feat(w5): ship v2.0.0 platform sync, undo persistence, and updates

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

tests/main/migrate-v5.test.ts

@@ -15,7 +15,7 @@ describe('migrate v5', () => {
     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)
+    expect(version.v).toBe(11)
     const cols = db.prepare('PRAGMA table_info(interactive_flows)').all() as { name: string }[]
     expect(cols.some((c) => c.name === 'flow_mode')).toBe(true)
     expect(cols.some((c) => c.name === 'mode_config_json')).toBe(true)
@@ -39,6 +39,6 @@ describe('migrate v5', () => {
     db.prepare('INSERT INTO schema_version (version) VALUES (4)').run()
     migrate(db)
     const version = db.prepare('SELECT MAX(version) AS v FROM schema_version').get() as { v: number }
-    expect(version.v).toBe(10)
+    expect(version.v).toBe(11)
   })
 })