"""Write tool executors — side-effecting MCP tool implementations.

Each sub-module handles a domain of write operations:
  repos      → create_repo
  issues     → create_issue, update_issue, create_issue_comment
  proposals  → create_proposal, merge_proposal, create_proposal_comment, submit_proposal_review
  releases   → create_release
  labels     → create_label
  agents     → agent_notify, agent_broadcast
  domains    → publish_domain
  coord      → coord_reserve, coord_release, coord_enqueue, coord_claim_task,
                coord_complete_task, coord_fail_task, coord_extend_reservation

All public functions are async, accept plain scalar arguments extracted from
the MCP ``arguments`` dict, and return ``MusehubToolResult``.
"""