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_services_plugin_context.py

@@ -126,7 +126,7 @@ async def test_build_session_context_includes_project_when_scoped():
     # No design system on the project -> no design block at all. An install with
     # none is the ordinary case, not a degraded one.
     assert "## Design system" not in out["context"]
-    # Live state only: how to work with Scribe is the
+    # Live state only: how to work with Grimoire is the
     # using-scribe skill's to say. A restated reflex here is a copy that drifts.
     assert 'content_type="rule"' not in out["context"]
     assert "Reflex:" not in out["context"]
@@ -249,7 +249,7 @@ async def test_a_project_id_that_does_not_resolve_is_reported_not_dropped():
     assert "list_projects" in ctx
     # Not mistaken for the repo case, which has a different remedy.
     assert "## Repository not yet bound" not in ctx
-    assert "No Scribe project is bound" not in ctx
+    assert "No Grimoire project is bound" not in ctx
 
 
 @pytest.mark.asyncio
@@ -380,7 +380,7 @@ async def _autoinject(main_hits, reuse_hits, cfg=None, lesson_hits=None):
 @pytest.mark.asyncio
 async def test_a_snippet_takes_the_last_slot_when_none_won_on_score():
     """The measured failure: a prompt asking for a helper returned three project
-    records ABOUT building the retrieval system, and zero snippets. Scribe's own
+    records ABOUT building the retrieval system, and zero snippets. Grimoire's own
     records are about software work, so they share vocabulary with any coding
     prompt while answering none of them."""
     main = [(0.66, fake_note(id=1, title="Step 3: title-first auto-inject", user_id=1)),