Test generator: inner text content, assert= arg order fix

- Capture leaf element text content (e.g., <div>3</div> sets innerHTML "3")
- Fix assert= argument order: (actual expected) matches SX harness convention
- put: 17→19, empty: 6→4 (inner text reveals empty command not implemented)

402 → 403/831 (+1)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/playwright/generate-sx-tests.py

@@ -58,7 +58,9 @@ def parse_html(html):
                 stack.pop()
 
         def handle_data(self, data):
-            pass
+            # Only capture text for top-level elements with no children
+            if stack and stack[-1]['depth'] == 0 and len(stack) == 1:
+                stack[-1]['inner'] += data.strip()
 
     Parser().feed(html)
     return elements
@@ -525,6 +527,9 @@ def emit_element_setup(lines, elements, var_names):
                 continue
             aval_escaped = aval.replace('"', '\\"')
             lines.append(f'      (dom-set-attr {var} "{aname}" "{aval_escaped}")')
+        if el['inner']:
+            inner_escaped = el['inner'].replace('\\', '\\\\').replace('"', '\\"')
+            lines.append(f'      (dom-set-inner-html {var} "{inner_escaped}")')
         lines.append(f'      (dom-append (dom-body) {var})')
         if el['hs']:
             lines.append(f'      (hs-activate! {var})')