Add CLI, Docker setup, and quick start guide

- CLI tool for testing (cli.py)
- Docker Compose for easy deployment
- Dockerfile for backend
- QUICKSTART.md with setup instructions

Ready to deploy! Run: python cli.py or docker-compose up

cli.py

@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+"""
+Grimlock CLI - Simple command line interface for testing
+"""
+
+import asyncio
+import os
+import sys
+from pathlib import Path
+
+# Add backend to path
+sys.path.insert(0, str(Path(__file__).parent / "backend"))
+
+from core.ai_client import AIClient
+from core.context_manager import ContextManager
+from dotenv import load_dotenv
+
+load_dotenv("backend/.env")
+
+async def main():
+    print("=" * 60)
+    print("GRIMLOCK CLI")
+    print("=" * 60)
+    
+    # Initialize
+    api_key = os.getenv("ANTHROPIC_API_KEY")
+    if not api_key:
+        print("ERROR: ANTHROPIC_API_KEY not set")
+        print("Copy backend/.env.example to backend/.env and add your API key")
+        return
+    
+    print("\nInitializing...")
+    context_manager = ContextManager("backend/context")
+    context_manager.load_all_context()
+    print(f"Context loaded: {context_manager.get_summary()}")
+    
+    ai_client = AIClient(api_key=api_key)
+    print("AI client ready")
+    
+    # Interactive loop
+    print("\nGrimlock is online. Type 'exit' to quit.\n")
+    
+    messages = []
+    
+    while True:
+        try:
+            user_input = input("You: ").strip()
+            
+            if not user_input:
+                continue
+            
+            if user_input.lower() in ['exit', 'quit', 'q']:
+                print("\nGoodbye!")
+                break
+            
+            # Add user message
+            messages.append({"role": "user", "content": user_input})
+            
+            # Get context
+            context = context_manager.get_context_for_query(user_input)
+            system_prompt = context_manager.get_system_prompt()
+            if context:
+                system_prompt += f"\n\n# Company Context\n{context}"
+            
+            # Get response
+            print("\nGrimlock: ", end="", flush=True)
+            response = await ai_client.chat(
+                messages=messages,
+                system_prompt=system_prompt
+            )
+            print(response)
+            print()
+            
+            # Add assistant message
+            messages.append({"role": "assistant", "content": response})
+            
+        except KeyboardInterrupt:
+            print("\n\nGoodbye!")
+            break
+        except Exception as e:
+            print(f"\nError: {e}\n")
+
+if __name__ == "__main__":
+    asyncio.run(main())