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_contract_around_the_change.py

@@ -38,8 +38,8 @@ import pytest
 
 from tests.helpers import need_tools
 
-DEFS = Path(__file__).resolve().parents[1] / "plugin" / "hooks" / "scribe_defs.sh"
-HOOK = Path(__file__).resolve().parents[1] / "plugin" / "hooks" / "scribe_prior_art.sh"
+DEFS = Path(__file__).resolve().parents[1] / "plugin" / "hooks" / "grimoire_defs.sh"
+HOOK = Path(__file__).resolve().parents[1] / "plugin" / "hooks" / "grimoire_prior_art.sh"
 
 
 def run(script: str) -> str:
@@ -95,15 +95,15 @@ def q(text: str) -> str:
 
 def block(repo, subject, old, new, ledger="") -> str:
     return run(
-        f'scribe_contract_block "{repo}" "lib.py" "{subject}" '
+        f'grimoire_contract_block "{repo}" "lib.py" "{subject}" '
         f'{q(old)} {q(new)} "{ledger}"'
     )
 
 
-# ── scribe_exposed: the three kinds ───────────────────────────────────────
+# ── grimoire_exposed: the three kinds ───────────────────────────────────────
 
 def exposed(text: str) -> set[str]:
-    out = run(f'printf %s {q(text)} | scribe_exposed')
+    out = run(f'printf %s {q(text)} | grimoire_exposed')
     return {ln for ln in out.split("\n") if ln.strip()}
 
 
@@ -225,7 +225,7 @@ def test_the_write_hook_still_cannot_stop_a_write():
     code = [ln for ln in HOOK.read_text().splitlines()
             if not ln.lstrip().startswith("#")]
     assert not any("permissionDecision" in ln for ln in code)
-    assert not any("scribe_json_deny" in ln for ln in code)
+    assert not any("grimoire_json_deny" in ln for ln in code)
 
 
 def test_the_hook_asks_the_contract_question_first():