docs: prepend REQUIRED warning — jangtq_runtime.safetensors sidecar must be downloaded

docs: clarify warning — Osaurus loader is Swift-only, sidecar is required

docs: add re-download warning for late-added jangtq_runtime.safetensors codebook sidecar

config.json: per-module overrides + rope_parameters (metadata bug fix) (#1)

config.json: per-module quant overrides + rope_parameters (metadata bug fix)

fix(eval): correct pass@1=81.10/pass@5=90.24 after extractor bug fix

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remove stale jangq logo from osaurus-branded repo

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initial commit