The integration no longer owns a database

The HA integration is now purely a client of the NestQuest API service
(Feature 18): the API owns the SQLite file, the migrations, and every
business rule, so keeping a second copy of that ownership inside the
integration meant two sources of truth for household state, dead
wiring (the startup backfill, the day-rollover materialization and
sweep listeners, the corrupt-DB handling, the admin-allowlist seeding)
and settings keys nothing consumes any more.

Removed the integration's re-export/DB shim modules (db, store,
migrations, schema, the five DAOs, completion, children,
quest_definitions, admin_allowlist, presence, presence_management,
materialize, recurrence, events, sweep); the bundled domain package at
custom_components/nestquest/core/ is untouched and remains the single
home of those engines.  Setup now builds only the API client, the
snapshot coordinator, and the SSE subscription, registers the one
complete_quest proxy, and forwards the platforms.  The options flow
keeps only the keys the client itself consumes (API base URL + panel
token, update interval, staleness, panel idle timeout); the horizon,
rollover, notification and admin-allowlist settings moved out with the
database (the API's settings store owns horizon/rollover, and the
automations take their behaviour from blueprint inputs).  The
integration-plane tests now script the panel route's payloads and SSE
frames instead of seeding a local database; the core-plane tests keep
their coverage with imports pointed at core directly.

tests/test_materialize.py

@@ -6,29 +6,29 @@ import datetime
 
 import pytest
 
-from custom_components.nestquest.dao_children import ChildrenDao
+from custom_components.nestquest.core.dao_children import ChildrenDao
 from custom_components.nestquest.const import DEFAULT_HORIZON_DAYS
-from custom_components.nestquest.dao_instances import (
+from custom_components.nestquest.core.dao_instances import (
     CompletionEventsDao,
     QuestInstancesDao,
 )
-from custom_components.nestquest.dao_presence import PresenceSchedulesDao
-from custom_components.nestquest.dao_rules import (
+from custom_components.nestquest.core.dao_presence import PresenceSchedulesDao
+from custom_components.nestquest.core.dao_rules import (
     QuestDefinitionsDao,
     schedule_rule_to_storage,
 )
-from custom_components.nestquest.db import NestQuestDatabase
-from custom_components.nestquest.materialize import (
+from custom_components.nestquest.core.db import NestQuestDatabase
+from custom_components.nestquest.core.materialize import (
     materialize,
     regenerate_for_child,
     regenerate_for_definition,
 )
-from custom_components.nestquest.migrations import apply_migrations
-from custom_components.nestquest.quest_definitions import (
+from custom_components.nestquest.core.migrations import apply_migrations
+from custom_components.nestquest.core.quest_definitions import (
     create_quest_definition,
     edit_quest_definition,
 )
-from custom_components.nestquest.recurrence import (
+from custom_components.nestquest.core.recurrence import (
     RuleType,
     ScheduleRule,
     occurs_on,
@@ -505,7 +505,7 @@ def test_materialize_skips_deactivated_child_mid_walk(tmp_path) -> None:
 
 def test_materialize_uses_single_presence_snapshot_mid_walk(tmp_path) -> None:
     async def _body(database):
-        from custom_components.nestquest.dao_presence import (
+        from custom_components.nestquest.core.dao_presence import (
             PresenceOverridesDao,
         )
 
@@ -628,7 +628,7 @@ def test_materialize_does_not_overwrite_regenerated_due_time(tmp_path) -> None:
 
 def test_materialize_honours_overrides(tmp_path) -> None:
     async def _body(database):
-        from custom_components.nestquest.dao_presence import (
+        from custom_components.nestquest.core.dao_presence import (
             PresenceOverridesDao,
         )
 
@@ -758,7 +758,7 @@ def test_materialize_clamps_past_start_to_today(tmp_path) -> None:
 
 def test_materialize_skips_inactive_definitions(tmp_path) -> None:
     async def _body(database):
-        from custom_components.nestquest.quest_definitions import (
+        from custom_components.nestquest.core.quest_definitions import (
             set_quest_definition_active,
         )
 
@@ -906,7 +906,7 @@ def test_regenerate_for_child_rebuilds_horizon_preserves_history(
     tmp_path,
 ) -> None:
     async def _body(database):
-        from custom_components.nestquest.dao_presence import (
+        from custom_components.nestquest.core.dao_presence import (
             PresenceOverridesDao,
         )
 
@@ -1091,7 +1091,7 @@ def test_regenerate_for_child_uses_single_anchor_across_midnight(
 def test_regenerate_for_child_is_child_scoped(tmp_path) -> None:
     """Regenerating one child must never touch another child's rows."""
     async def _body(database):
-        from custom_components.nestquest.dao_presence import (
+        from custom_components.nestquest.core.dao_presence import (
             PresenceOverridesDao,
         )
 
@@ -1493,10 +1493,10 @@ def test_materialize_end_to_end_six_rule_types(tmp_path, monkeypatch) -> None:
     monkeypatch.setattr(materialize_module, "_now_stamp", _distinct_stamp)
 
     async def _body(database):
-        from custom_components.nestquest.dao_presence import (
+        from custom_components.nestquest.core.dao_presence import (
             PresenceOverridesDao,
         )
-        from custom_components.nestquest.presence import PresenceSchedule
+        from custom_components.nestquest.core.presence import PresenceSchedule
 
         children = ChildrenDao(database)
         schedules = PresenceSchedulesDao(database)