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_task_claims.py

@@ -125,12 +125,12 @@ def test_a_dead_claim_restarts_rather_than_resumes():
 def test_the_binder_hook_watches_the_two_writes_that_stamp_a_claim():
     hooks = json.loads((ROOT / "plugin/hooks/hooks.json").read_text())["hooks"]
     blocks = [b for b in hooks["PostToolUse"]
-              if any("scribe_claim_session.sh" in h["command"] for h in b["hooks"])]
+              if any("grimoire_claim_session.sh" in h["command"] for h in b["hooks"])]
     assert len(blocks) == 1
     matcher = re.compile(blocks[0]["matcher"])
-    assert matcher.fullmatch("mcp__plugin_scribe_scribe__update_task")
-    assert matcher.fullmatch("mcp__scribe__add_task_log")
-    assert not matcher.fullmatch("mcp__scribe__get_task")
+    assert matcher.fullmatch("mcp__plugin_grimoire_grimoire__update_task")
+    assert matcher.fullmatch("mcp__grimoire__add_task_log")
+    assert not matcher.fullmatch("mcp__grimoire__get_task")
 
 
 # --- 5. binding a session (integration) --------------------------------------
@@ -236,7 +236,7 @@ def test_a_dead_claim_on_finished_work_is_not_news():
 def test_the_session_start_hook_sends_the_source_and_the_session():
     """The reader branches on what the hook sends; a hook that stopped sending
     either would leave every session on the no-claims path, silently."""
-    text = (ROOT / "plugin/hooks/scribe_session_context.sh").read_text()
+    text = (ROOT / "plugin/hooks/grimoire_session_context.sh").read_text()
     assert re.search(r'q="source=\$\(printf', text)
     assert "session_id=$(printf" in text
 
@@ -265,8 +265,8 @@ def test_session_end_releases_claims_but_not_on_clear():
     SessionStart(source=clear) pushes the claimed work straight back."""
     hooks = json.loads((ROOT / "plugin/hooks/hooks.json").read_text())["hooks"]
     commands = [h["command"] for b in hooks.get("SessionEnd", []) for h in b["hooks"]]
-    assert any("scribe_session_end.sh" in c for c in commands)
-    text = (ROOT / "plugin/hooks/scribe_session_end.sh").read_text()
+    assert any("grimoire_session_end.sh" in c for c in commands)
+    text = (ROOT / "plugin/hooks/grimoire_session_end.sh").read_text()
     assert '[ "$reason" = "clear" ] && exit 0' in text
     assert "/api/plugin/release-session" in text