Remove references to "v4" throughout the code and documentation

tests/test_meta_contract_guards.py

@@ -16,11 +16,11 @@ ACTIVE_CONTRACT_FILES = (
     ".github/instructions/error-handling.instructions.md",
     ".github/skills/python-code-reviewer/skill.md",
     ".github/skills/evidence-provenance-auditor/skill.md",
-    "docs/ver4/index_v4.md",
-    "docs/ver4/architecture_v4.md",
-    "docs/ver4/requirements_v4.md",
-    "docs/ver4/schema_v4.md",
-    "docs/ver4/error_handling_v4.md",
+    "docs/index.md",
+    "docs/architecture.md",
+    "docs/requirements.md",
+    "docs/schema.md",
+    "docs/error_handling.md",
     "docs/ui/README.md",
 )
 
@@ -50,7 +50,7 @@ def test_active_contract_files_are_present():
 
 
 def test_no_legacy_authority_references_in_active_contract_files():
-    """Active contracts must not route authority through removed V4 revision trees."""
+    """Active contracts must not route authority through removed revision trees."""
     violations: dict[str, list[str]] = {}
     for relative_path in ACTIVE_CONTRACT_FILES:
         text = _read(relative_path)
@@ -64,31 +64,31 @@ def test_canonical_authority_references_are_present():
     """Critical instruction and skill files must keep canonical references explicit."""
     required_fragments = {
         ".github/instructions/services.instructions.md": (
-            "docs/ver4/",
+            "docs/",
             "./error-handling.instructions.md",
             "src/transcription/db/models.py",
-            "docs/ver4/schema_v4.md",
+            "docs/schema.md",
             "append-only",
         ),
         ".github/instructions/ui.instructions.md": (
-            "docs/ver4/",
+            "docs/",
             "./error-handling.instructions.md",
             "src/transcription/db/models.py",
-            "docs/ver4/schema_v4.md",
+            "docs/schema.md",
         ),
         ".github/instructions/error-handling.instructions.md": (
-            "docs/ver4/error_handling_v4.md",
-            "docs/ver4/requirements_v4.md",
+            "docs/error_handling.md",
+            "docs/requirements.md",
         ),
         ".github/skills/python-code-reviewer/skill.md": (
-            "docs/ver4/*",
-            "docs/ver4/schema_v4.md",
+            "docs/*",
+            "docs/schema.md",
             ".github/instructions/error-handling.instructions.md",
         ),
         ".github/skills/evidence-provenance-auditor/skill.md": (
-            "docs/ver4/schema_v4.md",
-            "docs/ver4/requirements_v4.md",
-            "docs/ver4/error_handling_v4.md",
+            "docs/schema.md",
+            "docs/requirements.md",
+            "docs/error_handling.md",
         ),
     }