feat: Implement user profile preferences for start page, Git identity, and task drawer auto-open, alongside Git server default branch configuration.

frontend/src/lib/stores/taskDrawer.js

@@ -21,7 +21,21 @@
 // @TEST_FIXTURE: valid_store_state -> {"isOpen": true, "activeTaskId": "test_1", "resourceTaskMap": {"res1": {"taskId": "test_1", "status": "RUNNING"}}}
 // @TEST_INVARIANT: state_management -> verifies: [valid_store_state]
 
-import { writable, derived } from 'svelte/store';
+import { writable } from 'svelte/store';
+
+const TASK_DRAWER_AUTO_OPEN_STORAGE_KEY = "ss_tools.profile.auto_open_task_drawer";
+
+function readAutoOpenTaskDrawerPreference() {
+  if (typeof window === "undefined") {
+    return true;
+  }
+  const rawValue = window.localStorage.getItem(TASK_DRAWER_AUTO_OPEN_STORAGE_KEY);
+  if (rawValue === "false") return false;
+  if (rawValue === "true") return true;
+  return true;
+}
+
+let autoOpenTaskDrawerPreference = readAutoOpenTaskDrawerPreference();
 
 const initialState = {
   isOpen: false,
@@ -37,12 +51,54 @@ export const taskDrawerStore = writable(initialState);
  * @UX_STATE: Open -> Drawer visible, logs streaming
  */
 export function openDrawerForTask(taskId) {
+  if (!taskId) {
+    console.log("[taskDrawer.openDrawerForTask][Action] Skip open: taskId is empty");
+    return false;
+  }
   console.log(`[taskDrawer.openDrawerForTask][Action] Opening drawer for task ${taskId}`);
   taskDrawerStore.update(state => ({
     ...state,
     isOpen: true,
     activeTaskId: taskId
   }));
+  return true;
+}
+
+/**
+ * Update user preference for automatic drawer opening.
+ * @param {boolean} enabled - Whether automatic opening is enabled.
+ */
+export function setTaskDrawerAutoOpenPreference(enabled) {
+  autoOpenTaskDrawerPreference = enabled !== false;
+  if (typeof window !== "undefined") {
+    window.localStorage.setItem(
+      TASK_DRAWER_AUTO_OPEN_STORAGE_KEY,
+      autoOpenTaskDrawerPreference ? "true" : "false",
+    );
+  }
+}
+
+/**
+ * Read current user preference for automatic drawer opening.
+ * @returns {boolean} true if automatic drawer opening is enabled.
+ */
+export function getTaskDrawerAutoOpenPreference() {
+  return autoOpenTaskDrawerPreference;
+}
+
+/**
+ * Open drawer for a task only when user preference allows auto-open.
+ * @param {string} taskId - The task ID to show in drawer.
+ * @returns {boolean} true if drawer was opened.
+ */
+export function openDrawerForTaskIfPreferred(taskId) {
+  if (autoOpenTaskDrawerPreference !== true) {
+    console.log(
+      `[taskDrawer.openDrawerForTaskIfPreferred][Action] Skip auto-open for task ${taskId}`,
+    );
+    return false;
+  }
+  return openDrawerForTask(taskId);
 }
 
 /**