fix: allow safe fresh-clone DryRun builds

tests/LegacyParityWeb/workspace-navigation.test.cjs

@@ -510,6 +510,15 @@ test("workspace navigation stores only the approved local presentation preferenc
   assert.doesNotMatch(navigation, /postMessage|sessionStorage|send\s*\(/);
 });
 
+test("missing external wordmark uses the source-only text fallback", () => {
+  assert.match(navigation,
+    /brandWordmark\.addEventListener\("error", showBrandWordmarkFallback, \{ once: true \}\)/);
+  assert.match(navigation,
+    /brandWordmark\.complete && brandWordmark\.naturalWidth === 0/);
+  assert.match(navigation,
+    /classList\.add\("wordmark-fallback-active"\)/);
+});
+
 test("splitter clamps pointer and keyboard resizing and Escape restores the gesture", () => {
   for (const declaration of [
     /const scheduleMinimumPercent = 34/,