test: add pytest verification suite and gitea ci workflow

src/runtime.py

@@ -14,9 +14,10 @@ from .utils import setup_artifacts, setup_logger
 try:
     import pyautogui
 except Exception as import_exc:
-    raise RuntimeError(
-        "pyautogui is required. Install dependencies with: pip install pyautogui pillow"
-    ) from import_exc
+    pyautogui = None  # type: ignore[assignment]
+    _PYAUTOGUI_IMPORT_ERROR = import_exc
+else:
+    _PYAUTOGUI_IMPORT_ERROR = None
 
 
 def create_openai_client(api_key: str) -> OpenAI:
@@ -34,6 +35,12 @@ def run_job(
     event_callback: Callable[[dict[str, Any]], None] | None = None,
     logger: logging.Logger | None = None,
 ) -> tuple[AgentResult, RunArtifacts]:
+    if pyautogui is None:
+        raise RuntimeError(
+            "pyautogui is required for runtime execution. "
+            "Install dependencies and ensure GUI access. "
+            f"Import error: {_PYAUTOGUI_IMPORT_ERROR}"
+        )
     pyautogui.FAILSAFE = not no_failsafe
     pyautogui.PAUSE = 0.05
 
@@ -54,4 +61,3 @@ def run_job(
     result = agent.run(objective)
     active_logger.info("Run finished. completed=%s elapsed=%.2fs", result.completed, result.ended_at - result.started_at)
     return result, artifacts
-