fix(snippets): satisfy the parity guards the drift check tripped

Two CI failures, both the guards working as intended rather than defects
in them:

- The MCP tool-name manifest and the REST route/service parity lists are
  explicit, so a new capability has to be added to both surfaces or the
  test fails. verify_snippet / verify_snippet_route / record_verification
  added, plus an assertion that the `verification` filter reaches both
  callers — a verdict an agent records must be visible to the human
  looking at the same corpus, or the two surfaces disagree about what's
  rotten (rule #33).

- vue-tsc rejected two object-literal lookups keyed by the status union:
  `status` includes "ok" and "unverified", and an object literal has to
  enumerate every member even just to say "nothing to show for these".
  Typed as Record<string, string>, which is what the ?? "" fallback
  already assumed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UaYUaouG9jjhATyuxCKrQs

tests/test_routes_snippets.py

@@ -20,6 +20,7 @@ def test_snippet_handlers_callable():
     for name in (
         "list_snippets_route", "create_snippet_route", "get_snippet_route",
         "update_snippet_route", "delete_snippet_route", "merge_snippet_route",
+        "verify_snippet_route",
     ):
         assert callable(getattr(routes, name))
 
@@ -29,7 +30,7 @@ def test_service_functions_take_user_id():
     from scribe.services import snippets as svc
     for fn_name in (
         "create_snippet", "list_snippets", "get_snippet", "update_snippet",
-        "delete_snippet", "merge_snippets",
+        "delete_snippet", "merge_snippets", "record_verification",
     ):
         fn = getattr(svc, fn_name)
         assert callable(fn)
@@ -45,7 +46,7 @@ def test_agent_and_web_surfaces_stay_at_parity():
     from scribe.routes import snippets as routes
 
     # Every write verb the web surface offers, the agent surface offers too.
-    for verb in ("create", "get", "list", "update", "delete", "merge"):
+    for verb in ("create", "get", "list", "update", "delete", "merge", "verify"):
         assert callable(getattr(tools, f"{verb}_snippets", None) or
                         getattr(tools, f"{verb}_snippet", None)), f"MCP lacks {verb}"
 
@@ -61,6 +62,12 @@ def test_agent_and_web_surfaces_stay_at_parity():
         assert "system_ids" in inspect.getsource(route)
     assert "find_duplicate_note" in inspect.getsource(routes.create_snippet_route)
 
+    # The drift check (#2086) reaches both: recording a verdict, and filtering
+    # the list by one. A verdict an agent records has to be visible to the human
+    # looking at the same corpus, or the two surfaces disagree about what's rotten.
+    assert "verification" in inspect.signature(tools.list_snippets).parameters
+    assert "verification" in inspect.getsource(routes.list_snippets_route)
+
 
 def test_project_scoping_reaches_every_caller():
     """A snippet search has to be narrowable to one project from both surfaces."""