feat(discord): support renaming existing threads

[liudt921115]

Summary

• add discord_admin(action="edit_thread")
• rename an existing Discord thread through the REST API
• expose the action in the dynamic manifest/schema
• add request/response regression coverage

Verification

• ./venv/bin/python -m pytest -q tests/tools/test_discord_tool.py

[alt-glitch]

This was generated by AI during triage.

Duplicate of #46397 — same mechanism (rename an existing Discord thread via PATCH /channels/{id} in tools/discord_tool.py), only the action name differs (edit_thread here vs rename_thread in #46397). #46397 is the earliest-open canonical implementation. This is a heavily duplicated feature area (see tracking issue #18430).

[webtecnica]

Closing as duplicate — this feature was already implemented and merged in #60187 (feat(discord): rename auto-created threads to generated session titles) by @teknium1 on Jul 7, which adds thread renaming with auto-generated session titles through the existing title_callback mechanism. Appreciate the contribution! 🙏

[teknium1]

Thanks for adding a direct thread-renaming primitive. Current main already renames Hermes-created auto-threads after title generation (gateway/run.py:13796-13843), but it does not expose an action for an arbitrary existing thread (tools/discord_tool.py:633-676), so the requested capability is still distinct.

Problems

• tools/discord_tool.py:620 PATCHes /channels/{channel_id} without first checking the target type. The canonical open implementation in #46397 documents that this endpoint can also rename ordinary channels and guards it by accepting only thread types 10/11/12. This action should not rename a top-level channel when asked to rename a thread.
• The diff also includes unrelated cron, provider-resolution, gateway-onboarding, and bot-relay work. Those changes are outside the stated Discord tool feature and should not be coupled to it.

Suggested changes

• GET the target channel first, reject non-thread types with a structured error, and add text-channel/forum rejection tests alongside the successful-thread test.
• Keep the salvage focused on tools/discord_tool.py and its corresponding tests; split the other changes.

Automated hermes-sweeper review.

[teknium1]

This modifies any Discord channel ID, not just a thread. Please GET the target first and accept only thread types 10/11/12 before PATCHing; otherwise an agent asked to rename a thread can rename a top-level text channel.