fix(desktop): add logging for config migration and backup operations

Address code review feedback:
- Log when JSON parsing fails and migration is attempted
- Log migration progress messages
- Log backup success/failure status

Co-authored-by: tikazyq <3393101+tikazyq@users.noreply.github.com>

Author: Copilot

packages/desktop/src-tauri/src/config.rs

@@ -108,16 +108,19 @@ impl DesktopConfig {
                     return config;
                 }
                 Err(error) => {
-                    eprintln!("Failed to parse desktop config: {error}");
+                    eprintln!("Failed to parse desktop config as JSON: {error}");
+                    eprintln!("Will attempt migration from legacy YAML format");
                 }
             },
             Err(_) => {}
         }
 
         // Migration: Try legacy YAML
         if let Some(legacy_config) = load_legacy_yaml() {
+            eprintln!("Migrating desktop config from YAML to JSON format");
             legacy_config.persist(); // Save as JSON
             backup_legacy_yaml();
+            eprintln!("Migration complete: desktop.yaml → desktop.json");
             return legacy_config;
         }
 
@@ -161,7 +164,10 @@ fn backup_legacy_yaml() {
     if let Some(dir) = config_dir() {
         let legacy = dir.join(LEGACY_CONFIG_FILE);
         let backup = dir.join("desktop.yaml.bak");
-        let _ = fs::rename(legacy, backup);
+        match fs::rename(&legacy, &backup) {
+            Ok(_) => eprintln!("Legacy config backed up: desktop.yaml.bak"),
+            Err(error) => eprintln!("Failed to backup legacy config: {error}"),
+        }
     }
 }
 

specs/162-desktop-config-json-migration/README.md

@@ -1,5 +1,5 @@
 ---
-status: planned
+status: complete
 created: '2025-12-10'
 tags:
   - desktop
@@ -12,12 +12,17 @@ created_at: '2025-12-10T08:49:08.237Z'
 depends_on:
   - 147-json-config-format
   - 148-leanspec-desktop-app
-updated_at: '2025-12-10T08:49:08.287Z'
+updated_at: '2025-12-18T09:56:48.390Z'
+completed_at: '2025-12-18T09:56:48.390Z'
+completed: '2025-12-18'
+transitions:
+  - status: complete
+    at: '2025-12-18T09:56:48.390Z'
 ---
 
 # Migrate Desktop Config from YAML to JSON
 
-> **Status**: 🗓️ Planned · **Priority**: High · **Created**: 2025-12-10 · **Tags**: desktop, config, migration, breaking-change, consistency
+> **Status**: ✅ Complete · **Priority**: High · **Created**: 2025-12-10 · **Tags**: desktop, config, migration, breaking-change, consistency
 
 ## Overview