Convert editor panel <script> block to sexp wrapper

Separate JS content from HTML tag — pass JS body into
(script (raw! js)) so zero raw HTML tags remain.

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

blog/sexp/sexp_components.py

@@ -1663,10 +1663,8 @@ def render_editor_panel(save_error: str | None = None, is_page: bool = False) ->
         ecss=editor_css,
     ))
 
-    # Editor JS + init script — kept as raw HTML due to complex JS with quotes
-    parts.append(sexp('(script :src ejs)', ejs=editor_js))
-    parts.append(
-        "<script>\n"
+    # Editor JS + init script
+    init_js = (
         "(function() {\n"
         "  function applyEditorFontSize() {\n"
         "    document.documentElement.style.fontSize = '62.5%';\n"
@@ -1796,8 +1794,11 @@ def render_editor_panel(save_error: str | None = None, is_page: bool = False) ->
         "    }, 50);\n"
         "  }\n"
         "})();\n"
-        "</script>"
     )
+    parts.append(sexp(
+        '(<> (script :src ejs) (script (raw! js)))',
+        ejs=editor_js, js=init_js,
+    ))
 
     return "".join(parts)