fix: address PR review feedback

- Add noreferrer to rel attribute to prevent Referer header leaks
- Strip newlines from pasted text to prevent checklist corruption
- Add aria-placeholder for screen reader accessibility
- Dismiss LinkPopover on scroll/resize
- Stop keydown propagation on links in NoteCard preview

static/api/openapi.json

@@ -3,7 +3,7 @@
   "info": {
     "title": "Crumbs API",
     "description": "Auto-generated API spec for crumbs",
-    "version": "0.24.0",
+    "version": "0.27.1",
     "contact": {
       "name": "Bretzel",
       "url": "https://bretzel.app"