- added three iwm articles as test data

- added simple webview and FastAPI server

server.py

@@ -0,0 +1,60 @@
+"""
+FastAPI server for Local RAG with chat GUI.
+Run with: uvicorn server:app --reload
+"""
+from pathlib import Path
+
+from fastapi import FastAPI, HTTPException
+from fastapi.responses import HTMLResponse
+from pydantic import BaseModel
+
+from local_rag import LocalRAG
+
+# Initialize RAG once at startup
+VECTORSTORE_PATH = "./vectorstore"
+OLLAMA_MODEL = "mistral:7b"
+rag = LocalRAG(vectorstore_path=VECTORSTORE_PATH, ollama_model=OLLAMA_MODEL)
+
+app = FastAPI(title="Local RAG Chat", version="1.0.0")
+
+
+class ChatRequest(BaseModel):
+    message: str
+
+
+class ChatResponse(BaseModel):
+    answer: str
+    error: str | None = None
+
+
+@app.get("/", response_class=HTMLResponse)
+def chat_view():
+    """Serve the chat GUI."""
+    html_path = Path(__file__).parent / "templates" / "chat.html"
+    if not html_path.exists():
+        raise HTTPException(status_code=500, detail="Chat template not found")
+    return HTMLResponse(content=html_path.read_text(encoding="utf-8"))
+
+
+@app.post("/api/chat", response_model=ChatResponse)
+def chat(request: ChatRequest):
+    """Handle a chat message and return the RAG answer."""
+    if not request.message or not request.message.strip():
+        return ChatResponse(answer="", error="Message cannot be empty")
+    try:
+        answer = rag.query(request.message.strip())
+        return ChatResponse(answer=answer)
+    except Exception as e:
+        return ChatResponse(answer="", error=str(e))
+
+
+@app.get("/api/health")
+def health():
+    """Health check and vector store status."""
+    has_docs = rag.vectorstore is not None
+    return {"status": "ok", "vectorstore_loaded": has_docs}
+
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=8000)