semantic cleanup

frontend/src/components/git/BranchSelector.svelte

@@ -33,6 +33,11 @@
     const dispatch = createEventDispatcher();
 
     // [DEF:onMount:Function]
+    /**
+     * @purpose Load branches when component is mounted.
+     * @pre Component is initialized.
+     * @post loadBranches is called.
+     */
     onMount(async () => {
         await loadBranches();
     });
@@ -41,6 +46,7 @@
     // [DEF:loadBranches:Function]
     /**
      * @purpose Загружает список веток для дашборда.
+     * @pre dashboardId is provided.
      * @post branches обновлен.
      */
     async function loadBranches() {
@@ -59,6 +65,11 @@
     // [/DEF:loadBranches:Function]
 
     // [DEF:handleSelect:Function]
+    /**
+     * @purpose Handles branch selection from dropdown.
+     * @pre event contains branch name.
+     * @post handleCheckout is called with selected branch.
+     */
     function handleSelect(event) {
         handleCheckout(event.target.value);
     }
@@ -88,7 +99,8 @@
     // [DEF:handleCreate:Function]
     /**
      * @purpose Создает новую ветку.
-     * @post Новая ветка создана и загружена.
+     * @pre newBranchName is not empty.
+     * @post Новая ветка создана и загружена; showCreate reset.
      */
     async function handleCreate() {
         if (!newBranchName) return;