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_guidance_ownership.py

@@ -64,7 +64,7 @@ def _live_session_context_source() -> str:
     Read as text rather than called: the function needs a database, and what
     this module checks is what the product SAYS, which is the literal strings.
     """
-    src = (ROOT / "src/scribe/services/plugin_context.py").read_text()
+    src = (ROOT / "src/grimoire/services/plugin_context.py").read_text()
     start = src.index("async def build_session_context")
     nxt = re.search(r"\n(?:async def|def) ", src[start + 1:])
     return src[start:start + 1 + nxt.start()] if nxt else src[start:]
@@ -73,7 +73,7 @@ def _live_session_context_source() -> str:
 def _delivered_shapes() -> str:
     """Every reply shape as a session receives it in full. Rendered rather than
     read as source: the header a shape arrives under is guidance too."""
-    from scribe.services import reply_shapes
+    from grimoire.services import reply_shapes
 
     return "\n\n".join(reply_shapes.render(s, full=True) for s in reply_shapes.SHAPES.values())
 
@@ -91,12 +91,12 @@ def delivered_surfaces() -> dict[str, str]:
       - `shapes`       — the reply shapes the server delivers at their moments,
                          in the full form a session first sees
     """
-    server = (ROOT / "src/scribe/mcp/server.py").read_text()
+    server = (ROOT / "src/grimoire/mcp/server.py").read_text()
     match = re.search(r'_INSTRUCTIONS = """(.*?)"""', server, re.S)
     assert match, "server.py no longer defines _INSTRUCTIONS as a triple-quoted literal"
     surfaces = {
         "instructions": match.group(1),
-        "docstrings": "".join(p.read_text() for p in sorted((ROOT / "src/scribe/mcp/tools").glob("*.py"))),
+        "docstrings": "".join(p.read_text() for p in sorted((ROOT / "src/grimoire/mcp/tools").glob("*.py"))),
         "static": (ROOT / "plugin/hooks/scribe_static_context.md").read_text(),
         "commands": "".join(p.read_text() for p in sorted((ROOT / "plugin/commands").glob("*.md"))),
         "live": _live_session_context_source(),