Description

After recent editor-related changes, the editor has become unstable and difficult to use.

There are three critical regressions affecting the core writing experience:

1. Cursor unexpectedly jumps to the start/left of the block
2. @ note mentions are not working
3. / slash commands are not triggering

These issues make continuous writing unreliable and break core editor functionality.

Expected Behavior

• Cursor remains stable while typing
• Typing @:
  • Opens the note mention menu
  • Filters notes by title
  • Inserts a reference using noteId
  • Should show the metion like @xyz exactly and in blue color and clickable and when clicked will take to that note.
• Typing /:
  • Opens the SlashMenu
  • Allows block type insertion (existing behavior)

Actual Behavior

• Cursor jumps to the beginning of the block while typing
• @ does nothing (no menu, no filtering)
• / does nothing (SlashMenu does not open)
• Editor becomes frustrating to use for longer writing sessions

Suspected Causes

Likely related to recent changes in:

• editor/ui/Block.tsx
• contentEditable rendering logic
• Focus / blur handling
• Conditional rendering for note mentions
• Keyboard event interception

Possible causes include:

• DOM node replacement causing caret position loss
• Mention rendering switching between focused/unfocused states
• Keyboard events being swallowed by mention logic
• Conflicts between mention menu and slash menu listeners

Files to Investigate

• editor/ui/Block.tsx
• editor/ui/Editor.tsx
• editor/ui/SlashMenu.tsx
• Note mention menu implementation
• Any recent changes touching:
  • onInput
  • onKeyDown
  • contentEditable
  • innerText / innerHTML

Steps to Reproduce

1. Open any note
2. Click into the editor
3. Start typing
   → Cursor jumps to the beginning
4. Type @
   → No mention menu appears
5. Type /
   → Slash menu does not open

Environment

• App: Pulm (local-first notes app)
• Platform: Web (Tauri planned later)
• Storage: localStorage
• Branch: dev
• Browser: Chromium-based (reproducible across browsers)

Severity

High / Blocking

This impacts the core editor UX and should be resolved before further feature development or desktop packaging.

Development Notes

Branch Policy

All development should happen on the dev branch.

- Do NOT push directly to `main`
- Create feature branches from `dev`
- Open pull requests targeting `dev`
- `main` is reserved for stable releases only