Frederic CabassutandClaude Opus 5 51dd844f96 feat(wu-001): add password generator and reset-eligibility utilities
Groundwork for issue #77 (admin cannot reset other users' passwords).
Two pure, colocated-tested modules shared by the API route and the
settings UI that follow.

password.ts — generatePassword() over a charset pinned at exactly 64
characters. 64 is a power of two, so nanoid's customAlphabet takes its
exactly-uniform masking path (256 % 64 === 0) rather than the rejection
branch; 120 bits of entropy at the default length of 20. Visually
ambiguous characters (0 O o 1 l I) are excluded so a password survives
being read aloud or retyped. Class coverage is guaranteed by discarding
and regenerating a whole password that is missing a group, which stays
uniform over exactly the set of valid passwords — rather than forcing
characters into positions and shuffling, which would need its own
unbiased index source.

auth-methods.ts — canResetPassword() and passwordResetBlockedReason(),
the single source of truth for eligibility so the endpoint and the
component cannot drift. Password login is gated on authProvider
(verifyPassword matches only rows where it equals 'password'), so
writing a hash for any other provider stores a credential that can
never be used to sign in.

The reason lookup is a Map, not an object literal: an object inherits
Object.prototype, so a lookup for 'toString' or '__proto__' resolves to
an inherited member and the nullish fallback never fires — returning a
function where the signature promises string | null. A Map has no such
keys, so totality holds by construction instead of by a guard a later
refactor could drop.

DoD items verified:
- [x] 1. generatePassword() returns 20 chars; explicit length honoured
- [x] 2. always >=1 lowercase, uppercase, digit and symbol
- [x] 3. never contains 0 O o 1 l I
- [x] 4. randomness from nanoid customAlphabet; no Math.random
- [x] 5. throws for length < 8 (the server minimum)
- [x] 6. retry bounded at 100 with an unconditional throw (inspection)
- [x] 7. canResetPassword true only for 'password'
- [x] 8. totality: every blocked input yields a non-empty string
- [x] 9. exact reason copy per provider; null when allowed
- [x] 10. colocated tests pass

Verified independently by the orchestrator: pnpm check 0 errors /
14 pre-existing warnings; pnpm test:unit 306 passed / 26 files (from
288 / 24); coverage 45.52 lines, 45.52 statements, 54.01 functions,
84.87 branches — every metric above both its .coverage-thresholds.json
floor and the previous baseline, new files at 100%.

Reviewed-by: adversarial-review (PASS, second reviewer; first found a
prototype-chain totality violation, since fixed and re-reviewed fresh)

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RbqJcFofZSbhbGwUwZP3wU
2026-08-18 12:31:12 +02:00
2026-08-05 08:57:08 +00:00
2026-08-05 08:57:08 +00:00
2026-03-20 22:58:39 +01:00

CI License: MIT Version Docker

Crumbs logo

Crumbs by Bretzel

A self-hostable, offline-first note-taking app that respects your privacy. Part of the Bretzel app universe.

Crumbs notes grid view

Install

docker compose up -d

Open http://localhost:3000 and create your admin account on first visit.

With SSO (optional)

# docker-compose.yml
services:
  crumbs:
    image: ghcr.io/bretzel-app/crumbs:latest
    ports:
      - "3000:3000"
    volumes:
      - crumbs-data:/data
    environment:
      - ORIGIN=https://notes.example.com
      - AUTH_OIDC_ISSUER=https://authentik.example.com/application/o/crumbs/
      - AUTH_OIDC_CLIENT_ID=your-client-id
      - AUTH_OIDC_CLIENT_SECRET=your-client-secret
      - AUTH_OIDC_DISPLAY_NAME=Authentik
    restart: unless-stopped

volumes:
  crumbs-data:

Google and GitHub OAuth are also supported. See 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):

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 for details.

Manual (Node.js)

git clone <repo-url> crumbs && cd crumbs
pnpm install
pnpm build
DATABASE_URL=./data/crumbs.db ORIGIN=http://localhost:3000 node build

Development

pnpm install
pnpm dev

Run make help to see all available commands, or use pnpm directly:

pnpm test          # Unit + E2E tests
pnpm check         # Type checking
pnpm build         # Production build

Features

  • 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 deployment with a single command

See docs/FEATURES.md for detailed feature documentation.

Tech Stack

Layer Technology
Framework SvelteKit 2 (Svelte 5 runes)
Language TypeScript (strict)
UI Tailwind CSS 4
Database SQLite (better-sqlite3) + Drizzle ORM
Client DB IndexedDB (idb)
Sync LWW CRDTs
Auth Argon2 + session cookies
Testing Vitest + Playwright
Container Docker (multi-stage)
CI/CD GitHub Actions

Documentation

Document Description
Features Detailed feature list and behavior
Architecture Local-first sync design, tech rationale, DB schema
Auth Password auth, OAuth/SSO setup (Authentik, Keycloak, etc.)
Deployment Docker, Node.js, reverse proxy, backups, env vars
API REST API reference (auto-generated)
Contributing How to contribute
Security Vulnerability reporting policy
Changelog Release history

CI/CD

  • CI — lint, type check, unit tests, E2E tests, Docker build on every push/PR
  • Release — builds and pushes Docker image on v* tags

Configure registry via GitHub Secrets: REGISTRY_URL, REGISTRY_USER, REGISTRY_TOKEN.

License

MIT

Languages
TypeScript 68.5%
Svelte 25.1%
HTML 2.7%
CSS 2.7%
Shell 0.5%
Other 0.5%