Update hf_demo.py

hf_demo.py

@@ -4,7 +4,6 @@ Compatible with Pydantic V2
 """
 
 import os
-# 🔥 CRITICAL: Ensure we use the correct port from environment
 import sys
 import json
 import uuid
@@ -12,7 +11,6 @@ import hashlib
 import logging
 import sqlite3
 import requests
-import fcntl
 from datetime import datetime
 from typing import Dict, List, Optional, Any, Tuple
 from contextlib import contextmanager
@@ -21,21 +19,11 @@ from enum import Enum
 # FastAPI and Pydantic
 from fastapi import FastAPI, HTTPException, Depends, status
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import JSONResponse
 from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
 from pydantic import BaseModel, Field, field_validator
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
-# ============== SINGLE INSTANCE LOCK (per port) ==============
-PORT = int(os.environ.get('PORT', 7860))
-LOCK_FILE = f'/tmp/arf_app_{PORT}.lock'
-try:
-    lock_fd = open(LOCK_FILE, 'w')
-    fcntl.flock(lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
-except (IOError, OSError):
-    print(f"Another instance is already running on port {PORT}. Exiting.")
-    sys.exit(1)
-# ==============================================================
-
 # ============== CONFIGURATION (Pydantic V2) ==============
 class Settings(BaseSettings):
     """Centralized configuration using Pydantic Settings V2"""
@@ -50,7 +38,7 @@ class Settings(BaseSettings):
         alias='DATA_DIR'
     )
     
-    # Lead generation (kept for reference, but UI removed)
+    # Lead generation
     lead_email: str = "petter2025us@outlook.com"
     calendly_url: str = "https://calendly.com/petter2025us/arf-demo"
     
@@ -113,9 +101,8 @@ class LeadSignal(str, Enum):
     CONFIDENCE_LOW = "confidence_low"
     REPEATED_FAILURE = "repeated_failure"
 
-# ============== BAYESIAN ENGINE (unchanged) ==============
+# ============== BAYESIAN ENGINE ==============
 class BayesianRiskEngine:
-    # ... (keep the full class as before) ...
     def __init__(self):
         self.prior_alpha = 2.0
         self.prior_beta = 5.0
@@ -269,7 +256,7 @@ class BayesianRiskEngine:
         except sqlite3.Error as e:
             logger.error(f"Failed to record outcome: {e}")
 
-# ============== POLICY ENGINE (unchanged) ==============
+# ============== POLICY ENGINE ==============
 class PolicyEngine:
     def __init__(self):
         self.config = {
@@ -381,7 +368,7 @@ class PolicyEngine:
             return True
         return False
 
-# ============== RAG MEMORY (unchanged) ==============
+# ============== RAG MEMORY ==============
 class RAGMemory:
     def __init__(self):
         self.db_path = f"{settings.data_dir}/memory.db"
@@ -666,6 +653,17 @@ risk_engine = BayesianRiskEngine()
 policy_engine = PolicyEngine()
 memory = RAGMemory()
 
+# ============== ROOT ENDPOINT (for health checks) ==============
+@app.get("/")
+async def root():
+    """Root endpoint for platform health checks"""
+    return {
+        "service": "ARF OSS API",
+        "version": "3.3.9",
+        "status": "operational",
+        "docs": "/docs"
+    }
+
 # ============== API ENDPOINTS ==============
 
 @app.get("/health")