Initial commit: LlamaLink Go rewrite

Complete rewrite from Python/FastAPI to Go/Gin:
- Go backend: auth (API keys + bcrypt), llama.cpp subprocess manager,
  hot-swap multi-model, rate limiting, quota system, webhooks
- Vue 3 SPA admin panel (src/) with Tailwind CSS
- Deployment: Docker multi-stage, docker-compose, nginx, systemd
- GORM/SQLite models: ApiKey, Model, UsageLog, Quota, Webhook
- REST API: /api/v1/admin/* (keys, models, chat, usage, health)
- Embedded frontend via go:embed (build output at web/dist/)

Removed legacy Python artifacts (app/, tests/, pyproject.toml, etc.)

deploy/docker-compose.yml

@@ -0,0 +1,79 @@
+services:
+  llamalink:
+    build:
+      context: .
+      dockerfile: deploy/Dockerfile
+    container_name: llamalink-api
+    ports:
+      - "8000:8000"
+    environment:
+      - LLAMALINK_ENV=production
+      - DATABASE_URL=sqlite+aiosqlite:///./data/llamalink.db
+      - MANAGE_LLAMA_SERVER=true
+      - LLAMA_SERVER_HOST=127.0.0.1
+      - LLAMA_SERVER_PORT=8080
+      - LLAMA_SERVER_BIN=/usr/local/bin/llama-server
+      - LLAMA_SERVER_STARTUP_TIMEOUT=120
+      - MODEL_SWAP_COOLDOWN=2
+      - LLAMA_SERVER_STOP_TIMEOUT=10
+      - RATE_LIMIT_PER_MINUTE=60
+      - RATE_LIMIT_STORAGE=memory
+      - LOG_LEVEL=info
+      - LOG_FORMAT=json
+      - ADMIN_TOKEN=${ADMIN_TOKEN}
+    volumes:
+      - llamalink-data:/app/data
+      - ./models:/models:ro
+    restart: unless-stopped
+    networks:
+      - llamalink-net
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+
+  llama-runner:
+    image: ghcr.io/ggml-org/llama.cpp:server
+    container_name: llama-runner
+    environment:
+      - CUDA_VISIBLE_DEVICES=0
+    volumes:
+      - ./models:/models:ro
+    restart: unless-stopped
+    networks:
+      - llamalink-net
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+    deploy:
+      resources:
+        reservations:
+          devices:
+            - driver: nvidia
+              count: all
+              capabilities: [gpu]
+
+  nginx:
+    image: nginx:1.27-alpine
+    container_name: llamalink-nginx
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./deploy/nginx.conf:/etc/nginx/nginx.conf:ro
+    depends_on:
+      - llamalink
+    restart: unless-stopped
+    networks:
+      - llamalink-net
+
+volumes:
+  llamalink-data:
+
+networks:
+  llamalink-net:
+    driver: bridge