fix(forms): preserve regex quantifiers and use inline constraint errors

packages/compiler/test/pattern-quantifiers.test.ts

@@ -0,0 +1,22 @@
+import { test, expect } from "bun:test";
+import { parse, generate } from "../src/index.ts";
+
+test("HTML and component pattern attributes preserve regex quantifiers", () => {
+  for (const tag of ["input", "Input"]) {
+    for (const pattern of ["[0-9]{6}", "[a-z]{2,8}", "[A-Z]{1,}"]) {
+      const code = generate(parse(`page Example { view { <${tag} pattern="${pattern}" /> } }`));
+      expect(code).toContain(pattern);
+      expect(code).not.toContain("__wrnAttr(6)");
+      expect(code).not.toContain("__wrnAttr(2,8)");
+    }
+  }
+});
+
+test("dynamic pattern props still compile as expressions", () => {
+  const code = generate(
+    parse(
+      'component Example { props { pattern: string = "" } view { <input pattern="{pattern}" /> } }',
+    ),
+  );
+  expect(code).toContain("__wrnAttr(pattern)");
+});