feat: Werbe-Badge im content blocker (unten rechts) + abschaltbar nur mit unlimited (v1.5.0)

- Kleines Badge "GDPR Content Blocker" unten rechts im platzhalter, verlinkt
  auf die kaufseite (rel=nofollow sponsored). Server- und client-seitig.
- Wird IMMER angezeigt; abschaltbar via checkbox im Darstellung-tab
  ("Werbe-Badge ausblenden") - die checkbox ist aber nur mit aktiver
  Unlimited-lizenz nutzbar (sonst disabled) und greift am render-punkt nur,
  wenn is_unlimited() true ist.
- Dafuer speichert das plugin jetzt max_activations aus der backend-antwort
  (activate/validate/swap) und bietet is_unlimited().

+ i18n DE/EN (134 strings). version 1.5.0.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

gdpr-content-blocker/assets/frontend.css

@@ -20,6 +20,7 @@
 
 /* ── Wrapper / placeholder ── */
 .cb-blocker {
+	position: relative;        /* anchor for the bottom-right badge */
 	display: flex;
 	align-items: flex-start;   /* pin content to the top */
 	justify-content: center;
@@ -27,12 +28,29 @@
 	background-color: var(--cb-bg);
 	color: var(--cb-text);
 	box-sizing: border-box;
-	padding: 24px 8px 20px;    /* min 20px top/bottom, 8px sides */
+	padding: 24px 8px 22px;    /* min 20px top/bottom, 8px sides */
 	font-family: inherit;
 	border-radius: 4px;
 	/* No reserved height: the placeholder is exactly as tall as its content. */
 }
 
+/* ── Promo badge (bottom-right) ── */
+.cb-blocker .cb-blocker__badge {
+	position: absolute;
+	right: 8px;
+	bottom: 5px;
+	font-size: 0.6875rem;
+	line-height: 1;
+	color: var(--cb-text);
+	opacity: 0.55;
+	text-decoration: none;
+	white-space: nowrap;
+}
+.cb-blocker .cb-blocker__badge:hover {
+	opacity: 1;
+	text-decoration: underline;
+}
+
 /* ── Inner content ── */
 .cb-blocker .cb-blocker__inner {
 	width: 100%;

gdpr-content-blocker/assets/frontend.js

@@ -319,6 +319,18 @@
 		inner.appendChild( label );
 
 		wrap.appendChild( inner );
+
+		// Promo badge (bottom-right), mirrors the server-rendered placeholder.
+		if ( CFG.showBadge ) {
+			const badge = document.createElement( 'a' );
+			badge.className = 'cb-blocker__badge';
+			badge.href = 'https://lucas-orth.de/wp-plugins/gdpr-content-blocker/';
+			badge.target = '_blank';
+			badge.rel = 'noopener noreferrer nofollow sponsored';
+			badge.textContent = 'GDPR Content Blocker';
+			wrap.appendChild( badge );
+		}
+
 		return wrap;
 	}