v3.49: revert 4.24 runner fallback, enforce context_descriptor substitution ban#23

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FluffyAIcode wants to merge 6 commits intomainfrom

AgentMemory/v349-runner-fallback-revert-7e97

Commits on Apr 21, 2026

v3.48 stacked mechanisms 1+2+3+4: 120-step train + audit = 19/26 (prediction partially refuted)

cursoragent
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FluffyAIcode
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v3.49: revert 4.24 runner fallback, enforce context_descriptor substitution ban

cursoragent
and
FluffyAIcode
committed