feat: Major UI improvements and SSH-only mode

- Tool rendering: Unified tool_use/tool_result cards with collapsible results
- Special rendering for WebSearch, WebFetch, Task, Write tools
- File upload support with drag & drop
- Permission dialog for tool approvals
- Status bar with session stats and permission mode toggle
- SSH-only mode: Removed local container execution
- Host switching disabled during active session with visual indicator
- Directory browser: Browse remote directories via SSH
- Recent directories dropdown with localStorage persistence
- Follow-up messages during generation
- Improved scroll behavior with "back to bottom" button

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docker-compose.dev.yml

@@ -0,0 +1,49 @@
+services:
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: claude-webui-backend
+    restart: unless-stopped
+    network_mode: host
+    volumes:
+      - /home/sumdex/.local/share/claude:/home/node/.local/share/claude:ro
+      - ./config/.claude:/home/node/.claude:rw
+      - ./config/.config/claude:/home/node/.config/claude:rw
+      - ./config/hosts.json:/app/config/hosts.json:ro
+      - /home/sumdex/.ssh/id_rsa:/home/node/.ssh/id_rsa:ro
+      - /home/sumdex/.ssh/known_hosts:/home/node/.ssh/known_hosts:ro
+      - /home/sumdex/projects:/projects:rw
+      - /home/sumdex/docker:/docker:rw
+      - /opt/stacks:/stacks:rw
+    environment:
+      - NODE_ENV=production
+      - HOST=100.105.142.13
+      - PORT=3001
+      - PATH=/home/node/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile.dev
+    container_name: claude-webui-frontend-dev
+    restart: unless-stopped
+    ports:
+      - "100.105.142.13:3000:5173"
+    volumes:
+      - ./frontend/src:/app/src:ro
+      - ./frontend/index.html:/app/index.html:ro
+      - ./frontend/vite.config.js:/app/vite.config.js:ro
+      - ./frontend/tailwind.config.js:/app/tailwind.config.js:ro
+      - ./frontend/postcss.config.js:/app/postcss.config.js:ro
+    environment:
+      - VITE_WS_URL=ws://100.105.142.13:3001
+      - VITE_API_URL=http://100.105.142.13:3001
+    depends_on:
+      - backend
+    networks:
+      - claude-webui
+
+networks:
+  claude-webui:
+    name: claude-webui