Builds a structured bug-bash session - pre-bash kit (charter, test-data prep, environment setup, sign-up sheet), in-bash structure (role rotation across cohorts, shared backlog board, real-time triage), scoring rubric (severity weighting, novelty bonus), and a post-bash same-day wrap-up authored by the facilitator (not a standalone debrief: for post-session writeups without a live bash, use manual-test-debrief). Use when a team needs a coordinated multi-tester sweep before a release or after a major change - converts an ad-hoc "everyone test for an hour" into a recorded, comparable session with deliverables.