feat(paths): remove SLOP_CONFIG env-var fallback; add --config CLI flag (FR2)

tests/test_test_sandbox.py

@@ -147,4 +147,48 @@ def test_sandbox_allows_pytest_cache_write() -> None:
   probe.write_text("ok", encoding="utf-8")
   assert probe.read_text(encoding="utf-8") == "ok"
  finally:
-  probe.unlink(missing_ok=True)
+  probe.unlink(missing_ok=True)
+
+
+def test_config_override_via_cli_flag(tmp_path) -> None:
+ """paths.set_config_override(path) makes get_config_path() return that path."""
+ from src import paths
+ config_path = tmp_path / "my_config.toml"
+ config_path.write_text("[ai]\nprovider='gemini'\n", encoding="utf-8")
+ original = paths._CONFIG_OVERRIDE
+ try:
+  paths.set_config_override(config_path)
+  assert paths.get_config_path() == config_path
+ finally:
+  paths.set_config_override(original)
+
+
+def test_paths_get_config_path_no_env_fallback(monkeypatch) -> None:
+ """Without an override AND without SLOP_CONFIG, get_config_path returns default."""
+ monkeypatch.delenv("SLOP_CONFIG", raising=False)
+ from src import paths
+ original = paths._CONFIG_OVERRIDE
+ try:
+  paths.set_config_override(None)
+  expected = Path(__file__).resolve().parent.parent / "config.toml"
+  assert paths.get_config_path() == expected
+ finally:
+  paths.set_config_override(original)
+
+
+def test_sloppy_py_parses_config_flag() -> None:
+ """sloppy.py has a --config argparse argument that calls set_config_override."""
+ import ast
+ sloppy = Path(__file__).resolve().parent.parent / "sloppy.py"
+ tree = ast.parse(sloppy.read_text(encoding="utf-8"))
+ found_config_arg = False
+ found_set_override_call = False
+ for node in ast.walk(tree):
+  if isinstance(node, ast.Constant) and node.value == "--config":
+   found_config_arg = True
+  if isinstance(node, ast.Call):
+   func = node.func
+   if isinstance(func, ast.Name) and func.id == "set_config_override":
+    found_set_override_call = True
+ assert found_config_arg, "sloppy.py must have a --config argparse argument"
+ assert found_set_override_call, "sloppy.py must call paths.set_config_override(args.config)"