Speculative verification changes how a target model batches its queries. In a quantized deployment, that change can alter the generated tokens even when the verification algorithm is mathematically valid. We present a phase-scoped query-to-batch (QB) transformation that preserves an existing greedy reference while retaining batched projections and feed-forward computation. QB represents independent attention queries through matched query and mask views, shares K/V storage, and makes the selected layout part of graph reuse. In a six-session experiment spanning two dates, it reduces speculative request latency relative to explicit per-query attention by 3.06%, 6.17% and 2.83% for Qwen3, SmolLM2 and Llama, with complete reference-output agreement on the fixed panel. A separate 72-context CUDA replay covers three layer positions, both execution phases and query widths one to four; QB and per-query attention agree bitwise at QK, softmax and AV. Controlled Vulkan experiments identify two limits to transferring this local repair. Earlier computation can create consequential state differences, and endpoint-equivalent states need not remain equivalent under component replacement. Independently, the lifted query axis fails a necessary operator-support condition in the frozen Vulkan backend. Together, the results establish a concrete local implementation benefit and distinguish the representation, state and backend conditions that a reference-preserving deployment must satisfy.

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