model card: the ANE arm holds the floor from 90d4dd2; the two graph rewrites named; GPU stays the recommended default

siglip2-base-patch16-naflex-512: vision tower holds the fidelity floor on the Apple Neural Engine (explicit MAP attention-pooling head, tail-exact tanh-GELU); weights unchanged; GPU path unchanged to 5.9e-7 (coremlit #51, PR #154)

feat: cover tokenizer.json in CHECKSUMS

feat: ship tokenizer.json with the artifact (coremlit stops embedding it)

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initial commit