增加浏览器离线通知功能

migrations/008_web_push_notifications.sql

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+-- ============================================
+-- Web Push notifications
+-- 版本: 008
+-- 说明:
+-- - SQLite/D1 不支持 ALTER TABLE ADD COLUMN IF NOT EXISTS。
+-- - init-sqlite 使用 schema_migrations 保证该迁移只执行一次。
+-- - 本地 init-sqlite 会逐条执行并忽略 duplicate column name。
+-- ============================================
+
+CREATE TABLE IF NOT EXISTS notification_push_subscriptions (
+  id TEXT PRIMARY KEY,
+  username TEXT NOT NULL,
+  token_id TEXT,
+  endpoint TEXT NOT NULL UNIQUE,
+  p256dh TEXT NOT NULL,
+  auth TEXT NOT NULL,
+  user_agent TEXT,
+  enabled INTEGER DEFAULT 1,
+  created_at INTEGER NOT NULL,
+  updated_at INTEGER NOT NULL,
+  last_success_at INTEGER,
+  last_failure_at INTEGER,
+  failure_count INTEGER DEFAULT 0,
+  FOREIGN KEY (username) REFERENCES users(username) ON DELETE CASCADE
+);
+
+CREATE INDEX IF NOT EXISTS idx_push_subscriptions_username ON notification_push_subscriptions(username);
+CREATE INDEX IF NOT EXISTS idx_push_subscriptions_token ON notification_push_subscriptions(username, token_id);
+CREATE INDEX IF NOT EXISTS idx_push_subscriptions_enabled ON notification_push_subscriptions(username, enabled);
+
+-- Rebuild notifications without type CHECK so TS NotificationType is the source of truth.
+CREATE TABLE IF NOT EXISTS notifications_new (
+  id TEXT PRIMARY KEY,
+  username TEXT NOT NULL,
+  type TEXT NOT NULL,
+  title TEXT NOT NULL,
+  message TEXT NOT NULL,
+  timestamp INTEGER NOT NULL,
+  read INTEGER DEFAULT 0,
+  metadata TEXT,
+  FOREIGN KEY (username) REFERENCES users(username) ON DELETE CASCADE
+);
+
+INSERT OR IGNORE INTO notifications_new (id, username, type, title, message, timestamp, read, metadata)
+SELECT id, username, type, title, message, timestamp, read, metadata FROM notifications;
+
+DROP TABLE notifications;
+ALTER TABLE notifications_new RENAME TO notifications;
+
+CREATE INDEX IF NOT EXISTS idx_notifications_user_time ON notifications(username, timestamp DESC);
+CREATE INDEX IF NOT EXISTS idx_notifications_user_read ON notifications(username, read, timestamp DESC);
+

migrations/postgres/008_web_push_notifications.sql

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+-- ============================================
+-- Web Push notifications for Postgres
+-- 版本: 008
+-- ============================================
+
+
+CREATE TABLE IF NOT EXISTS notification_push_subscriptions (
+  id TEXT PRIMARY KEY,
+  username TEXT NOT NULL,
+  token_id TEXT,
+  endpoint TEXT NOT NULL UNIQUE,
+  p256dh TEXT NOT NULL,
+  auth TEXT NOT NULL,
+  user_agent TEXT,
+  enabled INTEGER DEFAULT 1,
+  created_at BIGINT NOT NULL,
+  updated_at BIGINT NOT NULL,
+  last_success_at BIGINT,
+  last_failure_at BIGINT,
+  failure_count INTEGER DEFAULT 0,
+  FOREIGN KEY (username) REFERENCES users(username) ON DELETE CASCADE
+);
+
+CREATE INDEX IF NOT EXISTS idx_push_subscriptions_username ON notification_push_subscriptions(username);
+CREATE INDEX IF NOT EXISTS idx_push_subscriptions_token ON notification_push_subscriptions(username, token_id);
+CREATE INDEX IF NOT EXISTS idx_push_subscriptions_enabled ON notification_push_subscriptions(username, enabled);
+
+ALTER TABLE notifications DROP CONSTRAINT IF EXISTS notifications_type_check;