News: Cache-Buster für Bild-URLs, HEAD, Limiter-Feinschliff

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/newsPosts.test.js

@@ -91,7 +91,8 @@ test('oeffentlich_nur_haengende_ohne_interna', async () => {
   assert.equal(p1.posts.length, 6)
   assert.equal(p1.hasMore, true)
   assert.equal(p1.posts[0].title, 'Mit Foto')
-  assert.deepEqual(p1.posts[0].image, { w: 40, h: 30 })
+  assert.deepEqual({ ...p1.posts[0].image, v: undefined }, { w: 40, h: 30, v: undefined })
+  assert.ok(Number.isFinite(p1.posts[0].image.v), 'v = Cache-Buster fuer die Route')
   assert.equal(p1.posts[0].date, '2026-10-01')
   assert.equal(p1.posts[1].image, null)
   for (const p of p1.posts) {