feat(w4): ship v1.5.0 timeline, character arc, and compliance

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

tests/main/migrate-v10.test.ts

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+import { describe, it, expect, afterEach } from 'vitest'
+import { DatabaseSync } from 'node:sqlite'
+import { migrate } from '../../src/main/db/migrate'
+import type { SqliteDb } from '../../src/main/db/types'
+
+describe('migrate v10', () => {
+  let db: SqliteDb
+  afterEach(() => db?.close())
+
+  it('UT-MIG-10: fresh database migrates to v10 with timeline_events', () => {
+    db = new DatabaseSync(':memory:')
+    migrate(db)
+    const version = db.prepare('SELECT MAX(version) AS v FROM schema_version').get() as { v: number }
+    expect(version.v).toBe(10)
+    const table = db
+      .prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='timeline_events'")
+      .get()
+    expect(table).toBeTruthy()
+    const cols = db.prepare('PRAGMA table_info(timeline_events)').all() as Array<{ name: string }>
+    expect(cols.some((c) => c.name === 'story_time')).toBe(true)
+  })
+})