refactor(theme-studio): derive the Python face model from one spec list

STYLE_DEFAULTS, default_faces.seed, and capture-default-faces' ATTRS each hand-listed the face attributes, so adding one meant editing three places in step. face_specs.FACE_ATTRS is now one row per attribute carrying the model key, default, capture keyword, snapshot field, and seed transform kind. STYLE_DEFAULTS derives from it (same keys, order, and values), seed iterates it applying the per-kind extraction, and the capture probe map derives its emacs-attr to snapshot-field pairs from it. The snapshot-to-model translation stays genuinely per-attribute (colors prefer the Hex variant, flags become objects, weight/slant are value-narrowed), but the attribute list itself is now single-sourced. Verified byte-identical: STYLE_DEFAULTS and ATTRS match the old literals, the generated page is unchanged, and the suite is green. app-core.js mirrors this list by hand since the page is a separate runtime.

1 files changed, 7 insertions, 15 deletions

diff --git a/scripts/theme-studio/capture-default-faces.py b/scripts/theme-studio/capture-default-faces.py
index 3de09941b..8c8fd6679 100644
--- a/scripts/theme-studio/capture-default-faces.py
+++ b/scripts/theme-studio/capture-default-faces.py
@@ -17,6 +17,8 @@ import re
 import subprocess
 import tempfile
 
+from face_specs import FACE_ATTRS
+
 HERE = pathlib.Path(__file__).resolve().parent
 ROOT = HERE.parents[1]
 OUT = HERE / "emacs-default-faces.json"
@@ -85,21 +87,11 @@ BUILTIN_FEATURES = [
     "shr",
 ]
 
-ATTRS = {
-    ":foreground": "foreground",
-    ":background": "background",
-    ":weight": "weight",
-    ":slant": "slant",
-    ":underline": "underline",
-    ":strike-through": "strike",
-    ":overline": "overline",
-    ":box": "box",
-    ":height": "height",
-    ":inherit": "inherit",
-    ":inverse-video": "inverseVideo",
-    ":extend": "extend",
-    ":distant-foreground": "distantForeground",
-}
+# Emacs face :attribute keyword -> snapshot field name, derived from the shared
+# face-attribute spec so the capture, the seed extraction, and STYLE_DEFAULTS all
+# stay in step. Attributes the snapshot doesn't carry (e.g. family) have no
+# capture keyword and are skipped.
+ATTRS = {a["capture"]: a["snapshot"] for a in FACE_ATTRS if a["capture"]}
 
 
 def x11_colors() -> dict[str, str]: