refactor: adopt shared page and workspace layouts

webui/tests/accessibility-contract.test.mjs

@@ -17,6 +17,26 @@ const sources = sourceFiles(sourceRoot).map((file) => ({
   value: fs.readFileSync(file, "utf8"),
 }));
 
+for (const { file, value } of sources) {
+  assert.ok(
+    !value.includes('className="content-pad workspace-data-page'),
+    `${path.relative(sourceRoot, file)} must use Core PageLayout instead of a raw page frame`,
+  );
+  assert.ok(
+    !/<div\s+className="workspace(?:\s|\")/.test(value),
+    `${path.relative(sourceRoot, file)} must use Core WorkspaceLayout instead of a raw workspace`,
+  );
+}
+
+for (const relativePath of [
+  "features/campaigns/CampaignWorkspace.tsx",
+  "features/campaigns/CampaignModulePage.tsx",
+  "features/templates/TemplatesPage.tsx",
+]) {
+  const value = fs.readFileSync(path.join(sourceRoot, relativePath), "utf8");
+  assert.ok(value.includes("<WorkspaceLayout"), `${relativePath} must retain the shared workspace shell`);
+}
+
 const nonSemanticClicks = sources.flatMap(({ file, value }) =>
   [...value.matchAll(/<(div|span|li|tr)\b[^>]*\bonClick\s*=/g)].map(
     (match) => `${path.relative(sourceRoot, file)}:${match.index}`,