feat: brainstorm sessions, PDF document Q&A, embedding fixes, and UI improvements

- Add brainstorm feature with collaborative canvas, AI idea generation, live cursors, playback, and export
- Add PDF upload/extraction/ingestion pipeline with pgvector document search (RAG)
- Add document Q&A overlay with streaming chat and PDF preview
- Add note attachments UI with status polling, grid layout, and auto-scroll
- Add task extraction AI tool and agent executor improvements
- Fix NoteEmbedding missing updatedAt column, re-index 66 notes with 1536-dim embeddings
- Fix brainstorm 'Create Note' button: add success toast and redirect to created note
- Fix memory echo notification infinite polling
- Fix chat route to always include document_search tool
- Add brainstorm i18n keys across all 14 locales
- Add socket server for real-time brainstorm collaboration
- Add hierarchical notebook selector and organize notebook dialog improvements
- Add sidebar brainstorm section with session management
- Update prisma schema with brainstorm tables, attachments, and document chunks

architectural-grid11/src/constants.ts

@@ -0,0 +1,93 @@
+import { Carnet, Note } from './types';
+
+export const CARNETS: Carnet[] = [
+  { id: '1', name: 'Daily Notes', initial: 'D', type: 'Private', isPrivate: true },
+  { id: '2', name: 'Project: Neo', initial: 'P', type: 'Project' },
+  { id: '3', name: 'Shared Docs', initial: 'S', type: 'Shared' },
+  { id: '4', name: 'Architecture Research', initial: 'A', type: 'Project' },
+  { id: '5', name: 'History of Architecture', initial: 'H', type: 'Project', parentId: '4' },
+  { id: '6', name: 'Modernism', initial: 'M', type: 'Project', parentId: '5' },
+  { id: '7', name: 'Sustainable Design', initial: 'S', type: 'Project', parentId: '4' },
+];
+
+export const ALL_NOTES: Note[] = [
+  {
+    id: 'n1',
+    carnetId: '4',
+    title: 'Grid Systems & Geometry',
+    date: 'Oct 26, 2024',
+    content: 'Grid Systems are the foundation of cognitive design. We use geometric blocks to define spaces. The repetitive structure creates a sense of order and rhythm in the built environment.',
+    imageUrl: 'https://images.unsplash.com/photo-1503387762-592dea58ef23?auto=format&fit=crop&q=80&w=800&h=600',
+    tags: [
+      { id: 't1', label: 'Architecture', type: 'user' },
+      { id: 't2', label: 'Systems', type: 'ai' }
+    ],
+    embedding: [0.1, 0.1]
+  },
+  {
+    id: 'n1-b',
+    carnetId: '4',
+    title: 'Parametric Grids',
+    date: 'Oct 27, 2024',
+    content: 'Parametricism allows us to deform traditional grid systems. By using mathematical algorithms, we can create fluid yet structured geometries that respond to environmental data.',
+    imageUrl: 'https://images.unsplash.com/photo-1511225070737-5af5ac9a690d?auto=format&fit=crop&q=80&w=800&h=600',
+    tags: [{ id: 't1', label: 'Geometry', type: 'user' }],
+    embedding: [0.12, 0.08]
+  },
+  {
+    id: 'n2',
+    carnetId: '4',
+    title: 'Sustainable Materiality',
+    date: 'Oct 24, 2024',
+    content: 'Exploring cross-laminated timber (CLT) as a sustainable alternative to concrete. Material choice is key to carbon-neutral construction. The warmth of wood contrasts with the coldness of steel.',
+    imageUrl: 'https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&q=80&w=800&h=600',
+    tags: [
+      { id: 't3', label: 'Materials', type: 'user' },
+      { id: 't4', label: 'Sustainabilty', type: 'ai' }
+    ],
+    embedding: [0.8, 0.8]
+  },
+  {
+    id: 'n2-b',
+    carnetId: '7',
+    title: 'Solar Passive Design',
+    date: 'Oct 25, 2024',
+    content: 'Using orientation to maximize natural heat. Sustainable architecture must prioritize passive systems over active ones. Thermal mass and insulation are critical factors.',
+    imageUrl: 'https://images.unsplash.com/photo-1509391366360-fe5bb5843e0c?auto=format&fit=crop&q=80&w=800&h=600',
+    tags: [{ id: 't4', label: 'Sustainabilty', type: 'user' }],
+    embedding: [0.85, 0.75]
+  },
+  {
+    id: 'n3',
+    carnetId: '4',
+    title: 'Light & Minimalist Space',
+    date: 'Oct 22, 2024',
+    content: 'Minimalism is about the subtraction of the unnecessary. Light becomes a material in itself. Reflections on glass and white surfaces create depth without clutter.',
+    imageUrl: 'https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&q=80&w=800&h=600',
+    tags: [
+      { id: 't5', label: 'Lighting', type: 'user' },
+      { id: 't6', label: 'Atmosphere', type: 'ai' }
+    ],
+    embedding: [0.2, 0.8]
+  },
+  {
+    id: 'n3-b',
+    carnetId: '6',
+    title: 'The Glass House Study',
+    date: 'Oct 23, 2024',
+    content: 'Analyzing the transparency of the Glass House. The boundary between interior and exterior is blurred. A pure expression of modernist ideals and minimal structure.',
+    imageUrl: 'https://images.unsplash.com/photo-1464938050520-ef2270bb8ce8?auto=format&fit=crop&q=80&w=800&h=600',
+    tags: [{ id: 't6', label: 'Modernism', type: 'user' }],
+    embedding: [0.25, 0.85]
+  },
+  {
+    id: 'bridge-1',
+    carnetId: '4',
+    title: 'Geometric Ecology',
+    date: 'Oct 28, 2024',
+    content: 'Can we use grid systems to optimize sustainable solar collection? This note bridges the gap between rigid geometry and ecological necessity. Structured sustainability.',
+    imageUrl: 'https://images.unsplash.com/photo-1464146072230-91cabc968276?auto=format&fit=crop&q=80&w=800&h=600',
+    tags: [{ id: 't1', label: 'Bridge', type: 'ai' }],
+    embedding: [0.45, 0.45] // Center point
+  }
+];