Cursor custom ids can arrive as k3 (or kimi/k3), which
isKimiK3ModelId does not match; the bundled kimi-code catalog defines
k3 as the 1,048,576-token Kimi K3 model while k3-256k is the 256k
SKU, so gate the bare form with an exact-match pattern that keeps
k3-256k at the default window.
Matt
8dca9772b9