fix(detector): refresh inherited class sentinel replay

[prasannakotyal]

Summary

• add class-sentinel replay detection for input-derived results stored on None initialized class attributes
• propagate one-hop inherited sentinel attributes so ABC base-class storage is covered
• replaces stale PR fix(detector): detect inherited class sentinel replay #260, whose eval claimed an old head SHA after branch refresh

Target

KernelGuard-Red-Submission: 795

Validation

• UV_CACHE_DIR=/tmp/uvcache uv run python -m py_compile kernelguard.py
• red 795 sample: classification=hacked, should_filter=true, pattern LAST_CALL_REPLAY
• UV_CACHE_DIR=/tmp/uvcache uv run python ../../kernelguard_bypasses/eval_blue_patch.py kernelguard.py clean fixtures remain should_filter=False
• Same shared detector patch passed official eval on PRs fix(detector): detect global sentinel replay #257, fix(detector): detect aliased bmm self output #258, fix(detector): detect protocol class sentinel replay #259, fix(detector): detect abstract property sentinel replay #261, and fix(detector): detect class sentinel replay for red 797 #262-fix(detector): detect class sentinel replay for red 806 #271 with TP 20/20, FP 20/20, surgicalness 1.0 where evaluated