chore(theme-studio): remove dead code and clear a type warning

- ramp (app-core.js) and its test-ramp.mjs: superseded by regenColumn, no production caller.
- optList (app-core.js) and its tests: superseded by paletteOptionList.
- ITALIC in generate.py: computed, never read (ITALIC_MAP is the live one).
- a stray empty string in MU4E_FACES that .split() silently dropped.
- the dead #familytest alias in the columntest gate, which HASHES never listed.
- widen face_rows to Sequence[str], clearing the list-invariance warnings on the APPS calls.

1 files changed, 2 insertions, 1 deletions

diff --git a/scripts/theme-studio/app_inventory.py b/scripts/theme-studio/app_inventory.py
index 28b641a94..26044d359 100644
--- a/scripts/theme-studio/app_inventory.py
+++ b/scripts/theme-studio/app_inventory.py
@@ -4,6 +4,7 @@ from __future__ import annotations
 
 import json
 import os
+from collections.abc import Sequence
 from typing import Any
 
 
@@ -38,7 +39,7 @@ def face_label(face: str, prefix: str) -> str:
     return label.replace("-face", "").replace("-", " ")
 
 
-def face_rows(names: list[str], prefix: str, seed: dict[str, dict[str, Any]]) -> list[list[Any]]:
+def face_rows(names: Sequence[str], prefix: str, seed: dict[str, dict[str, Any]]) -> list[list[Any]]:
     return [[face, face_label(face, prefix), seed.get(face, {})] for face in names]