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>

alembic/versions/0124_skill_names_follow_the_plugin.py

@@ -0,0 +1,45 @@
+"""skill names follow the plugin's name
+
+Revision ID: 0124
+Revises: 0123
+Create Date: 2026-10-22
+
+The plugin is named `grimoire`, so its skills reach a session as
+`grimoire:<skill>` and stored processes as `grimoire-proc-<slug>`. A rule
+mounted on one of those skills, a judgment about that mount, and an install's
+own action mapping all store the skill's name, and a stored name the harness no
+longer sends never matches again. This rewrites the plugin's earlier prefixes,
+`scribe:` and `scribe-proc-`, to the current ones.
+
+Cost: three small tables, each one row per mount, judgment or mapping.
+"""
+from alembic import op
+
+revision = "0124"
+down_revision = "0123"
+branch_labels = None
+depends_on = None
+
+_MOMENT_TABLES = ("rule_moments", "rule_moment_judgments", "moment_mappings")
+
+
+def _rename(old: str, new: str) -> None:
+    for table in _MOMENT_TABLES:
+        op.execute(
+            f"UPDATE {table} SET moment = regexp_replace(moment, "
+            f"'^skill\\.{old}(:|-proc-)', 'skill.{new}\\1') "
+            f"WHERE moment ~ '^skill\\.{old}(:|-proc-)'"
+        )
+    op.execute(
+        f'UPDATE moment_mappings SET "match" = regexp_replace("match", '
+        f"'skill={old}(:|-proc-)', 'skill={new}\\1', 'g') "
+        f"WHERE \"match\" ~ 'skill={old}(:|-proc-)'"
+    )
+
+
+def upgrade() -> None:
+    _rename("scribe", "grimoire")
+
+
+def downgrade() -> None:
+    _rename("grimoire", "scribe")