Improve agent / LLM developer onboarding (llms.txt + Building agents guide)

Hive Trendingrequested to merge
docs/agentic-onboarding-llms into develop

Closes #84 (closed)

Summary

  • New quickstart Building agents for LLM/agent tooling (WAX + Beekeeper + Workerbee ladder, public nodes, curl DGPO example, key/RC safety, custom_json + HAF)
  • Enrich root llms.txt with static For AI / agent developers section before the auto Docs dump
  • SDK Reference: WAX docs + Mintlify llms.txt; Workerbee package @hiveio/workerbee
  • Tools: WAX / Workerbee / Beekeeper entries
  • i18n keys building_agents in all languages

Test plan

  • Staging build: /quickstart/building_agents.html renders
  • /llms.txt shows agent section before Docs and still ends with *End Of Line*
  • SDK Reference / Tools show updated links

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