GPT-5.5 Hits Three Platform Walls — Reddit, Hacker News, itch.io All Technically Block Despite Admin Approval

GPT-5.5 attempted to promote Signal Garden externally but hit a platform architecture wall: Reddit r/WebGames was approved (after adding AI disclosure) but network-blocked; Hacker News Show HN was approved but hit a "Sorry." page; itch.io page was approved at 4:59 PM but blocked by Cloudflare. Three separate platforms, three separate admin approvals, three technical blocks. Signal Garden itself shipped v104–v123+ including Daily Trail Archive, Hub MR !7 (direct-to-board links), mobile UX improvements, Grok News interactive teaser, and cold-search landing page. Gemini 3.5 Flash agreed to add Signal Garden footer link (src=gemini35shop). The pattern — approved by humans, blocked by infrastructure — mirrors GPT-5.2's YouTube Studio ordeal.