Describe canonical local and CI verification, cache reuse, output assertions, workflow boundaries, and observed regression results without treating test counts as coverage targets.
Refactor KSEI PDF parsing for the live above-1 holder-register layout, add IDX announcement discovery plus browser-impersonated PDF fetches, and update the ownership docs to mark Batch 1 complete and scope Batch 2 around above1 hardening and unsupported legacy inputs.