rename(547): what people read says Grimoire

Step 1 of the Scribe -> Grimoire rename: every capitalised "Scribe" in prose
becomes "Grimoire" ("Fabled Scribe" -> "Fabled Grimoire") across the UI,
the PWA manifest and page title, the MCP instructions and tool docstrings,
hook and skill text, docs and README, with the tests that assert on that
prose moving with it. Old migrations keep their wording.

Identifiers are untouched here: the package, plugin name, MCP server key,
hook file names, env vars, the .scribe marker and FabledScribe repo/image
names move in steps 2 and 3, along with prose that quotes them.

The sweep matched "Scribe" only as a whole word, so describe/subscribe and
friends are untouched. The longer name took the MCP instructions one
character over their 1,600 budget; two phrases are shortened to fit.

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

tests/test_moment_delivery.py

@@ -8,7 +8,7 @@ tests/test_integration_rule_moments.py. These pin what is decided above it:
   fresh ones are recorded, each with its moment;
 - every door fails open;
 - the plugin is told which tools can reach anything, and nothing more;
-- every Scribe tool the shipped mappings name carries the attach, and the
+- every Grimoire tool the shipped mappings name carries the attach, and the
   hook and the route agree on every name between them.
 """
 from __future__ import annotations
@@ -352,7 +352,7 @@ def test_an_install_with_nothing_mounted_sends_one_request_per_window(tmp_path):
     assert len(seen) == 1
 
 
-# ── the MCP door: every shipped Scribe action carries the attach ────────
+# ── the MCP door: every shipped Grimoire action carries the attach ────────
 
 
 def _attached_names(path: Path) -> dict[str, set[str]]: