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_pull_telemetry.py

@@ -54,7 +54,7 @@ SINGLE_NOTE_LOADERS = (
     "get_snippet",
 )
 
-_SRC = pathlib.Path(__file__).resolve().parents[1] / "src" / "scribe"
+_SRC = pathlib.Path(__file__).resolve().parents[1] / "src" / "grimoire"
 TOOLS_DIR = _SRC / "mcp" / "tools"
 ROUTES_DIR = _SRC / "routes"
 
@@ -179,8 +179,8 @@ def test_every_named_loader_still_exists():
     `assert checked` there catches it too; this says WHICH name moved, which is
     the difference between a five-minute fix and a puzzle.
     """
-    from scribe.services import notes as notes_svc
-    from scribe.services import snippets as snippets_svc
+    from grimoire.services import notes as notes_svc
+    from grimoire.services import snippets as snippets_svc
 
     available = {
         name
@@ -314,7 +314,7 @@ def test_the_reading_project_guards_can_fail():
 def test_zero_and_none_both_mean_no_project_reported():
     """0 is how the MCP tools spell "no project" (int parameter, int default);
     the column is nullable. A row claiming project #0 would be a fiction."""
-    from scribe.services.note_usage import _project_or_none
+    from grimoire.services.note_usage import _project_or_none
 
     assert _project_or_none(0) is None
     assert _project_or_none(None) is None