Add resolve/unresolve support to update_issue_note

[Copilot]

Implements GitLab API's thread resolution for issue discussions via update_issue_note, bringing parity with merge request discussion functionality.

Changes

• Schema (UpdateIssueNoteSchema): Added optional resolved: boolean field with mutual exclusivity validation (only body XOR resolved per GitLab API)
• Function (updateIssueNote): Changed signature to accept optional body and resolved parameters, conditional payload construction
• Handler: Updated tool invocation to pass resolved parameter

Usage

{
  "name": "update_issue_note",
  "arguments": {
    "project_id": "org/repo",
    "issue_iid": "42",
    "discussion_id": "abc123",
    "note_id": "456",
    "resolved": true
  }
}

API: PUT /projects/:id/issues/:issue_iid/discussions/:discussion_id/notes/:note_id

Pattern matches update_merge_request_discussion_note implementation for consistency.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• docs.gitlab.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>update_issue_note support resolve</issue_title>
<issue_description>https://docs.gitlab.com/api/discussions/#resolve-an-issue-thread</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes update_issue_note support resolve #283

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