feat: add tatlock stack for homelab butler API

- OpenAI-compatible API server with LLM agent orchestration
- Port 8000, connects to docker-dataplane network
- Integrates with ollama, searxng, redis-shared services
- Watchtower auto-update enabled

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

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

stacks/tatlock.yml

@@ -0,0 +1,67 @@
+version: '3.8'
+
+# Tatlock - The Homelab Butler
+# Purpose: OpenAI-compatible API server with LLM agent orchestration
+# Port: 8000 (API)
+# Network: docker-dataplane
+# Image: git.schweitz.net/jpmschweitzer/tatlock (private registry)
+
+services:
+  tatlock:
+    image: git.schweitz.net/jpmschweitzer/tatlock:latest
+    container_name: tatlock
+    restart: unless-stopped
+
+    ports:
+      - "8000:8000"
+
+    environment:
+      - ENVIRONMENT=production
+      - LOG_LEVEL=INFO
+      - API_HOST=0.0.0.0
+      - API_PORT=8000
+      # Ollama (shared service)
+      - OLLAMA_HOST=http://ollama:11434
+      - OLLAMA_DEFAULT_MODEL=mistral-nemo:latest
+      - OLLAMA_TIMEOUT=120
+      # SearXNG (optional, shared service)
+      - SEARXNG_HOST=http://searxng:8080
+      - SEARXNG_TIMEOUT=30
+      # Redis (optional, shared service)
+      - REDIS_HOST=redis-shared
+      - REDIS_PORT=6379
+      - REDIS_DB=6
+      - REDIS_TIMEOUT=5
+      # Features
+      - ENABLE_BENCHMARKS=true
+      - CORS_ORIGINS=*
+      - PYTHONPATH=/app
+
+    volumes:
+      - /home/jpmschweitzer/docker-data/tatlock/logs:/app/logs
+
+    networks:
+      - docker-dataplane
+
+    deploy:
+      resources:
+        limits:
+          cpus: '1.0'
+          memory: 1G
+        reservations:
+          memory: 256M
+
+    labels:
+      - "com.centurylinklabs.watchtower.enable=true"
+
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 30s
+
+networks:
+  docker-dataplane:
+    external: true
+    name: docker-dataplane