P0-2 + Phase A: drop Adsanity iframes, fix SEO baseline, noindex while staging

P0-2 (Adsanity iframe path removed):
- AdImage.tsx: deleted the iframe branch and the ADSANITY_CAMPAIGN_MAP
  fallback. AdImage now renders local images only; banners without a
  src render nothing.
- ads.ts: removed Ad.adsanity_id from the interface. Pruned AJA, Zixi,
  Lectrosonics, Opengear, Studio Hero, Magewell 300x250 and Blackmagic
  300x600 — they relied on ads.broadcastbeat.com which does not resolve.
  Surviving live banners: LiveU 728x90, LiveU PAYG 300x250, Telycam 300x250.
- SidebarAdStack: key no longer references the removed field.
- No banner_analytics rows reference ads.broadcastbeat.com.

Phase A (SEO baseline):
- robots.ts: fallback base URL now broadcastbeat.com (was rocket staging URL).
- sitemap.ts: fallback base URL now broadcastbeat.com (was bb-staging).
- news/[slug]/page.tsx and articles/[slug]/page.tsx: same fallback fix.
  JSON-LD now uses ISO 8601 for datePublished, absolute image URL via
  SITE_URL prefix, and publisher.logo points at /assets/images/logo.png
  instead of the 404-ing /legacy/site/broadcastbeat-logo.png.
- layout.tsx: removed the /en /es /pt /fr /de /zh /ja /ar /hi hreflang
  alternates - those routes 404 today; Phase D will reinstate. Replaced
  rocket.new Organization schema URL with broadcastbeat.com. Set
  robots index/follow=false until Phase B-D land and Rich Results passes.

Featured-image fallback hardening:
- legacy-source: rowToArticle now treats BB_Gray, no_image and placeholder
  URLs as null and falls back to the new placeholder so dead images do not
  leak through to the page.
- public/assets/images/article-placeholder.svg: new clean dark gradient
  with BroadcastBeat wordmark, NOT no_image.png style.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/ads.ts

@@ -2,20 +2,19 @@
 // render on broadcastbeat.com. Adding a new entry here automatically
 // rotates it into the appropriate zone — no other code changes needed.
 //
-// Each Ad must provide EITHER:
-//   - src + click_url + alt   → local image, click goes to click_url
-//   - adsanity_id              → Adsanity iframe (Adsanity tracks the click)
+// Each Ad must provide a local image (src + click_url + alt). The legacy
+// Adsanity iframe path was removed because ads.broadcastbeat.com no longer
+// resolves; banners awaiting creatives are tracked in PENDING_ads.md.
 
 export interface Ad {
   label: string;
   size: "300x250" | "300x600" | "728x90";
-  src?: string;
-  alt?: string;
+  src: string;
+  alt: string;
   click_url?: string;
-  adsanity_id?: string;
 }
 
-/** 728x90 leaderboard pool — header (top of every page) and footer. */
+/** 728x90 leaderboard pool — header (between nav and ticker) and footer. */
 export const ADS_728X90: Ad[] = [
   {
     label: "LiveU",
@@ -30,18 +29,12 @@ export const ADS_728X90: Ad[] = [
  * 300x250 sidebar pool. ALL entries render on every page — SidebarAdStack
  * stacks them vertically and shuffles the order per page-view so each banner
  * cycles through positions. Add new entries here to grow the stack.
+ *
+ * AJA, Zixi, Lectrosonics, Opengear, Studio Hero, Magewell were removed
+ * pending real creatives (their Adsanity campaigns relied on
+ * ads.broadcastbeat.com, which is down). See PENDING_ads.md.
  */
 export const ADS_300X250: Ad[] = [
-  {
-    label: "AJA Video",
-    size: "300x250",
-    adsanity_id: "ad-164285",
-  },
-  {
-    label: "Zixi",
-    size: "300x250",
-    adsanity_id: "ad-156737",
-  },
   {
     label: "Telycam",
     size: "300x250",
@@ -56,37 +49,13 @@ export const ADS_300X250: Ad[] = [
     alt: "LiveU pay-as-you-go",
     click_url: "https://bit.ly/4ghXVeq",
   },
-  {
-    label: "Lectrosonics",
-    size: "300x250",
-    adsanity_id: "ad-156727",
-  },
-  {
-    label: "Opengear",
-    size: "300x250",
-    adsanity_id: "ad-200174",
-  },
-  {
-    label: "Studio Hero",
-    size: "300x250",
-    adsanity_id: "ad-162714",
-  },
-  {
-    label: "Magewell",
-    size: "300x250",
-    adsanity_id: "ad-154296",
-  },
 ];
 
 /**
  * 300x600 fixed sidebar slot. Rendered at the TOP of SidebarAdStack and is
- * NEVER rotated. Set to null to omit. To replace, swap this single entry.
+ * NEVER rotated. Set to null to omit. Blackmagic ATEM creative pending.
  */
-export const FIXED_300X600: Ad | null = {
-  label: "Blackmagic",
-  size: "300x600",
-  adsanity_id: "ad-210571",
-};
+export const FIXED_300X600: Ad | null = null;
 
 /** Fisher-Yates shuffle, returns a new array. */
 export function shuffle<T>(arr: T[]): T[] {
@@ -109,7 +78,7 @@ export function rotateAll(size: Ad["size"], exclude: Set<string> = new Set()): A
     : size === "728x90" ? ADS_728X90
     : size === "300x600" ? (FIXED_300X600 ? [FIXED_300X600] : [])
     : [];
-  const key = (a: Ad) => a.src ?? a.adsanity_id ?? a.label;
+  const key = (a: Ad) => a.src ?? a.label;
   return shuffle(pool.filter((a) => !exclude.has(key(a))));
 }
 

src/lib/articles/legacy-source.ts

@@ -28,7 +28,7 @@ interface ImportedPostRow {
   wp_published_at: string | null;
 }
 
-const FALLBACK_IMAGE = "/legacy/site/no_image.png";
+const FALLBACK_IMAGE = "/assets/images/article-placeholder.svg";
 
 // Tag → section mapping. Source: tag distribution observed in
 // bb.wp_imported_posts. Matches against any overlap (lowercased).
@@ -80,9 +80,16 @@ function readTime(content: string | null): string {
   return `${minutes} min read`;
 }
 
+// Featured-image URLs that we treat as "no image" — historical placeholders
+// that should resolve to the clean dark placeholder instead of the grey box.
+const BROKEN_IMAGE_PATTERNS = /no_image|BB_Gray|placeholder/i;
+
 function rowToArticle(row: ImportedPostRow, section: Section = "news"): Article {
-  const image = row.featured_image
-    ? rewriteLegacyImageUrl(row.featured_image)
+  const rawImage = row.featured_image && !BROKEN_IMAGE_PATTERNS.test(row.featured_image)
+    ? row.featured_image
+    : null;
+  const image = rawImage
+    ? rewriteLegacyImageUrl(rawImage)
     : FALLBACK_IMAGE;
   const content = rewriteLegacyImageUrlsInHtml(row.content || "");
   const author = row.author_name || "Staff Reporter";