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

src/models.py

@@ -191,8 +191,6 @@ def _save_config_to_disk(config: dict[str, Any]) -> None:
  # only when the user actually saves config.
  import tomli_w
  config = _clean_nones(config)
- sys.stderr.write(f"[DEBUG] Saving config. Theme: {config.get('theme')}\n")
- sys.stderr.flush()
  with open(get_config_path(), "wb") as f:
   tomli_w.dump(config, f)
 

src/paths.py

@@ -49,12 +49,35 @@ from typing  import Optional, Any
 
 _RESOLVED: dict[str, Path] = {}
 
+_CONFIG_OVERRIDE: Path | None = None
+
+
+def set_config_override(path: Path | None) -> None:
+ """
+ Set the active config.toml path. Pass None to use the default
+ <project_root>/config.toml. The CLI --config flag is the ONLY
+ supported override mechanism; the historical SLOP_CONFIG env var
+ fallback has been removed (per test_sandbox_hardening_20260619 FR2).
+ [C: sloppy.py:main, tests/conftest.py]
+ """
+ global _CONFIG_OVERRIDE
+ _CONFIG_OVERRIDE = path
+ _RESOLVED.clear()
+
+
 def get_config_path() -> Path:
  """
- [C: tests/test_paths.py:test_default_paths]
+ Returns the active config.toml. If a CLI override is set, returns it.
+ Otherwise returns the default <project_root>/config.toml.
+ [C: src/app_controller.py:AppController.load_config,
+    src/app_controller.py:AppController.init_state,
+    src/models.py:_load_config_from_disk,
+    tests/test_test_sandbox.py]
  """
+ if _CONFIG_OVERRIDE is not None:
+  return _CONFIG_OVERRIDE
  root_dir = Path(__file__).resolve().parent.parent
- return Path(os.environ.get("SLOP_CONFIG", root_dir / "config.toml"))
+ return root_dir / "config.toml"
 
 def get_global_presets_path() -> Path:
  """