CP shared-KV bs>1 uses cp_shared_kv_prefill_max_total_extend_tokens as its grouping admission limit, but the generic max_prefill_tokens budget could still stop batching earlier. Raise only the legacy input-token admission budget for this CP path while keeping allocator-owned capacity checks unchanged.
Constraint: CP shared-KV bs>1 needs large cache-hit batches without relying on the generic max_prefill_tokens default.
Constraint: Allocator capacity must remain enforced by rem_total_tokens, cur_rem_tokens, and prepare_for_extend().
Rejected: Increase server-wide max_prefill_tokens | would change generic scheduler behavior and non-CP paths.
Confidence: high
Scope-risk: narrow
Directive: Do not use max_prefill_tokens as the CP shared-KV bs>1 grouping limit; use the CP-specific total extend token knob.
Tested: Local py_compile for schedule_policy.py and test_prefill_adder.py.
Tested: Remote pytest targeted CP PrefillAdder cases: 5 passed.
Tested: Remote pytest test/registered/unit/managers/test_prefill_adder.py: 16 passed.
Not-tested: Full ETE replay after this scheduler-only change.
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