fix: Add localized slash command descriptions to remaining locales

Populate slashCommands.profilesDescription and slashCommands.modelsDescription in all non-English locale files
Keep translations consistent with the new /profiles and /models commands so the UI no longer falls back to raw keys

Author: jmalmo

webview-ui/src/i18n/locales/ca/chat.json

@@ -407,7 +407,9 @@
 			"description": "Are you sure you want to delete the command \"{{name}}\"? This action cannot be undone.",
 			"cancel": "Cancel",
 			"confirm": "Delete"
-		}
+		},
+		"profilesDescription": "Switch API configuration profiles",
+		"modelsDescription": "Switch models for the active profile"
 	},
 	"slashCommand": {
 		"wantsToRun": "Roo wants to run a slash command",