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_reporting_back_skill.py

@@ -42,7 +42,7 @@ def test_a_request_for_approval_has_its_own_named_section():
     """A go-ahead request inside a completion list, as "Blocked by the
     permission check", reads as a fault rather than a question waiting on the
     operator. The heading is what they scan for, so it is pinned by name."""
-    from scribe.services import reply_shapes
+    from grimoire.services import reply_shapes
 
     assert "Approval requested" in _text()
     # The kinds live in the delivered shapes: the asks shape
@@ -78,7 +78,7 @@ def test_the_skill_points_at_the_delivered_shapes_instead_of_restating_them():
 def test_the_worked_completion_report_agrees_with_the_delivered_completion_shape():
     """The two copies that could drift: the worked example here, and the
     completion shape the server sends when a task closes. Same sections."""
-    from scribe.services import reply_shapes
+    from grimoire.services import reply_shapes
 
     shape = reply_shapes.SHAPES["completion"].text
     for section in ("Where this sits", "What now works", "How / why", "Needs you", "Next"):
@@ -89,6 +89,6 @@ def test_the_worked_completion_report_agrees_with_the_delivered_completion_shape
 def test_the_core_names_the_header_the_skill_quotes():
     """The skill tells the reader what the delivered core looks like; if the
     header changes, the pointer would describe something that never arrives."""
-    from scribe.services import reply_shapes
+    from grimoire.services import reply_shapes
 
     assert reply_shapes.render(reply_shapes.core(), full=True).startswith("Reply shape · Every reply")