May 23

1. 14:28

   second review fixes

   prometheus04
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   f4d2cf2
2. 07:41

   Muon optimizer + README

   prometheus04
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   3ac4183
3. 07:21

   add ablation harness

   prometheus04
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   ac618f3
4. 06:35

   GPU-session fixes (RNG cpu, shard filter, cu124, 3090 config)

   prometheus04
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   511257f
5. 05:19

   Matilda-Mini phases 1-5 + runbook

   prometheus04
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   880f286