feat(theme-studio): widen the face model with the additive attributes

This is Phase 2 of the face-attribute expansion. The model now carries distant-fg, family, overline, inverse, and extend in final shape across all three tiers, and inherit and height are no longer package-only (a ui or syntax face can set them too).

I kept bold/italic/underline/strike as the legacy booleans for now. The cutover to weight/slant and the underline/strike object forms lands in the next phase with the editor widgets that force it, so the representation and the controls that drive it move together.

face_specs.py holds the canonical defaults. In app-core.js, normalizePkgFace and packagesForExport carry and emit the new attrs: distant-fg resolves through the palette like fg/bg, and each attr exports only when set, so existing presets re-export unchanged. app.js syntaxBlank, uiFaceBlank, and seedFace match the shape.

Nothing changed shape, so dupre, distinguished, sterling, now, theme, and WIP all emit byte-identical themes. make check green: Python 58, Node 193, ERT 40.

1 files changed, 19 insertions, 1 deletions

diff --git a/scripts/theme-studio/test_generate.py b/scripts/theme-studio/test_generate.py
index a0ca91e06..91f8b4bd0 100644
--- a/scripts/theme-studio/test_generate.py
+++ b/scripts/theme-studio/test_generate.py
@@ -195,24 +195,42 @@ class FaceSpecDefaults(unittest.TestCase):
         self.assertEqual(ui_face_spec({"bg": "#ffffff", "bold": True}), {
             "fg": None,
             "bg": "#ffffff",
+            "distant-fg": None,
+            "family": None,
             "bold": True,
             "italic": False,
             "underline": False,
             "strike": False,
+            "overline": None,
             "box": None,
+            "inverse": False,
+            "extend": False,
+            "inherit": None,
+            "height": None,
         })
 
+    def test_ui_face_spec_carries_inherit_and_height(self):
+        # inherit/height are no longer package-only; a ui face can set them.
+        spec = ui_face_spec({"inherit": "shadow", "height": 1.3})
+        self.assertEqual(spec["inherit"], "shadow")
+        self.assertEqual(spec["height"], 1.3)
+
     def test_package_face_spec_fills_structure_fields(self):
         self.assertEqual(package_face_spec({"inherit": "base", "height": 1.2}), {
             "fg": None,
             "bg": None,
+            "distant-fg": None,
+            "family": None,
             "bold": False,
             "italic": False,
             "underline": False,
             "strike": False,
+            "overline": None,
+            "box": None,
+            "inverse": False,
+            "extend": False,
             "inherit": "base",
             "height": 1.2,
-            "box": None,
         })
 
     def test_generated_color_names_are_base_columns_when_legacy(self):