ci, iwyu: Fix warnings in src/zmq and treat them as errors #34338

1. 
   hebasto commented at 12:24 pm on January 19, 2026: member

   This PR continues the ongoing effort to enforce IWYU warnings.

   Previous PRs:

   • #33810
   • #31308
   • #34079
   • #33779

   For accompanying documentation, please see Developer Notes.

   Additionally, this adds a new include category to src/.clang-format.

2. hebasto added the label Refactoring on Jan 19, 2026
3. 
   DrahtBot commented at 12:24 pm on January 19, 2026: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/34338.

   Reviews

   See the guideline for information on the review process. A summary of reviews will appear here.

   Conflicts

   Reviewers, this pull request conflicts with the following ones:

   • #34352 (ci, iwyu: Fix warnings in src/primitives and treat them as errors by hebasto)

   If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

4. hebasto force-pushed on Jan 19, 2026
5. 
   hebasto commented at 5:09 pm on January 19, 2026: member

   Rebased to resolve a conflict with the merged bitcoin/bitcoin#34296.
6. ci, iwyu: Fix warnings in `src/zmq` and treat them as errors 01ab21f838
7. hebasto force-pushed on Jan 20, 2026
8. 
   hebasto commented at 11:31 am on January 20, 2026: member

   Rebased.
9. hebasto added the label RPC/REST/ZMQ on Jan 20, 2026

Contributors
hebasto DrahtBot

Labels
Refactoring RPC/REST/ZMQ