Refactor Terminal and AIAgent cleanup

tools/environments/modal.py

@@ -0,0 +1,49 @@
+"""Modal cloud execution environment wrapping mini-swe-agent's SwerexModalEnvironment."""
+
+import uuid
+
+from tools.environments.base import BaseEnvironment
+
+
+class ModalEnvironment(BaseEnvironment):
+    """Modal cloud execution via mini-swe-agent.
+
+    Wraps SwerexModalEnvironment and adds sudo -S support.
+    Async-safety patches are applied once before first use so Modal
+    works inside any event loop (Atropos, gateway, etc.).
+    """
+
+    _patches_applied = False
+
+    def __init__(self, image: str, cwd: str = "/root", timeout: int = 60):
+        super().__init__(cwd=cwd, timeout=timeout)
+
+        if not ModalEnvironment._patches_applied:
+            try:
+                from environments.patches import apply_patches
+                apply_patches()
+            except ImportError:
+                pass
+            ModalEnvironment._patches_applied = True
+
+        from minisweagent.environments.extra.swerex_modal import SwerexModalEnvironment
+        self._inner = SwerexModalEnvironment(
+            image=image, cwd=cwd, timeout=timeout,
+            startup_timeout=180.0, runtime_timeout=3600.0,
+        )
+
+    def execute(self, command: str, cwd: str = "", *,
+                timeout: int | None = None,
+                stdin_data: str | None = None) -> dict:
+        if stdin_data is not None:
+            marker = f"HERMES_EOF_{uuid.uuid4().hex[:8]}"
+            while marker in stdin_data:
+                marker = f"HERMES_EOF_{uuid.uuid4().hex[:8]}"
+            command = f"{command} << '{marker}'\n{stdin_data}\n{marker}"
+
+        exec_command = self._prepare_command(command)
+        return self._inner.execute(exec_command, cwd=cwd, timeout=timeout)
+
+    def cleanup(self):
+        if hasattr(self._inner, 'stop'):
+            self._inner.stop()