Merge branch 'dev'

lib/trends_FIR/sp15/Sp15.md

@@ -15,8 +15,6 @@
 
 - SP15 is a fixed-coefficient symmetric FIR filter with 15 weights: $[-3, -6, -5, 3, 21, 46, 67, 74, 67, 46, 21, 3, -5, -6, -3]$ divided by 320.
 - No configurable parameters; computation is stateless per bar.
-- Output range: Tracks input.
-- Requires `Period` bars of warmup before first valid output (IsHot = true).
 - Validated against TA-Lib, Skender, and Tulip reference implementations where available.
 
 SP15 is a fixed-coefficient symmetric FIR filter with 15 weights: $[-3, -6, -5, 3, 21, 46, 67, 74, 67, 46, 21, 3, -5, -6, -3]$ divided by 320. The weights were designed by John Spencer to have zero frequency response at periods 4 and 5 (frequencies $2\pi/4$ and $2\pi/5$), making the filter effective at removing quarterly and quintile seasonal components from economic time series. The negative edge weights provide bandpass-like characteristics, and the fixed design requires no parameters beyond the source series.
@@ -128,4 +126,4 @@ O(1) per bar (N is fixed at 15). The dot product takes ~60 cycles on modern x86.
 | Negative edge weights | Yes | Signed FMA; no special masking |
 | Fixed-N: 15 taps | Yes | Compiler can fully unroll the 15-FMA loop at O3 |
 
-With symmetric folding (8 unique weight pairs), the 15-tap dot product reduces to ~8 FMAs. AVX2 processes 4 output bars per outer iteration. Batch throughput: ~2 cycles per output bar at peak. Unrolled codegen fits entirely in instruction cache.
+With symmetric folding (8 unique weight pairs), the 15-tap dot product reduces to ~8 FMAs. AVX2 processes 4 output bars per outer iteration. Batch throughput: ~2 cycles per output bar at peak. Unrolled codegen fits entirely in instruction cache.