Add .env file loading — cp .env.example .env and edit

docgen.py

@@ -4,6 +4,16 @@ import requests
 import os
 import concurrent.futures
 import time
+from pathlib import Path
+
+# Load .env if present
+_env_file = Path(__file__).parent / ".env"
+if _env_file.exists():
+    for line in _env_file.read_text().splitlines():
+        line = line.strip()
+        if line and not line.startswith("#") and "=" in line:
+            key, _, val = line.partition("=")
+            os.environ.setdefault(key.strip(), val.strip())
 
 # Backend: "ollama" or "openai"
 LLM_BACKEND = os.environ.get("LLM_BACKEND", "ollama")