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/electron-api.d.ts

@@ -1,13 +1,24 @@
 import type {
   ActionId,
+  Bookmark,
   BookMeta,
   BookOpenResult,
   Chapter,
   CreateBookParams,
   GlobalSettings,
+  InspirationEntry,
   IpcResult,
+  LandmarkType,
+  OutlineItem,
+  OutlineStatus,
+  SearchResult,
+  SettingEntry,
+  SettingType,
+  Snapshot,
+  SnapshotType,
   UpdateChapterParams,
-  Volume
+  Volume,
+  WordFreqResult
 } from './types'
 
 export interface ElectronAPI {
@@ -45,6 +56,119 @@ export interface ElectronAPI {
     update: (params: UpdateChapterParams) => Promise<IpcResult<Chapter>>
     delete: (bookId: string, chapterId: string) => Promise<IpcResult<void>>
   }
+  outline: {
+    list: (bookId: string) => Promise<IpcResult<OutlineItem[]>>
+    create: (
+      bookId: string,
+      title: string,
+      parentId?: string | null,
+      sortOrder?: number
+    ) => Promise<IpcResult<OutlineItem>>
+    update: (
+      bookId: string,
+      id: string,
+      patch: Partial<{
+        title: string
+        description: string
+        status: OutlineStatus
+        expectedWordCount: number | null
+        chapterId: string | null
+        sortOrder: number
+      }>
+    ) => Promise<IpcResult<OutlineItem>>
+    delete: (bookId: string, id: string) => Promise<IpcResult<void>>
+    move: (
+      bookId: string,
+      id: string,
+      parentId: string | null,
+      sortOrder: number
+    ) => Promise<IpcResult<OutlineItem>>
+  }
+  setting: {
+    list: (bookId: string, type?: SettingType) => Promise<IpcResult<SettingEntry[]>>
+    create: (bookId: string, type: SettingType, name: string) => Promise<IpcResult<SettingEntry>>
+    update: (
+      bookId: string,
+      id: string,
+      patch: Partial<{ name: string; description: string; type: SettingType; properties: Record<string, unknown> }>
+    ) => Promise<IpcResult<SettingEntry>>
+    delete: (bookId: string, id: string) => Promise<IpcResult<void>>
+    syncRefs: (bookId: string, id: string, chapterIds: string[]) => Promise<IpcResult<SettingEntry>>
+  }
+  inspiration: {
+    list: (bookId: string) => Promise<IpcResult<InspirationEntry[]>>
+    create: (
+      bookId: string,
+      title?: string,
+      content?: string,
+      tags?: string[]
+    ) => Promise<IpcResult<InspirationEntry>>
+    update: (
+      bookId: string,
+      id: string,
+      patch: Partial<{ title: string; content: string; tags: string[] }>
+    ) => Promise<IpcResult<InspirationEntry>>
+    delete: (bookId: string, id: string) => Promise<IpcResult<void>>
+    convert: (
+      bookId: string,
+      id: string,
+      targetKind: 'outline' | 'setting',
+      settingType?: SettingType
+    ) => Promise<IpcResult<OutlineItem | SettingEntry>>
+  }
+  snapshot: {
+    list: (bookId: string, chapterId: string) => Promise<IpcResult<Snapshot[]>>
+    create: (
+      bookId: string,
+      chapterId: string,
+      type: SnapshotType,
+      name?: string,
+      content?: string
+    ) => Promise<IpcResult<Snapshot>>
+    restore: (bookId: string, chapterId: string, snapshotId: string) => Promise<IpcResult<Chapter>>
+    delete: (bookId: string, snapshotId: string) => Promise<IpcResult<void>>
+    startAutoSave: (bookId: string, chapterId: string) => Promise<IpcResult<void>>
+    stopAutoSave: (bookId: string, chapterId: string) => Promise<IpcResult<void>>
+  }
+  bookmark: {
+    list: (bookId: string, chapterId?: string, resolved?: boolean) => Promise<IpcResult<Bookmark[]>>
+    create: (
+      bookId: string,
+      chapterId: string,
+      position: number,
+      label: string,
+      landmarkType?: LandmarkType
+    ) => Promise<IpcResult<Bookmark>>
+    update: (
+      bookId: string,
+      id: string,
+      patch: Partial<{ label: string; position: number; landmarkType: LandmarkType }>
+    ) => Promise<IpcResult<Bookmark>>
+    resolve: (bookId: string, id: string, resolved: boolean) => Promise<IpcResult<Bookmark>>
+    delete: (bookId: string, id: string) => Promise<IpcResult<void>>
+  }
+  search: {
+    query: (
+      bookId: string,
+      query: string,
+      options?: { regex?: boolean; caseSensitive?: boolean; matchWholeWord?: boolean }
+    ) => Promise<IpcResult<SearchResult[]>>
+    replace: (
+      bookId: string,
+      query: string,
+      replacement: string,
+      dryRun: boolean,
+      options?: { regex?: boolean; caseSensitive?: boolean }
+    ) => Promise<IpcResult<{ count: number; previews: SearchResult[] }>>
+    getHistory: () => Promise<IpcResult<string[]>>
+    saveHistory: (query: string) => Promise<IpcResult<string[]>>
+  }
+  wordfreq: {
+    analyze: (
+      bookId: string,
+      scope: { kind: 'book' | 'volume' | 'chapter'; chapterId?: string; volumeId?: string }
+    ) => Promise<IpcResult<WordFreqResult>>
+  }
   shortcut: {
     getAll: () => Promise<IpcResult<Record<ActionId, string>>>
     register: (action: ActionId, accelerator: string) => Promise<IpcResult<void>>