refactor(db): use version string as primary key for ConfigVersion

-transition `of_config_versions` primary key from `id` to `version` string.
-add database migration files `202606270001_make_version_primary_key.sql` for PostgreSQL and SQLite.
-introduce AfterFind/AfterCreate GORM hooks to preserve JSON backward compatibility.
-refactor API controllers, logics, and front-end typescript definitions to receive `string` parameter.

internal/db/migrator/goose/postgres/202606270001_make_version_primary_key.sql

@@ -0,0 +1,19 @@
+-- +goose Up
+-- Remove old PRIMARY KEY on id, set version as PRIMARY KEY, drop id column
+
+-- 1. 移除旧主键约束
+ALTER TABLE of_config_versions DROP CONSTRAINT IF EXISTS of_config_versions_pkey;
+
+-- 2. 移除原先在 version 字段的唯一索引（因为 version 变成主键，主键隐含唯一性）
+DROP INDEX IF EXISTS idx_of_config_versions_version;
+
+-- 3. 将 version 设为新主键
+ALTER TABLE of_config_versions ADD PRIMARY KEY (version);
+
+-- 4. 彻底删除 id 列
+ALTER TABLE of_config_versions DROP COLUMN IF EXISTS id;
+
+-- +goose Down
+ALTER TABLE of_config_versions DROP CONSTRAINT IF EXISTS of_config_versions_pkey;
+ALTER TABLE of_config_versions ADD COLUMN IF NOT EXISTS id BIGSERIAL PRIMARY KEY;
+CREATE UNIQUE INDEX IF NOT EXISTS idx_of_config_versions_version ON of_config_versions (version);