Lowered minimum Python version to 3.12 and added CI matrix for testing 3.12/3.13/3.14.

tests/conftest.py

@@ -12,6 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import annotations
+
 from typing import TYPE_CHECKING
 
 import pytest

tests/test_commands.py

@@ -21,6 +21,8 @@ transaction commit/rollback, built-in commands), ModuleCommands
 (ownership-scoped wrapper), and CommandContext.
 """
 
+from __future__ import annotations
+
 import asyncio
 import logging
 import types

tests/test_events.py

@@ -20,6 +20,8 @@ command dispatch phase), ModuleEvents (ownership checks), and
 EventContext/PropagationState.
 """
 
+from __future__ import annotations
+
 import asyncio
 import logging
 import types

tests/test_placeholders.py

@@ -18,6 +18,8 @@ Tests exercise the public API (process_placeholders) with realistic
 templates and user scenarios.
 """
 
+from __future__ import annotations
+
 import random
 from datetime import UTC, datetime
 from typing import TYPE_CHECKING, Any

tests/test_storage.py

@@ -14,6 +14,8 @@
 
 """Tests for ModuleStorage — the async SQLite storage layer."""
 
+from __future__ import annotations
+
 import asyncio
 from typing import TYPE_CHECKING, Any