优化结构

internal/integration/runtimeconfig/store.go

@@ -23,6 +23,9 @@ type listener struct {
 }
 
 type Store struct {
+	// This store is intentionally not merged with config.Store. Integration
+	// settings are database-backed and listeners subscribe by provider key,
+	// whereas config.Store owns file snapshots and fsnotify lifecycle.
 	mu        sync.RWMutex
 	values    map[string]Config
 	listeners map[uint64]listener