Align Workspace DNA with new Genesis positioning and add major content enhancements

- Update messaging to "Living Systems" with Memory/Intelligence/Execution
  layers (aligns with landing#5145 Workspace DNA redesign)
- Add Genesis Community Gallery with 12 real community apps and direct links
- Add Genesis Capabilities ASCII art block showcasing full feature set
- Expand Genesis, AI Agents, Automations, and AI Websites entries with
  Stripe, mobile, EVE, MCP v2, multi-model, and custom domain capabilities
- Add YouTube Genesis tutorial playlist (11 videos) to Podcasts & YouTube
- Add new tools: FastMCP, Claude Agent SDK, Mastra, Gumloop
- Add new "AI Browser Agents" section (browser-use, Bardeen, Skyvern, Multion)
- Add "MCP Design Principles" subsection with 5 best practices
- Add "Harness Engineering" and "Spec-Driven Development" best practices
- Add "The Middle Loop" concept to Vibe Coding Philosophies
- Update stats: Cursor $2B ARR, MIT Technology Review 2026 citation, 260+ tools
- Update glossary and comparison tables to use new terminology

Author: johnxie