splice-issue

Break a large GitHub issue from bbvch-ai/aihub-core into self-contained, independently mergeable sub-issues with blocked-by dependency relationships. Use when user says 'splice this issue', 'split issue into sub-issues', 'break down issue #X', 'create sub-issues for #X', 'slice this issue', or 'decompose this issue'. Takes an issue number or URL as argument. Do NOT use for implementation planning within a single…