Extract the storage layer into core/ (bundled in the integration)

Extract the storage layer into core/ (bundled in the integration)

custom_components/nestquest/dao_meta.py

@@ -1,44 +1,11 @@
-"""Typed DAO for the integration-owned ``nestquest_meta_state`` table.
+"""Re-export of :mod:`custom_components.nestquest.core.dao_meta` for the integration package.
 
-Generic persistent key/value bookkeeping that belongs to the
-integration itself rather than any domain table — currently the
-Feature 11 missed-sweep watermark.  Values are plain strings; callers
-interpret them.  All SQL for this table lives here per the feature
-guardrails, and every method runs through
-:class:`~.db.NestQuestDatabase` so nothing blocks the event loop.
+The meta-state DAO lives in
+:mod:`custom_components.nestquest.core.dao_meta` (extracted in task
+d0b691d8); this module re-exports it so existing
+``from .dao_meta import ...`` references inside the integration keep
+working.
 """
 from __future__ import annotations
 
-from .dao_children import _connection_lock
-from .db import NestQuestDatabase
-
-_TABLE = "nestquest_meta_state"
-
-
-class MetaStateDao:
-    """Typed async access to the ``nestquest_meta_state`` table."""
-
-    def __init__(self, database: NestQuestDatabase) -> None:
-        self._database = database
-
-    async def get(self, key: str) -> str | None:
-        """Return the stored value for ``key``, or None when absent."""
-        row = await self._database.fetch_one(
-            f"SELECT value FROM {_TABLE} WHERE key = ?", (key,)
-        )
-        return row[0] if row is not None else None
-
-    async def set(self, key: str, value: str) -> None:
-        """Upsert one key/value row atomically.
-
-        The write runs inside one transaction under the shared
-        connection lock, so a racing reader either sees the old value
-        or the fully-written new one, never a half-applied state.
-        """
-        async with _connection_lock(self._database):
-            async with self._database.transaction():
-                await self._database.execute(
-                    f"INSERT INTO {_TABLE} (key, value) VALUES (?, ?) "
-                    "ON CONFLICT (key) DO UPDATE SET value = excluded.value",
-                    (key, value),
-                )
+from .core.dao_meta import *  # noqa: F401,F403