Renamed: q_bf16→q_host, bf16_uniform→uniform, host_bf16→host,
bf16_raw→raw, bf16_pred→pred, raw_bf16_ptr→raw_f32_ptr (removed dup).
Removed stale comments: "no bf16 NaN risk", "no bf16 overflow",
"no bf16 precision loss", "BF16 bias+relu kernels".
Removed redundant .to_vec() clones from test helpers.
Also includes precommit fixes:
- CRITICAL: backward_full uses padded_byte_offset for ALL offsets
- HIGH: Graph + xLSTM params documented as fixed-init by design
- LOW: Diffusion denoiser K=3→K=2 (eliminates ping-pong copy)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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