Run an exhaustive multi-agent end-to-end QA, bug discovery, root-cause remediation, regression, stress, accessibility, security, data-integrity, and release-readiness audit on an existing software project. Use when the user explicitly requests QA-HVN, a full QA audit, an exhaustive bug hunt, multi-agent test-and-fix work, or release-readiness verification. Do not use for a narrow bug fix, routine test run, lightweight code review, or quick smoke test.