RopeScaling

RoPE frequency-scaling family (long-context extension). Every family also folds an OPTIONAL 1-D [rotary_dim/2] freq_factors per-band divisor table into its frequencies (absent ⇒ no division); the 2-D [2, rotary_dim/2] short/long-row form belongs to the LongRoPE families alone, which REQUIRE a table in one of the two shapes.