Keyword-based detection for users repeatedly asking to be unblocked in
chat. Fires an LLM-generated snarky redirect (with static fallback),
tracks per-user nag count with escalating sass, and respects a 30-min
cooldown. Configurable via config.yaml unblock_nag section.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>