repo hygiene, tooling config, v0.2.0

- Untrack src/ocr_pipeline.egg-info from git, delete pyproject.toml~,
  stale run_008/run_009 dirs
- Ruff config moved to [tool.ruff.lint] (silences deprecation warning)
- Pre-commit: bump revs (ruff v0.14.13, mypy v1.18.1, hooks v6.0.0);
  drop redundant isort hook (ruff I already sorts imports)
- mypy: add ignore_missing_imports for optional deps; types-PyYAML in
  dev extras; python_version=3.12 for numpy 2.5 stubs compat; CI step
- Doctor: suppress paddle ccache UserWarning noise during check
- CHANGELOG dated for 0.2.0; README minimal-style rewrite with
  collapsible details sections
- Bump version to 0.2.0

tests/test_doctor.py

@@ -53,10 +53,22 @@ def test_check_paddle_warns_when_missing(monkeypatch) -> None:
 
 def test_check_torch_reports_backend(monkeypatch) -> None:
     monkeypatch.setattr("ocr_pipeline.doctor._has_module", lambda name: True)
-    fake_torch = type(
-        "T", (), {"cuda": type("C", (), {"is_available": staticmethod(lambda: False)})()}
-    )
-    monkeypatch.setattr("sys.modules", {"torch": fake_torch})
+
+    class FakeMPS:
+        @staticmethod
+        def is_available():  # type: ignore[no-untyped-def]
+            return False
+
+    class FakeBackends:
+        mps = FakeMPS
+
+    class FakeCuda:
+        @staticmethod
+        def is_available():  # type: ignore[no-untyped-def]
+            return False
+
+    fake_torch = type("T", (), {"cuda": FakeCuda, "backends": FakeBackends})
+    monkeypatch.setitem(__import__("sys").modules, "torch", fake_torch)
     r = check_torch()
     assert r.status == "ok"
     assert "backend=" in r.detail