LeetCUDA 20261023

What's Changed

• book: fix math and quantization errors from chapter audit by @DefTruth in #567
• docs: sync EN dictionaries with book audit fixes by @DefTruth in #568
• book: wave-2 math audit (ch00-ch14) + cute-zhihu CuTe chapters errata by @DefTruth in #569
• book: third-round math audit of attention and quantization chapters by @DefTruth in #570
• book: fix 10 figure overlaps, unify per-group (16) naming, drop corner-bracket quotes by @DefTruth in #571
• docs: add CuTe article collection to the Read the Docs site by @DefTruth in #572
• book: appendix math audit (R19) + full-book correctness read-through errata (R20) by @DefTruth in #574
• book: R21 full-book math audit (formula re-derivation, listing boundaries, refs) - 16 H + 37 M fixes by @DefTruth in #575
• docs: fix RTD English dictionary checks after R21 range changes by @DefTruth in #576

Full Changelog: v4.1.1...v4.1.2