rename(547): the server is grimoire — package, image, DB defaults, backups

Step 2 of the Scribe -> Grimoire rename.

- src/scribe -> src/grimoire, and every import, patch target, module path,
  hypercorn entry point and `python -m grimoire.restore` with it; pyproject,
  uv.lock and the frontend package are named grimoire.
- Image git.fabledsword.com/bvandeusen/fabledgrimoire; CI's Postgres service
  runs as grimoire / grimoire_test.
- Compose files default the DB user, database and (prod) volume to grimoire,
  each overridable from .env, so an install created as Scribe keeps its data
  by setting POSTGRES_USER, POSTGRES_DB and PGDATA_VOLUME.
- Backups are written as grimoire-<ts>.tar with format grimoire-backup-tar.
  Archives named scribe-* with the scribe-backup-tar manifest still restore
  and are still counted at the destination (folder and S3), with tests.
- Exports, the MCP auth realm, the ASGI scope key and the persistent logger
  carry the new name.

Kept on purpose: the secret-sealing key label stays "scribe.secrets.v1",
because every stored secret was derived under it.

Plugin identity (plugin name, hooks, env vars, .scribe marker, skills) is
step 3.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_services_rule_usage.py

@@ -6,10 +6,10 @@ where a mistake is silent rather than loud.
 """
 import pytest
 
-from scribe.models.rule_usage import (
+from grimoire.models.rule_usage import (
     APPLIED, DEPARTED, PULLED, SURFACED, RuleUsageEvent,
 )
-from scribe.services import rule_usage
+from grimoire.services import rule_usage
 
 
 @pytest.fixture
@@ -154,8 +154,8 @@ def test_the_model_serialises_the_fields_the_ratio_needs():
 async def test_usage_for_rules_aggregates_per_rule(_dispose_engine):
     from sqlalchemy import delete
 
-    from scribe.models import async_session
-    from scribe.models.rule_usage import RuleUsageEvent
+    from grimoire.models import async_session
+    from grimoire.models.rule_usage import RuleUsageEvent
 
     async with async_session() as s:
         s.add_all([
@@ -222,8 +222,8 @@ async def test_a_preloaded_rule_does_not_read_as_a_ranked_surfacing(_dispose_eng
     """
     from sqlalchemy import delete
 
-    from scribe.models import async_session
-    from scribe.models.rule_usage import RuleUsageEvent
+    from grimoire.models import async_session
+    from grimoire.models.rule_usage import RuleUsageEvent
 
     async with async_session() as s:
         s.add_all([