo');
+		expect(note.tags).toContain('important');
+	});
+});
+
+describe('updateNote', () => {
+	it('should allow owner to update shared fields directly', () => {
+		seedNote('n1', { title: 'Original' });
+		const updated = updateNote(db, OWNER_ID, 'n1', { title: 'Updated' });
+		expect(updated).not.toBeNull();
+		expect(updated!.title).toBe('Updated');
+	});
+
+	it('should allow collaborator to edit content', () => {
+		seedNote('n1', { title: 'Original', content: 'Old' });
+		shareNote('n1');
+		const updated = updateNote(db, COLLAB_ID, 'n1', { content: 'New content' });
+		expect(updated).not.toBeNull();
+		expect(updated!.content).toBe('New content');
+	});
+
+	it('should route collaborator per-user fields to noteUserState', () => {
+		seedNote('n1', { title: 'Note', pinned: false });
+		shareNote('n1');
+		updateNote(db, COLLAB_ID, 'n1', { pinned: true, sortOrder: 7 });
+
+		// Owner's note pinned should be unchanged
+		const ownerView = getNote(db, OWNER_ID, 'n1');
+		expect(ownerView!.pinned).toBeFalsy();
+
+		// Collaborator sees their per-user state
+		const collabView = getNote(db, COLLAB_ID, 'n1');
+		expect(collabView!.pinned).toBeTruthy();
+		expect(collabView!.sortOrder).toBe(7);
+	});
+
+	it('should return null when collaborator tries to trash', () => {
+		seedNote('n1', { title: 'Note' });
+		shareNote('n1');
+		const result = updateNote(db, COLLAB_ID, 'n1', { trashed: true });
+		expect(result).toBeNull();
+	});
+
+	it('should increment version on update', () => {
+		seedNote('n1', { title: 'V1' });
+		const updated = updateNote(db, OWNER_ID, 'n1', { title: 'V2' });
+		expect(updated!.version).toBe(2);
+	});
+
+	it('should create a snapshot when content changes', () => {
+		seedNote('n1', { title: 'Original', content: 'Hello', color: 'default', checklistMode: false });
+		updateNote(db, OWNER_ID, 'n1', { title: 'Changed' });
+
+		const snapshots = db.select().from(noteVersions).where(eq(noteVersions.noteId, 'n1')).all();
+		expect(snapshots).toHaveLength(1);
+	});
+
+	it('should not create a snapshot when no content field actually changed', () => {
+		seedNote('n1', { title: 'Same', content: 'Same', color: 'default', checklistMode: false });
+		// Send the same values — nothing actually changes
+		updateNote(db, OWNER_ID, 'n1', { title: 'Same', content: 'Same' });
+
+		const snapshots = db.select().from(noteVersions).where(eq(noteVersions.noteId, 'n1')).all();
+		expect(snapshots).toHaveLength(0);
+	});
+
+	it('should not create a snapshot when only non-content fields change (pinned, archived)', () => {
+		seedNote('n1', { title: 'Note', pinned: false });
+		updateNote(db, OWNER_ID, 'n1', { pinned: true });
+
+		const snapshots = db.select().from(noteVersions).where(eq(noteVersions.noteId, 'n1')).all();
+		expect(snapshots).toHaveLength(0);
+	});
+
+	it('should extract and sync tags on title/content change', () => {
+		seedNote('n1', { title: 'Original' });
+		const updated = updateNote(db, OWNER_ID, 'n1', { title: 'Now with #newtag' });
+		expect(updated!.tags).toContain('newtag');
+	});
+});
+
+describe('deleteNote', () => {
+	it('should allow owner to permanently delete', () => {
+		seedNote('n1', { title: 'Delete me' });
+		const result = deleteNote(db, OWNER_ID, 'n1');
+		expect(result).toBe(true);
+		expect(getNote(db, OWNER_ID, 'n1')).toBeNull();
+	});
+
+	it('should return false for non-existent or unauthorized', () => {
+		seedNote('n1', { title: 'Private' });
+		expect(deleteNote(db, COLLAB_ID, 'n1')).toBe(false);
+		expect(deleteNote(db, OWNER_ID, 'nonexistent')).toBe(false);
+	});
+});
+
+describe('searchNotes', () => {
+	it('should match title and content', () => {
+		seedNote('n1', { title: 'Meeting notes', content: 'Discuss budget' });
+		seedNote('n2', { title: 'Shopping list', content: 'Buy milk' });
+
+		const results = searchNotes(db, OWNER_ID, 'budget');
+		expect(results).toHaveLength(1);
+		expect(results[0].id).toBe('n1');
+	});
+
+	it('should include shared notes in results', () => {
+		seedNote('shared', { title: 'Shared doc', content: 'Collaboration' });
+		shareNote('shared');
+
+		const results = searchNotes(db, COLLAB_ID, 'Collaboration');
+		expect(results).toHaveLength(1);
+		expect(results[0].id).toBe('shared');
+	});
+
+	it('should return empty array for empty query', () => {
+		seedNote('n1', { title: 'Test' });
+		expect(searchNotes(db, OWNER_ID, '')).toEqual([]);
+	});
+});
+
+describe('reorderNotes', () => {
+	it('should update owner sortOrder in notes table', () => {
+		seedNote('n1', { title: 'A' });
+		seedNote('n2', { title: 'B' });
+		reorderNotes(db, OWNER_ID, [
+			{ id: 'n1', sortOrder: 2 },
+			{ id: 'n2', sortOrder: 1 }
+		]);
+
+		const n1 = getNote(db, OWNER_ID, 'n1');
+		const n2 = getNote(db, OWNER_ID, 'n2');
+		expect(n1!.sortOrder).toBe(2);
+		expect(n2!.sortOrder).toBe(1);
+	});
+
+	it('should update collaborator sortOrder in noteUserState', () => {
+		seedNote('n1', { title: 'Note', sortOrder: 0 });
+		shareNote('n1');
+		reorderNotes(db, COLLAB_ID, [{ id: 'n1', sortOrder: 5 }]);
+
+		// Owner's sortOrder unchanged
+		const ownerView = getNote(db, OWNER_ID, 'n1');
+		expect(ownerView!.sortOrder).toBe(0);
+
+		// Collaborator sees their sortOrder
+		const collabView = getNote(db, COLLAB_ID, 'n1');
+		expect(collabView!.sortOrder).toBe(5);
+	});
+});

src/lib/server/notes-service.ts

@@ -1,16 +1,16 @@
-import { db as defaultDb } from './db/index.js';
-import { notes, noteTags, tags, noteCollaborators, noteUserState } from './db/schema.js';
-import { eq, and, desc, like, or, inArray, sql } from 'drizzle-orm';
+import type { Db } from './db/index.js';
+import { notes, noteTags, tags, noteCollaborators, noteUserState, noteVersions } from './db/schema.js';
+import { eq, and, desc, like, or, inArray, sql, lte } from 'drizzle-orm';
 import { v4 as uuidv4 } from 'uuid';
 import { extractTags } from '$lib/utils/tags.js';
 import { fetchTagsForNotes, syncNoteTags } from './tags.js';
 import { fetchAttachmentsForNotes } from './attachments.js';
 import { fetchCollaboratorsForNotes } from './collaborators.js';
 import { canAccessNote } from './api-utils.js';
+import { createSnapshot } from './versions-service.js';
+import { mergeContent } from '$lib/utils/content-merge.js';
 import type { NoteFilter } from '$lib/types/index.js';
 
-const db = defaultDb;
-
 interface NoteRow {
 	id: string;
 	userId: number;
@@ -28,11 +28,11 @@ interface NoteRow {
 	version: number;
 }
 
-function hydrateNotes(noteRows: NoteRow[], userId: number) {
+function hydrateNotes(db: Db, noteRows: NoteRow[], userId: number) {
 	const noteIds = noteRows.map((n) => n.id);
-	const tagMap = fetchTagsForNotes(noteIds);
-	const attachmentMap = fetchAttachmentsForNotes(noteIds);
-	const collabMap = fetchCollaboratorsForNotes(noteIds);
+	const tagMap = fetchTagsForNotes(db, noteIds);
+	const attachmentMap = fetchAttachmentsForNotes(db, noteIds);
+	const collabMap = fetchCollaboratorsForNotes(db, noteIds);
 
 	return noteRows.map((note) => {
 		const collaborators = collabMap.get(note.id) ?? [];
@@ -52,7 +52,7 @@ function hydrateNotes(noteRows: NoteRow[], userId: number) {
 /**
  * Get shared notes for a user with per-user state overlay.
  */
-function getSharedNotes(userId: number, filter: 'all' | 'archived'): NoteRow[] {
+function getSharedNotes(db: Db, userId: number, filter: 'all' | 'archived'): NoteRow[] {
 	const rows = db
 		.select({
 			id: notes.id,
@@ -90,7 +90,7 @@ function getSharedNotes(userId: number, filter: 'all' | 'archived'): NoteRow[] {
 	return rows as NoteRow[];
 }
 
-export function listNotes(userId: number, filter: NoteFilter = 'all') {
+export function listNotes(db: Db, userId: number, filter: NoteFilter = 'all') {
 	// Owned notes
 	let conditions;
 	switch (filter) {
@@ -114,7 +114,7 @@ export function listNotes(userId: number, filter: NoteFilter = 'all') {
 	// Shared notes (not for trashed filter — collaborators don't see trash)
 	let sharedNotes: NoteRow[] = [];
 	if (filter !== 'trashed') {
-		sharedNotes = getSharedNotes(userId, filter === 'archived' ? 'archived' : 'all');
+		sharedNotes = getSharedNotes(db, userId, filter === 'archived' ? 'archived' : 'all');
 	}
 
 	const combined = [...ownedNotes, ...sharedNotes];
@@ -124,11 +124,11 @@ export function listNotes(userId: number, filter: NoteFilter = 'all') {
 		return b.updatedAt.getTime() - a.updatedAt.getTime();
 	});
 
-	return hydrateNotes(combined, userId);
+	return hydrateNotes(db, combined, userId);
 }
 
-export function getNote(userId: number, id: string) {
-	const { canAccess, isOwner } = canAccessNote(id, userId);
+export function getNote(db: Db, userId: number, id: string) {
+	const { canAccess, isOwner } = canAccessNote(db, id, userId);
 	if (!canAccess) return null;
 
 	const note = db.select().from(notes).where(eq(notes.id, id)).get();
@@ -151,7 +151,7 @@ export function getNote(userId: number, id: string) {
 		};
 	}
 
-	const result = hydrateNotes([effectiveNote], userId);
+	const result = hydrateNotes(db, [effectiveNote], userId);
 	return result[0] ?? null;
 }
 
@@ -165,7 +165,7 @@ export interface CreateNoteInput {
 	sortOrder?: number;
 }
 
-export function createNote(userId: number, input: CreateNoteInput) {
+export function createNote(db: Db, userId: number, input: CreateNoteInput) {
 	const now = new Date();
 	const id = input.id || uuidv4();
 
@@ -192,7 +192,7 @@ export function createNote(userId: number, input: CreateNoteInput) {
 	db.transaction((tx) => {
 		tx.insert(notes).values(newNote).run();
 	});
-	syncNoteTags(id, extractedTags, userId);
+	syncNoteTags(db, id, extractedTags, userId);
 
 	return { ...newNote, tags: extractedTags };
 }
@@ -206,13 +206,14 @@ export interface UpdateNoteInput {
 	trashed?: boolean;
 	checklistMode?: boolean;
 	sortOrder?: number;
+	baseVersion?: number;
 }
 
 /** Per-user fields that go to noteUserState for collaborators */
 const PER_USER_FIELDS = ['pinned', 'archived', 'sortOrder'] as const;
 
-export function updateNote(userId: number, id: string, input: UpdateNoteInput) {
-	const { canAccess, isOwner } = canAccessNote(id, userId);
+export function updateNote(db: Db, userId: number, id: string, input: UpdateNoteInput) {
+	const { canAccess, isOwner } = canAccessNote(db, id, userId);
 	if (!canAccess) return null;
 
 	const existing = db.select().from(notes).where(eq(notes.id, id)).get();
@@ -233,7 +234,33 @@ export function updateNote(userId: number, id: string, input: UpdateNoteInput) {
 	let hasSharedUpdates = false;
 
 	if (input.title !== undefined) { sharedUpdates.title = input.title; hasSharedUpdates = true; }
-	if (input.content !== undefined) { sharedUpdates.content = input.content; hasSharedUpdates = true; }
+	if (input.content !== undefined) {
+		// 3-way merge to preserve concurrent edits from other users
+		if (input.content !== existing.content) {
+			const baseSnapshot = input.baseVersion !== undefined
+				? db.select({ content: noteVersions.content })
+					.from(noteVersions)
+					.where(and(eq(noteVersions.noteId, id), lte(noteVersions.version, input.baseVersion)))
+					.orderBy(desc(noteVersions.version))
+					.limit(1)
+					.get()
+				: db.select({ content: noteVersions.content })
+					.from(noteVersions)
+					.where(eq(noteVersions.noteId, id))
+					.orderBy(desc(noteVersions.version))
+					.limit(1)
+					.get();
+
+			if (baseSnapshot && baseSnapshot.content !== existing.content) {
+				sharedUpdates.content = mergeContent(baseSnapshot.content, input.content, existing.content);
+			} else {
+				sharedUpdates.content = input.content;
+			}
+		} else {
+			sharedUpdates.content = input.content;
+		}
+		hasSharedUpdates = true;
+	}
 	if (input.color !== undefined) { sharedUpdates.color = input.color; hasSharedUpdates = true; }
 	if (input.checklistMode !== undefined) { sharedUpdates.checklistMode = input.checklistMode; hasSharedUpdates = true; }
 
@@ -291,14 +318,31 @@ export function updateNote(userId: number, id: string, input: UpdateNoteInput) {
 		if (updated) {
 			const content = `${updated.title} ${updated.content}`;
 			const extractedTags = extractTags(content);
-			syncNoteTags(id, extractedTags, existing.userId);
+			syncNoteTags(db, id, extractedTags, existing.userId);
 		}
 	}
 
-	return getNote(userId, id);
+	// Create a version snapshot only when at least one content field actually changed
+	const hasActualContentChange =
+		(input.title !== undefined && input.title !== existing.title) ||
+		(input.content !== undefined && input.content !== existing.content) ||
+		(input.color !== undefined && input.color !== existing.color) ||
+		(input.checklistMode !== undefined && input.checklistMode !== existing.checklistMode);
+
+	if (hasActualContentChange) {
+		createSnapshot(db, id, {
+			version: existing.version,
+			title: existing.title,
+			content: existing.content,
+			checklistMode: existing.checklistMode,
+			color: existing.color
+		});
+	}
+
+	return getNote(db, userId, id);
 }
 
-export function deleteNote(userId: number, id: string): boolean {
+export function deleteNote(db: Db, userId: number, id: string): boolean {
 	const existing = db
 		.select()
 		.from(notes)
@@ -312,7 +356,7 @@ export function deleteNote(userId: number, id: string): boolean {
 	return true;
 }
 
-export function searchNotes(userId: number, query: string) {
+export function searchNotes(db: Db, userId: number, query: string) {
 	if (!query) return [];
 
 	const pattern = `%${query}%`;
@@ -386,17 +430,17 @@ export function searchNotes(userId: number, query: string) {
 	}
 
 	const combined = [...ownedResults, ...sharedResults, ...extraNotes] as NoteRow[];
-	return hydrateNotes(combined, userId);
+	return hydrateNotes(db, combined, userId);
 }
 
-export function listAllTags(userId: number) {
+export function listAllTags(db: Db, userId: number) {
 	return db.select().from(tags).where(eq(tags.userId, userId)).all();
 }
 
-export function reorderNotes(userId: number, orders: { id: string; sortOrder: number }[]) {
+export function reorderNotes(db: Db, userId: number, orders: { id: string; sortOrder: number }[]) {
 	const now = new Date();
 	for (const { id, sortOrder } of orders) {
-		const { canAccess, isOwner } = canAccessNote(id, userId);
+		const { canAccess, isOwner } = canAccessNote(db, id, userId);
 		if (!canAccess) continue;
 
 		if (isOwner) {

src/lib/server/preferences.test.ts

@@ -0,0 +1,62 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { createTestDb } from './db/test-helpers.js';
+import type { Db } from './db/index.js';
+import { getPreferences, upsertPreferences } from './preferences.js';
+
+let db: Db;
+const USER_ID = 1;
+
+beforeEach(() => {
+	const testDb = createTestDb({ seedUser: true });
+	db = testDb.db;
+});
+
+describe('getPreferences', () => {
+	it('should return empty object for user with no preferences', () => {
+		const prefs = getPreferences(db, USER_ID);
+		expect(prefs).toEqual({});
+	});
+});
+
+describe('upsertPreferences', () => {
+	it('should insert new preferences', () => {
+		const result = upsertPreferences(db, USER_ID, {
+			defaultNoteMode: 'markdown',
+			hideFooter: 'true'
+		});
+		expect(result).toEqual({
+			defaultNoteMode: 'markdown',
+			hideFooter: 'true'
+		});
+	});
+
+	it('should update existing preferences', () => {
+		upsertPreferences(db, USER_ID, { defaultNoteMode: 'markdown' });
+		const result = upsertPreferences(db, USER_ID, { defaultNoteMode: 'richtext' });
+		expect(result.defaultNoteMode).toBe('richtext');
+	});
+
+	it('should handle partial updates without affecting other keys', () => {
+		upsertPreferences(db, USER_ID, {
+			defaultNoteMode: 'markdown',
+			hideFooter: 'true'
+		});
+		const result = upsertPreferences(db, USER_ID, { hideFooter: 'false' });
+		expect(result).toEqual({
+			defaultNoteMode: 'markdown',
+			hideFooter: 'false'
+		});
+	});
+
+	it('should keep preferences isolated between users', () => {
+		// Create a second user
+		db.run(
+			/* sql */ `INSERT INTO users (email, display_name, role, auth_provider, created_at) VALUES ('user2@test.com', 'User 2', 'user', 'password', ${Date.now()})`
+		);
+		upsertPreferences(db, USER_ID, { defaultNoteMode: 'markdown' });
+		upsertPreferences(db, 2, { defaultNoteMode: 'richtext' });
+
+		expect(getPreferences(db, USER_ID).defaultNoteMode).toBe('markdown');
+		expect(getPreferences(db, 2).defaultNoteMode).toBe('richtext');
+	});
+});

src/lib/server/preferences.ts

@@ -0,0 +1,42 @@
+import type { Db } from './db/index.js';
+import { userPreferences } from './db/schema.js';
+import { eq } from 'drizzle-orm';
+
+/**
+ * Get all preferences for a user as a key-value record.
+ */
+export function getPreferences(db: Db, userId: number): Record<string, string> {
+	const rows = db
+		.select({ key: userPreferences.key, value: userPreferences.value })
+		.from(userPreferences)
+		.where(eq(userPreferences.userId, userId))
+		.all();
+
+	const result: Record<string, string> = {};
+	for (const row of rows) {
+		result[row.key] = row.value;
+	}
+	return result;
+}
+
+/**
+ * Upsert multiple preferences for a user.
+ * Uses INSERT OR REPLACE with the unique (user_id, key) index.
+ */
+export function upsertPreferences(
+	db: Db,
+	userId: number,
+	prefs: Record<string, string>
+): Record<string, string> {
+	const now = new Date();
+	for (const [key, value] of Object.entries(prefs)) {
+		db.insert(userPreferences)
+			.values({ userId, key, value, updatedAt: now })
+			.onConflictDoUpdate({
+				target: [userPreferences.userId, userPreferences.key],
+				set: { value, updatedAt: now }
+			})
+			.run();
+	}
+	return getPreferences(db, userId);
+}

src/lib/server/rate-limit.test.ts

@@ -0,0 +1,100 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { createTestDb } from './db/test-helpers.js';
+import { loginAttempts } from './db/schema.js';
+import type { Db } from './db/index.js';
+import { checkRateLimit, recordLoginAttempt, clearOldAttempts } from './rate-limit.js';
+
+let db: Db;
+
+beforeEach(() => {
+	const testDb = createTestDb();
+	db = testDb.db;
+});
+
+const IP = '192.168.1.1';
+const EMAIL = 'test@test.com';
+
+function addFailedAttempts(count: number, now: Date) {
+	for (let i = 0; i < count; i++) {
+		recordLoginAttempt(db, IP, EMAIL, false, now);
+	}
+}
+
+describe('checkRateLimit', () => {
+	it('should allow first attempt', () => {
+		const result = checkRateLimit(db, IP, EMAIL);
+		expect(result.allowed).toBe(true);
+	});
+
+	it('should allow up to 4 failed attempts', () => {
+		const now = new Date();
+		addFailedAttempts(4, now);
+		const result = checkRateLimit(db, IP, EMAIL, now);
+		expect(result.allowed).toBe(true);
+	});
+
+	it('should block after 5 failed attempts within window', () => {
+		const now = new Date();
+		addFailedAttempts(5, now);
+		const result = checkRateLimit(db, IP, EMAIL, now);
+		expect(result.allowed).toBe(false);
+		expect(result.retryAfter).toBeDefined();
+		expect(result.retryAfter!).toBeGreaterThan(0);
+	});
+
+	it('should return correct retryAfter value', () => {
+		const now = new Date();
+		addFailedAttempts(5, now);
+		const result = checkRateLimit(db, IP, EMAIL, now);
+		// Lockout is 15 minutes (900 seconds)
+		expect(result.retryAfter).toBe(900);
+	});
+
+	it('should allow again after lockout expires', () => {
+		const attemptTime = new Date('2024-01-01T00:00:00Z');
+		addFailedAttempts(5, attemptTime);
+
+		// Check at attempt time — should be blocked
+		const blocked = checkRateLimit(db, IP, EMAIL, attemptTime);
+		expect(blocked.allowed).toBe(false);
+
+		// Check 16 minutes later — should be allowed
+		const later = new Date(attemptTime.getTime() + 16 * 60 * 1000);
+		const allowed = checkRateLimit(db, IP, EMAIL, later);
+		expect(allowed.allowed).toBe(true);
+	});
+});
+
+describe('recordLoginAttempt', () => {
+	it('should insert attempt record', () => {
+		recordLoginAttempt(db, IP, EMAIL, false);
+		const rows = db.select().from(loginAttempts).all();
+		expect(rows).toHaveLength(1);
+		expect(rows[0].ip).toBe(IP);
+		expect(rows[0].email).toBe(EMAIL);
+	});
+
+	it('should record success/failure flag correctly', () => {
+		recordLoginAttempt(db, IP, EMAIL, true);
+		recordLoginAttempt(db, IP, EMAIL, false);
+		const rows = db.select().from(loginAttempts).all();
+		expect(rows[0].success).toBe(true);
+		expect(rows[1].success).toBe(false);
+	});
+});
+
+describe('clearOldAttempts', () => {
+	it('should remove attempts older than 2x lockout', () => {
+		const old = new Date('2024-01-01T00:00:00Z');
+		const recent = new Date('2024-01-01T01:00:00Z');
+		recordLoginAttempt(db, IP, EMAIL, false, old);
+		recordLoginAttempt(db, IP, EMAIL, false, recent);
+
+		// Clear at a time where old is > 2x lockout (30 min) ago but recent is not
+		const clearTime = new Date(old.getTime() + 31 * 60 * 1000);
+		clearOldAttempts(db, clearTime);
+
+		const rows = db.select().from(loginAttempts).all();
+		expect(rows).toHaveLength(1);
+	});
+});

src/lib/server/rate-limit.ts

@@ -1,21 +1,19 @@
-import { db } from './db/index.js';
+import type { Db } from './db/index.js';
 import { loginAttempts } from './db/schema.js';
-import { and, eq, gte, sql } from 'drizzle-orm';
+import { and, eq, gte, lt, sql } from 'drizzle-orm';
 
 const MAX_ATTEMPTS = 5;
 const WINDOW_MS = 60 * 1000; // 1 minute
 const LOCKOUT_MS = 15 * 60 * 1000; // 15 minutes
 
 export function checkRateLimit(
+	db: Db,
 	ip: string,
-	email: string
+	email: string,
+	now?: Date
 ): { allowed: boolean; retryAfter?: number } {
-	// Skip rate limiting in test environment
-	if (process.env.NODE_ENV === 'test' || process.env.PLAYWRIGHT_TEST === '1') {
-		return { allowed: true };
-	}
-
-	const windowStart = new Date(Date.now() - LOCKOUT_MS);
+	const currentTime = now ?? new Date();
+	const windowStart = new Date(currentTime.getTime() - LOCKOUT_MS);
 
 	// Count failed attempts from this IP in the lockout window
 	const result = db
@@ -50,7 +48,7 @@ export function checkRateLimit(
 
 		if (latest) {
 			const retryAfter = Math.ceil(
-				(latest.timestamp.getTime() + LOCKOUT_MS - Date.now()) / 1000
+				(latest.timestamp.getTime() + LOCKOUT_MS - currentTime.getTime()) / 1000
 			);
 			return { allowed: false, retryAfter: Math.max(retryAfter, 1) };
 		}
@@ -60,20 +58,20 @@ export function checkRateLimit(
 	return { allowed: true };
 }
 
-export function recordLoginAttempt(ip: string, email: string, success: boolean): void {
+export function recordLoginAttempt(db: Db, ip: string, email: string, success: boolean, now?: Date): void {
 	db.insert(loginAttempts)
 		.values({
 			ip,
 			email,
 			success,
-			timestamp: new Date()
+			timestamp: now ?? new Date()
 		})
 		.run();
 }
 
-export function clearOldAttempts(): void {
-	const cutoff = new Date(Date.now() - LOCKOUT_MS * 2);
+export function clearOldAttempts(db: Db, now?: Date): void {
+	const cutoff = new Date((now ?? new Date()).getTime() - LOCKOUT_MS * 2);
 	db.delete(loginAttempts)
-		.where(sql`${loginAttempts.timestamp} < ${cutoff}`)
+		.where(lt(loginAttempts.timestamp, cutoff))
 		.run();
 }

src/lib/server/tags.test.ts

@@ -0,0 +1,89 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { createTestDb } from './db/test-helpers.js';
+import { notes, tags, noteTags, users } from './db/schema.js';
+import { eq } from 'drizzle-orm';
+import type { Db } from './db/index.js';
+import { fetchTagsForNotes, syncNoteTags } from './tags.js';
+
+let db: Db;
+const USER_ID = 1;
+
+function seedUser() {
+	db.insert(users)
+		.values({ email: 'test@test.com', displayName: 'Test', role: 'admin', authProvider: 'password', createdAt: new Date() })
+		.run();
+}
+
+function seedNote(id: string) {
+	db.insert(notes)
+		.values({ id, userId: USER_ID, title: '', content: '', createdAt: new Date(), updatedAt: new Date() })
+		.run();
+}
+
+beforeEach(() => {
+	const testDb = createTestDb();
+	db = testDb.db;
+	seedUser();
+});
+
+describe('syncNoteTags', () => {
+	it('should create new tags and associations', () => {
+		seedNote('n1');
+		syncNoteTags(db, 'n1', ['todo', 'urgent'], USER_ID);
+
+		const tagRows = db.select().from(tags).all();
+		expect(tagRows).toHaveLength(2);
+
+		const associations = db.select().from(noteTags).all();
+		expect(associations).toHaveLength(2);
+	});
+
+	it('should remove old associations and add new ones', () => {
+		seedNote('n1');
+		syncNoteTags(db, 'n1', ['old-tag'], USER_ID);
+		syncNoteTags(db, 'n1', ['new-tag'], USER_ID);
+
+		const map = fetchTagsForNotes(db, ['n1']);
+		expect(map.get('n1')).toEqual(['new-tag']);
+	});
+
+	it('should handle empty tag list (removes all)', () => {
+		seedNote('n1');
+		syncNoteTags(db, 'n1', ['tag1', 'tag2'], USER_ID);
+		syncNoteTags(db, 'n1', [], USER_ID);
+
+		const associations = db.select().from(noteTags).where(eq(noteTags.noteId, 'n1')).all();
+		expect(associations).toHaveLength(0);
+	});
+
+	it('should deduplicate existing tags', () => {
+		seedNote('n1');
+		seedNote('n2');
+		syncNoteTags(db, 'n1', ['shared-tag'], USER_ID);
+		syncNoteTags(db, 'n2', ['shared-tag'], USER_ID);
+
+		// Should reuse the same tag row
+		const tagRows = db.select().from(tags).all();
+		expect(tagRows).toHaveLength(1);
+	});
+});
+
+describe('fetchTagsForNotes', () => {
+	it('should return Map of noteId to tag names', () => {
+		seedNote('n1');
+		seedNote('n2');
+		syncNoteTags(db, 'n1', ['alpha', 'beta'], USER_ID);
+		syncNoteTags(db, 'n2', ['gamma'], USER_ID);
+
+		const map = fetchTagsForNotes(db, ['n1', 'n2']);
+		expect(map.get('n1')).toHaveLength(2);
+		expect(map.get('n1')).toContain('alpha');
+		expect(map.get('n1')).toContain('beta');
+		expect(map.get('n2')).toEqual(['gamma']);
+	});
+
+	it('should return empty map for empty noteIds', () => {
+		const map = fetchTagsForNotes(db, []);
+		expect(map.size).toBe(0);
+	});
+});

src/lib/server/tags.ts

@@ -1,4 +1,4 @@
-import { db } from './db/index.js';
+import type { Db } from './db/index.js';
 import { noteTags, tags } from './db/schema.js';
 import { eq, and, inArray } from 'drizzle-orm';
 
@@ -6,7 +6,7 @@ import { eq, and, inArray } from 'drizzle-orm';
  * Batch fetch tags for multiple notes in a single query.
  * Returns a Map of noteId → tag names.
  */
-export function fetchTagsForNotes(noteIds: string[]): Map<string, string[]> {
+export function fetchTagsForNotes(db: Db, noteIds: string[]): Map<string, string[]> {
 	if (noteIds.length === 0) return new Map();
 
 	const rows = db
@@ -32,7 +32,7 @@ export function fetchTagsForNotes(noteIds: string[]): Map<string, string[]> {
  * Sync tags for a note: removes old associations, upserts tags, creates new associations.
  * Should be called within a transaction for atomicity.
  */
-export function syncNoteTags(noteId: string, tagNames: string[], userId: number) {
+export function syncNoteTags(db: Db, noteId: string, tagNames: string[], userId: number) {
 	db.delete(noteTags).where(eq(noteTags.noteId, noteId)).run();
 
 	for (const name of tagNames) {

src/lib/server/versions-service.test.ts

@@ -0,0 +1,207 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import { createTestDb } from './db/test-helpers.js';
+import { users, notes, noteVersions } from './db/schema.js';
+import { eq } from 'drizzle-orm';
+import type { Db } from './db/index.js';
+import { createSnapshot, listVersions, getVersion, snapshotCurrentNote } from './versions-service.js';
+
+let db: Db;
+
+const OWNER_ID = 1;
+const NOTE_ID = 'note-history-test';
+
+function seedUser() {
+	db.insert(users)
+		.values({
+			id: OWNER_ID,
+			email: 'owner@test.com',
+			displayName: 'Owner',
+			role: 'admin',
+			authProvider: 'password',
+			createdAt: new Date()
+		})
+		.run();
+}
+
+function seedNote(overrides: Partial<typeof notes.$inferInsert> = {}) {
+	const now = new Date();
+	db.insert(notes)
+		.values({
+			id: NOTE_ID,
+			userId: OWNER_ID,
+			title: 'Test Note',
+			content: 'Test content',
+			createdAt: now,
+			updatedAt: now,
+			version: 1,
+			...overrides
+		})
+		.run();
+}
+
+beforeEach(() => {
+	({ db } = createTestDb());
+	seedUser();
+});
+
+describe('createSnapshot', () => {
+	it('should store a snapshot for a note', () => {
+		seedNote();
+		createSnapshot(db, NOTE_ID, {
+			version: 1,
+			title: 'Test Note',
+			content: 'Test content',
+			checklistMode: false,
+			color: 'default'
+		});
+
+		const rows = db.select().from(noteVersions).where(eq(noteVersions.noteId, NOTE_ID)).all();
+		expect(rows).toHaveLength(1);
+		expect(rows[0].version).toBe(1);
+		expect(rows[0].title).toBe('Test Note');
+		expect(rows[0].content).toBe('Test content');
+		expect(rows[0].checklistMode).toBe(false);
+		expect(rows[0].color).toBe('default');
+	});
+
+	it('should not duplicate snapshots for the same version (onConflictDoNothing)', () => {
+		seedNote();
+		createSnapshot(db, NOTE_ID, { version: 1, title: 'A', content: '', checklistMode: false, color: 'default' });
+		createSnapshot(db, NOTE_ID, { version: 1, title: 'B', content: '', checklistMode: false, color: 'default' });
+
+		const rows = db.select().from(noteVersions).where(eq(noteVersions.noteId, NOTE_ID)).all();
+		expect(rows).toHaveLength(1);
+		expect(rows[0].title).toBe('A'); // first one wins
+	});
+
+	it('should prune to at most 50 snapshots', () => {
+		seedNote();
+		for (let i = 1; i <= 55; i++) {
+			createSnapshot(db, NOTE_ID, {
+				version: i,
+				title: `Version ${i}`,
+				content: '',
+				checklistMode: false,
+				color: 'default'
+			});
+		}
+
+		const rows = db.select().from(noteVersions).where(eq(noteVersions.noteId, NOTE_ID)).all();
+		expect(rows).toHaveLength(50);
+		// Oldest (v1–v5) should be pruned; newest (v6–v55) should remain
+		const versions = rows.map((r) => r.version);
+		expect(Math.min(...versions)).toBe(6);
+		expect(Math.max(...versions)).toBe(55);
+	});
+});
+
+describe('listVersions', () => {
+	it('should return an empty array when there are no versions', () => {
+		seedNote();
+		expect(listVersions(db, NOTE_ID)).toEqual([]);
+	});
+
+	it('should return summaries sorted newest first', () => {
+		seedNote();
+		createSnapshot(db, NOTE_ID, { version: 1, title: 'First', content: 'Hello world', checklistMode: false, color: 'default' });
+		createSnapshot(db, NOTE_ID, { version: 2, title: 'Second', content: 'Updated content here', checklistMode: false, color: 'mint' });
+
+		const summaries = listVersions(db, NOTE_ID);
+		expect(summaries).toHaveLength(2);
+		expect(summaries[0].version).toBe(2); // newest first
+		expect(summaries[1].version).toBe(1);
+	});
+
+	it('should truncate contentPreview to 80 characters', () => {
+		seedNote();
+		const longContent = 'a'.repeat(200);
+		createSnapshot(db, NOTE_ID, { version: 1, title: 'T', content: longContent, checklistMode: false, color: 'default' });
+
+		const summaries = listVersions(db, NOTE_ID);
+		expect(summaries[0].contentPreview).toHaveLength(80);
+	});
+
+	it('should include correct summary fields', () => {
+		seedNote();
+		createSnapshot(db, NOTE_ID, { version: 3, title: 'My Title', content: 'My content', checklistMode: false, color: 'coral' });
+
+		const summaries = listVersions(db, NOTE_ID);
+		expect(summaries[0]).toMatchObject({
+			noteId: NOTE_ID,
+			version: 3,
+			title: 'My Title',
+			contentPreview: 'My content'
+		});
+		expect(summaries[0].id).toBeTruthy();
+		expect(summaries[0].createdAt).toBeInstanceOf(Date);
+	});
+});
+
+describe('getVersion', () => {
+	it('should return null for a non-existent version', () => {
+		seedNote();
+		expect(getVersion(db, NOTE_ID, 'non-existent-id')).toBeNull();
+	});
+
+	it('should return the full version content', () => {
+		seedNote();
+		createSnapshot(db, NOTE_ID, {
+			version: 2,
+			title: 'Full Title',
+			content: '# Heading\n\nSome content',
+			checklistMode: true,
+			color: 'mint'
+		});
+
+		const summaries = listVersions(db, NOTE_ID);
+		const versionId = summaries[0].id;
+
+		const version = getVersion(db, NOTE_ID, versionId);
+		expect(version).not.toBeNull();
+		expect(version!.version).toBe(2);
+		expect(version!.title).toBe('Full Title');
+		expect(version!.content).toBe('# Heading\n\nSome content');
+		expect(version!.checklistMode).toBe(true);
+		expect(version!.color).toBe('mint');
+	});
+
+	it('should not return a version from a different note', () => {
+		const OTHER_NOTE_ID = 'other-note';
+		seedNote();
+		db.insert(notes).values({
+			id: OTHER_NOTE_ID,
+			userId: OWNER_ID,
+			title: 'Other',
+			content: '',
+			createdAt: new Date(),
+			updatedAt: new Date(),
+			version: 1
+		}).run();
+
+		createSnapshot(db, OTHER_NOTE_ID, { version: 1, title: 'Other', content: 'Other content', checklistMode: false, color: 'default' });
+		const summaries = listVersions(db, OTHER_NOTE_ID);
+		const versionId = summaries[0].id;
+
+		// Requesting version from wrong noteId returns null
+		expect(getVersion(db, NOTE_ID, versionId)).toBeNull();
+	});
+});
+
+describe('snapshotCurrentNote', () => {
+	it('should return false for a non-existent note', () => {
+		expect(snapshotCurrentNote(db, 'non-existent')).toBe(false);
+	});
+
+	it('should snapshot the current note state', () => {
+		seedNote({ title: 'Current Title', content: 'Current content', version: 5 });
+
+		const result = snapshotCurrentNote(db, NOTE_ID);
+		expect(result).toBe(true);
+
+		const rows = db.select().from(noteVersions).where(eq(noteVersions.noteId, NOTE_ID)).all();
+		expect(rows).toHaveLength(1);
+		expect(rows[0].version).toBe(5);
+		expect(rows[0].title).toBe('Current Title');
+		expect(rows[0].content).toBe('Current content');
+	});
+});

src/lib/server/versions-service.ts

@@ -0,0 +1,118 @@
+import type { Db } from './db/index.js';
+import { noteVersions, notes } from './db/schema.js';
+import { eq, and, desc } from 'drizzle-orm';
+import { v4 as uuidv4 } from 'uuid';
+import type { NoteVersion, NoteVersionSummary, NoteColor } from '$lib/types/index.js';
+
+const MAX_VERSIONS_PER_NOTE = 50;
+const CONTENT_PREVIEW_LENGTH = 80;
+
+/**
+ * Create a snapshot of a note's current state.
+ * Only called when content actually changed. Prunes snapshots beyond MAX_VERSIONS_PER_NOTE.
+ */
+export function createSnapshot(
+db: Db,
+noteId: string,
+snapshot: {
+version: number;
+title: string;
+content: string;
+checklistMode: boolean;
+color: string;
+}
+): void {
+const now = new Date();
+
+db.insert(noteVersions)
+.values({
+id: uuidv4(),
+noteId,
+version: snapshot.version,
+title: snapshot.title,
+content: snapshot.content,
+checklistMode: snapshot.checklistMode,
+color: snapshot.color,
+createdAt: now
+})
+.onConflictDoNothing()
+.run();
+
+// Prune: keep only the most recent MAX_VERSIONS_PER_NOTE snapshots
+const allVersions = db
+.select({ id: noteVersions.id })
+.from(noteVersions)
+.where(eq(noteVersions.noteId, noteId))
+.orderBy(desc(noteVersions.version))
+.all();
+
+if (allVersions.length > MAX_VERSIONS_PER_NOTE) {
+const toDelete = allVersions.slice(MAX_VERSIONS_PER_NOTE).map((v) => v.id);
+for (const id of toDelete) {
+db.delete(noteVersions).where(eq(noteVersions.id, id)).run();
+}
+}
+}
+
+/**
+ * List version summaries for a note, newest first.
+ */
+export function listVersions(db: Db, noteId: string): NoteVersionSummary[] {
+const rows = db
+.select()
+.from(noteVersions)
+.where(eq(noteVersions.noteId, noteId))
+.orderBy(desc(noteVersions.version))
+.all();
+
+return rows.map((row) => ({
+id: row.id,
+noteId: row.noteId,
+version: row.version,
+title: row.title,
+contentPreview: row.content.slice(0, CONTENT_PREVIEW_LENGTH),
+createdAt: row.createdAt
+}));
+}
+
+/**
+ * Get the full content of a specific version.
+ */
+export function getVersion(db: Db, noteId: string, versionId: string): NoteVersion | null {
+const row = db
+.select()
+.from(noteVersions)
+.where(and(eq(noteVersions.id, versionId), eq(noteVersions.noteId, noteId)))
+.get();
+
+if (!row) return null;
+
+return {
+id: row.id,
+noteId: row.noteId,
+version: row.version,
+title: row.title,
+content: row.content,
+checklistMode: row.checklistMode,
+color: row.color as NoteColor,
+createdAt: row.createdAt
+};
+}
+
+/**
+ * Snapshot the current state of a note (used before a restore).
+ */
+export function snapshotCurrentNote(db: Db, noteId: string): boolean {
+const currentNote = db.select().from(notes).where(eq(notes.id, noteId)).get();
+if (!currentNote) return false;
+
+createSnapshot(db, noteId, {
+version: currentNote.version,
+title: currentNote.title,
+content: currentNote.content,
+checklistMode: currentNote.checklistMode,
+color: currentNote.color
+});
+
+return true;
+}

src/lib/stores/notes.ts

@@ -142,11 +142,19 @@ export async function createNote(note: NoteCreate): Promise<Note | null> {
 }
 
 export async function updateNote(id: string, updates: NoteUpdate): Promise<Note | null> {
+	// Read current version for 3-way merge base on the server
+	let baseVersion: number | undefined;
+	notes.update((list) => {
+		const current = list.find((n) => n.id === id);
+		if (current) baseVersion = current.version;
+		return list;
+	});
+
 	try {
 		const res = await fetch(`/api/notes/${id}`, {
 			method: 'PATCH',
 			headers: { 'Content-Type': 'application/json' },
-			body: JSON.stringify(updates)
+			body: JSON.stringify({ ...updates, baseVersion })
 		});
 		if (res.ok) {
 			const updated: Note = await res.json();
@@ -173,7 +181,7 @@ export async function updateNote(id: string, updates: NoteUpdate): Promise<Note
 			);
 			if (optimistic) {
 				await putNote(optimistic);
-				await addToSyncQueue({ noteId: id, operation: 'update', data: updates, timestamp: Date.now() });
+				await addToSyncQueue({ noteId: id, operation: 'update', data: updates, timestamp: Date.now(), baseVersion });
 				showToast('Saved offline — will sync when reconnected', 'info');
 			}
 			return optimistic;

src/lib/stores/preferences.svelte.ts

@@ -0,0 +1,114 @@
+import { browser } from '$app/environment';
+import { DEFAULT_PREFERENCES, BOOLEAN_PREF_KEYS } from '$lib/types/preferences.js';
+import type { UserPreferences } from '$lib/types/preferences.js';
+
+const STORAGE_KEY = 'crumbs-preferences';
+
+let preferences = $state<UserPreferences>({ ...DEFAULT_PREFERENCES });
+
+function loadFromLocalStorage(): UserPreferences {
+	if (!browser) return { ...DEFAULT_PREFERENCES };
+	try {
+		const raw = localStorage.getItem(STORAGE_KEY);
+		if (raw) {
+			const parsed = JSON.parse(raw);
+			return { ...DEFAULT_PREFERENCES, ...parsed };
+		}
+	} catch {
+		// Corrupted localStorage — use defaults
+	}
+	return { ...DEFAULT_PREFERENCES };
+}
+
+function saveToLocalStorage(prefs: UserPreferences) {
+	if (!browser) return;
+	try {
+		localStorage.setItem(STORAGE_KEY, JSON.stringify(prefs));
+	} catch {
+		// localStorage full or unavailable
+	}
+}
+
+/** Convert server key-value record to typed UserPreferences */
+function fromServerRecord(record: Record<string, string>): Partial<UserPreferences> {
+	const result: Partial<UserPreferences> = {};
+	for (const [key, value] of Object.entries(record)) {
+		if (key in DEFAULT_PREFERENCES) {
+			const k = key as keyof UserPreferences;
+			if (BOOLEAN_PREF_KEYS.has(k)) {
+				(result as Record<string, unknown>)[k] = value === 'true';
+			} else {
+				(result as Record<string, unknown>)[k] = value;
+			}
+		}
+	}
+	return result;
+}
+
+/** Convert UserPreferences to server key-value record */
+function toServerRecord(prefs: Partial<UserPreferences>): Record<string, string> {
+	const result: Record<string, string> = {};
+	for (const [key, value] of Object.entries(prefs)) {
+		result[key] = String(value);
+	}
+	return result;
+}
+
+/**
+ * Initialize preferences — load from localStorage, then sync from server.
+ */
+export function initPreferences() {
+	preferences = loadFromLocalStorage();
+	syncPreferencesFromServer();
+}
+
+/**
+ * Get the reactive preferences object.
+ */
+export function getPreferences(): UserPreferences {
+	return preferences;
+}
+
+/**
+ * Update a single preference. Saves to localStorage and pushes to server.
+ */
+export function updatePreference<K extends keyof UserPreferences>(
+	key: K,
+	value: UserPreferences[K]
+) {
+	preferences = { ...preferences, [key]: value };
+	saveToLocalStorage(preferences);
+	pushToServer({ [key]: value });
+}
+
+/**
+ * Pull preferences from server and merge into local state.
+ */
+export async function syncPreferencesFromServer() {
+	if (!browser) return;
+	try {
+		const res = await fetch('/api/preferences');
+		if (res.ok) {
+			const serverPrefs: Record<string, string> = await res.json();
+			const parsed = fromServerRecord(serverPrefs);
+			preferences = { ...DEFAULT_PREFERENCES, ...parsed };
+			saveToLocalStorage(preferences);
+		}
+	} catch {
+		// Offline — local state stands
+	}
+}
+
+/** Push preference changes to server */
+async function pushToServer(partial: Partial<UserPreferences>) {
+	if (!browser) return;
+	try {
+		await fetch('/api/preferences', {
+			method: 'PUT',
+			headers: { 'Content-Type': 'application/json' },
+			body: JSON.stringify(toServerRecord(partial))
+		});
+	} catch {
+		// Offline — localStorage already updated
+	}
+}

src/lib/stores/preferences.test.ts

@@ -0,0 +1,26 @@
+import { describe, it, expect } from 'vitest';
+import { DEFAULT_PREFERENCES, BOOLEAN_PREF_KEYS } from '$lib/types/preferences.js';
+
+describe('preferences defaults', () => {
+	it('should have correct default values', () => {
+		expect(DEFAULT_PREFERENCES).toEqual({
+			defaultNoteMode: 'richtext',
+			defaultNoteColor: 'default',
+			hideFooter: false,
+			sidebarDefaultState: 'open',
+			notifyOnShare: true,
+			notifyOnCollabRemoved: true,
+			notifyOnNoteDeleted: true
+		});
+	});
+
+	it('should identify boolean preference keys', () => {
+		expect(BOOLEAN_PREF_KEYS.has('hideFooter')).toBe(true);
+		expect(BOOLEAN_PREF_KEYS.has('notifyOnShare')).toBe(true);
+		expect(BOOLEAN_PREF_KEYS.has('notifyOnCollabRemoved')).toBe(true);
+		expect(BOOLEAN_PREF_KEYS.has('notifyOnNoteDeleted')).toBe(true);
+		expect(BOOLEAN_PREF_KEYS.has('defaultNoteMode')).toBe(false);
+		expect(BOOLEAN_PREF_KEYS.has('defaultNoteColor')).toBe(false);
+		expect(BOOLEAN_PREF_KEYS.has('sidebarDefaultState')).toBe(false);
+	});
+});

src/lib/sync/client.ts

@@ -100,10 +100,26 @@ async function pullChanges(): Promise<Note[]> {
 			const localNotes = await getAllNotes();
 			const localMap = new Map(localNotes.map((n) => [n.id, n]));
 
+			// Build pending-fields map from sync queue to protect unpushed local changes
+			let pendingFieldsMap = new Map<string, Set<string>>();
+			try {
+				const queue = await getSyncQueue();
+				for (const item of queue) {
+					if (item.data) {
+						const fields = pendingFieldsMap.get(item.noteId) || new Set<string>();
+						Object.keys(item.data).forEach((k) => fields.add(k));
+						pendingFieldsMap.set(item.noteId, fields);
+					}
+				}
+			} catch {
+				// Queue unavailable — merge without protection
+			}
+
 			for (const remote of remoteNotes) {
 				const local = localMap.get(remote.id);
 				if (local) {
-					const merged = mergeNotes(local, remote);
+					const pendingFields = pendingFieldsMap.get(remote.id);
+					const merged = mergeNotes(local, remote, pendingFields);
 					await putNote(merged);
 				} else {
 					await putNote(remote);

src/lib/sync/crdt.ts

@@ -1,29 +1,39 @@
 import type { Note } from '$lib/types/index.js';
 
+/** Fields that can be individually merged between local and remote notes */
+const MUTABLE_FIELDS = ['title', 'content', 'color', 'pinned', 'archived', 'trashed', 'checklistMode', 'sortOrder'] as const;
+
 /**
- * Last-Write-Wins (LWW) merge strategy per field.
- * For a single-user app with multiple devices, this is sufficient.
- * Each field is resolved by comparing updatedAt timestamps.
+ * Last-Write-Wins (LWW) merge strategy with pending-field protection.
+ *
+ * When remote is newer, takes remote values for all fields EXCEPT those
+ * listed in `pendingFields` — these represent locally-queued changes that
+ * haven't been pushed yet and must be preserved.
  */
-export function mergeNotes(local: Note, remote: Note): Note {
-	// If remote is newer overall, take remote
+export function mergeNotes(local: Note, remote: Note, pendingFields?: Set<string>): Note {
 	const localTime = new Date(local.updatedAt).getTime();
 	const remoteTime = new Date(remote.updatedAt).getTime();
 
-	if (remoteTime > localTime) {
-		return { ...remote };
-	}
+	const remoteWins = remoteTime > localTime ||
+		(remoteTime === localTime && remote.version > local.version);
 
-	if (localTime > remoteTime) {
+	if (!remoteWins) {
 		return { ...local };
 	}
 
-	// Same timestamp - prefer higher version number
-	if (remote.version > local.version) {
+	// Remote wins — take remote as base, but preserve pending local fields
+	if (!pendingFields || pendingFields.size === 0) {
 		return { ...remote };
 	}
 
-	return { ...local };
+	const merged = { ...remote };
+	for (const field of MUTABLE_FIELDS) {
+		if (pendingFields.has(field)) {
+			(merged as unknown as Record<string, unknown>)[field] = (local as unknown as Record<string, unknown>)[field];
+		}
+	}
+
+	return merged;
 }
 
 /**

src/lib/sync/idb.ts

@@ -48,6 +48,7 @@ export interface SyncQueueItem {
 	operation: 'create' | 'update' | 'delete';
 	data?: Partial<Note>;
 	timestamp: number;
+	baseVersion?: number;
 }
 
 let dbPromise: Promise<IDBPDatabase<CrumbsDB>> | null = null;

src/lib/sync/server.test.ts

@@ -51,7 +51,7 @@ describe('getChangesSince — shared notes', () => {
 
 		seedSharedNote('n1', { updatedAt: t2, createdAt: t1 });
 
-		const changes = await getChangesSince(t1.getTime(), COLLAB_ID, db);
+		const changes = await getChangesSince(db, t1.getTime(), COLLAB_ID);
 
 		expect(changes).toHaveLength(1);
 		expect(changes[0].id).toBe('n1');
@@ -65,7 +65,7 @@ describe('getChangesSince — shared notes', () => {
 
 		seedSharedNote('n1', { updatedAt: t1, createdAt: t1 });
 
-		const changes = await getChangesSince(t2.getTime(), COLLAB_ID, db);
+		const changes = await getChangesSince(db, t2.getTime(), COLLAB_ID);
 
 		expect(changes).toHaveLength(0);
 	});
@@ -86,7 +86,7 @@ describe('getChangesSince — shared notes', () => {
 			sortOrder: 5
 		}).run();
 
-		const changes = await getChangesSince(t1.getTime(), COLLAB_ID, db);
+		const changes = await getChangesSince(db, t1.getTime(), COLLAB_ID);
 
 		expect(changes).toHaveLength(1);
 		// Should reflect the collaborator's per-user state, not the owner's
@@ -102,7 +102,7 @@ describe('getChangesSince — shared notes', () => {
 		// Owner has pinned=true, sortOrder=10
 		seedSharedNote('n1', { updatedAt: t2, createdAt: t1, pinned: true, sortOrder: 10 });
 
-		const changes = await getChangesSince(t1.getTime(), COLLAB_ID, db);
+		const changes = await getChangesSince(db, t1.getTime(), COLLAB_ID);
 
 		expect(changes).toHaveLength(1);
 		// Without noteUserState, collaborator should get defaults (false/0), not owner's values
@@ -116,7 +116,7 @@ describe('getChangesSince — shared notes', () => {
 
 		seedSharedNote('n1', { updatedAt: t2, createdAt: t1, trashed: true });
 
-		const changes = await getChangesSince(t1.getTime(), COLLAB_ID, db);
+		const changes = await getChangesSince(db, t1.getTime(), COLLAB_ID);
 
 		expect(changes).toHaveLength(0);
 	});
@@ -133,7 +133,7 @@ describe('getChangesSince — shared notes', () => {
 			.run();
 
 		// Collaborator syncs since t1
-		const changes = await getChangesSince(t1.getTime(), COLLAB_ID, db);
+		const changes = await getChangesSince(db, t1.getTime(), COLLAB_ID);
 
 		expect(changes).toHaveLength(1);
 		expect(changes[0].content).toBe('Updated by owner');
@@ -157,7 +157,7 @@ describe('getChangesSince — shared notes', () => {
 		// Note shared with COLLAB_ID (owned by OWNER_ID)
 		seedSharedNote('shared-with-collab', { updatedAt: t2, createdAt: t1 });
 
-		const changes = await getChangesSince(t1.getTime(), COLLAB_ID, db);
+		const changes = await getChangesSince(db, t1.getTime(), COLLAB_ID);
 
 		expect(changes).toHaveLength(2);
 		const ids = changes.map((c) => c.id).sort();
@@ -171,12 +171,12 @@ describe('processSyncPush — shared notes', () => {
 		seedSharedNote('n1', { updatedAt: t1, createdAt: t1 });
 
 		const t2 = t1.getTime() + 1000;
-		await processSyncPush([{
+		await processSyncPush(db, [{
 			noteId: 'n1',
 			operation: 'update',
 			timestamp: t2,
 			data: { title: 'Updated by collab', content: 'New content' }
-		}], COLLAB_ID, db);
+		}], COLLAB_ID);
 
 		const note = db.select().from(notes).where(eq(notes.id, 'n1')).get()!;
 		expect(note.title).toBe('Updated by collab');
@@ -189,12 +189,12 @@ describe('processSyncPush — shared notes', () => {
 		seedSharedNote('n1', { updatedAt: t1, createdAt: t1 });
 
 		const t2 = t1.getTime() + 1000;
-		await processSyncPush([{
+		await processSyncPush(db, [{
 			noteId: 'n1',
 			operation: 'update',
 			timestamp: t2,
 			data: { pinned: true, sortOrder: 3 }
-		}], COLLAB_ID, db);
+		}], COLLAB_ID);
 
 		// Per-user fields should be in noteUserState, not in notes
 		const note = db.select().from(notes).where(eq(notes.id, 'n1')).get()!;
@@ -213,32 +213,80 @@ describe('processSyncPush — shared notes', () => {
 		seedSharedNote('n1', { updatedAt: t1, createdAt: t1 });
 
 		const t2 = t1.getTime() + 1000;
-		await processSyncPush([{
+		await processSyncPush(db, [{
 			noteId: 'n1',
 			operation: 'update',
 			timestamp: t2,
 			data: { trashed: true }
-		}], COLLAB_ID, db);
+		}], COLLAB_ID);
 
 		const note = db.select().from(notes).where(eq(notes.id, 'n1')).get()!;
 		expect(note.trashed).toBe(false);
 	});
 
-	it('should reject changes with older timestamp than server note', async () => {
+	it('should apply field changes even when timestamp is older (no timestamp gate)', async () => {
 		const t2 = new Date('2024-01-02T00:00:00Z');
 		seedSharedNote('n1', { updatedAt: t2, createdAt: new Date('2024-01-01T00:00:00Z') });
 
-		// Collaborator's change has a timestamp BEFORE the server's updatedAt
+		// Collaborator's change has a timestamp BEFORE the server's updatedAt.
+		// With field-level sync, the title change should still be applied because
+		// the sync data only contains fields the client explicitly modified.
 		const t1 = new Date('2024-01-01T12:00:00Z').getTime();
-		await processSyncPush([{
+		await processSyncPush(db, [{
 			noteId: 'n1',
 			operation: 'update',
 			timestamp: t1,
-			data: { title: 'Stale edit' }
-		}], COLLAB_ID, db);
+			data: { title: 'Offline edit' }
+		}], COLLAB_ID);
 
 		const note = db.select().from(notes).where(eq(notes.id, 'n1')).get()!;
-		expect(note.title).toBe('Shared Note'); // Unchanged
+		expect(note.title).toBe('Offline edit');
+		// updatedAt should be max of change timestamp and server timestamp
+		expect(note.updatedAt.getTime()).toBe(t2.getTime());
+	});
+
+	it('should merge checklist content when collaborator pushes concurrent content change', async () => {
+		const t1 = new Date('2024-01-01T00:00:00Z');
+		seedSharedNote('n1', {
+			updatedAt: t1,
+			createdAt: t1,
+			content: '- [ ] Milk\n- [ ] Bread',
+			checklistMode: true
+		});
+
+		// Simulate owner editing content on server (checking Bread)
+		const t2 = new Date('2024-01-01T12:00:00Z');
+		db.update(notes)
+			.set({ content: '- [ ] Milk\n- [x] Bread', updatedAt: t2, version: 2 })
+			.where(eq(notes.id, 'n1'))
+			.run();
+
+		// Create a version snapshot for the base content (version 1)
+		const { noteVersions } = await import('../server/db/schema.js');
+		db.insert(noteVersions).values({
+			id: 'snap-1',
+			noteId: 'n1',
+			version: 1,
+			title: 'Shared Note',
+			content: '- [ ] Milk\n- [ ] Bread',
+			checklistMode: true,
+			color: 'default',
+			createdAt: t1
+		}).run();
+
+		// Collaborator was offline since version 1, checked Milk
+		const t3 = new Date('2024-01-01T13:00:00Z').getTime();
+		await processSyncPush(db, [{
+			noteId: 'n1',
+			operation: 'update',
+			timestamp: t3,
+			data: { content: '- [x] Milk\n- [ ] Bread' },
+			baseVersion: 1
+		}], COLLAB_ID);
+
+		const note = db.select().from(notes).where(eq(notes.id, 'n1')).get()!;
+		// Both changes should be merged: Milk checked by collab, Bread checked by owner
+		expect(note.content).toBe('- [x] Milk\n- [x] Bread');
 	});
 
 	it('should not allow non-collaborator to update the note', async () => {
@@ -263,12 +311,12 @@ describe('processSyncPush — shared notes', () => {
 		}).run();
 
 		const t2 = t1.getTime() + 1000;
-		await processSyncPush([{
+		await processSyncPush(db, [{
 			noteId: 'n1',
 			operation: 'update',
 			timestamp: t2,
 			data: { title: 'Hacked' }
-		}], 3, db); // User 3 is not owner or collaborator
+		}], 3); // User 3 is not owner or collaborator
 
 		const note = db.select().from(notes).where(eq(notes.id, 'n1')).get()!;
 		expect(note.title).toBe('Private'); // Unchanged
@@ -279,12 +327,12 @@ describe('processSyncPush — shared notes', () => {
 		seedSharedNote('n1', { updatedAt: t1, createdAt: t1 });
 
 		const t2 = t1.getTime() + 1000;
-		await processSyncPush([{
+		await processSyncPush(db, [{
 			noteId: 'n1',
 			operation: 'update',
 			timestamp: t2,
 			data: { title: 'Updated' }
-		}], COLLAB_ID, db);
+		}], COLLAB_ID);
 
 		const logs = db.select().from(syncLog).where(eq(syncLog.noteId, 'n1')).all();
 		expect(logs).toHaveLength(1);

src/lib/sync/server.ts

@@ -1,18 +1,41 @@
-import { db as defaultDb } from '$lib/server/db/index.js';
-import { notes, noteCollaborators, noteUserState, syncLog } from '$lib/server/db/schema.js';
-import { eq, gt, and, or, sql } from 'drizzle-orm';
+import type { Db } from '$lib/server/db/index.js';
+import { notes, noteCollaborators, noteUserState, noteVersions, syncLog } from '$lib/server/db/schema.js';
+import { eq, gt, and, or, sql, desc, lte } from 'drizzle-orm';
 import { extractTags } from '$lib/utils/tags.js';
 import { syncNoteTags } from '$lib/server/tags.js';
 import { canAccessNote } from '$lib/server/api-utils.js';
+import { mergeContent } from '$lib/utils/content-merge.js';
 import type { SyncQueueItem } from './idb.js';
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-type AnyDb = import('drizzle-orm/better-sqlite3').BetterSQLite3Database<any>;
+
+/**
+ * Find the base content for 3-way merge from version snapshots.
+ * Returns the content from the snapshot at or before the given version,
+ * or the current note content if no snapshot is found.
+ */
+function getBaseContent(tx: Parameters<Parameters<Db['transaction']>[0]>[0], noteId: string, baseVersion?: number): string | null {
+	if (baseVersion !== undefined) {
+		const snapshot = tx.select({ content: noteVersions.content })
+			.from(noteVersions)
+			.where(and(eq(noteVersions.noteId, noteId), lte(noteVersions.version, baseVersion)))
+			.orderBy(desc(noteVersions.version))
+			.limit(1)
+			.get();
+		if (snapshot) return snapshot.content;
+	}
+	// Fallback: get the most recent snapshot before the current version
+	const latest = tx.select({ content: noteVersions.content })
+		.from(noteVersions)
+		.where(eq(noteVersions.noteId, noteId))
+		.orderBy(desc(noteVersions.version))
+		.limit(1)
+		.get();
+	return latest?.content ?? null;
+}
 
 /**
  * Process incoming sync changes from client.
  */
-export async function processSyncPush(changes: SyncQueueItem[], userId: number, injectedDb?: AnyDb): Promise<void> {
-	const db = injectedDb ?? defaultDb;
+export async function processSyncPush(db: Db, changes: SyncQueueItem[], userId: number): Promise<void> {
 	const noteIdsToSyncTags: string[] = [];
 
 	db.transaction((tx) => {
@@ -35,59 +58,70 @@ export async function processSyncPush(changes: SyncQueueItem[], userId: number,
 
 						if (!isOwner && !isCollaborator) continue;
 
-						if (change.timestamp > note.updatedAt.getTime()) {
-							// Shared fields: title, content, color, checklistMode
-							const sharedData: Record<string, unknown> = {
-								updatedAt: new Date(change.timestamp),
-								version: note.version + 1
-							};
-							if (change.data.title !== undefined) sharedData.title = change.data.title;
-							if (change.data.content !== undefined) sharedData.content = change.data.content;
-							if (change.data.color !== undefined) sharedData.color = change.data.color;
-							if (change.data.checklistMode !== undefined) sharedData.checklistMode = change.data.checklistMode;
+						// Apply field-level updates unconditionally (no timestamp gate).
+						// Each sync change only contains the fields the client explicitly modified,
+						// so applying them won't overwrite other users' changes to different fields.
+						const sharedData: Record<string, unknown> = {
+							updatedAt: new Date(Math.max(change.timestamp, note.updatedAt.getTime())),
+							version: note.version + 1
+						};
+						if (change.data.title !== undefined) sharedData.title = change.data.title;
+						if (change.data.color !== undefined) sharedData.color = change.data.color;
+						if (change.data.checklistMode !== undefined) sharedData.checklistMode = change.data.checklistMode;
 
-							if (isOwner) {
-								// Owner: per-user fields go to notes table
-								if (change.data.pinned !== undefined) sharedData.pinned = change.data.pinned;
-								if (change.data.archived !== undefined) sharedData.archived = change.data.archived;
-								if (change.data.trashed !== undefined) {
-									sharedData.trashed = change.data.trashed;
-									sharedData.trashedAt = change.data.trashed ? new Date(change.timestamp) : null;
-								}
-								if (change.data.sortOrder !== undefined) sharedData.sortOrder = change.data.sortOrder;
+						// Content: 3-way merge to preserve concurrent edits from other users
+						if (change.data.content !== undefined && change.data.content !== note.content) {
+							const baseContent = getBaseContent(tx, change.noteId, change.baseVersion);
+							if (baseContent !== null && baseContent !== note.content) {
+								// 3-way merge: base, incoming (local), server current (remote)
+								sharedData.content = mergeContent(baseContent, change.data.content, note.content);
+							} else {
+								// No base or base matches server — take incoming content
+								sharedData.content = change.data.content;
 							}
+						}
 
-							tx.update(notes)
-								.set(sharedData)
-								.where(eq(notes.id, change.noteId))
-								.run();
+						if (isOwner) {
+							// Owner: per-user fields go to notes table
+							if (change.data.pinned !== undefined) sharedData.pinned = change.data.pinned;
+							if (change.data.archived !== undefined) sharedData.archived = change.data.archived;
+							if (change.data.trashed !== undefined) {
+								sharedData.trashed = change.data.trashed;
+								sharedData.trashedAt = change.data.trashed ? new Date(change.timestamp) : null;
+							}
+							if (change.data.sortOrder !== undefined) sharedData.sortOrder = change.data.sortOrder;
+						}
 
-							// Collaborator: per-user fields go to noteUserState
-							if (!isOwner) {
-								const hasPerUser = change.data.pinned !== undefined ||
-									change.data.archived !== undefined ||
-									change.data.sortOrder !== undefined;
-								if (hasPerUser) {
-									const existing = tx.select().from(noteUserState)
+						tx.update(notes)
+							.set(sharedData)
+							.where(eq(notes.id, change.noteId))
+							.run();
+
+						// Collaborator: per-user fields go to noteUserState
+						if (!isOwner) {
+							const hasPerUser = change.data.pinned !== undefined ||
+								change.data.archived !== undefined ||
+								change.data.sortOrder !== undefined;
+							if (hasPerUser) {
+								const existing = tx.select().from(noteUserState)
+									.where(and(eq(noteUserState.noteId, change.noteId), eq(noteUserState.userId, userId)))
+									.get();
+								if (existing) {
+									const updates: Record<string, unknown> = {};
+									if (change.data.pinned !== undefined) updates.pinned = change.data.pinned;
+									if (change.data.archived !== undefined) updates.archived = change.data.archived;
+									if (change.data.sortOrder !== undefined) updates.sortOrder = change.data.sortOrder;
+									tx.update(noteUserState).set(updates)
 										.where(and(eq(noteUserState.noteId, change.noteId), eq(noteUserState.userId, userId)))
-										.get();
-									if (existing) {
-										const updates: Record<string, unknown> = {};
-										if (change.data.pinned !== undefined) updates.pinned = change.data.pinned;
-										if (change.data.archived !== undefined) updates.archived = change.data.archived;
-										if (change.data.sortOrder !== undefined) updates.sortOrder = change.data.sortOrder;
-										tx.update(noteUserState).set(updates)
-											.where(and(eq(noteUserState.noteId, change.noteId), eq(noteUserState.userId, userId)))
-											.run();
-									} else {
-										tx.insert(noteUserState).values({
-											noteId: change.noteId,
-											userId,
-											pinned: change.data.pinned ?? false,
-											archived: change.data.archived ?? false,
-											sortOrder: change.data.sortOrder ?? 0
-										}).run();
-									}
+										.run();
+								} else {
+									tx.insert(noteUserState).values({
+										noteId: change.noteId,
+										userId,
+										pinned: change.data.pinned ?? false,
+										archived: change.data.archived ?? false,
+										sortOrder: change.data.sortOrder ?? 0
+									}).run();
 								}
 							}
 						}
@@ -140,7 +174,7 @@ export async function processSyncPush(changes: SyncQueueItem[], userId: number,
 		const note = db.select().from(notes).where(eq(notes.id, noteId)).get();
 		if (note) {
 			const content = `${note.title} ${note.content}`;
-			syncNoteTags(noteId, extractTags(content), note.userId);
+			syncNoteTags(db, noteId, extractTags(content), note.userId);
 		}
 	}
 }
@@ -151,8 +185,7 @@ export async function processSyncPush(changes: SyncQueueItem[], userId: number,
  * For shared notes, per-user state (pinned, archived, sortOrder) is overlaid
  * from noteUserState so collaborators get their own view.
  */
-export async function getChangesSince(sinceTimestamp: number, userId: number, injectedDb?: AnyDb) {
-	const db = injectedDb ?? defaultDb;
+export async function getChangesSince(db: Db, sinceTimestamp: number, userId: number) {
 	const since = new Date(sinceTimestamp);
 
 	// Owned notes

src/lib/sync/sync.test.ts

@@ -55,6 +55,71 @@ describe('mergeNotes (LWW)', () => {
 		const result = mergeNotes(local, remote);
 		expect(result.title).toBe('Local');
 	});
+
+	it('should preserve pending local fields when remote is newer', () => {
+		const local = makeNote({
+			title: 'Local title',
+			content: 'Local content',
+			color: 'coral',
+			updatedAt: new Date('2024-01-01'),
+			version: 1
+		});
+		const remote = makeNote({
+			title: 'Remote title',
+			content: 'Remote content',
+			color: 'default',
+			updatedAt: new Date('2024-01-02'),
+			version: 2
+		});
+
+		// Content has pending local changes; title and color do not
+		const pendingFields = new Set(['content']);
+		const result = mergeNotes(local, remote, pendingFields);
+
+		// Remote wins overall, but content is preserved from local
+		expect(result.title).toBe('Remote title');
+		expect(result.content).toBe('Local content');
+		expect(result.color).toBe('default'); // remote wins for non-pending field
+		expect(result.version).toBe(2); // metadata from remote
+	});
+
+	it('should take remote values for non-pending fields when remote is newer', () => {
+		const local = makeNote({
+			pinned: true,
+			archived: true,
+			updatedAt: new Date('2024-01-01')
+		});
+		const remote = makeNote({
+			pinned: false,
+			archived: false,
+			updatedAt: new Date('2024-01-02')
+		});
+
+		const pendingFields = new Set(['pinned']);
+		const result = mergeNotes(local, remote, pendingFields);
+
+		expect(result.pinned).toBe(true); // pending — preserved
+		expect(result.archived).toBe(false); // not pending — remote wins
+	});
+
+	it('should ignore pendingFields when local is newer', () => {
+		const local = makeNote({
+			title: 'Local',
+			updatedAt: new Date('2024-01-02'),
+			version: 2
+		});
+		const remote = makeNote({
+			title: 'Remote',
+			updatedAt: new Date('2024-01-01'),
+			version: 1
+		});
+
+		const pendingFields = new Set(['title']);
+		const result = mergeNotes(local, remote, pendingFields);
+
+		// Local wins entirely since it's newer
+		expect(result.title).toBe('Local');
+	});
 });
 
 describe('hasChanges', () => {

src/lib/types/index.ts

@@ -97,3 +97,26 @@ export type NoteColor =
 export type NoteFilter = 'all' | 'archived' | 'trashed';
 
 export type SyncStatus = 'synced' | 'syncing' | 'offline' | 'error';
+
+export interface NoteVersionSummary {
+	id: string;
+	noteId: string;
+	version: number;
+	title: string;
+	contentPreview: string;
+	createdAt: Date;
+}
+
+export interface NoteVersion {
+	id: string;
+	noteId: string;
+	version: number;
+	title: string;
+	content: string;
+	checklistMode: boolean;
+	color: NoteColor;
+	createdAt: Date;
+}
+
+export type { UserPreferences } from './preferences.js';
+export { DEFAULT_PREFERENCES, BOOLEAN_PREF_KEYS } from './preferences.js';

src/lib/types/preferences.ts

@@ -0,0 +1,28 @@
+import type { NoteColor } from './index.js';
+
+export interface UserPreferences {
+	defaultNoteMode: 'richtext' | 'markdown';
+	defaultNoteColor: NoteColor;
+	hideFooter: boolean;
+	sidebarDefaultState: 'open' | 'collapsed';
+	notifyOnShare: boolean;
+	notifyOnCollabRemoved: boolean;
+	notifyOnNoteDeleted: boolean;
+}
+
+export const DEFAULT_PREFERENCES: UserPreferences = {
+	defaultNoteMode: 'richtext',
+	defaultNoteColor: 'default',
+	hideFooter: false,
+	sidebarDefaultState: 'open',
+	notifyOnShare: true,
+	notifyOnCollabRemoved: true,
+	notifyOnNoteDeleted: true
+};
+
+export const BOOLEAN_PREF_KEYS: ReadonlySet<keyof UserPreferences> = new Set([
+	'hideFooter',
+	'notifyOnShare',
+	'notifyOnCollabRemoved',
+	'notifyOnNoteDeleted'
+]);

src/lib/utils/content-merge.test.ts

@@ -0,0 +1,105 @@
+import { describe, it, expect } from 'vitest';
+import { mergeContent, mergeContentTwoWay } from './content-merge.js';
+
+describe('mergeContent (3-way)', () => {
+	it('should return remote when local is unchanged', () => {
+		const base = '- [ ] Milk\n- [ ] Bread';
+		const local = '- [ ] Milk\n- [ ] Bread';
+		const remote = '- [x] Milk\n- [ ] Bread';
+
+		expect(mergeContent(base, local, remote)).toBe('- [x] Milk\n- [ ] Bread');
+	});
+
+	it('should return local when remote is unchanged', () => {
+		const base = '- [ ] Milk\n- [ ] Bread';
+		const local = '- [x] Milk\n- [ ] Bread';
+		const remote = '- [ ] Milk\n- [ ] Bread';
+
+		expect(mergeContent(base, local, remote)).toBe('- [x] Milk\n- [ ] Bread');
+	});
+
+	it('should merge when User A checks an item and User B adds an item', () => {
+		const base = '- [ ] Milk\n- [ ] Bread\n- [ ] Eggs';
+		const local = '- [x] Milk\n- [ ] Bread\n- [ ] Eggs'; // User A checks Milk
+		const remote = '- [ ] Milk\n- [ ] Bread\n- [ ] Eggs\n- [ ] Butter'; // User B adds Butter
+
+		const result = mergeContent(base, local, remote);
+		expect(result).toBe('- [x] Milk\n- [ ] Bread\n- [ ] Eggs\n- [ ] Butter');
+	});
+
+	it('should merge when both users check different items', () => {
+		const base = '- [ ] Milk\n- [ ] Bread\n- [ ] Eggs';
+		const local = '- [x] Milk\n- [ ] Bread\n- [ ] Eggs'; // User A checks Milk
+		const remote = '- [ ] Milk\n- [x] Bread\n- [ ] Eggs'; // User B checks Bread
+
+		const result = mergeContent(base, local, remote);
+		expect(result).toBe('- [x] Milk\n- [x] Bread\n- [ ] Eggs');
+	});
+
+	it('should LWW (prefer remote) when both users edit the same line', () => {
+		const base = '- [ ] Milk\n- [ ] Bread';
+		const local = '- [ ] Whole Milk\n- [ ] Bread'; // User A renames Milk
+		const remote = '- [x] Milk\n- [ ] Bread'; // User B checks Milk
+
+		const result = mergeContent(base, local, remote);
+		// Both changed line 1 — conflict resolved by preferring remote
+		expect(result).toBe('- [x] Milk\n- [ ] Bread');
+	});
+
+	it('should handle line additions by both sides', () => {
+		const base = '- [ ] Milk';
+		const local = '- [ ] Milk\n- [ ] Bread'; // User A adds Bread at end
+		const remote = '- [ ] Eggs\n- [ ] Milk'; // User B adds Eggs at beginning
+
+		const result = mergeContent(base, local, remote);
+		// Both additions should be preserved
+		expect(result).toContain('- [ ] Milk');
+		expect(result).toContain('- [ ] Bread');
+		expect(result).toContain('- [ ] Eggs');
+	});
+
+	it('should handle line deletion by one side', () => {
+		const base = '- [ ] Milk\n- [ ] Bread\n- [ ] Eggs';
+		const local = '- [ ] Milk\n- [ ] Eggs'; // User A removes Bread
+		const remote = '- [ ] Milk\n- [ ] Bread\n- [ ] Eggs'; // User B unchanged
+
+		const result = mergeContent(base, local, remote);
+		expect(result).toBe('- [ ] Milk\n- [ ] Eggs');
+	});
+
+	it('should work with non-checklist markdown (prose paragraphs)', () => {
+		const base = '# Shopping\n\nBuy groceries today.\n\n## Notes\n\nNothing special.';
+		const local = '# Shopping\n\nBuy groceries today.\n\n## Notes\n\nRemember coupons.'; // User A edits notes
+		const remote = '# Shopping List\n\nBuy groceries today.\n\n## Notes\n\nNothing special.'; // User B edits title
+
+		const result = mergeContent(base, local, remote);
+		expect(result).toContain('# Shopping List');
+		expect(result).toContain('Remember coupons.');
+	});
+
+	it('should handle empty content', () => {
+		expect(mergeContent('', '', '')).toBe('');
+		expect(mergeContent('', 'hello', '')).toBe('hello');
+		expect(mergeContent('', '', 'hello')).toBe('hello');
+	});
+
+	it('should return remote when local equals remote', () => {
+		const content = '- [ ] Milk\n- [ ] Bread';
+		expect(mergeContent('old', content, content)).toBe(content);
+	});
+});
+
+describe('mergeContentTwoWay', () => {
+	it('should return remote when both are identical', () => {
+		expect(mergeContentTwoWay('hello', 'hello')).toBe('hello');
+	});
+
+	it('should attempt merge when contents differ', () => {
+		const local = '- [x] Milk\n- [ ] Bread';
+		const remote = '- [ ] Milk\n- [ ] Bread\n- [ ] Eggs';
+
+		const result = mergeContentTwoWay(local, remote);
+		// Without a base, conflict resolution prefers remote
+		expect(result).toContain('- [ ] Bread');
+	});
+});

src/lib/utils/content-merge.ts

@@ -0,0 +1,88 @@
+import { diff3Merge } from 'node-diff3';
+
+/**
+ * Resolve a conflict region by comparing each line against the base.
+ * If only one side changed a line, take that change.
+ * If both sides changed the same line, prefer remote (LWW).
+ * Handles different-length regions by appending extra lines.
+ */
+function resolveConflict(
+	aLines: string[],
+	oLines: string[],
+	bLines: string[]
+): string[] {
+	const maxLen = Math.max(aLines.length, bLines.length, oLines.length);
+	const result: string[] = [];
+
+	for (let i = 0; i < maxLen; i++) {
+		const a = i < aLines.length ? aLines[i] : undefined;
+		const o = i < oLines.length ? oLines[i] : undefined;
+		const b = i < bLines.length ? bLines[i] : undefined;
+
+		const aChanged = a !== o;
+		const bChanged = b !== o;
+
+		if (aChanged && !bChanged && a !== undefined) {
+			// Only local changed this line — take local
+			result.push(a);
+		} else if (bChanged && !aChanged && b !== undefined) {
+			// Only remote changed this line — take remote
+			result.push(b);
+		} else if (aChanged && bChanged) {
+			// Both changed — LWW: prefer remote
+			if (b !== undefined) result.push(b);
+			// If remote deleted (undefined) but local has it, skip (remote wins)
+		} else {
+			// Neither changed, or both are the same as base
+			if (o !== undefined) result.push(o);
+			else if (b !== undefined) result.push(b);
+			else if (a !== undefined) result.push(a);
+		}
+	}
+
+	return result;
+}
+
+/**
+ * 3-way line-level merge for note content.
+ * Takes a base (common ancestor), local (incoming), and remote (server current).
+ * For conflict regions, resolves line-by-line: if only one side changed a line,
+ * take that change. If both changed the same line, prefer remote (LWW).
+ */
+export function mergeContent(base: string, local: string, remote: string): string {
+	// If any two are identical, short-circuit
+	if (local === remote) return remote;
+	if (local === base) return remote;
+	if (remote === base) return local;
+
+	const baseLines = base.split('\n');
+	const localLines = local.split('\n');
+	const remoteLines = remote.split('\n');
+
+	const regions = diff3Merge(localLines, baseLines, remoteLines);
+	const merged: string[] = [];
+
+	for (const region of regions) {
+		if (region.ok) {
+			merged.push(...region.ok);
+		} else if (region.conflict) {
+			merged.push(...resolveConflict(
+				region.conflict.a,
+				region.conflict.o,
+				region.conflict.b
+			));
+		}
+	}
+
+	return merged.join('\n');
+}
+
+/**
+ * 2-way merge fallback when no base is available.
+ * Uses an empty string as the base, so all lines from both sides appear
+ * as additions. For conflicts (same region), prefers remote.
+ */
+export function mergeContentTwoWay(local: string, remote: string): string {
+	if (local === remote) return remote;
+	return mergeContent('', local, remote);
+}

src/routes/(app)/+layout.svelte

@@ -5,13 +5,21 @@
 	import { loadNotes } from '$lib/stores/notes.js';
 	import { startSync, stopSync } from '$lib/sync/client.js';
 	import { initDb } from '$lib/sync/idb.js';
+	import { initPreferences, getPreferences } from '$lib/stores/preferences.svelte.js';
 	import { onMount, onDestroy } from 'svelte';
 
 	let { data, children } = $props();
 	let sidebarOpen = $state(false);
+	const prefs = $derived(getPreferences());
 
 	onMount(() => {
-		sidebarOpen = window.matchMedia('(min-width: 1024px)').matches;
+		initPreferences();
+		const prefState = getPreferences();
+		if (prefState.sidebarDefaultState === 'collapsed') {
+			sidebarOpen = false;
+		} else {
+			sidebarOpen = window.matchMedia('(min-width: 1024px)').matches;
+		}
 		if (data.user) {
 			initDb(data.user.id);
 		}
@@ -26,7 +34,7 @@
 
 <div class="flex min-h-screen flex-col bg-[var(--bg-base)] text-[var(--text)]">
 	<Header onMenuToggle={() => (sidebarOpen = !sidebarOpen)} />
-	<Sidebar open={sidebarOpen} onClose={() => (sidebarOpen = false)} appVersion={data.appVersion} />
+	<Sidebar open={sidebarOpen} onClose={() => (sidebarOpen = false)} />
 
 	<main class="flex-1 pt-4 transition-all {sidebarOpen ? 'lg:ml-64' : ''}">
 		<div class="mx-auto max-w-7xl px-4">
@@ -34,9 +42,11 @@
 		</div>
 	</main>
 
-	<footer class="pb-4 pt-8 text-center text-xs text-[var(--text-muted)] {sidebarOpen ? 'lg:ml-64' : ''}">
-		Crumbs by <a href="https://bretzel.app" target="_blank" rel="noopener noreferrer" class="hover:text-[var(--primary)] transition-colors">Bretzel</a> &mdash; made with 🥨 in Strasbourg
-	</footer>
+	{#if !prefs.hideFooter}
+		<footer class="pb-4 pt-8 text-center text-xs text-[var(--text-muted)] {sidebarOpen ? 'lg:ml-64' : ''}" data-testid="app-footer">
+			Crumbs by <a href="https://bretzel.app" target="_blank" rel="noopener noreferrer" class="hover:text-[var(--primary)] transition-colors">Bretzel</a> &mdash; made with 🥨 in Strasbourg
+		</footer>
+	{/if}
 
 	<Toast />
 </div>

src/routes/(app)/settings/+layout.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
 	import { page } from '$app/state';
-	import { User, Cpu, ShieldCheck } from 'lucide-svelte';
+	import { User, Cpu, ShieldCheck, SlidersHorizontal, Info } from 'lucide-svelte';
 
 	let { data, children } = $props();
 	let pathname = $derived(page.url.pathname);
@@ -19,8 +19,18 @@
 			<ul class="flex gap-1 overflow-x-auto md:flex-col md:overflow-visible">
 				<li>
 					<a
-						href="/settings"
-						class="flex items-center gap-2 rounded-sm px-3 py-2 text-sm whitespace-nowrap transition-colors {pathname === '/settings' ? 'bg-[var(--primary)]/15 text-[var(--primary)] font-medium' : 'text-[var(--text)] hover:bg-[var(--bg-base)]'}"
+						href="/settings/preferences"
+						class="flex items-center gap-2 rounded-sm px-3 py-2 text-sm whitespace-nowrap transition-colors {pathname === '/settings/preferences' ? 'bg-[var(--primary)]/15 text-[var(--primary)] font-medium' : 'text-[var(--text)] hover:bg-[var(--bg-base)]'}"
+						data-testid="settings-nav-preferences"
+					>
+						<SlidersHorizontal size={16} />
+						Preferences
+					</a>
+				</li>
+				<li>
+					<a
+						href="/settings/profile"
+						class="flex items-center gap-2 rounded-sm px-3 py-2 text-sm whitespace-nowrap transition-colors {pathname === '/settings/profile' ? 'bg-[var(--primary)]/15 text-[var(--primary)] font-medium' : 'text-[var(--text)] hover:bg-[var(--bg-base)]'}"
 					>
 						<User size={16} />
 						Profile
@@ -32,7 +42,7 @@
 						class="flex items-center gap-2 rounded-sm px-3 py-2 text-sm whitespace-nowrap transition-colors {pathname === '/settings/mcp' ? 'bg-[var(--primary)]/15 text-[var(--primary)] font-medium' : 'text-[var(--text)] hover:bg-[var(--bg-base)]'}"
 					>
 						<Cpu size={16} />
-						MCP Server
+						API
 					</a>
 				</li>
 				{#if data.user?.role === 'admin'}
@@ -46,6 +56,15 @@
 						</a>
 					</li>
 				{/if}
+				<li>
+					<a
+						href="/settings/about"
+						class="flex items-center gap-2 rounded-sm px-3 py-2 text-sm whitespace-nowrap transition-colors {pathname === '/settings/about' ? 'bg-[var(--primary)]/15 text-[var(--primary)] font-medium' : 'text-[var(--text)] hover:bg-[var(--bg-base)]'}"
+					>
+						<Info size={16} />
+						About
+					</a>
+				</li>
 			</ul>
 		</nav>
 

src/routes/(app)/settings/+page.server.ts

@@ -0,0 +1,5 @@
+import { redirect } from '@sveltejs/kit';
+
+export function load() {
+	redirect(302, '/settings/preferences');
+}

src/routes/(app)/settings/about/+page.svelte

@@ -0,0 +1,81 @@
+<script lang="ts">
+	import { page } from '$app/stores';
+
+	let appVersion = $derived($page.data.appVersion);
+</script>
+
+<div class="space-y-8">
+	<div class="flex items-center gap-3">
+		<h2 class="text-xl font-bold text-[var(--text)]">About Crumbs</h2>
+		<span
+			class="rounded-sm border border-[var(--border-subtle)] bg-[var(--bg-base)] px-2 py-0.5 text-xs font-medium text-[var(--text-muted)]"
+		>
+			v{appVersion}
+		</span>
+	</div>
+
+	<section
+		class="space-y-2 rounded-sm border border-[var(--border-subtle)] bg-[var(--bg-surface)] p-4 shadow-[var(--card-shadow)]"
+	>
+		<h3 class="text-sm font-bold text-[var(--text)]">What is Crumbs?</h3>
+		<p class="text-sm leading-relaxed text-[var(--text-muted)]">
+			Crumbs is a self-hostable note-taking app. Like breadcrumbs left along a trail, Crumbs
+			captures the small scattered thoughts, ideas, and notes you leave behind as you go — so you
+			can always find your way back to them.
+		</p>
+	</section>
+
+	<section
+		class="space-y-2 rounded-sm border border-[var(--border-subtle)] bg-[var(--bg-surface)] p-4 shadow-[var(--card-shadow)]"
+	>
+		<h3 class="text-sm font-bold text-[var(--text)]">Bretzel App Universe</h3>
+		<p class="text-sm leading-relaxed text-[var(--text-muted)]">
+			Crumbs is part of the
+			<a
+				href="https://bretzel.app"
+				target="_blank"
+				rel="noopener noreferrer"
+				class="text-[var(--primary)] underline hover:text-[var(--primary-hover)]">bretzel.app</a
+			> universe.
+		</p>
+	</section>
+
+	<section
+		class="space-y-2 rounded-sm border border-[var(--border-subtle)] bg-[var(--bg-surface)] p-4 shadow-[var(--card-shadow)]"
+	>
+		<h3 class="text-sm font-bold text-[var(--text)]">Open Source</h3>
+		<p class="text-sm leading-relaxed text-[var(--text-muted)]">
+			Crumbs is licensed under the MIT License. Source code is available on
+			<a
+				href="https://github.com/bretzel-app/crumbs/"
+				target="_blank"
+				rel="noopener noreferrer"
+				class="text-[var(--primary)] underline hover:text-[var(--primary-hover)]">GitHub</a
+			>.
+		</p>
+	</section>
+
+	<section
+		class="space-y-2 rounded-sm border border-[var(--border-subtle)] bg-[var(--bg-surface)] p-4 shadow-[var(--card-shadow)]"
+	>
+		<h3 class="text-sm font-bold text-[var(--text)]">Feedback</h3>
+		<p class="text-sm leading-relaxed text-[var(--text-muted)]">
+			Feedback is welcome! Please open an issue on
+			<a
+				href="https://github.com/bretzel-app/crumbs/issues"
+				target="_blank"
+				rel="noopener noreferrer"
+				class="text-[var(--primary)] underline hover:text-[var(--primary-hover)]">GitHub Issues</a
+			>.
+		</p>
+	</section>
+
+	<section
+		class="space-y-2 rounded-sm border border-[var(--border-subtle)] bg-[var(--bg-surface)] p-4 shadow-[var(--card-shadow)]"
+	>
+		<h3 class="text-sm font-bold text-[var(--text)]">Tech Stack</h3>
+		<p class="text-sm leading-relaxed text-[var(--text-muted)]">
+			Built with SvelteKit, SQLite, and Drizzle ORM. Offline-first PWA with CRDT-based sync.
+		</p>
+	</section>
+</div>

src/routes/(app)/settings/mcp/+page.svelte

@@ -122,7 +122,7 @@ ${mcpJsonConfig}`);
 		<h2 class="text-lg font-semibold text-[var(--text)]">API Keys</h2>
 	</div>
 	<p class="mb-4 text-xs text-[var(--text-muted)]">
-		API keys allow external tools (like Claude Code) to access your notes via the MCP protocol.
+		API keys allow external tools to access your notes via the MCP protocol and the REST API.
 	</p>
 
 	<!-- Create Key Form -->
@@ -229,9 +229,19 @@ ${mcpJsonConfig}`);
 	{/if}
 </section>
 
+<!-- REST API Example -->
+<section class="mb-6 rounded-sm border border-[var(--border-subtle)] bg-[var(--bg-surface)] p-6 shadow-[var(--card-shadow)]">
+	<h2 class="mb-4 text-lg font-semibold text-[var(--text)]">REST API</h2>
+	<p class="mb-3 text-xs text-[var(--text-muted)]">
+		Use your API key to authenticate requests to any <code class="rounded-sm bg-[var(--bg-base)] px-1 py-0.5">/api/*</code> endpoint:
+	</p>
+	<pre class="overflow-x-auto rounded-sm bg-[var(--bg-base)] p-3 text-xs text-[var(--text)]">curl -H "Authorization: Bearer {activeApiKey}" \
+  {baseUrl}/api/notes</pre>
+</section>
+
 <!-- MCP Config Help -->
 <section class="rounded-sm border border-[var(--border-subtle)] bg-[var(--bg-surface)] p-6 shadow-[var(--card-shadow)]">
-	<h2 class="mb-4 text-lg font-semibold text-[var(--text)]">Client Configuration</h2>
+	<h2 class="mb-4 text-lg font-semibold text-[var(--text)]">MCP Client Configuration</h2>
 	<p class="mb-3 text-xs text-[var(--text-muted)]">
 		Add this to your <code class="rounded-sm bg-[var(--bg-base)] px-1 py-0.5">.claude/settings.json</code> (Claude Code):
 	</p>

src/routes/(app)/settings/preferences/+page.svelte

@@ -0,0 +1,105 @@
+<script lang="ts">
+	import ColorPicker from '$lib/components/ColorPicker.svelte';
+	import { getPreferences, updatePreference } from '$lib/stores/preferences.svelte.js';
+	import type { NoteColor } from '$lib/types/index.js';
+
+	const prefs = $derived(getPreferences());
+</script>
+
+<div class="space-y-8">
+	<h2 class="text-xl font-bold text-[var(--text)]">Preferences</h2>
+
+	<!-- Default note mode -->
+	<div class="space-y-2">
+		<span class="block text-sm font-medium text-[var(--text)]">Default note mode</span>
+		<div class="flex gap-1" role="group" aria-label="Default note mode">
+			<button
+				onclick={() => updatePreference('defaultNoteMode', 'richtext')}
+				class="rounded-sm border px-4 py-2 text-sm transition-colors {prefs.defaultNoteMode === 'richtext' ? 'border-[var(--primary)] bg-[var(--primary)]/15 text-[var(--primary)] font-medium' : 'border-[var(--border-subtle)] text-[var(--text)] hover:border-[var(--primary)]'}"
+				data-testid="pref-mode-richtext"
+			>
+				Rich text
+			</button>
+			<button
+				onclick={() => updatePreference('defaultNoteMode', 'markdown')}
+				class="rounded-sm border px-4 py-2 text-sm transition-colors {prefs.defaultNoteMode === 'markdown' ? 'border-[var(--primary)] bg-[var(--primary)]/15 text-[var(--primary)] font-medium' : 'border-[var(--border-subtle)] text-[var(--text)] hover:border-[var(--primary)]'}"
+				data-testid="pref-mode-markdown"
+			>
+				Markdown
+			</button>
+		</div>
+	</div>
+
+	<!-- Default note color -->
+	<div class="space-y-2">
+		<span class="block text-sm font-medium text-[var(--text)]">Default note color</span>
+		<ColorPicker
+			selected={prefs.defaultNoteColor}
+			onSelect={(color: NoteColor) => updatePreference('defaultNoteColor', color)}
+		/>
+	</div>
+
+	<!-- Hide footer -->
+	<div class="flex items-center gap-3">
+		<input
+			type="checkbox"
+			id="hide-footer"
+			checked={prefs.hideFooter}
+			onchange={() => updatePreference('hideFooter', !prefs.hideFooter)}
+			class="h-4 w-4 rounded-sm"
+			data-testid="pref-hide-footer"
+		/>
+		<label for="hide-footer" class="text-sm text-[var(--text)]">Hide footer</label>
+	</div>
+
+	<!-- Sidebar default state -->
+	<div class="flex items-center gap-3">
+		<input
+			type="checkbox"
+			id="sidebar-default"
+			checked={prefs.sidebarDefaultState === 'collapsed'}
+			onchange={() => updatePreference('sidebarDefaultState', prefs.sidebarDefaultState === 'collapsed' ? 'open' : 'collapsed')}
+			class="h-4 w-4 rounded-sm"
+			data-testid="pref-sidebar-default"
+		/>
+		<label for="sidebar-default" class="text-sm text-[var(--text)]">Start with sidebar collapsed</label>
+	</div>
+
+	<!-- Email notifications -->
+	<div class="space-y-3">
+		<span class="block text-sm font-medium text-[var(--text)]">Email notifications</span>
+		<div class="flex items-center gap-3">
+			<input
+				type="checkbox"
+				id="notify-on-share"
+				checked={prefs.notifyOnShare}
+				onchange={() => updatePreference('notifyOnShare', !prefs.notifyOnShare)}
+				class="h-4 w-4 rounded-sm"
+				data-testid="pref-notify-on-share"
+			/>
+			<label for="notify-on-share" class="text-sm text-[var(--text)]">Email me when someone shares a note with me</label>
+		</div>
+		<div class="flex items-center gap-3">
+			<input
+				type="checkbox"
+				id="notify-on-collab-removed"
+				checked={prefs.notifyOnCollabRemoved}
+				onchange={() => updatePreference('notifyOnCollabRemoved', !prefs.notifyOnCollabRemoved)}
+				class="h-4 w-4 rounded-sm"
+				data-testid="pref-notify-on-collab-removed"
+			/>
+			<label for="notify-on-collab-removed" class="text-sm text-[var(--text)]">Email me when I'm removed from a shared note</label>
+		</div>
+		<div class="flex items-center gap-3">
+			<input
+				type="checkbox"
+				id="notify-on-note-deleted"
+				checked={prefs.notifyOnNoteDeleted}
+				onchange={() => updatePreference('notifyOnNoteDeleted', !prefs.notifyOnNoteDeleted)}
+				class="h-4 w-4 rounded-sm"
+				data-testid="pref-notify-on-note-deleted"
+			/>
+			<label for="notify-on-note-deleted" class="text-sm text-[var(--text)]">Email me when a shared note I have access to is deleted</label>
+		</div>
+	</div>
+</div>

src/routes/+layout.svelte

@@ -1,7 +1,30 @@
 <script lang="ts">
 	import '../app.css';
+	import { onMount } from 'svelte';
+	import { pwaInfo } from 'virtual:pwa-info';
 
 	let { children } = $props();
+
+	onMount(async () => {
+		if (pwaInfo) {
+			const { registerSW } = await import('virtual:pwa-register');
+			registerSW({
+				immediate: true,
+				onRegistered(r: ServiceWorkerRegistration | undefined) {
+					console.log('SW Registered:', r);
+				},
+				onRegisterError(error: Error) {
+					console.log('SW registration error', error);
+				}
+			});
+		}
+	});
+
+	const webManifest = $derived(pwaInfo ? pwaInfo.webManifest.linkTag : '');
 </script>
 
+<svelte:head>
+	{@html webManifest}
+</svelte:head>
+
 {@render children()}

src/routes/api/admin/users/+server.ts

@@ -2,6 +2,7 @@ import { json, error } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
 import { requireAdmin } from '$lib/server/api-utils.js';
 import { listUsers, createUser } from '$lib/server/auth.js';
+import { isEmailConfigured, sendWelcomeEmail } from '$lib/server/email.js';
 
 export const GET: RequestHandler = async (event) => {
 	requireAdmin(event);
@@ -21,5 +22,12 @@ export const POST: RequestHandler = async ({ request, ...event }) => {
 	}
 
 	const user = await createUser(email, displayName || email.split('@')[0], password || null, role || 'user');
+
+	// Send welcome email (fire-and-forget)
+	if (isEmailConfigured() && user.email) {
+		const origin = process.env.ORIGIN || 'http://localhost:3000';
+		sendWelcomeEmail(user.email, user.displayName, origin).catch(() => {});
+	}
+
 	return json(user, { status: 201 });
 };

src/routes/api/admin/users/[id]/+server.ts

@@ -2,6 +2,7 @@ import { json, error } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
 import { requireAdmin } from '$lib/server/api-utils.js';
 import { getUser, deleteUser, updateUserRole, resetPassword, revokeAllSessions } from '$lib/server/auth.js';
+import { isEmailConfigured, sendPasswordResetEmail, sendRoleChangedEmail } from '$lib/server/email.js';
 
 export const PATCH: RequestHandler = async ({ params, request, ...event }) => {
 	const admin = requireAdmin(event);
@@ -11,12 +12,19 @@ export const PATCH: RequestHandler = async ({ params, request, ...event }) => {
 	const user = getUser(userId);
 	if (!user) throw error(404, 'User not found');
 
+	const origin = process.env.ORIGIN || 'http://localhost:3000';
+
 	if (body.role !== undefined) {
 		// Prevent admin from demoting themselves
 		if (userId === admin.id && body.role !== 'admin') {
 			throw error(400, 'Cannot change your own role');
 		}
 		updateUserRole(userId, body.role);
+
+		// Notify user of role change (fire-and-forget)
+		if (isEmailConfigured() && user.email) {
+			sendRoleChangedEmail(user.email, user.displayName, body.role, origin).catch(() => {});
+		}
 	}
 
 	if (body.newPassword !== undefined) {
@@ -24,6 +32,11 @@ export const PATCH: RequestHandler = async ({ params, request, ...event }) => {
 			throw error(400, 'Password must be at least 8 characters');
 		}
 		await resetPassword(userId, body.newPassword);
+
+		// Notify user of password reset (fire-and-forget)
+		if (isEmailConfigured() && user.email) {
+			sendPasswordResetEmail(user.email, user.displayName, origin).catch(() => {});
+		}
 	}
 
 	if (body.revokeSessions) {

src/routes/api/auth/account/+server.ts

@@ -2,6 +2,7 @@ import { json, error } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
 import { getUserId } from '$lib/server/api-utils.js';
 import { verifyPassword, deleteUser, deleteSession, getUser } from '$lib/server/auth.js';
+import { isEmailConfigured, sendAccountDeletedEmail } from '$lib/server/email.js';
 
 export const DELETE: RequestHandler = async ({ request, cookies, ...event }) => {
 	const userId = getUserId(event);
@@ -17,6 +18,9 @@ export const DELETE: RequestHandler = async ({ request, cookies, ...event }) =>
 		if (!verified) throw error(401, 'Invalid password');
 	}
 
+	// Capture email/name before deletion
+	const { email: userEmail, displayName: userName } = user;
+
 	// Delete user and all associated data
 	await deleteUser(userId);
 
@@ -27,5 +31,10 @@ export const DELETE: RequestHandler = async ({ request, cookies, ...event }) =>
 		cookies.delete('session', { path: '/' });
 	}
 
+	// Send deletion confirmation email (fire-and-forget)
+	if (isEmailConfigured() && userEmail) {
+		sendAccountDeletedEmail(userEmail, userName).catch(() => {});
+	}
+
 	return json({ success: true });
 };

src/routes/api/auth/login/+server.ts

@@ -2,6 +2,10 @@ import { json, error } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
 import { verifyPassword, createSession } from '$lib/server/auth.js';
 import { checkRateLimit, recordLoginAttempt } from '$lib/server/rate-limit.js';
+import { db } from '$lib/server/db/index.js';
+import { users } from '$lib/server/db/schema.js';
+import { eq } from 'drizzle-orm';
+import { isEmailConfigured, sendAccountLockedEmail } from '$lib/server/email.js';
 
 export const POST: RequestHandler = async ({ request, cookies, getClientAddress }) => {
 	const ip = getClientAddress();
@@ -11,7 +15,7 @@ export const POST: RequestHandler = async ({ request, cookies, getClientAddress
 		throw error(400, 'Email and password are required');
 	}
 
-	const rateCheck = checkRateLimit(ip, email);
+	const rateCheck = checkRateLimit(db, ip, email);
 	if (!rateCheck.allowed) {
 		return json(
 			{ error: 'Too many login attempts. Please try again later.', retryAfter: rateCheck.retryAfter },
@@ -21,11 +25,32 @@ export const POST: RequestHandler = async ({ request, cookies, getClientAddress
 
 	const user = await verifyPassword(email, password);
 	if (!user) {
-		recordLoginAttempt(ip, email, false);
+		recordLoginAttempt(db, ip, email, false);
+
+		// Check if this failure just triggered a lockout — if so, notify the user
+		if (isEmailConfigured()) {
+			const newCheck = checkRateLimit(db, ip, email);
+			if (!newCheck.allowed) {
+				const retryAfterMinutes = Math.ceil((newCheck.retryAfter ?? 900) / 60);
+				const accountUser = db
+					.select({ email: users.email, displayName: users.displayName })
+					.from(users)
+					.where(eq(users.email, email))
+					.get();
+				if (accountUser?.email) {
+					sendAccountLockedEmail(
+						accountUser.email,
+						accountUser.displayName,
+						retryAfterMinutes
+					).catch(() => {});
+				}
+			}
+		}
+
 		throw error(401, 'Invalid email or password');
 	}
 
-	recordLoginAttempt(ip, email, true);
+	recordLoginAttempt(db, ip, email, true);
 
 	const userAgent = request.headers.get('user-agent') || undefined;
 	const token = await createSession(user.id, { userAgent, ip });

src/routes/api/auth/profile/+server.ts

@@ -1,7 +1,8 @@
 import { json, error } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
 import { getUserId } from '$lib/server/api-utils.js';
-import { updateUserProfile } from '$lib/server/auth.js';
+import { updateUserProfile, getUser } from '$lib/server/auth.js';
+import { isEmailConfigured, sendEmailChangedEmail } from '$lib/server/email.js';
 
 export const PUT: RequestHandler = async ({ request, ...event }) => {
 	const userId = getUserId(event);
@@ -11,6 +12,15 @@ export const PUT: RequestHandler = async ({ request, ...event }) => {
 		throw error(400, 'Email cannot be empty');
 	}
 
+	// Capture old email before update to notify on change
+	const existingUser = email !== undefined ? getUser(userId) : null;
+
 	updateUserProfile(userId, { displayName, email });
+
+	// Send notification to old email when email address changes
+	if (isEmailConfigured() && existingUser?.email && email && existingUser.email !== email) {
+		sendEmailChangedEmail(existingUser.email, existingUser.displayName, email).catch(() => {});
+	}
+
 	return json({ success: true });
 };

src/routes/api/notes/+server.ts

@@ -1,5 +1,6 @@
 import { json } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
+import { db } from '$lib/server/db/index.js';
 import { getUserId } from '$lib/server/api-utils.js';
 import { listNotes, createNote } from '$lib/server/notes-service.js';
 import type { NoteFilter } from '$lib/types/index.js';
@@ -7,13 +8,13 @@ import type { NoteFilter } from '$lib/types/index.js';
 export const GET: RequestHandler = async ({ url, ...event }) => {
 	const userId = getUserId(event);
 	const filter = (url.searchParams.get('filter') || 'all') as NoteFilter;
-	const result = listNotes(userId, filter);
+	const result = listNotes(db, userId, filter);
 	return json(result);
 };
 
 export const POST: RequestHandler = async ({ request, ...event }) => {
 	const userId = getUserId(event);
 	const body = await request.json();
-	const newNote = createNote(userId, body);
+	const newNote = createNote(db, userId, body);
 	return json(newNote, { status: 201 });
 };

src/routes/api/notes/[id]/+server.ts

@@ -1,11 +1,15 @@
 import { json, error } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
+import { db } from '$lib/server/db/index.js';
 import { getUserId, requireNoteAccess, requireNoteOwnership } from '$lib/server/api-utils.js';
 import { getNote, updateNote, deleteNote } from '$lib/server/notes-service.js';
+import { fetchCollaboratorsForNotes } from '$lib/server/collaborators.js';
+import { isEmailConfigured, sendNotePermanentlyDeletedEmail } from '$lib/server/email.js';
+import { getPreferences } from '$lib/server/preferences.js';
 
 export const GET: RequestHandler = async ({ params, ...event }) => {
 	const userId = getUserId(event);
-	const note = getNote(userId, params.id);
+	const note = getNote(db, userId, params.id);
 	if (!note) throw error(404, 'Note not found');
 
 	return json(note);
@@ -14,7 +18,7 @@ export const GET: RequestHandler = async ({ params, ...event }) => {
 export const PATCH: RequestHandler = async ({ params, request, ...event }) => {
 	const userId = getUserId(event);
 	const body = await request.json();
-	const updated = updateNote(userId, params.id, body);
+	const updated = updateNote(db, userId, params.id, body);
 	if (!updated) throw error(404, 'Note not found');
 
 	return json(updated);
@@ -22,10 +26,34 @@ export const PATCH: RequestHandler = async ({ params, request, ...event }) => {
 
 export const DELETE: RequestHandler = async ({ params, ...event }) => {
 	const userId = getUserId(event);
-	requireNoteOwnership(params.id, userId);
+	requireNoteOwnership(db, params.id, userId);
 
-	const deleted = deleteNote(userId, params.id);
+	// Fetch note and collaborators before deletion to send notifications
+	let collaboratorsToNotify: Array<{ email: string; displayName: string }> = [];
+	let noteTitle = 'Untitled';
+
+	if (isEmailConfigured()) {
+		const note = getNote(db, userId, params.id);
+		if (note) {
+			noteTitle = note.title || 'Untitled';
+			const collabMap = fetchCollaboratorsForNotes(db, [params.id]);
+			const collaborators = collabMap.get(params.id) ?? [];
+			for (const collab of collaborators) {
+				const prefs = getPreferences(db, collab.userId);
+				if (prefs.notifyOnNoteDeleted !== 'false' && collab.email) {
+					collaboratorsToNotify.push({ email: collab.email, displayName: collab.displayName });
+				}
+			}
+		}
+	}
+
+	const deleted = deleteNote(db, userId, params.id);
 	if (!deleted) throw error(404, 'Note not found');
 
+	// Notify collaborators about the deleted note (fire-and-forget)
+	for (const collab of collaboratorsToNotify) {
+		sendNotePermanentlyDeletedEmail(collab.email, collab.displayName, noteTitle).catch(() => {});
+	}
+
 	return json({ success: true });
 };

src/routes/api/notes/[id]/attachments/+server.ts

@@ -2,16 +2,17 @@ import { json, error } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
 import { saveAttachment, getAttachmentsByNote, getAttachment, deleteAttachment, updateAttachment } from '$lib/server/attachments.js';
 import { readFile } from 'fs/promises';
+import { db } from '$lib/server/db/index.js';
 import { getUserId, requireNoteAccess } from '$lib/server/api-utils.js';
 
 export const GET: RequestHandler = async ({ params, url, ...event }) => {
 	const userId = getUserId(event);
-	requireNoteAccess(params.id, userId);
+	requireNoteAccess(db, params.id, userId);
 
 	const attachmentId = url.searchParams.get('attachmentId');
 
 	if (attachmentId) {
-		const attachment = await getAttachment(attachmentId, params.id);
+		const attachment = await getAttachment(db, attachmentId, params.id);
 		if (!attachment) throw error(404, 'Attachment not found');
 
 		const wantThumb = url.searchParams.get('thumb') === '1';
@@ -28,13 +29,13 @@ export const GET: RequestHandler = async ({ params, url, ...event }) => {
 		});
 	}
 
-	const list = await getAttachmentsByNote(params.id);
+	const list = await getAttachmentsByNote(db, params.id);
 	return json(list);
 };
 
 export const POST: RequestHandler = async ({ params, request, ...event }) => {
 	const userId = getUserId(event);
-	requireNoteAccess(params.id, userId);
+	requireNoteAccess(db, params.id, userId);
 
 	const formData = await request.formData();
 	const file = formData.get('file') as File;
@@ -53,13 +54,13 @@ export const POST: RequestHandler = async ({ params, request, ...event }) => {
 	}
 
 	const thumbnail = formData.get('thumbnail') as File | null;
-	const attachment = await saveAttachment(params.id, file, userId, thumbnail);
+	const attachment = await saveAttachment(db, params.id, file, userId, thumbnail);
 	return json(attachment, { status: 201 });
 };
 
 export const PATCH: RequestHandler = async ({ params, url, request, ...event }) => {
 	const userId = getUserId(event);
-	requireNoteAccess(params.id, userId);
+	requireNoteAccess(db, params.id, userId);
 
 	const attachmentId = url.searchParams.get('attachmentId');
 	if (!attachmentId) throw error(400, 'attachmentId required');
@@ -67,7 +68,7 @@ export const PATCH: RequestHandler = async ({ params, url, request, ...event })
 	const body = await request.json();
 	if (typeof body.featured !== 'boolean') throw error(400, 'featured (boolean) required');
 
-	const updated = await updateAttachment(attachmentId, params.id, { featured: body.featured });
+	const updated = await updateAttachment(db, attachmentId, params.id, { featured: body.featured });
 	if (!updated) throw error(404, 'Attachment not found');
 
 	return json(updated);
@@ -75,11 +76,11 @@ export const PATCH: RequestHandler = async ({ params, url, request, ...event })
 
 export const DELETE: RequestHandler = async ({ params, url, ...event }) => {
 	const userId = getUserId(event);
-	requireNoteAccess(params.id, userId);
+	requireNoteAccess(db, params.id, userId);
 
 	const attachmentId = url.searchParams.get('attachmentId');
 	if (!attachmentId) throw error(400, 'attachmentId required');
 
-	await deleteAttachment(attachmentId, params.id);
+	await deleteAttachment(db, attachmentId, params.id);
 	return json({ success: true });
 };

src/routes/api/notes/[id]/collaborators/+server.ts

@@ -5,18 +5,24 @@ import { addCollaborator, removeCollaborator, fetchCollaboratorsForNotes } from
 import { db } from '$lib/server/db/index.js';
 import { users, notes, noteCollaborators } from '$lib/server/db/schema.js';
 import { eq, and } from 'drizzle-orm';
+import {
+	isEmailConfigured,
+	sendShareNotification,
+	sendCollaboratorRemovedEmail
+} from '$lib/server/email.js';
+import { getPreferences } from '$lib/server/preferences.js';
 
 export const GET: RequestHandler = async ({ params, ...event }) => {
 	const userId = getUserId(event);
-	requireNoteAccess(params.id, userId);
+	requireNoteAccess(db, params.id, userId);
 
-	const collaborators = fetchCollaboratorsForNotes([params.id]);
+	const collaborators = fetchCollaboratorsForNotes(db, [params.id]);
 	return json(collaborators.get(params.id) ?? []);
 };
 
 export const POST: RequestHandler = async ({ params, request, ...event }) => {
 	const userId = getUserId(event);
-	requireNoteOwnership(params.id, userId);
+	requireNoteOwnership(db, params.id, userId);
 
 	const body = await request.json();
 	const targetUserId = body.userId;
@@ -46,9 +52,42 @@ export const POST: RequestHandler = async ({ params, request, ...event }) => {
 		throw error(409, 'User is already a collaborator');
 	}
 
-	addCollaborator(params.id, targetUserId, userId);
+	addCollaborator(db, params.id, targetUserId, userId);
 
-	const collaborators = fetchCollaboratorsForNotes([params.id]);
+	// Send email notification (fire-and-forget)
+	if (isEmailConfigured()) {
+		const targetPrefs = getPreferences(db, targetUserId);
+		if (targetPrefs.notifyOnShare !== 'false') {
+			const target = db
+				.select({ email: users.email, displayName: users.displayName })
+				.from(users)
+				.where(eq(users.id, targetUserId))
+				.get();
+			const sharer = db
+				.select({ displayName: users.displayName })
+				.from(users)
+				.where(eq(users.id, userId))
+				.get();
+			const noteData = db
+				.select({ title: notes.title })
+				.from(notes)
+				.where(eq(notes.id, params.id))
+				.get();
+			const origin = process.env.ORIGIN || 'http://localhost:3000';
+
+			if (target?.email) {
+				sendShareNotification(
+					target.email,
+					target.displayName,
+					sharer?.displayName || 'Someone',
+					noteData?.title || 'Untitled',
+					origin
+				).catch(() => {});
+			}
+		}
+	}
+
+	const collaborators = fetchCollaboratorsForNotes(db, [params.id]);
 	return json(collaborators.get(params.id) ?? [], { status: 201 });
 };
 
@@ -60,14 +99,57 @@ export const DELETE: RequestHandler = async ({ params, url, ...event }) => {
 		throw error(400, 'userId query parameter is required');
 	}
 
-	const { isOwner } = requireNoteAccess(params.id, userId);
+	const { isOwner } = requireNoteAccess(db, params.id, userId);
 
 	// Owner can remove anyone. Collaborator can only remove self.
 	if (!isOwner && targetUserId !== userId) {
 		throw error(403, 'Only the owner can remove other collaborators');
 	}
 
-	removeCollaborator(params.id, targetUserId);
+	// Fetch collaborator info and note title before removal for email notification
+	let removedUserEmail: string | undefined;
+	let removedUserName: string | undefined;
+	let noteTitle: string | undefined;
+	let ownerName: string | undefined;
+
+	if (isEmailConfigured() && isOwner && targetUserId !== userId) {
+		const targetPrefs = getPreferences(db, targetUserId);
+		if (targetPrefs.notifyOnCollabRemoved !== 'false') {
+			const target = db
+				.select({ email: users.email, displayName: users.displayName })
+				.from(users)
+				.where(eq(users.id, targetUserId))
+				.get();
+			const noteData = db
+				.select({ title: notes.title })
+				.from(notes)
+				.where(eq(notes.id, params.id))
+				.get();
+			const owner = db
+				.select({ displayName: users.displayName })
+				.from(users)
+				.where(eq(users.id, userId))
+				.get();
+			removedUserEmail = target?.email ?? undefined;
+			removedUserName = target?.displayName ?? undefined;
+			noteTitle = noteData?.title ?? undefined;
+			ownerName = owner?.displayName ?? undefined;
+		}
+	}
+
+	removeCollaborator(db, params.id, targetUserId);
+
+	// Send notification to removed collaborator (fire-and-forget)
+	if (removedUserEmail) {
+		const origin = process.env.ORIGIN || 'http://localhost:3000';
+		sendCollaboratorRemovedEmail(
+			removedUserEmail,
+			removedUserName || '',
+			ownerName || 'Someone',
+			noteTitle || 'Untitled',
+			origin
+		).catch(() => {});
+	}
 
 	return json({ success: true });
 };

src/routes/api/notes/[id]/versions/+server.ts

@@ -0,0 +1,13 @@
+import { json, error } from '@sveltejs/kit';
+import type { RequestHandler } from './$types.js';
+import { db } from '$lib/server/db/index.js';
+import { getUserId, requireNoteAccess } from '$lib/server/api-utils.js';
+import { listVersions } from '$lib/server/versions-service.js';
+
+export const GET: RequestHandler = async ({ params, ...event }) => {
+	const userId = getUserId(event);
+	requireNoteAccess(db, params.id, userId);
+
+	const versions = listVersions(db, params.id);
+	return json(versions);
+};

src/routes/api/notes/[id]/versions/[versionId]/+server.ts

@@ -0,0 +1,15 @@
+import { json, error } from '@sveltejs/kit';
+import type { RequestHandler } from './$types.js';
+import { db } from '$lib/server/db/index.js';
+import { getUserId, requireNoteAccess } from '$lib/server/api-utils.js';
+import { getVersion } from '$lib/server/versions-service.js';
+
+export const GET: RequestHandler = async ({ params, ...event }) => {
+	const userId = getUserId(event);
+	requireNoteAccess(db, params.id, userId);
+
+	const version = getVersion(db, params.id, params.versionId);
+	if (!version) throw error(404, 'Version not found');
+
+	return json(version);
+};

src/routes/api/notes/[id]/versions/[versionId]/restore/+server.ts

@@ -0,0 +1,29 @@
+import { json, error } from '@sveltejs/kit';
+import type { RequestHandler } from './$types.js';
+import { db } from '$lib/server/db/index.js';
+import { getUserId, requireNoteAccess } from '$lib/server/api-utils.js';
+import { getVersion, snapshotCurrentNote } from '$lib/server/versions-service.js';
+import { updateNote } from '$lib/server/notes-service.js';
+
+export const POST: RequestHandler = async ({ params, ...event }) => {
+	const userId = getUserId(event);
+	requireNoteAccess(db, params.id, userId);
+
+	const version = getVersion(db, params.id, params.versionId);
+	if (!version) throw error(404, 'Version not found');
+
+	// Snapshot current state before overwriting so the user can undo the restore
+	snapshotCurrentNote(db, params.id);
+
+	// Apply the restored content (updateNote will increment version + create a new snapshot)
+	const restored = updateNote(db, userId, params.id, {
+		title: version.title,
+		content: version.content,
+		checklistMode: version.checklistMode,
+		color: version.color
+	});
+
+	if (!restored) throw error(404, 'Note not found');
+
+	return json(restored);
+};

src/routes/api/notes/reorder/+server.ts

@@ -1,5 +1,6 @@
 import { json } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
+import { db } from '$lib/server/db/index.js';
 import { reorderNotes } from '$lib/server/notes-service.js';
 import { getUserId } from '$lib/server/api-utils.js';
 
@@ -12,6 +13,6 @@ export const POST: RequestHandler = async ({ request, ...event }) => {
 		return json({ error: 'Invalid payload' }, { status: 400 });
 	}
 
-	reorderNotes(userId, orders);
+	reorderNotes(db, userId, orders);
 	return json({ ok: true });
 };

src/routes/api/preferences/+server.ts

@@ -0,0 +1,18 @@
+import { json } from '@sveltejs/kit';
+import type { RequestHandler } from './$types.js';
+import { db } from '$lib/server/db/index.js';
+import { getUserId } from '$lib/server/api-utils.js';
+import { getPreferences, upsertPreferences } from '$lib/server/preferences.js';
+
+export const GET: RequestHandler = async (event) => {
+	const userId = getUserId(event);
+	const prefs = getPreferences(db, userId);
+	return json(prefs);
+};
+
+export const PUT: RequestHandler = async ({ request, ...event }) => {
+	const userId = getUserId(event);
+	const body: Record<string, string> = await request.json();
+	const updated = upsertPreferences(db, userId, body);
+	return json(updated);
+};

src/routes/api/search/+server.ts

@@ -1,5 +1,6 @@
 import { json } from '@sveltejs/kit';
 import type { RequestHandler } from './$types.js';
+import { db } from '$lib/server/db/index.js';
 import { getUserId } from '$lib/server/api-utils.js';
 import { searchNotes } from '$lib/server/notes-service.js';
 
@@ -11,6 +12,6 @@ export const GET: RequestHandler = async ({ url, ...event }) => {
 		return json([]);
 	}
 
-	const results = searchNotes(userId, query);
+	const results = searchNotes(db, userId, query);
 	return json(results);
 };

src/routes/api/sync/+server.ts

@@ -4,6 +4,7 @@ import { processSyncPush, getChangesSince } from '$lib/sync/server.js';
 import { fetchTagsForNotes } from '$lib/server/tags.js';
 import { fetchAttachmentsForNotes } from '$lib/server/attachments.js';
 import { getUserId } from '$lib/server/api-utils.js';
+import { db } from '$lib/server/db/index.js';
 
 export const POST: RequestHandler = async ({ request, ...event }) => {
 	const userId = getUserId(event);
@@ -13,18 +14,18 @@ export const POST: RequestHandler = async ({ request, ...event }) => {
 		return json({ error: 'Invalid changes' }, { status: 400 });
 	}
 
-	await processSyncPush(changes, userId);
+	await processSyncPush(db, changes, userId);
 	return json({ success: true });
 };
 
 export const GET: RequestHandler = async ({ url, ...event }) => {
 	const userId = getUserId(event);
 	const since = parseInt(url.searchParams.get('since') || '0', 10);
-	const changes = await getChangesSince(since, userId);
+	const changes = await getChangesSince(db, since, userId);
 
 	const noteIds = changes.map((n) => n.id);
-	const tagMap = fetchTagsForNotes(noteIds);
-	const attachmentMap = fetchAttachmentsForNotes(noteIds);
+	const tagMap = fetchTagsForNotes(db, noteIds);
+	const attachmentMap = fetchAttachmentsForNotes(db, noteIds);
 	const changesWithTags = changes.map((note) => ({
 		...note,
 		tags: tagMap.get(note.id) ?? [],

static/api/openapi.json

@@ -0,0 +1,796 @@
+{
+  "openapi": "3.1.0",
+  "info": {
+    "title": "Crumbs API",
+    "description": "Auto-generated API spec for crumbs",
+    "version": "0.21.9",
+    "contact": {
+      "name": "Bretzel",
+      "url": "https://bretzel.app"
+    }
+  },
+  "servers": [
+    {
+      "url": "/",
+      "description": "Current instance"
+    }
+  ],
+  "security": [
+    {
+      "sessionCookie": []
+    }
+  ],
+  "paths": {
+    "/api/admin/users": {
+      "get": {
+        "tags": [
+          "Admin"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      },
+      "post": {
+        "tags": [
+          "Admin"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/admin/users/{id}": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "patch": {
+        "tags": [
+          "Admin"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "Admin"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/auth/account": {
+      "delete": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/auth/login": {
+      "post": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/auth/logout": {
+      "post": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/auth/oauth/{provider}": {
+      "parameters": [
+        {
+          "name": "provider",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "get": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/auth/oauth/{provider}/callback": {
+      "parameters": [
+        {
+          "name": "provider",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "get": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/auth/password": {
+      "put": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/auth/profile": {
+      "put": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/auth/sessions": {
+      "get": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/auth/setup": {
+      "post": {
+        "tags": [
+          "Auth"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/mcp": {
+      "post": {
+        "tags": [
+          "Mcp"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      },
+      "get": {
+        "tags": [
+          "Mcp"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "Mcp"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/notes": {
+      "get": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      },
+      "post": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/notes/reorder": {
+      "post": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/notes/{id}": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "get": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      },
+      "patch": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/notes/{id}/attachments": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "get": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      },
+      "post": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      },
+      "patch": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/notes/{id}/collaborators": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "get": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      },
+      "post": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/notes/{id}/versions": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "get": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/notes/{id}/versions/{versionId}": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        },
+        {
+          "name": "versionId",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "get": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/notes/{id}/versions/{versionId}/restore": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        },
+        {
+          "name": "versionId",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "post": {
+        "tags": [
+          "Notes"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/preferences": {
+      "get": {
+        "tags": [
+          "Preferences"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      },
+      "put": {
+        "tags": [
+          "Preferences"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/search": {
+      "get": {
+        "tags": [
+          "Search"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/settings/api-keys": {
+      "get": {
+        "tags": [
+          "Settings"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      },
+      "post": {
+        "tags": [
+          "Settings"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      }
+    },
+    "/api/settings/api-keys/{id}": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "delete": {
+        "tags": [
+          "Settings"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/sync": {
+      "post": {
+        "tags": [
+          "Sync"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        },
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object"
+              }
+            }
+          }
+        }
+      },
+      "get": {
+        "tags": [
+          "Sync"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/tags": {
+      "get": {
+        "tags": [
+          "Tags"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/api/users/search": {
+      "get": {
+        "tags": [
+          "Users"
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    }
+  },
+  "components": {
+    "securitySchemes": {
+      "sessionCookie": {
+        "type": "apiKey",
+        "in": "cookie",
+        "name": "session"
+      }
+    }
+  }
+}

static/site.webmanifest

@@ -1,21 +0,0 @@
-{
-  "name": "Crumbs by Bretzel",
-  "short_name": "Crumbs",
-  "icons": [
-    {
-      "src": "/web-app-manifest-192x192.png",
-      "sizes": "192x192",
-      "type": "image/png",
-      "purpose": "maskable"
-    },
-    {
-      "src": "/web-app-manifest-512x512.png",
-      "sizes": "512x512",
-      "type": "image/png",
-      "purpose": "maskable"
-    }
-  ],
-  "theme_color": "#f9f4ea",
-  "background_color": "#f9f4ea",
-  "display": "standalone"
-}

svelte.config.js

@@ -5,7 +5,10 @@ const config = {
 	kit: {
 		adapter: adapter({
 			out: 'build'
-		})
+		}),
+		serviceWorker: {
+			register: false
+		}
 	}
 };
 

tests/e2e/attachments.spec.ts

@@ -72,7 +72,7 @@ test.describe('Image Attachments', () => {
 		await page.getByTestId('file-input').setInputFiles(TEST_IMAGE_PATH);
 		await expect(page.getByTestId('attachment-thumbnail')).toBeVisible();
 
-		// When the user features the image by clicking the star
+		// When the user features the image
 		await page.getByTestId('attachment-thumbnail').hover();
 		await page.getByTestId('toggle-featured').click();
 
@@ -91,8 +91,6 @@ test.describe('Image Attachments', () => {
 		await page.getByTestId('image-toggle').click();
 		await page.getByTestId('file-input').setInputFiles(TEST_IMAGE_PATH);
 		await expect(page.getByTestId('attachment-thumbnail')).toBeVisible();
-
-		// Feature the image
 		await page.getByTestId('attachment-thumbnail').hover();
 		await page.getByTestId('toggle-featured').click();
 		await page.getByTestId('close-editor-btn').click();
@@ -155,7 +153,7 @@ test.describe('Image Attachments', () => {
 	});
 
 	test('Scenario: Image toggle on new note auto-saves and opens upload panel', async ({ authenticatedPage: page }) => {
-		// When the user opens a new note and clicks the image toggle
+		// When the user opens a new note and enables the image panel
 		await page.getByTestId('new-note-btn').click();
 		await page.getByTestId('note-title-input').fill('Auto-Save Test');
 		await page.getByTestId('image-toggle').click();
@@ -163,10 +161,8 @@ test.describe('Image Attachments', () => {
 		// Then the upload panel is visible (note was auto-saved)
 		await expect(page.getByTestId('image-upload')).toBeVisible();
 
-		// Cleanup
+		// And the note persists in the list after closing
 		await page.getByTestId('close-editor-btn').click();
-
-		// And the note exists in the list
 		await expect(noteCard(page, 'Auto-Save Test')).toBeVisible();
 	});
 });

tests/e2e/auth.spec.ts

@@ -70,10 +70,10 @@ test.describe.serial('Authentication', () => {
 });
 
 test.describe('Multi-user', () => {
-	test('admin can create a new user via API', async ({ authenticatedPage: page }) => {
-		// authenticatedPage fixture already handles setup/login
+	test('Scenario: Admin-created user is registered successfully', async ({ authenticatedPage: page }) => {
+		// Given the admin is authenticated
 
-		// Create a new user via admin API
+		// When the admin creates a new user
 		const response = await page.request.post('/api/admin/users', {
 			data: {
 				email: 'user2@test.com',
@@ -83,6 +83,7 @@ test.describe('Multi-user', () => {
 			}
 		});
 
+		// Then the user is created successfully
 		expect(response.status()).toBe(201);
 	});
 });

tests/e2e/checklist.spec.ts

@@ -1,7 +1,23 @@
 import { test, expect, noteCard } from './helpers/fixtures.js';
+import type { Page } from '@playwright/test';
+
+/** Create a checklist note via UI. Leaves the editor closed. */
+async function createChecklistNote(page: Page, title: string, items: string[]) {
+	await page.getByTestId('new-note-btn').click();
+	await page.getByTestId('note-title-input').fill(title);
+	await page.getByTestId('checklist-toggle').click();
+	for (let i = 0; i < items.length; i++) {
+		await page.getByTestId('checklist-input').nth(i).fill(items[i]);
+		if (i < items.length - 1) {
+			await page.getByTestId('checklist-input').nth(i).press('Enter');
+		}
+	}
+	await page.getByTestId('close-editor-btn').click();
+	await expect(noteCard(page, title)).toBeVisible();
+}
 
 test.describe('Checklist', () => {
-	test('Scenario: Checklist UI replaces editor when checklist mode is enabled', async ({ authenticatedPage: page }) => {
+	test('Scenario: Checklist replaces the rich text editor when enabled', async ({ authenticatedPage: page }) => {
 		// Given the user is creating a new note
 		await page.getByTestId('new-note-btn').click();
 
@@ -15,16 +31,9 @@ test.describe('Checklist', () => {
 		await expect(page.getByTestId('tiptap-editor')).not.toBeVisible();
 	});
 
-	test('Scenario: Checklist item can be added and persisted', async ({ authenticatedPage: page }) => {
-		// When the user creates a checklist note with an item "Buy milk"
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Shopping List');
-		await page.getByTestId('checklist-toggle').click();
-		await page.getByTestId('checklist-input').first().fill('Buy milk');
-		await page.getByTestId('close-editor-btn').click();
-
-		// Then the note appears in the list
-		await expect(page.getByText('Shopping List')).toBeVisible();
+	test('Scenario: Checklist item persists after closing and reopening the note', async ({ authenticatedPage: page }) => {
+		// Given a checklist note with an item "Buy milk" exists
+		await createChecklistNote(page, 'Shopping List', ['Buy milk']);
 
 		// When the user reopens the note
 		await noteCard(page, 'Shopping List').click();
@@ -34,13 +43,9 @@ test.describe('Checklist', () => {
 		await expect(page.getByTestId('checklist-input').first()).toHaveValue('Buy milk');
 	});
 
-	test('Scenario: Checking an item marks it as completed', async ({ authenticatedPage: page }) => {
-		// Given a checklist note with an item "Buy milk"
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Tasks');
-		await page.getByTestId('checklist-toggle').click();
-		await page.getByTestId('checklist-input').first().fill('Buy milk');
-		await page.getByTestId('close-editor-btn').click();
+	test('Scenario: Checked item moves to the done section', async ({ authenticatedPage: page }) => {
+		// Given a checklist note with an item "Buy milk" exists
+		await createChecklistNote(page, 'Tasks', ['Buy milk']);
 
 		// When the user reopens the note and checks the item
 		await noteCard(page, 'Tasks').click();
@@ -50,13 +55,13 @@ test.describe('Checklist', () => {
 		await expect(page.getByTestId('checklist-toggle-done')).toContainText('1 done');
 		await page.getByTestId('close-editor-btn').click();
 
-		// And reopening the note shows the item in the done section (expanded by default)
+		// And the done state persists after reopening
 		await noteCard(page, 'Tasks').click();
 		await expect(page.getByTestId('checklist-done-checkbox').first()).toBeChecked();
 	});
 
-	test('Scenario: New checklist item is added by pressing Enter', async ({ authenticatedPage: page }) => {
-		// Given the user is editing a checklist note
+	test('Scenario: Enter key adds a new checklist item', async ({ authenticatedPage: page }) => {
+		// Given a checklist with one item
 		await page.getByTestId('new-note-btn').click();
 		await page.getByTestId('checklist-toggle').click();
 		await page.getByTestId('checklist-input').first().fill('First item');
@@ -68,46 +73,45 @@ test.describe('Checklist', () => {
 		await expect(page.getByTestId('checklist-input')).toHaveCount(2);
 	});
 
-	test('Scenario: Empty checklist item is removed by pressing Backspace', async ({ authenticatedPage: page }) => {
-		// Given a checklist note with two items
+	test('Scenario: Backspace on empty item removes it from the list', async ({ authenticatedPage: page }) => {
+		// Given a checklist with two items where the second is empty
 		await page.getByTestId('new-note-btn').click();
 		await page.getByTestId('checklist-toggle').click();
 		await page.getByTestId('checklist-input').first().fill('First item');
 		await page.getByTestId('checklist-input').first().press('Enter');
 		await expect(page.getByTestId('checklist-input')).toHaveCount(2);
 
-		// When the user presses Backspace on the empty second item
+		// When the user presses Backspace on the empty item
 		await page.getByTestId('checklist-input').nth(1).press('Backspace');
 
 		// Then only the first item remains
 		await expect(page.getByTestId('checklist-input')).toHaveCount(1);
 	});
 
-	test('Scenario: Completed checklist items are separated and can be expanded', async ({ authenticatedPage: page }) => {
-		// Given a checklist note with a completed item and an uncompleted item
+	test('Scenario: Completed items are separated into a done section', async ({ authenticatedPage: page }) => {
+		// Given a checklist note with two items
 		await page.getByTestId('new-note-btn').click();
 		await page.getByTestId('note-title-input').fill('Hide Done Test');
 		await page.getByTestId('checklist-toggle').click();
 		await page.getByTestId('checklist-input').first().fill('Done task');
 		await page.getByTestId('checklist-input').first().press('Enter');
 		await page.getByTestId('checklist-input').nth(1).fill('Pending task');
+
+		// When the user completes the first item
 		await page.getByTestId('checklist-checkbox').first().click();
 
-		// Then the completed item is separated from the active list
+		// Then only the pending item remains in the active list
 		await expect(page.getByTestId('checklist-input')).toHaveCount(1);
 		await expect(page.getByTestId('checklist-input').first()).toHaveValue('Pending task');
 
-		// And the "done" toggle shows the count
-		await expect(page.getByTestId('checklist-toggle-done')).toBeVisible();
+		// And the done section shows the completed item
 		await expect(page.getByTestId('checklist-toggle-done')).toContainText('1 done');
-
-		// Then the completed items are shown in the done section (expanded by default)
 		await expect(page.getByTestId('checklist-done-section')).toBeVisible();
 		await expect(page.getByTestId('checklist-done-section')).toContainText('Done task');
 	});
 
-	test('Scenario: Switching back from checklist mode restores the text area', async ({ authenticatedPage: page }) => {
-		// Given the user has checklist mode enabled
+	test('Scenario: Disabling checklist mode restores the rich text editor', async ({ authenticatedPage: page }) => {
+		// Given checklist mode is enabled on a new note
 		await page.getByTestId('new-note-btn').click();
 		await page.getByTestId('checklist-toggle').click();
 		await expect(page.getByTestId('checklist')).toBeVisible();

tests/e2e/formatting.spec.ts

@@ -1,5 +1,5 @@
 import { test, expect, noteCard } from './helpers/fixtures.js';
-import type { Page, Locator } from '@playwright/test';
+import type { Page } from '@playwright/test';
 
 /** Run a TipTap command chain via the exposed editor instance on the DOM element */
 async function runTiptapCommand(page: Page, commandFn: string) {
@@ -38,54 +38,6 @@ test.describe('Rich text formatting', () => {
 		await expect(page.getByTestId('note-content-input')).toHaveValue('hello **world**');
 	});
 
-	test('Scenario: Italic shortcut formats selected text in the editor', async ({ authenticatedPage: page }) => {
-		// Given the user is editing a new note with content "hello world"
-		await page.getByTestId('new-note-btn').click();
-		await typeViaMarkdown(page, 'hello world');
-		const editor = page.getByTestId('tiptap-editor').locator('.tiptap');
-
-		// When the user selects "world" and applies italic formatting
-		await runTiptapCommand(page, 'editor.chain().focus().setTextSelection({from:7,to:12}).toggleItalic().run()');
-
-		// Then the selected text appears italic in the editor
-		await expect(editor.locator('em')).toHaveText('world');
-	});
-
-	test('Scenario: Formatting toolbar applies bold to selected text', async ({ authenticatedPage: page }) => {
-		// Given the user is editing a note
-		await page.getByTestId('new-note-btn').click();
-		await typeViaMarkdown(page, 'hello world');
-
-		// When the user selects "world" and clicks the bold button
-		await runTiptapCommand(page, 'editor.chain().focus().setTextSelection({from:7,to:12}).run()');
-		await page.getByTestId('format-bold').click();
-
-		// Then the selected text appears bold
-		const editor = page.getByTestId('tiptap-editor').locator('.tiptap');
-		await expect(editor.locator('strong')).toHaveText('world');
-	});
-
-	test('Scenario: Formatting toolbar is always visible when editing', async ({ authenticatedPage: page }) => {
-		// When the user opens a new note
-		await page.getByTestId('new-note-btn').click();
-
-		// Then the formatting toolbar is visible immediately
-		await expect(page.getByTestId('formatting-toolbar')).toBeVisible();
-	});
-
-	test('Scenario: Inline code shortcut wraps selected text', async ({ authenticatedPage: page }) => {
-		// Given the user is editing a note with content "use npm install"
-		await page.getByTestId('new-note-btn').click();
-		await typeViaMarkdown(page, 'use npm install');
-		const editor = page.getByTestId('tiptap-editor').locator('.tiptap');
-
-		// When the user selects "npm install" and applies code formatting
-		await runTiptapCommand(page, 'editor.chain().focus().setTextSelection({from:5,to:16}).toggleCode().run()');
-
-		// Then the selected text appears as inline code
-		await expect(editor.locator('code')).toHaveText('npm install');
-	});
-
 	test('Scenario: Existing note shows rich text in TipTap editor', async ({ authenticatedPage: page }) => {
 		// Given a note with bold markdown content exists
 		await page.getByTestId('new-note-btn').click();

tests/e2e/helpers/coverage.ts

@@ -0,0 +1,24 @@
+import { writeFileSync, mkdirSync } from 'fs';
+import { join } from 'path';
+import type { Page } from '@playwright/test';
+
+const COVERAGE_DIR = join(process.cwd(), 'coverage', 'e2e', 'raw');
+
+let counter = 0;
+
+/**
+ * Collect Istanbul coverage data from the browser page.
+ * The vite-plugin-istanbul injects `window.__coverage__` when COVERAGE=true.
+ */
+export async function collectCoverage(page: Page, testTitle: string) {
+	if (process.env.VITE_COVERAGE !== 'true') return;
+
+	const coverage = await page.evaluate(() => (window as any).__coverage__);
+	if (!coverage) return;
+
+	mkdirSync(COVERAGE_DIR, { recursive: true });
+
+	const safeName = testTitle.replace(/[^a-zA-Z0-9-_]/g, '_');
+	const filename = `coverage-${safeName}-${counter++}-${Date.now()}.json`;
+	writeFileSync(join(COVERAGE_DIR, filename), JSON.stringify(coverage));
+}

tests/e2e/helpers/fixtures.ts

@@ -1,9 +1,14 @@
 import { test as base, expect, type Page, type Locator } from '@playwright/test';
+import { collectCoverage } from './coverage';
 
 const TEST_EMAIL = 'admin@test.com';
 const TEST_PASSWORD = 'testpassword123';
 const TEST_DISPLAY_NAME = 'Test Admin';
 
+const COLLAB_EMAIL = 'collab@test.com';
+const COLLAB_PASSWORD = 'collabpass123';
+const COLLAB_NAME = 'Collaborator User';
+
 /** Find a specific note card by its title text */
 export function noteCard(page: Page, title: string): Locator {
 	return page.locator('[data-testid="note-card"]', { hasText: title });
@@ -12,11 +17,39 @@ export function noteCard(page: Page, title: string): Locator {
 /**
  * Extended test fixture that handles setup/auth.
  */
-export const test = base.extend<{ authenticatedPage: Page }>({
-	authenticatedPage: async ({ page }, use) => {
+export const test = base.extend<{ authenticatedPage: Page; collabPage: Page }>({
+	authenticatedPage: async ({ page }, use, testInfo) => {
 		// Setup: create user and login
 		await setupAndLogin(page);
 		await use(page);
+		// Teardown: collect coverage data from the browser
+		await collectCoverage(page, testInfo.title);
+	},
+	collabPage: async ({ browser, authenticatedPage }, use, testInfo) => {
+		// Create collab user via admin API (idempotent)
+		const res = await authenticatedPage.request.post('/api/admin/users', {
+			data: {
+				email: COLLAB_EMAIL,
+				displayName: COLLAB_NAME,
+				password: COLLAB_PASSWORD,
+				role: 'user'
+			}
+		});
+		// Ignore 409 — user already exists
+
+		// Login as collaborator in a new browser context
+		const context = await browser.newContext();
+		const page = await context.newPage();
+		await page.goto('/login');
+		await page.getByTestId('email-input').fill(COLLAB_EMAIL);
+		await page.getByTestId('password-input').fill(COLLAB_PASSWORD);
+		await page.getByTestId('login-btn').click();
+		await page.waitForURL('/');
+		await page.waitForLoadState('networkidle');
+		await use(page);
+		// Teardown: collect coverage data from the browser
+		await collectCoverage(page, testInfo.title + '-collab');
+		await context.close();
 	}
 });
 
@@ -57,4 +90,17 @@ export async function setupAndLogin(page: Page) {
 	await page.waitForLoadState('networkidle');
 }
 
-export { expect, TEST_EMAIL, TEST_PASSWORD };
+/** Create a note via the UI and close the editor. Use in Given steps for state setup. */
+export async function createNote(page: Page, title: string, content?: string) {
+	await page.getByTestId('new-note-btn').click();
+	await page.getByTestId('note-title-input').fill(title);
+	if (content) {
+		const editor = page.getByTestId('tiptap-editor').locator('.tiptap');
+		await editor.click();
+		await editor.pressSequentially(content);
+	}
+	await page.getByTestId('close-editor-btn').click();
+	await expect(noteCard(page, title)).toBeVisible();
+}
+
+export { expect, TEST_EMAIL, TEST_PASSWORD, COLLAB_EMAIL, COLLAB_PASSWORD, COLLAB_NAME };

tests/e2e/notes-crud.spec.ts

@@ -1,14 +1,9 @@
-import { test, expect, noteCard } from './helpers/fixtures.js';
+import { test, expect, noteCard, createNote } from './helpers/fixtures.js';
 
 test.describe('Notes CRUD', () => {
 	test('Scenario: New note appears in the notes list after creation', async ({ authenticatedPage: page }) => {
 		// When the user creates a note titled "My First Note" with content "Hello world!"
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('My First Note');
-		const editor = page.getByTestId('tiptap-editor').locator('.tiptap');
-		await editor.click();
-		await editor.pressSequentially('Hello world!');
-		await page.getByTestId('close-editor-btn').click();
+		await createNote(page, 'My First Note', 'Hello world!');
 
 		// Then the note is visible in the notes list
 		await expect(noteCard(page, 'My First Note')).toBeVisible();
@@ -16,12 +11,7 @@ test.describe('Notes CRUD', () => {
 
 	test('Scenario: Edited note title is reflected in the notes list', async ({ authenticatedPage: page }) => {
 		// Given a note titled "Original Title" exists
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Original Title');
-		const editor = page.getByTestId('tiptap-editor').locator('.tiptap');
-		await editor.click();
-		await editor.pressSequentially('Original content');
-		await page.getByTestId('close-editor-btn').click();
+		await createNote(page, 'Original Title', 'Original content');
 
 		// When the user changes the title to "Updated Title"
 		await noteCard(page, 'Original Title').click();
@@ -35,9 +25,7 @@ test.describe('Notes CRUD', () => {
 
 	test('Scenario: Trashed note disappears from the main view', async ({ authenticatedPage: page }) => {
 		// Given a note titled "Delete Me" exists
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Delete Me');
-		await page.getByTestId('close-editor-btn').click();
+		await createNote(page, 'Delete Me');
 
 		// When the user trashes the note
 		const card = noteCard(page, 'Delete Me');
@@ -47,23 +35,4 @@ test.describe('Notes CRUD', () => {
 		// Then the note is no longer visible
 		await expect(page.getByText('Delete Me')).not.toBeVisible();
 	});
-
-	test('Scenario: Bold formatting applies to selected text in the editor', async ({ authenticatedPage: page }) => {
-		// Given the user is editing a note with content "hello world"
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('markdown-toggle').click();
-		await page.getByTestId('note-content-input').fill('hello world');
-		await page.getByTestId('markdown-toggle').click();
-		const editor = page.getByTestId('tiptap-editor').locator('.tiptap');
-
-		// When the user selects "world" and applies bold formatting
-		await page.getByTestId('tiptap-editor').evaluate((el) => {
-			const ed = (el as any).__tiptapEditor;
-			if (!ed) return;
-			ed.chain().focus().setTextSelection({ from: 7, to: 12 }).toggleBold().run();
-		});
-
-		// Then the selected text appears bold in the editor
-		await expect(editor.locator('strong')).toHaveText('world');
-	});
 });

tests/e2e/offline.spec.ts

@@ -1,7 +1,7 @@
-import { test, expect, noteCard } from './helpers/fixtures.js';
+import { test, expect, noteCard, createNote } from './helpers/fixtures.js';
 
 test.describe('Offline Support', () => {
-	test('Scenario: Sync status is visible to the user', async ({ authenticatedPage: page }) => {
+	test('Scenario: Sync status indicator is visible on the main page', async ({ authenticatedPage: page }) => {
 		// Given the user is authenticated
 		// Then the sync status indicator is displayed
 		await expect(page.getByTestId('sync-indicator')).toBeVisible();
@@ -9,9 +9,7 @@ test.describe('Offline Support', () => {
 
 	test('Scenario: Created note is immediately visible in the notes list', async ({ authenticatedPage: page }) => {
 		// When the user creates a note titled "Offline Test Note"
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Offline Test Note');
-		await page.getByTestId('close-editor-btn').click();
+		await createNote(page, 'Offline Test Note');
 
 		// Then the note appears in the list
 		await expect(page.getByText('Offline Test Note')).toBeVisible();
@@ -19,10 +17,7 @@ test.describe('Offline Support', () => {
 
 	test('Scenario: Edited note persists in the UI when offline', async ({ authenticatedPage: page }) => {
 		// Given a note titled "Offline Edit" exists
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Offline Edit');
-		await page.getByTestId('close-editor-btn').click();
-		await expect(page.getByText('Offline Edit')).toBeVisible();
+		await createNote(page, 'Offline Edit');
 
 		// When the network is unavailable
 		await page.context().setOffline(true);
@@ -33,10 +28,10 @@ test.describe('Offline Support', () => {
 		await page.getByTestId('note-title-input').fill('Offline Edited');
 		await page.getByTestId('close-editor-btn').click();
 
-		// Then the note "Offline Edited" appears in the list
+		// Then the updated note appears in the list
 		await expect(page.getByText('Offline Edited')).toBeVisible();
 
-		// And a "Saved offline" toast is shown
+		// And an offline save confirmation is shown
 		await expect(page.getByText('Saved offline')).toBeVisible();
 	});
 
@@ -49,28 +44,30 @@ test.describe('Offline Support', () => {
 		await page.getByTestId('note-title-input').fill('Offline New');
 		await page.getByTestId('close-editor-btn').click();
 
-		// Then the note "Offline New" appears in the list
+		// Then the note appears in the list
 		await expect(page.getByText('Offline New')).toBeVisible();
 
-		// And a "Saved offline" toast is shown
+		// And an offline save confirmation is shown
 		await expect(page.getByText('Saved offline')).toBeVisible();
 	});
 
 	test('Scenario: Offline note survives a page reload after reconnecting', async ({ authenticatedPage: page }) => {
-		// When the network is unavailable
+		// Given the network is unavailable
 		await page.context().setOffline(true);
 
-		// And the user creates a note titled "Survive Reload"
+		// And a note titled "Survive Reload" is created offline
 		await page.getByTestId('new-note-btn').click();
 		await page.getByTestId('note-title-input').fill('Survive Reload');
 		await page.getByTestId('close-editor-btn').click();
 		await expect(page.getByText('Survive Reload')).toBeVisible();
 
-		// When the network is restored (triggers 'online' event + navigator.onLine = true)
+		// When the network is restored and sync completes
+		const syncResponse = page.waitForResponse((resp) => resp.url().includes('/api/sync'));
 		await page.context().setOffline(false);
-
-		// And the sync completes
-		await page.waitForResponse('**/api/sync');
+		// Manually dispatch the online event as a safety net — in CI/headless
+		// environments, setOffline(false) doesn't always emit it reliably
+		await page.evaluate(() => window.dispatchEvent(new Event('online')));
+		await syncResponse;
 
 		// And the user reloads the page
 		await page.reload();
@@ -81,27 +78,19 @@ test.describe('Offline Support', () => {
 
 	test('Scenario: Notes load from local cache when the API is unavailable', async ({ authenticatedPage: page }) => {
 		// Given a note titled "Cached Note" exists
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Cached Note');
-		await page.getByTestId('close-editor-btn').click();
-		await expect(page.getByText('Cached Note')).toBeVisible();
+		await createNote(page, 'Cached Note');
 
-		// When the API is unavailable (simulating service worker serving cached shell)
+		// When the API becomes unavailable and the page is reloaded
 		await page.route('**/api/**', (route) => route.abort());
-
-		// And the user reloads the page
 		await page.reload();
 
-		// Then the note is still visible (loaded from IDB cache)
+		// Then the note is still visible from the local cache
 		await expect(page.getByText('Cached Note')).toBeVisible();
 	});
 
 	test('Scenario: Trashed note disappears from the list when offline', async ({ authenticatedPage: page }) => {
 		// Given a note titled "Offline Trash" exists
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Offline Trash');
-		await page.getByTestId('close-editor-btn').click();
-		await expect(page.getByText('Offline Trash')).toBeVisible();
+		await createNote(page, 'Offline Trash');
 
 		// When the network is unavailable
 		await page.context().setOffline(true);
@@ -114,7 +103,7 @@ test.describe('Offline Support', () => {
 		// Then the note is no longer visible
 		await expect(page.getByText('Offline Trash')).not.toBeVisible();
 
-		// And a "Saved offline" toast is shown
+		// And an offline save confirmation is shown
 		await expect(page.getByText('Saved offline')).toBeVisible();
 	});
 });

tests/e2e/organization.spec.ts

@@ -1,11 +1,9 @@
-import { test, expect, noteCard } from './helpers/fixtures.js';
+import { test, expect, noteCard, createNote } from './helpers/fixtures.js';
 
 test.describe('Organization Features', () => {
 	test('Scenario: Pinned note appears under the Pinned section', async ({ authenticatedPage: page }) => {
 		// Given a note titled "Pin Me" exists
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Pin Me');
-		await page.getByTestId('close-editor-btn').click();
+		await createNote(page, 'Pin Me');
 
 		// When the user pins the note
 		const pinCard = noteCard(page, 'Pin Me');
@@ -18,9 +16,7 @@ test.describe('Organization Features', () => {
 
 	test('Scenario: Archived note is removed from the main view', async ({ authenticatedPage: page }) => {
 		// Given a note titled "Archive Me" exists
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Archive Me');
-		await page.getByTestId('close-editor-btn').click();
+		await createNote(page, 'Archive Me');
 
 		// When the user archives the note
 		const archiveCard = noteCard(page, 'Archive Me');
@@ -31,58 +27,42 @@ test.describe('Organization Features', () => {
 		await expect(page.getByText('Archive Me')).not.toBeVisible();
 	});
 
-	test('Scenario: Note color is changed via the color picker', async ({ authenticatedPage: page }) => {
-		// Given the user is creating a note titled "Colored Note"
+	test('Scenario: Note card reflects the selected color', async ({ authenticatedPage: page }) => {
+		// Given the user is creating a new note
 		await page.getByTestId('new-note-btn').click();
 		await page.getByTestId('note-title-input').fill('Colored Note');
 
-		// When the user sets the note color to "Coral"
+		// When the user selects the "Coral" color
 		await page.getByTestId('color-picker-toggle').click();
 		await page.getByTestId('color-coral').click();
 		await page.getByTestId('close-editor-btn').click();
 
-		// Then the note is saved and visible in the notes list
+		// Then the note is visible in the notes list
 		await expect(noteCard(page, 'Colored Note')).toBeVisible();
 	});
 
 	test('Scenario: Filtering by tag shows only matching notes', async ({ authenticatedPage: page }) => {
 		// Given a note tagged #important and an untagged note exist
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Tagged Note');
-		const editor = page.getByTestId('tiptap-editor').locator('.tiptap');
-		await editor.click();
-		await editor.pressSequentially('This is #important');
-		await page.getByTestId('close-editor-btn').click();
-
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Untagged Note');
-		await page.getByTestId('close-editor-btn').click();
+		await createNote(page, 'Tagged Note', 'This is #important');
+		await createNote(page, 'Untagged Note');
 
 		// When the user filters by the #important tag
 		const tagChip = page.getByTestId('tag-filter').getByTestId('tag-chip').filter({ hasText: '#important' });
-		if (await tagChip.isVisible()) {
-			await tagChip.click();
+		await expect(tagChip).toBeVisible();
+		await tagChip.click();
 
-			// Then only the tagged note is visible
-			await expect(page.getByText('Tagged Note').first()).toBeVisible();
-		}
+		// Then only the tagged note is visible
+		await expect(page.getByText('Tagged Note').first()).toBeVisible();
 	});
 });
 
 test.describe('Note Sorting', () => {
 	test('Scenario: Most recently updated note appears first', async ({ authenticatedPage: page }) => {
-		// Given two notes exist with different update times
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Sort-First');
-		await page.getByTestId('close-editor-btn').click();
-		await expect(noteCard(page, 'Sort-First')).toBeVisible();
+		// Given two notes exist created at different times
+		await createNote(page, 'Sort-First');
+		await createNote(page, 'Sort-Second');
 
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Sort-Second');
-		await page.getByTestId('close-editor-btn').click();
-		await expect(noteCard(page, 'Sort-Second')).toBeVisible();
-
-		// Then Sort-Second (most recently updated) appears before Sort-First
+		// Then the most recently created note appears before the older one
 		const sortFirst = noteCard(page, 'Sort-First');
 		const sortSecond = noteCard(page, 'Sort-Second');
 		const firstBox = await sortSecond.boundingBox();

tests/e2e/search.spec.ts

@@ -1,19 +1,13 @@
-import { test, expect, noteCard } from './helpers/fixtures.js';
+import { test, expect, createNote } from './helpers/fixtures.js';
 
 test.describe('Search', () => {
 	test('Scenario: Searching by title returns the matching note', async ({ authenticatedPage: page }) => {
 		// Given a note titled "Grocery Errands" and a note titled "Work Meeting" exist
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Grocery Errands');
-		await page.getByTestId('close-editor-btn').click();
-
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Work Meeting');
-		await page.getByTestId('close-editor-btn').click();
+		await createNote(page, 'Grocery Errands');
+		await createNote(page, 'Work Meeting');
 
 		// When the user searches for "Grocery"
 		await page.getByTestId('search-input').fill('Grocery');
-		await page.waitForTimeout(500);
 
 		// Then "Grocery Errands" is visible in the results
 		await expect(page.getByText('Grocery Errands')).toBeVisible();
@@ -21,16 +15,10 @@ test.describe('Search', () => {
 
 	test('Scenario: Searching by content returns the matching note', async ({ authenticatedPage: page }) => {
 		// Given a note titled "Recipe" with content "Pasta with tomato sauce" exists
-		await page.getByTestId('new-note-btn').click();
-		await page.getByTestId('note-title-input').fill('Recipe');
-		const editor = page.getByTestId('tiptap-editor').locator('.tiptap');
-		await editor.click();
-		await editor.pressSequentially('Pasta with tomato sauce');
-		await page.getByTestId('close-editor-btn').click();
+		await createNote(page, 'Recipe', 'Pasta with tomato sauce');
 
 		// When the user searches for "tomato"
 		await page.getByTestId('search-input').fill('tomato');
-		await page.waitForTimeout(500);
 
 		// Then "Recipe" is visible in the results
 		await expect(page.getByText('Recipe')).toBeVisible();
@@ -39,7 +27,6 @@ test.describe('Search', () => {
 	test('Scenario: Searching for a nonexistent term yields no results', async ({ authenticatedPage: page }) => {
 		// When the user searches for a term that matches nothing
 		await page.getByTestId('search-input').fill('xyznonexistent');
-		await page.waitForTimeout(500);
 
 		// Then no notes are displayed
 		await expect(page.getByTestId('note-card')).toHaveCount(0);