feat: deliver P2 v0.2.0 with unified editor, search, and snapshots

Implement schema v2 migration, outline/setting/inspiration CRUD, unified TipTap editing, reference panel with mentions, FTS global search, chapter version history, writing landmarks, word frequency analysis, light theme contrast fixes, and full unit/E2E test coverage.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/shared/ipc-channels.ts

@@ -18,5 +18,36 @@ export const IPC = {
   SHORTCUT_TRIGGERED: 'shortcut:triggered',
   WINDOW_MINIMIZE: 'window:minimize',
   WINDOW_MAXIMIZE: 'window:maximize',
-  WINDOW_CLOSE: 'window:close'
+  WINDOW_CLOSE: 'window:close',
+  OUTLINE_LIST: 'outline:list',
+  OUTLINE_CREATE: 'outline:create',
+  OUTLINE_UPDATE: 'outline:update',
+  OUTLINE_DELETE: 'outline:delete',
+  OUTLINE_MOVE: 'outline:move',
+  SETTING_LIST: 'setting:list',
+  SETTING_CREATE: 'setting:create',
+  SETTING_UPDATE: 'setting:update',
+  SETTING_DELETE: 'setting:delete',
+  SETTING_SYNC_REFS: 'setting:syncRefs',
+  INSPIRATION_LIST: 'inspiration:list',
+  INSPIRATION_CREATE: 'inspiration:create',
+  INSPIRATION_UPDATE: 'inspiration:update',
+  INSPIRATION_DELETE: 'inspiration:delete',
+  INSPIRATION_CONVERT: 'inspiration:convert',
+  SNAPSHOT_LIST: 'snapshot:list',
+  SNAPSHOT_CREATE: 'snapshot:create',
+  SNAPSHOT_RESTORE: 'snapshot:restore',
+  SNAPSHOT_DELETE: 'snapshot:delete',
+  SNAPSHOT_START_AUTO: 'snapshot:startAuto',
+  SNAPSHOT_STOP_AUTO: 'snapshot:stopAuto',
+  BOOKMARK_LIST: 'bookmark:list',
+  BOOKMARK_CREATE: 'bookmark:create',
+  BOOKMARK_UPDATE: 'bookmark:update',
+  BOOKMARK_RESOLVE: 'bookmark:resolve',
+  BOOKMARK_DELETE: 'bookmark:delete',
+  SEARCH_QUERY: 'search:query',
+  SEARCH_REPLACE: 'search:replace',
+  SEARCH_GET_HISTORY: 'search:getHistory',
+  SEARCH_SAVE_HISTORY: 'search:saveHistory',
+  WORDFREQ_ANALYZE: 'wordfreq:analyze'
 } as const