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/types.ts

@@ -50,13 +50,6 @@ export interface LinkMetadata {
 
 export type NoteType = 'text' | 'markdown' | 'richtext' | 'checklist'
 
-export const NOTE_TYPE_CONFIG: Record<NoteType, { icon: string; label: string }> = {
-  text: { icon: 'AlignLeft', label: 'Text' },
-  markdown: { icon: 'FileCode2', label: 'Markdown' },
-  richtext: { icon: 'PenLine', label: 'Rich Text' },
-  checklist: { icon: 'ListChecks', label: 'Checklist' },
-}
-
 export interface Note {
   id: string;
   title: string | null;