Add local .env loading for inference

.gitignore

@@ -2,5 +2,6 @@
 .docker/
 __pycache__/
 .pytest_cache/
+.env
 inference_results.json
 *.egg-info/

inference.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import asyncio
 import json
 import os
+from pathlib import Path
 from typing import Any, List
 
 try:
@@ -16,6 +17,26 @@ from support_queue_env.client import SupportQueueEnv
 from support_queue_env.models import TaskCard, SupportQueueAction, SupportQueueObservation
 from support_queue_env.tasks import TASKS
 
+
+def load_dotenv_file(path: str = ".env") -> None:
+    env_path = Path(path)
+    if not env_path.exists():
+        return
+
+    for raw_line in env_path.read_text(encoding="utf-8").splitlines():
+        line = raw_line.strip()
+        if not line or line.startswith("#") or "=" not in line:
+            continue
+
+        key, value = line.split("=", 1)
+        key = key.strip()
+        value = value.strip().strip('"').strip("'")
+        if key and key not in os.environ:
+            os.environ[key] = value
+
+
+load_dotenv_file()
+
 API_BASE_URL = os.getenv("API_BASE_URL", "https://api.openai.com/v1")
 MODEL_NAME = os.getenv("MODEL_NAME", "gpt-4o-mini")
 API_KEY = os.getenv("API_KEY")