chore: remove dead code — 8 components, 5 libs, 4 API routes, 4 npm packages, 30+ scripts, dead CSS, dead exports

Removed unused components:
- brainstorm-canvas, brainstorm-create-dialog, invite-dialog, manual-idea-dialog
- note-inline-editor, profile-page-header, quota-paywall, label-management-dialog

Removed dead lib files:
- api-auth.ts, color-harmony-recommendation.ts, label-storage.ts, modern-color-options.ts
- hooks/use-card-size-mode.ts

Removed dead API routes:
- ai/test-chat, ai/test-embeddings, ai/test-tags, admin/randomize-labels

Removed unused npm packages:
- cmdk, novel, tippy.js, react-force-graph-2d

Cleaned dead CSS from globals.css:
- acrylic-*, win11-shadow-*, muuri-grid/item, ai-glass, ai-tab-indicator, ai-send-btn, sidebar-view-toggle, memento-sidebar-depth

Removed 29 orphan scripts and 3 root orphan files

Cleaned dead exports from 8 lib files:
- NOTE_TYPE_CONFIG, getPublishableKey, PROVIDER_DEFAULTS, useNotes/useNote/invalidateNote, etc.

memento-note/lib/query-hooks.ts

@@ -1,38 +1,12 @@
 'use client'
 
-import { useQueryClient, useMutation, useQuery } from '@tanstack/react-query'
+import { useQueryClient, useQuery } from '@tanstack/react-query'
 import { queryKeys } from './query-keys'
-import type { Note, Notebook, Label } from '@/lib/types'
+import type { Notebook, Label } from '@/lib/types'
 
 // Re-export query keys
 export { queryKeys }
 
-// ===== useNotes =====
-export function useNotes(notebookId?: string | null) {
-  return useQuery({
-    queryKey: queryKeys.notes(notebookId),
-    queryFn: async (): Promise<Note[]> => {
-      const url = notebookId ? `/api/notes?notebookId=${notebookId}` : '/api/notes'
-      const res = await fetch(url, { cache: 'no-store', credentials: 'include' })
-      const data = await res.json()
-      return data.notes || []
-    },
-  })
-}
-
-// ===== useNote =====
-export function useNote(noteId: string) {
-  return useQuery({
-    queryKey: queryKeys.note(noteId),
-    queryFn: async (): Promise<Note> => {
-      const res = await fetch(`/api/notes/${noteId}`, { cache: 'no-store', credentials: 'include' })
-      const data = await res.json()
-      return data.note || data
-    },
-    enabled: !!noteId,
-  })
-}
-
 // ===== useNotebooks =====
 export function useNotebooksQuery() {
   return useQuery({
@@ -64,10 +38,6 @@ export function invalidateNotes(queryClient: ReturnType<typeof useQueryClient>,
   queryClient.invalidateQueries({ queryKey: queryKeys.notes(notebookId) })
 }
 
-export function invalidateNote(queryClient: ReturnType<typeof useQueryClient>, noteId: string) {
-  queryClient.invalidateQueries({ queryKey: queryKeys.note(noteId) })
-}
-
 export function invalidateNotebooks(queryClient: ReturnType<typeof useQueryClient>) {
   queryClient.invalidateQueries({ queryKey: queryKeys.notebooks() })
 }