fix(persistence): migrate all pkg/persistence imports to plugins/infra/database and plugins/infra/cache

- Replace db.DB(ctx) with database.DB(ctx) from plugins/infra/database
- Replace db.Redis/db.PrefixedKey/db.GetJSON/db.SetJSON with cachepkg.* from plugins/infra/cache
- Replace pkg/persistence/idgen with pkg/idgen (already exists)
- Replace pkg/persistence/batchwriter with pkg/batchwriter (already exists)
- Replace pkg/persistence/migrator with pkg/migrator (already exists)
- Replace pkg/persistence/logstore with plugins/domain/risk_control/logstore
- Delete defunct pkg/{persistence,cap,message_gateway,push,shared,task}
- Fix vet issues: db alias in domain_test.go, driver_asynq_worker.TaskHandler reference
- Update Makefile architecture guard
- Update docs and skill references
- Update go.mod: gorilla/sessions promotion to direct dependency

pkg/migrator/goose/sqlite/202606100001_create_schedules.sql

@@ -0,0 +1,20 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS schedules (
+    id BIGINT PRIMARY KEY,
+    name VARCHAR(128) NOT NULL,
+    task_type VARCHAR(64) NOT NULL,
+    cron VARCHAR(64) NOT NULL,
+    payload TEXT,
+    is_active BOOLEAN NOT NULL DEFAULT TRUE,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+CREATE INDEX IF NOT EXISTS idx_schedules_is_active ON schedules (is_active);
+
+-- Seed initial cleanup task
+INSERT INTO schedules (id, name, task_type, cron, payload, is_active, created_at, updated_at)
+VALUES (1, '清理未使用上传', 'cleanup_unused_uploads', '0 */2 * * *', '{}', TRUE, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)
+ON CONFLICT (id) DO NOTHING;
+
+-- +goose Down
+DROP TABLE IF EXISTS schedules;