Create-from-mention [CT-923] [CT-924]

[bfollington]

• Fix enter-to-choose-completion
• Create new note.tsx instances when mentioning a new title
• Extend autolayout for side panels
• Catch Cmd/Ctrl+S and prevent browser default

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Summary by cubic

Create notes directly from [[mentions]] and add left/right side panels around content to improve the note + chat workflow. The editor also handles completion and save shortcuts better.

• New Features

  • Create-from-mention: when a mention has no match, choose “Create” (or press Enter/Cmd/Ctrl+Click) to emit backlink-create; a new Note/Chatbot Note is created and we navigate to it.
  • Backlinks: Note now computes backlinks from allCharms and exposes mentioned/backlinks; the UI shows both with one-click navigation.
  • Layout: ct-autolayout adds left/right slots with desktop toggles and mobile tabs (left | content | right), plus leftTabName/rightTabName; used by the new chatbot-note-composed pattern to wrap Note + Chat.
  • Editor: intercept Cmd/Ctrl+S to prevent the browser’s save dialog.

• Bug Fixes

  • Pressing Enter now accepts the selected autocomplete item in ct-code-editor.

[linear]

CT-923 `ct-code-editor` features

[linear]

CT-924 Integrate `chatbot-list-view.tsx` with `chatbot-note.tsx`