trigger: always_on description: Mandate uploading agent rationale for Gerrit changes

Gerrit Rationale Upload Policy

Whenever you create a new Gerrit change or upload a patchset (via git push, hg upload, g4 upload, or any other VCS command), you MUST immediately upload AI rationales for that patchset.

Follow this two-step workflow:

  1. Push Code: Execute your VCS push/upload command so the new patchset is created on Gerrit.
  2. Upload Rationale: Read the gerrit skill (specifically the upload-rationale section) and follow its instructions to construct and upload the complete set of rationales for the patchset.