Cost monitoring, PTT fix, Devon tuning, WEIRD pool expansion, YT thumbnails, LLM SEO, publish ep37

- Add real-time LLM/TTS cost tracking with live status bar display and post-show reports
- Fix PTT bug where Devon suggestion layout shift stopped recording via mouseleave
- Devon: facts-only during calls, full personality between calls
- Double WEIRD topic pool (109→203), bump weight to 14-25%
- Auto-generate YouTube thumbnails with bold hook text in publish pipeline
- LLM SEO: llms.txt, robots.txt for LLM crawlers, structured data, BreadcrumbList schemas
- Publish episode 37

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

website/robots.txt

@@ -1,4 +1,35 @@
 User-agent: *
 Allow: /
 
+# LLM crawlers — explicitly welcome
+User-agent: GPTBot
+Allow: /
+
+User-agent: ChatGPT-User
+Allow: /
+
+User-agent: ClaudeBot
+Allow: /
+
+User-agent: Claude-Web
+Allow: /
+
+User-agent: PerplexityBot
+Allow: /
+
+User-agent: Amazonbot
+Allow: /
+
+User-agent: GoogleOther
+Allow: /
+
+User-agent: Google-Extended
+Allow: /
+
+User-agent: cohere-ai
+Allow: /
+
+User-agent: Meta-ExternalAgent
+Allow: /
+
 Sitemap: https://lukeattheroost.com/sitemap.xml