Changeset 0.17.2 (#77)

CHANGELOG.md

@@ -2,6 +2,71 @@
 
 All notable changes to Chat Switchboard.
 
+## [0.17.2] — 2026-02-28
+
+### Added
+- **CodeMirror 6 integration.** Rich editor infrastructure compiled at Docker
+  build time via esbuild (IIFE bundle, ~295KB min / ~90KB gzip). Two factory
+  functions exposed on `window.CM`:
+  - `CM.chatInput()` — Markdown-mode editor for the chat input with
+    auto-growing height, Enter=send / Shift+Enter=newline, spell check, and
+    WYSIWYG fenced code block decorations (visual container with monospace
+    font and accent border, matching claude.ai UX).
+  - `CM.codeEditor()` — Full-featured code editor for admin extension panel
+    with line numbers, bracket matching, search/replace, fold gutter, and 10
+    bundled language modes (Markdown, JavaScript, JSON, SQL, HTML, CSS, YAML,
+    Go, Python, Rust).
+- **Graceful degradation.** All CM6 integration points check `window.CM`
+  availability. If the bundle fails to load, the app falls back to native
+  `<textarea>` with zero breakage.
+- **Dark/Light/System theme toggle.** New appearance setting with three
+  modes. Light theme overrides all CSS variables via `[data-theme="light"]`
+  selector. System mode tracks `prefers-color-scheme` media query in real
+  time. Theme changes emit `theme.changed` on the EventBus; CM6 editors
+  toggle `oneDark` syntax theme via compartment reconfiguration.
+- **Vim/Emacs keybinding preference.** Editor keybinding mode (Standard /
+  Vim / Emacs) configurable in appearance settings. Applies to code editors
+  and extension editors only — chat input always uses standard keybindings.
+  Live-switchable on already-open editors via `keymap.changed` event.
+  Bundled statically (~40KB for both modes).
+- **Inline code shortcut.** Ctrl/Cmd+E wraps selection in backticks or
+  inserts an empty inline code pair with cursor between them.
+- **Code block shortcut.** Typing ` ``` ` at the start of a line expands
+  to a fenced code block with cursor positioned inside. The decoration plugin
+  renders code blocks with a styled visual container in the chat input.
+- **CI path-based change detection.** New `detect-changes` job classifies
+  changed files into frontend/backend/infra/docs buckets. Test jobs skip
+  when irrelevant (FE-only changes skip Go tests, docs-only changes skip
+  all tests and deploy). Tags always run the full pipeline.
+
+### Changed
+- Docker build pipeline: both `Dockerfile.frontend` and unified `Dockerfile`
+  now include a `cm6-build` stage (Node 20 Alpine → esbuild → IIFE bundle).
+- `ChatInput` abstraction in `chat.js` replaces direct textarea access
+  across 7 callsites (`chat.js`, `tokens.js`, `attachments.js`).
+- Extension editor in `admin-handlers.js` uses `CM.codeEditor()` with JSON
+  and JavaScript modes, replacing bare `<textarea>` with manual Tab handler.
+- Service worker excludes `/vendor/codemirror/` from cache (version-busted).
+- Debug state snapshot includes CM6 version and language list.
+- `ARCHITECTURE.md` updated to v0.17 reflecting CM6 integration, SQLite
+  dual-driver, modular frontend file structure, and theme system.
+- CI pipeline header updated to v0.17.2 with path gating documentation.
+- `build-editor.sh` falls back to `npm install` if `package-lock.json`
+  is missing (belt-and-suspenders for local dev).
+
+### Fixed
+- **App initialization crash.** `Events.publish` (nonexistent) → `Events.emit`
+  (correct API). The unhandled exception during `initAppearance()` killed
+  `initListeners()`, leaving the entire app half-initialized — settings modal
+  unclosable, keyboard shortcuts unwired, paste handlers missing.
+- **Cursor invisible in dark and light mode.** CM6 cursor used `--accent`
+  color (low contrast on both themes). Switched to `--text` for consistent
+  visibility. Added explicit `borderLeftWidth: 2px`.
+- **Placeholder text offset.** Double padding between `.cm-editor` wrapper
+  (12px) and `.cm-content` (8px) pushed placeholder 20px below expected
+  position. Zeroed `.cm-content` padding — wrapper is the single source of
+  truth.
+
 ## [0.17.1] — 2026-02-27
 
 ### Added