rename(547): three hook-shell tests call the renamed functions

The step-3 sweep matched `scribe` only after a non-letter, and in these
three tests the shell call sits right after a `\n` escape in a Python
string, so the character before it was the letter n. They still called
scribe_recent_context, scribe_skip_prompt and scribe_checkpoint_allowed;
they now call the grimoire_ names. No other escape-adjacent occurrence
remains in the tree.

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

tests/test_autoinject_context.py

@@ -70,7 +70,7 @@ def recent(tmp_path: Path, lines: list[str]) -> str:
     t = tmp_path / "t.jsonl"
     t.write_text("\n".join(lines) + "\n")
     r = subprocess.run(
-        ["bash", "-c", f'set -uo pipefail\n. "{DEFS}"\nscribe_recent_context "{t}"'],
+        ["bash", "-c", f'set -uo pipefail\n. "{DEFS}"\ngrimoire_recent_context "{t}"'],
         capture_output=True,
     )
     assert r.returncode == 0, r.stderr.decode()