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DO NOT MERGE: C25 revert probe for #4630 (serve KV back to fixed 4096) - #4631

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noahgift wants to merge 43 commits into

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devont/k1-revert-red

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DO NOT MERGE: C25 revert probe for #4630 (serve KV back to fixed 4096)#4631
noahgift wants to merge 43 commits into
mainfrom
devont/k1-revert-red

Commits on Sep 28, 2026
- fix(serve): a turn past the device KV cache is a 400 "context exceeds N", not a 500 (D5)
  
  noahgift
  and
  claude
  committed
  bebc388
- roadmap: PMAT-4616 (D5): the ticket #4614 implements, not #3715
  
  noahgift
  and
  claude
  committed
  167bd5e
- evidence(PMAT-4616): pr-review receipt for 167bd5e126 (reviewer sonnet-5, DEGRADED, advisory finding)
  
  noahgift
  and
  claude
  committed
  9243b42
- evidence(PMAT-4616): commit the CI signer's signature for the 167bd5e126 receipt
  
  noahgift
  and
  claude
  committed
  099d07d
- fix(cuda): chunk the dense batched prefill; QK-norm models stop taking the serial prefill (#3715)
  
  noahgift
  and
  claude
  committed
  b96392c
- fix(chat): size the chat device KV to the context when VRAM allows (#3715)
  
  noahgift
  and
  claude
  committed
  1c4b84c
- fix(cuda): Qwen3.5 prefill dequantizes F16 and IQ4_XS on the device (#3715)
  
  noahgift
  and
  claude
  committed
  81a7908
- fix(cuda): a QK-norm model keeps the serial prefill when its FP16 batched prefill does not fit (#3715)
  
  noahgift
  and
  claude
  committed
  fdc165f
Commits on Sep 29, 2026