Merge branch 'worktree-cssx-components' into macros

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

shared/sx/parser.py

@@ -382,11 +382,6 @@ def serialize(expr: Any, indent: int = 0, pretty: bool = False) -> str:
             items.append(serialize(v, indent, pretty))
         return "{" + " ".join(items) + "}"
 
-    # StyleValue — serialize as class name string
-    from .types import StyleValue
-    if isinstance(expr, StyleValue):
-        return f'"{expr.class_name}"'
-
     # _RawHTML — pre-rendered HTML; wrap as (raw! "...") for SX wire format
     from .html import _RawHTML
     if isinstance(expr, _RawHTML):