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_record_kind_surface.py

@@ -21,19 +21,19 @@ import importlib
 
 import pytest
 
-from scribe.mcp.server import (
+from grimoire.mcp.server import (
     _DELIBERATELY_WRITE_SCOPED,
     _READ_ONLY_TOOLS,
     _WRITE_TOOLS,
 )
-from scribe.services.dedup import _REPORT_KINDS
+from grimoire.services.dedup import _REPORT_KINDS
 
 # singular -> the tools module, which is also the plural used by the listing.
 KINDS = {"snippet": "snippets", "process": "processes", "lesson": "lessons"}
 
 
 def _module(plural: str):
-    return importlib.import_module(f"scribe.mcp.tools.{plural}")
+    return importlib.import_module(f"grimoire.mcp.tools.{plural}")
 
 
 def _expected_tools(singular: str, plural: str) -> list[str]: