优化结构

internal/config/runtime.go

@@ -63,7 +63,8 @@ func NewStore(config *Config) *Store {
 	return store
 }
 
-// LoadStore loads the initial snapshot and starts watching its source file.
+// LoadStore loads the initial snapshot and starts the single process-wide
+// Viper-backed watcher.
 func LoadStore(path string) (*Store, error) {
 	config, err := Load(path)
 	if err != nil {
@@ -260,13 +261,29 @@ func (r *Store) watchLoop(watcher *fsnotify.Watcher, stop <-chan struct{}, done
 			timerC = timer.C
 		case <-timerC:
 			timerC = nil
-			config, err := Load(path)
+			next, err := Load(path)
 			if err != nil {
 				// Keep the last valid snapshot. A partially-written file must not
 				// take down a running process or publish invalid state.
 				continue
 			}
-			r.Replace(config)
+			current := r.Snapshot()
+			if next.Admin == nil {
+				next.Admin = &Admin{}
+			}
+			// Storage and Email move to database-backed integration settings after
+			// first initialization. External config file edits must not erase the
+			// active values when those sections are absent from config.yaml.
+			if current != nil && current.Admin != nil {
+				if next.Admin.Storage == nil {
+					next.Admin.Storage = cloneStorage(current.Admin.Storage)
+				}
+				if next.Admin.Email == nil && current.Admin.Email != nil {
+					email := *current.Admin.Email
+					next.Admin.Email = &email
+				}
+			}
+			r.Replace(next)
 		case _, ok := <-errors:
 			// fsnotify errors are intentionally non-fatal; the watcher remains
 			// useful for subsequent events and Close always terminates it.