feat(fase3): config-driven docs_dir + verdict_input on Project loader

tests/test_reference_domain.py

@@ -26,6 +26,18 @@ def test_every_project_well_formed(projects: tuple[Project, ...]) -> None:
         assert len(p.cost_items) >= 1
 
 
+def test_every_project_has_docs_dir_and_verdict_input(projects: tuple[Project, ...]) -> None:
+    """Step 2 (SC1 prep): docs_dir + verdict_input are config-driven per project. Each loaded
+    Project exposes a docs_dir resolved to an existing bundled directory, and a verdict_input
+    dict with exactly the decision + rationale keys. Removing the loader fields reddens this."""
+    import os
+
+    for p in projects:
+        assert p.docs_dir and os.path.isdir(p.docs_dir)
+        assert set(p.verdict_input) == {"decision", "rationale"}
+        assert p.verdict_input["decision"] and p.verdict_input["rationale"]
+
+
 def test_cost_item_total_is_quantity_times_unit_cost() -> None:
     item = CostItem(code="X", description="d", quantity=4.0, unit="m2", unit_cost=215.0)
     assert item.total_cost == pytest.approx(860.0)