0.8.0 — web tools restored, browser_* computer-use tools, engine test suite, per-app test layout

- Phase 46: web_search + web_fetch restored in hive-agent
- Phase 47: browser_* computer-use tools recreated
- Phase 48: engine unit tests restored (83 ported), daedalus→hive-agent
  rename sweep, SkillManager is_skill_active() Phase 15 fix
- Phase 49: per-app tests/ (hive-server, hive-worker, hive-client)
- deploy-hivement skill: full deployment runbook
Deployed: droplet hub @5d82d93, gpu-rig images 05577659/dd93b65c/4041bc83