Derived from harshatheg/Qwen-2.5-1B-RLCD at commit
2af86848be75847ccb3553b0941cc51d6ef7e4e9 under Apache-2.0.
Original documentation and attribution are preserved. Fast additions provide shared-prefix
tree attention and Apple M4 Pro benchmarks. Base weights are downloaded separately from
Qwen/Qwen2.5-1.5B-Instruct.