feat: Aug 4 2026 update — sync EN-only additions to zh/ja (MCP stateless spec, Microsoft Agent Framework, OpenAI Agents SDK, CrewAI 1.15.10, Google ADK 2.6.x, Mem0, A2A v1.0+AP2, CrowdStrike/Straiker/EU AI Act security, Devin Stacked PRs, tau2-bench v1.0.1, Perplexity PC for Windows, Seedance 2.5, Grok Voice Think Fast 2.0, GPTBots LoopAgent, Tesla+Doubao); fix PerspectiveGap repo link per PR #73 follow-up (WhymustIhaveaname/PerspectiveGap, 3 langs); fix Agent Frameworks ordering drift; bump badges to Aug 4 / 819+ entries

3-lang sync_audit: zero drift (819/819/819 entries, 116/116/116 headings)
check_markdown: clean on all 3 files

Author: Zijian-Ni