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_task_claims.py

@@ -22,8 +22,8 @@ from pathlib import Path
 import pytest
 import pytest_asyncio
 
-from scribe.services import notes as notes_svc
-from scribe.services import task_claims as tc
+from grimoire.services import notes as notes_svc
+from grimoire.services import task_claims as tc
 from tests.helpers import ensure_user
 
 ROOT = Path(__file__).resolve().parents[1]
@@ -137,7 +137,7 @@ def test_the_binder_hook_watches_the_two_writes_that_stamp_a_claim():
 
 @pytest_asyncio.fixture
 async def users(_dispose_engine):
-    from scribe.models import async_session
+    from grimoire.models import async_session
 
     async with async_session() as session:
         a = (await ensure_user(session, "claims_itest_a")).id
@@ -243,8 +243,8 @@ def test_the_session_start_hook_sends_the_source_and_the_session():
 
 @pytest.mark.integration
 async def test_session_start_after_a_compaction_carries_the_claimed_task(users):
-    from scribe.services import task_logs
-    from scribe.services.plugin_context import build_session_context
+    from grimoire.services import task_logs
+    from grimoire.services.plugin_context import build_session_context
 
     owner, _ = users
     task = await notes_svc.create_note(owner, title="claimed then compacted",
@@ -290,7 +290,7 @@ async def test_a_collaborator_with_write_access_can_log_and_so_claims(users):
     """create_log filters on who may write the TASK, not on its owner, so a
     collaborator on a shared task can log on it — nor, since logging
     stamps the claim, ever be seen working it."""
-    from scribe.services import sharing, task_logs
+    from grimoire.services import sharing, task_logs
 
     owner, collaborator = users
     task = await notes_svc.create_note(owner, title="shared work", status="todo")