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/app/globals.css

@@ -94,36 +94,10 @@
   -webkit-backdrop-filter: blur(20px) saturate(180%);
 }
 
-@utility acrylic-heavy {
-  backdrop-filter: blur(40px) saturate(200%);
-  -webkit-backdrop-filter: blur(40px) saturate(200%);
-}
-
-@utility acrylic-light {
-  background: rgba(255, 255, 255, 0.72);
-  backdrop-filter: blur(24px) saturate(1.35);
-  -webkit-backdrop-filter: blur(24px) saturate(1.35);
-}
-
 @utility font-memento-serif {
   font-family: var(--font-memento-serif), ui-serif, Georgia, "Times New Roman", serif;
 }
 
-@utility acrylic-dark {
-  background: rgba(32, 32, 32, 0.75);
-  backdrop-filter: blur(20px) saturate(1.5);
-  -webkit-backdrop-filter: blur(20px) saturate(1.5);
-}
-
-@utility win11-shadow {
-  box-shadow: var(--shadow-card-rest);
-  transition: box-shadow var(--transition-normal);
-}
-
-@utility win11-shadow-hover {
-  box-shadow: var(--shadow-card-hover);
-}
-
 @utility editor-body {
   font-size: var(--editor-body-size, 16px);
 }
@@ -137,14 +111,6 @@ html.dark .memento-paper-texture {
   background-color: var(--background);
 }
 
-.memento-sidebar-depth {
-  box-shadow: 1px 0 10px rgba(0, 0, 0, 0.05);
-}
-
-html.dark .memento-sidebar-depth {
-  box-shadow: 4px 0 24px -8px rgba(0, 0, 0, 0.4);
-}
-
 html:not(.dark) .memento-active-nav {
   background: linear-gradient(to right, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.4));
   box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
@@ -164,12 +130,6 @@ html:not(.dark) .memento-active-nav {
   background: rgba(28, 28, 28, 0.2);
 }
 
-.ai-glass {
-  background: rgba(255, 255, 255, 0.85);
-  backdrop-filter: blur(20px);
-  border: 1px solid rgba(255, 255, 255, 0.5);
-}
-
 .sidebar-shadow {
   box-shadow: 1px 0 10px rgba(0, 0, 0, 0.05);
 }
@@ -188,41 +148,6 @@ html:not(.dark) .memento-active-nav {
   --ai-accent: #ACB995;
 }
 
-/* Sidebar toggle view button (Notebooks / Agents) */
-.sidebar-view-toggle {
-  display: flex;
-  background: rgba(255, 255, 255, 0.5);
-  padding: 2px;
-  border-radius: 999px;
-  border: 1px solid var(--border);
-}
-
-.sidebar-view-toggle-btn {
-  padding: 6px;
-  border-radius: 999px;
-  transition: all 150ms;
-  color: var(--muted-foreground);
-}
-
-.sidebar-view-toggle-btn:hover {
-  color: var(--foreground);
-}
-
-.sidebar-view-toggle-btn.active {
-  background: var(--foreground);
-  color: var(--background);
-}
-
-/* Dark mode toggle */
-html.dark .sidebar-view-toggle {
-  background: rgba(255, 255, 255, 0.08);
-}
-
-html.dark .sidebar-view-toggle-btn.active {
-  background: var(--primary);
-  color: var(--primary-foreground);
-}
-
 /* Inbox section separator */
 .sidebar-inbox-item {
   display: flex;
@@ -254,16 +179,6 @@ html.dark .sidebar-inbox-item.active {
   border: 1px solid rgba(255, 255, 255, 0.12);
 }
 
-/* Animated tab indicator for AI panel */
-.ai-tab-indicator {
-  position: absolute;
-  bottom: 0;
-  left: 0;
-  right: 0;
-  height: 2px;
-  background: var(--foreground);
-}
-
 /* Note date in editorial view */
 .note-date-badge {
   font-size: 11px;
@@ -274,31 +189,12 @@ html.dark .sidebar-inbox-item.active {
   opacity: 0.7;
 }
 
-/* Persian/Arabic: avoid uppercase + wide tracking on mixed scripts; bidi class set in TSX */
 .note-date-badge.note-date-badge--locale-rtl {
   text-transform: none;
   letter-spacing: 0.08em;
   unicode-bidi: isolate;
 }
 
-/* AI send button accent */
-.ai-send-btn {
-  background: var(--ai-accent);
-  color: white;
-  border-radius: 8px;
-  padding: 8px;
-  transition: transform 100ms, opacity 100ms;
-}
-
-.ai-send-btn:hover {
-  opacity: 0.9;
-  transform: scale(1.05);
-}
-
-.ai-send-btn:active {
-  transform: scale(0.95);
-}
-
 /* Dark mode active nav */
 html.dark .memento-active-nav {
   background: rgba(255, 255, 255, 0.09);
@@ -1125,36 +1021,6 @@ html.font-system * {
   pointer-events: none !important;
 }
 
-/* ============================================
-   Muuri Grid Styles for Drag & Drop
-   ============================================ */
-.muuri-grid {
-  position: relative;
-}
-
-/* Note: Width is controlled by Tailwind classes (w-1/2, w-1/3, w-full, etc.) */
-.muuri-item {
-  position: absolute;
-  /* width: 100%; REMOVED - Don't override Tailwind size classes */
-}
-
-.muuri-item.muuri-item-dragging {
-  z-index: 3;
-}
-
-.muuri-item.muuri-item-releasing {
-  z-index: 2;
-}
-
-.muuri-item.muuri-item-hidden {
-  z-index: 0;
-}
-
-/* Ensure note cards work properly with Muuri */
-.muuri-item>* {
-  width: 100%;
-}
-
 /* Force URLs/links to render LTR even in RTL mode */
 [dir="rtl"] .prose a {
   direction: ltr;