feat: implement ChatGPT owner demotion service with a FastAPI backend and a basic frontend, alongside updated project metadata.

backend/internal/database/sqlite.go

@@ -147,6 +147,20 @@ func (d *DB) createTables() error {
 		);
 
 		CREATE INDEX IF NOT EXISTS idx_codex_auth_proxies_enabled ON codex_auth_proxies(is_enabled);
+
+		-- 日志持久化表
+		CREATE TABLE IF NOT EXISTS app_logs (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			timestamp DATETIME NOT NULL,
+			level TEXT NOT NULL,
+			message TEXT NOT NULL,
+			email TEXT,
+			module TEXT NOT NULL
+		);
+
+		CREATE INDEX IF NOT EXISTS idx_app_logs_timestamp ON app_logs(timestamp);
+		CREATE INDEX IF NOT EXISTS idx_app_logs_module ON app_logs(module);
+		CREATE INDEX IF NOT EXISTS idx_app_logs_level ON app_logs(level);
 	`)
 	return err
 }
@@ -1008,6 +1022,186 @@ func (d *DB) GetCodexProxyStats() map[string]int {
 	return stats
 }
 
+// ========================
+// 日志持久化相关方法
+// ========================
+
+// LogEntry 日志条目
+type LogEntry struct {
+	ID        int64     `json:"id"`
+	Timestamp time.Time `json:"timestamp"`
+	Level     string    `json:"level"`
+	Message   string    `json:"message"`
+	Email     string    `json:"email,omitempty"`
+	Module    string    `json:"module,omitempty"`
+}
+
+// InsertLog 插入日志
+func (d *DB) InsertLog(timestamp time.Time, level, message, email, module string) error {
+	_, err := d.db.Exec(`
+		INSERT INTO app_logs (timestamp, level, message, email, module)
+		VALUES (?, ?, ?, ?, ?)
+	`, timestamp, level, message, email, module)
+	return err
+}
+
+// GetLogs 获取最近的日志
+func (d *DB) GetLogs(limit int) ([]LogEntry, error) {
+	if limit <= 0 {
+		limit = 100
+	}
+	if limit > 1000 {
+		limit = 1000
+	}
+
+	rows, err := d.db.Query(`
+		SELECT id, timestamp, level, message, COALESCE(email, ''), module
+		FROM app_logs
+		ORDER BY timestamp DESC
+		LIMIT ?
+	`, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var logs []LogEntry
+	for rows.Next() {
+		var log LogEntry
+		if err := rows.Scan(&log.ID, &log.Timestamp, &log.Level, &log.Message, &log.Email, &log.Module); err != nil {
+			continue
+		}
+		logs = append(logs, log)
+	}
+
+	// 反转顺序（让最新的在后面，符合日志显示习惯）
+	for i, j := 0, len(logs)-1; i < j; i, j = i+1, j-1 {
+		logs[i], logs[j] = logs[j], logs[i]
+	}
+
+	return logs, nil
+}
+
+// GetLogsByModule 按模块获取日志
+func (d *DB) GetLogsByModule(module string, page, pageSize int) ([]LogEntry, int, error) {
+	if page < 1 {
+		page = 1
+	}
+	if pageSize <= 0 {
+		pageSize = 20
+	}
+
+	// 获取总数
+	var total int
+	d.db.QueryRow("SELECT COUNT(*) FROM app_logs WHERE module = ?", module).Scan(&total)
+
+	offset := (page - 1) * pageSize
+	rows, err := d.db.Query(`
+		SELECT id, timestamp, level, message, COALESCE(email, ''), module
+		FROM app_logs
+		WHERE module = ?
+		ORDER BY timestamp DESC
+		LIMIT ? OFFSET ?
+	`, module, pageSize, offset)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer rows.Close()
+
+	var logs []LogEntry
+	for rows.Next() {
+		var log LogEntry
+		if err := rows.Scan(&log.ID, &log.Timestamp, &log.Level, &log.Message, &log.Email, &log.Module); err != nil {
+			continue
+		}
+		logs = append(logs, log)
+	}
+
+	return logs, total, nil
+}
+
+// GetLogsByModuleAndLevel 按模块和级别获取日志
+func (d *DB) GetLogsByModuleAndLevel(module, level string, page, pageSize int) ([]LogEntry, int, error) {
+	if page < 1 {
+		page = 1
+	}
+	if pageSize <= 0 {
+		pageSize = 20
+	}
+
+	// 构建查询
+	countQuery := "SELECT COUNT(*) FROM app_logs WHERE module = ?"
+	selectQuery := `
+		SELECT id, timestamp, level, message, COALESCE(email, ''), module
+		FROM app_logs
+		WHERE module = ?`
+	args := []interface{}{module}
+
+	if level != "" {
+		countQuery += " AND level = ?"
+		selectQuery += " AND level = ?"
+		args = append(args, level)
+	}
+
+	// 获取总数
+	var total int
+	d.db.QueryRow(countQuery, args...).Scan(&total)
+
+	offset := (page - 1) * pageSize
+	selectQuery += " ORDER BY timestamp DESC LIMIT ? OFFSET ?"
+	args = append(args, pageSize, offset)
+
+	rows, err := d.db.Query(selectQuery, args...)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer rows.Close()
+
+	var logs []LogEntry
+	for rows.Next() {
+		var log LogEntry
+		if err := rows.Scan(&log.ID, &log.Timestamp, &log.Level, &log.Message, &log.Email, &log.Module); err != nil {
+			continue
+		}
+		logs = append(logs, log)
+	}
+
+	return logs, total, nil
+}
+
+// ClearLogs 清空所有日志
+func (d *DB) ClearLogs() error {
+	_, err := d.db.Exec("DELETE FROM app_logs")
+	return err
+}
+
+// ClearLogsByModule 按模块清空日志
+func (d *DB) ClearLogsByModule(module string) (int64, error) {
+	result, err := d.db.Exec("DELETE FROM app_logs WHERE module = ?", module)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected()
+}
+
+// CleanupOldLogs 清理旧日志（保留最近 N 条）
+func (d *DB) CleanupOldLogs(keepCount int) (int64, error) {
+	if keepCount <= 0 {
+		keepCount = 5000
+	}
+
+	result, err := d.db.Exec(`
+		DELETE FROM app_logs
+		WHERE id NOT IN (
+			SELECT id FROM app_logs ORDER BY timestamp DESC LIMIT ?
+		)
+	`, keepCount)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected()
+}
+
 // Close 关闭数据库
 func (d *DB) Close() error {
 	if d.db != nil {