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/api/ai/test-embeddings/route.ts

@@ -1,99 +0,0 @@
-import { NextRequest, NextResponse } from 'next/server'
-import { getEmbeddingsProvider } from '@/lib/ai/factory'
-import { getSystemConfig } from '@/lib/config'
-import { auth } from '@/auth'
-
-function getProviderDetails(config: Record<string, string>, providerType: string) {
-  const provider = providerType.toLowerCase()
-
-  switch (provider) {
-    case 'ollama':
-      return {
-        provider: 'Ollama',
-        baseUrl: config.OLLAMA_BASE_URL || 'http://localhost:11434',
-        model: config.AI_MODEL_EMBEDDING || 'embeddinggemma:latest'
-      }
-    case 'openai':
-      return {
-        provider: 'OpenAI',
-        baseUrl: 'https://api.openai.com/v1',
-        model: config.AI_MODEL_EMBEDDING || 'text-embedding-3-small'
-      }
-    case 'custom':
-      return {
-        provider: 'Custom OpenAI',
-        baseUrl: config.CUSTOM_OPENAI_BASE_URL || 'Not configured',
-        model: config.AI_MODEL_EMBEDDING || 'text-embedding-3-small'
-      }
-    default:
-      return {
-        provider: provider,
-        baseUrl: 'unknown',
-        model: config.AI_MODEL_EMBEDDING || 'unknown'
-      }
-  }
-}
-
-export async function POST(request: NextRequest) {
-  const session = await auth()
-  if (!session?.user?.id) {
-    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
-  }
-  if ((session.user as any).role !== 'ADMIN') {
-    return NextResponse.json({ error: 'Forbidden' }, { status: 403 })
-  }
-
-  try {
-    const config = await getSystemConfig()
-    const provider = getEmbeddingsProvider(config)
-
-    const testText = 'test'
-    const startTime = Date.now()
-    const embeddings = await provider.getEmbeddings(testText)
-    const endTime = Date.now()
-
-    if (!embeddings || embeddings.length === 0) {
-      const providerType = config.AI_PROVIDER_EMBEDDING || 'ollama'
-      const details = getProviderDetails(config, providerType)
-      return NextResponse.json(
-        {
-          success: false,
-          error: 'No embeddings returned',
-          provider: providerType,
-          model: config.AI_MODEL_EMBEDDING || 'embeddinggemma:latest',
-          details
-        },
-        { status: 500 }
-      )
-    }
-
-    const providerType = config.AI_PROVIDER_EMBEDDING || 'ollama'
-    const details = getProviderDetails(config, providerType)
-
-    return NextResponse.json({
-      success: true,
-      provider: providerType,
-      model: config.AI_MODEL_EMBEDDING || 'embeddinggemma:latest',
-      embeddingLength: embeddings.length,
-      firstValues: embeddings.slice(0, 5),
-      responseTime: endTime - startTime,
-      details
-    })
-  } catch (error: any) {
-    const config = await getSystemConfig()
-    const providerType = config.AI_PROVIDER_EMBEDDING || 'ollama'
-    const details = getProviderDetails(config, providerType)
-
-    return NextResponse.json(
-      {
-        success: false,
-        error: error.message || 'Unknown error',
-        provider: providerType,
-        model: config.AI_MODEL_EMBEDDING || 'embeddinggemma:latest',
-        details,
-        stack: process.env.NODE_ENV === 'development' ? error.stack : undefined
-      },
-      { status: 500 }
-    )
-  }
-}