feat: add .nitro upload + sync-all + repair-icons features

- Upload .nitro bundles directly with full DB, catalog, and furnidata integration
- Generate SQL migration files on upload (optional)
- Auto-sync missing furniture from all configured clone sources (SSE batch)
- Repair missing icons by extracting from local .nitro or downloading from sources
- All behind ASSETS_IMPORT permission

src/messages/en.json

@@ -2481,6 +2481,8 @@
 				"badgesDescription": "Import and manage badge assets from external sources.",
 				"furni": "Furni",
 				"furniDescription": "Import furniture definitions, SWF files, and icons.",
+				"upload": "Upload .nitro",
+				"uploadDescription": "Upload .nitro bundles and icons directly without SWF conversion.",
 				"clothing": "Clothing",
 				"clothingDescription": "Import clothing and wearables for avatars.",
 				"effects": "Effects",
@@ -2488,7 +2490,11 @@
 				"pets": "Pets",
 				"petsDescription": "Import pet data and icons.",
 				"clone": "Clone",
-				"cloneDescription": "Clone existing items from one source to another."
+				"cloneDescription": "Clone existing items from one source to another.",
+				"sync": "Auto Sync",
+				"syncDescription": "Automatically import missing furniture from all configured sources.",
+				"repairIcons": "Repair Icons",
+				"repairIconsDescription": "Download any missing icon files for furniture already in the database."
 			},
 			"translations": {
 				"title": "Translations",