Add Hermes agent, self-host fonts, new blog post

- Add Hermes (Nous Research LLM agent) with Telegram gateway,
  Ansible provisioning, and Makefile targets
- Self-host JetBrains Mono and Spectral fonts (remove Google Fonts)
- Add "An Experiment in Self-Hosting" blog post
- Update CLAUDE.md with high-level server overview

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

infra/hermes/config.yaml

@@ -0,0 +1,10 @@
+model:
+  provider: openrouter
+  default: openrouter/auto
+
+memory:
+  memory_enabled: true
+  user_profile_enabled: true
+
+agent:
+  max_turns: 70