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_services_backup_s3.py

@@ -6,7 +6,7 @@ from datetime import datetime, timezone
 import httpx
 import pytest
 
-from scribe.services import backup_s3 as s3
+from grimoire.services import backup_s3 as s3
 
 # AWS's example credentials and moment ("Signature Calculations for the
 # Authorization Header", Amazon S3 API reference).
@@ -41,12 +41,12 @@ def test_a_changed_secret_changes_the_signature():
     assert _signature(a) != _signature(b)
 
 
-TARGET = s3.S3Target("http://archives:8081/s3", "scribe", KEY_ID, SECRET)
+TARGET = s3.S3Target("http://archives:8081/s3", "grimoire", KEY_ID, SECRET)
 
 
 def test_paths_are_path_style():
-    assert TARGET.url("scribe-20261012T000000Z.tar") == "http://archives:8081/s3/scribe/scribe-20261012T000000Z.tar"
-    assert TARGET.url() == "http://archives:8081/s3/scribe/"
+    assert TARGET.url("grimoire-20261012T000000Z.tar") == "http://archives:8081/s3/grimoire/grimoire-20261012T000000Z.tar"
+    assert TARGET.url() == "http://archives:8081/s3/grimoire/"
 
 
 def test_put_sends_the_file_signed(tmp_path):
@@ -63,7 +63,7 @@ def test_put_sends_the_file_signed(tmp_path):
 
     asyncio.run(s3.put_file(TARGET, "b.tar", f, transport=httpx.MockTransport(handler)))
     assert seen["method"] == "PUT"
-    assert seen["url"] == "http://archives:8081/s3/scribe/b.tar"
+    assert seen["url"] == "http://archives:8081/s3/grimoire/b.tar"
     assert seen["body"] == b"x" * 5000
     assert seen["sha"] == s3.file_sha256(f)
     assert seen["auth"].startswith("AWS4-HMAC-SHA256 Credential=AKIAIOSFODNN7EXAMPLE/")
@@ -92,10 +92,10 @@ def test_unreachable_says_so(tmp_path):
 def test_list_reads_contents():
     xml = b"""<?xml version="1.0" encoding="UTF-8"?>
 <ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
-  <Name>scribe</Name><KeyCount>2</KeyCount>
-  <Contents><Key>scribe-20261011T000000Z.tar</Key><Size>1200</Size>
+  <Name>grimoire</Name><KeyCount>2</KeyCount>
+  <Contents><Key>grimoire-20261011T000000Z.tar</Key><Size>1200</Size>
     <LastModified>2026-10-11T00:00:01.000Z</LastModified></Contents>
-  <Contents><Key>scribe-20261012T000000Z.tar</Key><Size>1300</Size>
+  <Contents><Key>grimoire-20261012T000000Z.tar</Key><Size>1300</Size>
     <LastModified>2026-10-12T00:00:01.000Z</LastModified></Contents>
 </ListBucketResult>"""
     seen = {}
@@ -104,9 +104,9 @@ def test_list_reads_contents():
         seen["params"] = dict(request.url.params)
         return httpx.Response(200, content=xml)
 
-    got = asyncio.run(s3.list_objects(TARGET, "scribe-", transport=httpx.MockTransport(handler)))
-    assert seen["params"] == {"list-type": "2", "max-keys": "1000", "prefix": "scribe-"}
+    got = asyncio.run(s3.list_objects(TARGET, "grimoire-", transport=httpx.MockTransport(handler)))
+    assert seen["params"] == {"list-type": "2", "max-keys": "1000", "prefix": "grimoire-"}
     assert got == [
-        s3.StoredObject("scribe-20261011T000000Z.tar", 1200, "2026-10-11T00:00:01.000Z"),
-        s3.StoredObject("scribe-20261012T000000Z.tar", 1300, "2026-10-12T00:00:01.000Z"),
+        s3.StoredObject("grimoire-20261011T000000Z.tar", 1200, "2026-10-11T00:00:01.000Z"),
+        s3.StoredObject("grimoire-20261012T000000Z.tar", 1300, "2026-10-12T00:00:01.000Z"),
     ]