feat(core): implement cordis configuration extension and migrate all plugins

backend/plugins/domain/admin/model/config.go

@@ -0,0 +1,20 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package model
+
+// DatabaseConfig holds database configuration needed by the admin plugin.
+type DatabaseConfig struct {
+	Enabled    bool   `config:"enabled" env:"DB_ENABLED" default:"false" autoEnable:"DB_HOST"`
+	Host       string `config:"host" env:"DB_HOST"`
+	Port       int    `config:"port" env:"DB_PORT" default:"5432"`
+	Database   string `config:"database" env:"DB_DATABASE"`
+	Username   string `config:"username" env:"DB_USERNAME"`
+	Password   string `config:"password" env:"DB_PASSWORD" secret:"true"`
+	SQLitePath string `config:"sqlite_path" env:"DB_SQLITE_PATH" default:"./data/wavelet.db"`
+}
+
+// ClickHouseConfig holds clickhouse enablement status needed by admin log queries/switching.
+type ClickHouseConfig struct {
+	Enabled bool `config:"enabled" env:"CLICKHOUSE_ENABLED" default:"false" autoEnable:"CLICKHOUSE_HOST"`
+}