wip-banner-system: real ads, logo fix, remove duplicate banner, clean footer

- Remove duplicate 728x90 LeaderboardAd below news ticker (per Ryan)
- Footer: remove NAB Official Media Partner badge
- Header: replace AdSlot stub with real AdImage rotation (3 verified 728x90s)
- Header: fix logo path from dead WP URL to local /assets/images/logo.png
- ads.ts: only include ads with verified real images (3x728x90, 2x300x250)
- ads.ts: remove 22 unrecovered ads — see PENDING_ads.md for upload list
- SidebarAdStack: handle null FIXED_300X600 gracefully (Blackmagic not recovered)
- public/legacy/ads/: 5 real ad images committed (Tower, Sony, LiveU 728x90; LiveU PAYG, Telycam 300x250)
- public/assets/images/logo.png: recovered from Wayback Machine

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/Footer.tsx

@@ -147,16 +147,6 @@ export default function Footer() {
           </div>
         </div>
 
-        {/* NAB Official Media Partner badge area */}
-        {/* DO NOT OVERRIDE — NAB partner badge section */}
-        <div className="border-t border-[#222] pt-4 pb-2 flex justify-center">
-          <div className="flex items-center gap-3 text-[#444] text-xs font-body">
-            <div className="w-8 h-8 bg-[#1a1a1a] border border-[#333] rounded flex items-center justify-center">
-              <span className="text-[#3b82f6] font-bold text-[10px]">NAB</span>
-            </div>
-            <span>Official Media Partner — NAB Show</span>
-          </div>
-        </div>
       </div>
     </footer>);