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/main/db/repositories/inspiration.repo.ts

@@ -0,0 +1,91 @@
+import { randomUUID } from 'crypto'
+import type { InspirationEntry, SettingType } from '../../../shared/types'
+import type { SqliteDb } from '../types'
+import { stripHtml } from '../../services/word-count'
+import type { OutlineRepository } from './outline.repo'
+import type { SettingRepository } from './setting.repo'
+
+function mapRow(row: Record<string, unknown>): InspirationEntry {
+  let tags: string[] = []
+  try {
+    tags = JSON.parse((row.tags as string) || '[]') as string[]
+  } catch {
+    tags = []
+  }
+  return {
+    id: row.id as string,
+    title: row.title as string,
+    content: row.content as string,
+    tags,
+    createdAt: row.created_at as string,
+    updatedAt: row.updated_at as string
+  }
+}
+
+export class InspirationRepository {
+  constructor(private db: SqliteDb) {}
+
+  create(title = '', content = '', tags: string[] = []): InspirationEntry {
+    const id = randomUUID()
+    this.db
+      .prepare(`INSERT INTO inspiration (id, title, content, tags) VALUES (?, ?, ?, ?)`)
+      .run(id, title, content, JSON.stringify(tags))
+    return this.get(id)!
+  }
+
+  get(id: string): InspirationEntry | null {
+    const row = this.db.prepare('SELECT * FROM inspiration WHERE id = ?').get(id) as
+      | Record<string, unknown>
+      | undefined
+    return row ? mapRow(row) : null
+  }
+
+  list(): InspirationEntry[] {
+    return (
+      this.db.prepare('SELECT * FROM inspiration ORDER BY updated_at DESC').all() as Record<string, unknown>[]
+    ).map(mapRow)
+  }
+
+  update(
+    id: string,
+    patch: Partial<{ title: string; content: string; tags: string[] }>
+  ): InspirationEntry {
+    const existing = this.get(id)
+    if (!existing) throw new Error('Inspiration not found')
+
+    this.db
+      .prepare(
+        `UPDATE inspiration SET title = ?, content = ?, tags = ?, updated_at = datetime('now') WHERE id = ?`
+      )
+      .run(
+        patch.title ?? existing.title,
+        patch.content ?? existing.content,
+        JSON.stringify(patch.tags ?? existing.tags),
+        id
+      )
+    return this.get(id)!
+  }
+
+  delete(id: string): void {
+    this.db.prepare('DELETE FROM inspiration WHERE id = ?').run(id)
+  }
+
+  convertToOutline(id: string, outlineRepo: OutlineRepository) {
+    const item = this.get(id)
+    if (!item) throw new Error('Inspiration not found')
+
+    const outline = outlineRepo.create(null, item.title || '未命名灵感', outlineRepo.nextSortOrder(null))
+    outlineRepo.update(outline.id, { description: stripHtml(item.content) })
+    this.delete(id)
+    return outlineRepo.get(outline.id)!
+  }
+
+  convertToSetting(id: string, type: SettingType, settingRepo: SettingRepository) {
+    const item = this.get(id)
+    if (!item) throw new Error('Inspiration not found')
+
+    const setting = settingRepo.create(type, item.title || '未命名设定', stripHtml(item.content))
+    this.delete(id)
+    return setting
+  }
+}