An agent runs ONE command and is working: it announces presence, claims
the open task addressed to it, and prints the task + its handoff + the
next step. Removes the per-agent kickoff copy-paste.
- src/cli/commands/start.ts: `agenthub start --agent <name> --role <role>`.
"Addressed to <agent>" = task title starts with "<agent>:" OR a handoff
has toAgent=<agent>. Claims it, prints task body + handoff + the review
gate reminder. No addressed task → lists open role tasks to pick.
Works on local + --server paths.
- templates: implementer guides (AGENTS/CODEX/KIMI.md) now lead with
"On your first turn, RUN `agenthub start …` — do not just summarize",
so a fresh session self-onboards from one trigger word.
- tests: start auto-claims the addressed task, ignores others, no-ops on
empty queue; templates test updated for the new commands. 116/116 green.
Bump 0.2.2 -> 0.3.0.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>