v0.2.2

Changelog

• f3a47bd chore: add github stacked PR skill
• a987873 fix(aggregator): drain resultsCh on early return and stop polling a closed errCh
• c429734 fix(cmd): force-exit on a second SIGINT and stop skipping signal cleanup
• 4813c9f fix(gitengine): bound REF_DELTA recursion and harden object-store lifetime
• 1d9862e fix(gitengine): thread context through history walking
• c1836e6 fix(globals): make package-level lookup state immutable
• e485a09 fix(output): make rendering cancellable mid-stream
• 3bb1827 fix(search): stop pipeline work on cancellation, fatal errors, and panics
• 72ad666 test(leak): grow stack dump dynamically and cover wedged pipeline paths