Hide Brain Quest and segment popup, clarify streak includes completions

- Remove Brain Quest from default toolbar (still available in settings)
- Hide AnnotationPanel (segment popup) — users pick cells from Cell Library
- Streak already counts all activity (edits + completions); fix comments

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: amyleesterling

src/components/ExtensionBar.vue

@@ -116,7 +116,7 @@ const toolbarDefs = computed<ToolbarIcon[]>(() => [
   { id: 'settings', emoji: '⚙️', label: 'Profile Settings', action: () => { showSettings.value = true; } },
 ]);
 
-const DEFAULT_TOOLBAR_ORDER = ['split', 'merge', 'recap', 'leaderboard', 'quest', 'cells', 'batch', 'help', 'feed', 'chat', 'settings'];
+const DEFAULT_TOOLBAR_ORDER = ['split', 'merge', 'recap', 'leaderboard', 'cells', 'batch', 'help', 'feed', 'chat', 'settings'];
 
 const visibleToolbar = computed(() => {
   const prefs = useUserPreferencesStore().prefs;
@@ -161,7 +161,7 @@ function activateTool(toolType: 'multicut' | 'merge') {
 
 <template>
   <login-modal />
-  <annotation-panel />
+  <!-- <annotation-panel /> --> <!-- Hidden: users pick cells from Cell Library instead -->
   <achievement-toast />
   <command-palette
     ref="cmdPalette"

src/store.ts

@@ -406,7 +406,7 @@ export interface UserStats {
   editsThisMonth: number;
   mergesThisMonth: number;
   splitsThisMonth: number;
-  // Streak — consecutive calendar days with ≥1 edit (merge OR split counts)
+  // Streak — consecutive calendar days with ≥1 activity (edits or cell completions)
   currentStreak: number;
   longestStreak: number;
   lastEditDate: string;       // ISO date string e.g. "2026-03-01"
@@ -1821,7 +1821,7 @@ export const useProofreadingBackendStore = defineStore('proofreadingBackend', ()
         updates.cells_completed = (row.cells_completed || 0) + 1;
       }
 
-      // Calculate streak: consecutive calendar days with edits
+      // Calculate streak: consecutive calendar days with any activity (edits or completions)
       const lastDate = row.last_edit_date;
       let streak = row.current_streak || 0;
       let longest = row.longest_streak || 0;