Route agents to owning application files

tests/test_agent.py

@@ -15,6 +15,22 @@ def test_aider_command_cannot_mutate_git_configuration_or_send_analytics() -> No
     assert command[-4:] == ["--edit-format", "udiff", "--timeout", "180"]
 
 
+def test_aider_command_adds_existing_routed_files(tmp_path) -> None:
+    git_dir = tmp_path / ".git"
+    git_dir.mkdir()
+    controller = tmp_path / "app/Http/Controllers/ChatController.php"
+    controller.parent.mkdir(parents=True)
+    controller.write_text("<?php\n")
+
+    command = AiderAgent(settings()).command(
+        git_dir / "task.txt",
+        ("app/Http/Controllers/ChatController.php", "missing.php"),
+    )
+
+    assert command[-2:] == ["--file", "app/Http/Controllers/ChatController.php"]
+    assert "missing.php" not in command
+
+
 def test_aider_environment_does_not_include_database_credentials(tmp_path, monkeypatch) -> None:
     config = settings(workspace_root=tmp_path)
     workspace = tmp_path / "repo"