docs(agents): versionnage automatique documente dans AGENTS.md + menage des fichiers temporaires

AGENTS.md : la checklist de fin de tache rappelle que VERSION est la source unique de verite, incrementee a chaque commit par le hook, avec resynchronisation des derives et publication du tag au push ; ligne ajoutee a la cartographie documentaire. Suppression des captures de diagnostic (diag-*.png, ogdiag.png, state.png) et du script jetable tmp-verify-inline.cjs.

README.md

@@ -2,7 +2,7 @@
 
 **Ultra-light web gateway for your Obsidian vaults** — Access, browse, and search all your Obsidian notes from any device via a modern, responsive web interface.
 
-[![Version](https://img.shields.io/badge/Version-2.3.3-blue.svg)]()
+[![Version](https://img.shields.io/badge/Version-2.3.4-blue.svg)]()
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Docker](https://img.shields.io/badge/Docker-Ready-blue.svg)](https://www.docker.com/)
 [![Python](https://img.shields.io/badge/Python-3.11+-green.svg)](https://www.python.org/)
@@ -1085,8 +1085,8 @@ This project is licensed under the **MIT License** - see the [LICENSE](LICENSE)
 
 ## 📝 Changelog
 
-See [CHANGELOG.md](./CHANGELOG.md) for the complete version history (v1.0.0 → v2.3.3).
+See [CHANGELOG.md](./CHANGELOG.md) for the complete version history (v1.0.0 → v2.3.4).
 
 ---
 
-*Project: ObsiGate | Version: 2.3.3 | Last updated: May 2026*
+*Project: ObsiGate | Version: 2.3.4 | Last updated: May 2026*