feat: comprehensive INFO/WARN/ERROR logging across all controller modules

Add structured operational logging at INFO, WARN, and ERROR levels to
every controller module. Standardize custom prefixes ([GEO], [SCHED],
[SYNC]) to use [INFO/WARN/ERROR] [module] format. Fix misleveled logs
(WARN->ERROR for data loss scenarios, WARN->INFO for routine operations).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

controller/internal/integrations/onlyoffice_filebrowser.go

@@ -13,6 +13,7 @@ type OnlyOfficeFileBrowserHandler struct{}
 func (h *OnlyOfficeFileBrowserHandler) Apply(ac *ApplyContext) error {
 	jwtSecret := ac.ProviderEnv["JWT_SECRET"]
 	if jwtSecret == "" {
+		ac.Logger.Printf("[ERROR] [integrations] OnlyOffice-FileBrowser apply: JWT_SECRET not set")
 		return fmt.Errorf("OnlyOffice JWT_SECRET nincs beállítva — telepítsd újra az alkalmazást")
 	}
 
@@ -21,6 +22,7 @@ func (h *OnlyOfficeFileBrowserHandler) Apply(ac *ApplyContext) error {
 		subdomain = ac.ProviderMeta.Subdomain
 	}
 	if subdomain == "" {
+		ac.Logger.Printf("[ERROR] [integrations] OnlyOffice-FileBrowser apply: subdomain unknown")
 		return fmt.Errorf("OnlyOffice aldomain nem ismert")
 	}
 
@@ -31,6 +33,7 @@ func (h *OnlyOfficeFileBrowserHandler) Apply(ac *ApplyContext) error {
 
 	configData, err := os.ReadFile(configPath)
 	if err != nil {
+		ac.Logger.Printf("[ERROR] [integrations] OnlyOffice-FileBrowser apply: %v", err)
 		return fmt.Errorf("FileBrowser config olvasási hiba: %w", err)
 	}
 
@@ -47,10 +50,12 @@ func (h *OnlyOfficeFileBrowserHandler) Apply(ac *ApplyContext) error {
 	// Atomic write
 	tmpPath := configPath + ".tmp"
 	if err := os.WriteFile(tmpPath, []byte(configStr), 0644); err != nil {
+		ac.Logger.Printf("[ERROR] [integrations] OnlyOffice-FileBrowser apply: %v", err)
 		return fmt.Errorf("config írási hiba: %w", err)
 	}
 	if err := os.Rename(tmpPath, configPath); err != nil {
 		_ = os.Remove(tmpPath)
+		ac.Logger.Printf("[ERROR] [integrations] OnlyOffice-FileBrowser apply: %v", err)
 		return fmt.Errorf("config átnevezési hiba: %w", err)
 	}
 
@@ -67,6 +72,7 @@ func (h *OnlyOfficeFileBrowserHandler) Revoke(ac *ApplyContext) error {
 		if os.IsNotExist(err) {
 			return nil
 		}
+		ac.Logger.Printf("[ERROR] [integrations] OnlyOffice-FileBrowser revoke: %v", err)
 		return fmt.Errorf("config olvasási hiba: %w", err)
 	}
 
@@ -79,10 +85,12 @@ func (h *OnlyOfficeFileBrowserHandler) Revoke(ac *ApplyContext) error {
 
 	tmpPath := configPath + ".tmp"
 	if err := os.WriteFile(tmpPath, []byte(cleaned), 0644); err != nil {
+		ac.Logger.Printf("[ERROR] [integrations] OnlyOffice-FileBrowser revoke: %v", err)
 		return fmt.Errorf("config írási hiba: %w", err)
 	}
 	if err := os.Rename(tmpPath, configPath); err != nil {
 		_ = os.Remove(tmpPath)
+		ac.Logger.Printf("[ERROR] [integrations] OnlyOffice-FileBrowser revoke: %v", err)
 		return fmt.Errorf("config átnevezési hiba: %w", err)
 	}