refactor(infra): eliminate globals + split check_pyproject in project-status (#247)

* refactor(infra): introduce RepoCtx, eliminate globals in project-status

* refactor(infra): split check_pyproject into 13 sub-functions

* test(infra): add RepoCtx + 13 sub-function tests, migrate cookiecutter tests

---------

Co-authored-by: opencode-agent <agent@opencode.local>

tests/test_cookiecutter_templates.py

@@ -461,16 +461,16 @@ def extra_context_value(render, key):
 
 
 def _run_status_checks(repo_root: Path, fast: bool = True) -> tuple[str, list[ps.CheckResult]]:
-    """Run the project-status checks against ``repo_root`` (in-process)."""
+    """Run the project-status checks against ``repo_root`` (in-process).
-    original_root = ps.REPO_ROOT
+
-    ps.REPO_ROOT = repo_root
+    Builds a ``RepoCtx`` rooted at ``repo_root`` so check-functions get an
-    try:
+    explicit context (no module-global mutation after the #242 refactor).
-        ptype = ps.detect_project_type()
+    """
-        groups = ps.run_all_checks(ptype, fast=fast)
+    ctx = ps.RepoCtx(root=repo_root, config=ps.load_config(repo_root))
+    ptype = ps.detect_project_type(ctx)
+    groups = ps.run_all_checks(ptype, ctx, fast=fast)
     all_checks = [c for g in groups for c in g.checks]
     report = ps.format_output(ptype, groups)
-    finally:
-        ps.REPO_ROOT = original_root
     return report, all_checks
 
 
@@ -553,12 +553,8 @@ def test_infra_checks_present(render):
 def test_fullstack_passes_project_status_structure(render):
     """Fullstack is detected as fullstack (backend/ + frontend/ present)."""
     ptype = ps.ProjectType.FULLSTACK
-    original_root = ps.REPO_ROOT
+    ctx = ps.RepoCtx(root=render, config=ps.load_config(render))
-    ps.REPO_ROOT = render
+    detected = ps.detect_project_type(ctx)
-    try:
-        detected = ps.detect_project_type()
-    finally:
-        ps.REPO_ROOT = original_root
     assert detected == ptype
     _, checks = _run_status_checks(render)
     by_name = {c.name: c for c in checks}