fix: improve note interactions and markdown LaTeX support

## Bug Fixes

### Note Card Actions
- Fix broken size change functionality (missing state declaration)
- Implement React 19 useOptimistic for instant UI feedback
- Add startTransition for non-blocking updates
- Ensure smooth animations without page refresh
- All note actions now work: pin, archive, color, size, checklist

### Markdown LaTeX Rendering
- Add remark-math and rehype-katex plugins
- Support inline equations with dollar sign syntax
- Support block equations with double dollar sign syntax
- Import KaTeX CSS for proper styling
- Equations now render correctly instead of showing raw LaTeX

## Technical Details

- Replace undefined currentNote references with optimistic state
- Add optimistic updates before server actions for instant feedback
- Use router.refresh() in transitions for smart cache invalidation
- Install remark-math, rehype-katex, and katex packages

## Testing

- Build passes successfully with no TypeScript errors
- Dev server hot-reloads changes correctly

docker-compose.yml

@@ -0,0 +1,89 @@
+version: '3.8'
+
+services:
+  # ============================================
+  # keep-notes - Next.js Web Application
+  # ============================================
+  keep-notes:
+    build:
+      context: ./keep-notes
+      dockerfile: Dockerfile
+    container_name: memento-web
+    ports:
+      - "3000:3000"
+    environment:
+      - DATABASE_URL=file:/app/prisma/dev.db
+      - NEXTAUTH_SECRET=${NEXTAUTH_SECRET:-changethisinproduction}
+      - NEXTAUTH_URL=${NEXTAUTH_URL:-http://localhost:3000}
+      - NODE_ENV=production
+
+      # Email Configuration (SMTP)
+      - SMTP_HOST=${SMTP_HOST}
+      - SMTP_PORT=${SMTP_PORT:-587}
+      - SMTP_USER=${SMTP_USER}
+      - SMTP_PASS=${SMTP_PASS}
+      - SMTP_FROM=${SMTP_FROM:-noreply@memento.app}
+
+      # AI Providers
+      - OPENAI_API_KEY=${OPENAI_API_KEY}
+      - OLLAMA_API_URL=${OLLAMA_API_URL:-http://ollama:11434}
+    volumes:
+      - db-data:/app/prisma
+      - uploads-data:/app/public/uploads
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3000"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+    networks:
+      - memento-network
+
+  # ============================================
+  # mcp-server - MCP Protocol Server
+  # ============================================
+  mcp-server:
+    build:
+      context: ./mcp-server
+      dockerfile: Dockerfile
+    container_name: memento-mcp
+    volumes:
+      - db-data:/app/db
+    depends_on:
+      - keep-notes
+    restart: unless-stopped
+    networks:
+      - memento-network
+
+  # ============================================
+  # Ollama - Local LLM Provider (Optional)
+  # ============================================
+  ollama:
+    image: ollama/ollama:latest
+    container_name: memento-ollama
+    ports:
+      - "11434:11434"
+    volumes:
+      - ollama-data:/root/.ollama
+    restart: unless-stopped
+    networks:
+      - memento-network
+
+# ============================================
+# Volumes - Data Persistence
+# ============================================
+volumes:
+  db-data:
+    driver: local
+  uploads-data:
+    driver: local
+  ollama-data:
+    driver: local
+
+# ============================================
+# Networks - Service Communication
+# ============================================
+networks:
+  memento-network:
+    driver: bridge