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_reply_shape_turn.py

@@ -19,7 +19,7 @@ from unittest.mock import AsyncMock, patch
 
 from quart import Quart, g
 
-from scribe.services import reply_shapes
+from grimoire.services import reply_shapes
 from tests.helpers import http_sink, need_tools
 
 ROOT = Path(__file__).resolve().parents[1]
@@ -31,7 +31,7 @@ SESSION_START = ROOT / "plugin" / "hooks" / "scribe_session_context.sh"
 
 
 async def _retrieve(query_string, turn_context="CORE SHAPE"):
-    from scribe.routes import plugin as routes
+    from grimoire.routes import plugin as routes
 
     turn = AsyncMock(return_value={"context": turn_context, "rule_ids": [173],
                                    "shape_forms": {"core": reply_shapes.FULL}})
@@ -120,7 +120,7 @@ def test_the_core_goes_whole_once_then_as_a_reminder_then_whole_after_a_compacti
 
 def test_the_hook_and_the_route_agree_on_the_ledgers_names():
     """A contract across the seam: a renamed field fails silently."""
-    from scribe.routes import plugin as routes
+    from grimoire.routes import plugin as routes
 
     hook = HOOK.read_text()
     assert "shapes_seen" in hook and "'.shape_keys'" in hook