rename(547): the plugin is grimoire — manifest, MCP key, hooks, env, skills

Step 3 of the Scribe -> Grimoire rename.

- Plugin `grimoire` in marketplace `grimoire-plugin`, MCP server key
  `grimoire`, so tools reach a session as mcp__plugin_grimoire_grimoire__*.
- hooks/scribe_* -> hooks/grimoire_*, their shell functions and the TMPDIR
  ledgers with them; SCRIBE_URL / SCRIBE_TOKEN / SCRIBE_HOOK_DIR /
  SCRIBE_LEDGER_DIRS -> GRIMOIRE_*; the project marker is `.grimoire`.
- skills/using-scribe -> using-grimoire, /grimoire:sync, stored processes
  arrive as grimoire-proc-<slug>; moment_actions names them the same way.
- Migration 0124 rewrites stored skill names (rule_moments,
  rule_moment_judgments, moment_mappings) from scribe:/scribe-proc- to
  grimoire:/grimoire-proc-, so a rule mounted on a skill keeps firing.
- Settings' install commands and MCP-only defaults, the docs and the
  tests follow.
- scripts/check_plugin.py drops the smoke event for a report-check hook
  that has no file in plugin/hooks.

Kept on purpose: the secret-sealing label, and the names that let backups
written as Scribe restore and be counted.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_plugin_version_mint.py

@@ -47,7 +47,7 @@ def _reset_failures():
 
 def fake_manifest(version: str = "2026.09.01.2252") -> str:
     return json.dumps(
-        {"name": "scribe", "description": "d", "version": version,
+        {"name": "grimoire", "description": "d", "version": version,
          "userConfig": {"api_endpoint": {"type": "string"}}},
         indent=2,
     )
@@ -125,9 +125,9 @@ def test_the_rewrite_touches_exactly_one_line():
 
 
 def test_the_rewrite_preserves_indentation_and_key_order():
-    weird = '{\n\t"name": "scribe",\n\t"version": "0.1.48",\n\t"z": 1\n}\n'
+    weird = '{\n\t"name": "grimoire",\n\t"version": "0.1.48",\n\t"z": 1\n}\n'
     out = rewrite(weird, "2026.09.01.2252")
-    assert out == '{\n\t"name": "scribe",\n\t"version": "2026.09.01.2252",\n\t"z": 1\n}\n'
+    assert out == '{\n\t"name": "grimoire",\n\t"version": "2026.09.01.2252",\n\t"z": 1\n}\n'
 
 
 def test_the_rewrite_refuses_a_manifest_it_cannot_match():
@@ -135,7 +135,7 @@ def test_the_rewrite_refuses_a_manifest_it_cannot_match():
     cannot match is one whose shape changed, and quietly reformatting the file
     to cope would be a far larger edit than the caller asked for."""
     with pytest.raises(ValueError):
-        rewrite('{"name": "scribe"}', "2026.09.01.2252")
+        rewrite('{"name": "grimoire"}', "2026.09.01.2252")
 
 
 def test_the_rewrite_refuses_TWO_version_lines():
@@ -192,17 +192,17 @@ def test_content_changed_and_the_version_did_not_FAILS(monkeypatch):
     """The headline, and the only reason the check exists."""
     failures = run_check(
         "2026.09.01.2252", "2026.09.01.2252",
-        ["plugin/hooks/scribe_session_context.sh"], monkeypatch,
+        ["plugin/hooks/grimoire_session_context.sh"], monkeypatch,
     )
     assert len(failures) == 1
     assert "still 2026.09.01.2252" in failures[0]
-    assert "scribe_session_context.sh" in failures[0]
+    assert "grimoire_session_context.sh" in failures[0]
 
 
 def test_content_changed_and_the_version_moved_PASSES(monkeypatch):
     assert run_check(
         "2026.09.01.2252", "2026.08.30.1200",
-        ["plugin/hooks/scribe_session_context.sh"], monkeypatch,
+        ["plugin/hooks/grimoire_session_context.sh"], monkeypatch,
     ) == []
 
 
@@ -283,5 +283,5 @@ def test_the_session_context_hook_still_reads_the_version_field():
     """The hook reads `.version` out of the manifest rather than deriving the
     string some other way — if this has to move, the derivation went
     somewhere it should not have."""
-    hook = (check_plugin.HOOKS_DIR / "scribe_session_context.sh").read_text()
-    assert re.search(r"scribe_json_pick[^\n]*'\.version'", hook)
+    hook = (check_plugin.HOOKS_DIR / "grimoire_session_context.sh").read_text()
+    assert re.search(r"grimoire_json_pick[^\n]*'\.version'", hook)