[chore] remove all remaining type:ignore suppressions from tests/

Converts 115 `# type: ignore[...]` suppressions across 23 test files to
no-suppression patterns (helper-return widening to Any, local Any aliases,
cc:Any aliases, cast at narrow call sites, typed fixtures) so the hard
no-type:ignore convention holds across tests/. No test logic or assertions
changed — only mock-wiring mechanics and type annotations.

Gate: ruff check tests/ clean; mypy tests/ (538 files) clean; 176 changed-file
tests pass. Zero real suppressions remain (the 7 grep hits are 3 hygiene-
checker string-literal test inputs and 4 prose mentions in comments).

tests/integration/services/test_dep_update_probe.py

@@ -8,7 +8,7 @@ or committing/pushing. Fail-safe: a null/failing command returns False.
 from __future__ import annotations
 
 import subprocess
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Any
 from unittest.mock import AsyncMock, MagicMock
 
 import pytest
@@ -36,9 +36,9 @@ def _make_read_clone(tmp_path: Path) -> Path:
     return repo
 
 
-def _svc(read_clone: Path) -> WorkspaceService:
-    svc = WorkspaceService.__new__(WorkspaceService)
-    svc.ensure_read_clone = AsyncMock(return_value=read_clone)  # type: ignore[method-assign]
+def _svc(read_clone: Path) -> Any:
+    svc: Any = WorkspaceService.__new__(WorkspaceService)
+    svc.ensure_read_clone = AsyncMock(return_value=read_clone)
     return svc
 
 

tests/integration/test_migration_013_drop_role.py

@@ -7,12 +7,17 @@ class. The migration drops the unused one with a safety check.
 
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
 import pytest
 from sqlalchemy import text
 
+if TYPE_CHECKING:
+    from sqlalchemy.ext.asyncio import AsyncSession
+
 
 @pytest.mark.asyncio
-async def test_no_column_uses_role_type(db_session) -> None:  # type: ignore[no-untyped-def]
+async def test_no_column_uses_role_type(db_session: AsyncSession) -> None:
     """Before dropping, confirm no column actually uses the `role` type.
 
     If this ever fails it means a column was added that references the
@@ -33,7 +38,7 @@ async def test_no_column_uses_role_type(db_session) -> None:  # type: ignore[no-
 
 
 @pytest.mark.asyncio
-async def test_role_enum_dropped_after_upgrade(db_session) -> None:  # type: ignore[no-untyped-def]
+async def test_role_enum_dropped_after_upgrade(db_session: AsyncSession) -> None:
     """After migration 013 runs, only `agentrole` remains; `role` is gone."""
     # This test runs against a db where migrations have been applied to head.
     # The conftest fixture should handle that — verify by reading the

tests/integration/test_migration_014_drop_pm_approvals.py

@@ -7,12 +7,17 @@ tracking, RAG context). Only pm_approvals is truly orphaned.
 
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
 import pytest
 from sqlalchemy import text
 
+if TYPE_CHECKING:
+    from sqlalchemy.ext.asyncio import AsyncSession
+
 
 @pytest.mark.asyncio
-async def test_pm_approvals_dropped(db_session) -> None:  # type: ignore[no-untyped-def]
+async def test_pm_approvals_dropped(db_session: AsyncSession) -> None:
     """pm_approvals column is gone from the tasks table."""
     result = await db_session.execute(
         text(
@@ -25,7 +30,9 @@ async def test_pm_approvals_dropped(db_session) -> None:  # type: ignore[no-unty
 
 
 @pytest.mark.asyncio
-async def test_quick_context_and_proactive_context_remain(db_session) -> None:  # type: ignore[no-untyped-def]
+async def test_quick_context_and_proactive_context_remain(
+    db_session: AsyncSession,
+) -> None:
     """quick_context and proactive_context MUST remain — they're actively used."""
     result = await db_session.execute(
         text(

tests/integration/test_migration_observability.py

@@ -10,12 +10,17 @@ discipline); these assertions guard the resulting schema shape.
 
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
 import pytest
 from sqlalchemy import text
 
+if TYPE_CHECKING:
+    from sqlalchemy.ext.asyncio import AsyncSession
+
 
 @pytest.mark.asyncio
-async def test_revision_count_defaults_to_zero(db_session) -> None:  # type: ignore[no-untyped-def]
+async def test_revision_count_defaults_to_zero(db_session: AsyncSession) -> None:
     result = await db_session.execute(
         text(
             "SELECT column_default, is_nullable "
@@ -30,7 +35,7 @@ async def test_revision_count_defaults_to_zero(db_session) -> None:  # type: ign
 
 
 @pytest.mark.asyncio
-async def test_audit_log_query_index_exists(db_session) -> None:  # type: ignore[no-untyped-def]
+async def test_audit_log_query_index_exists(db_session: AsyncSession) -> None:
     result = await db_session.execute(
         text(
             "SELECT indexname FROM pg_indexes "