v0.8.6: update indicator docs, ndepend tooling, ALMA refactor, gitignore cleanup

lib/numerics/decay/Decay.md

@@ -13,9 +13,7 @@
 | **PineScript**   | [decay.pine](decay.pine)                       |
 
 - DECAY (Linear Decay) tracks the maximum of the current input and the previous output minus a fixed absolute step of `1/period`.
-- Parameterized by `period` (default 5).
-- Output range: Same as input — this is an overlay indicator.
-- Requires `1` bar of warmup before first valid output (IsHot = true).
+- **Similar:** [EDecay](../edecay/Edecay.md) | **Trading note:** Linear decay function; models signal fading over time. Used for recency-weighted calculations.
 - Validated against Tulip Indicators `ti_decay` reference algorithm.
 
 DECAY implements the Tulip Indicators `ti_decay` function. When price is above the decayed level, output snaps to price. When price falls below, the output decays linearly at a rate of `1/period` per bar, creating a ceiling that gradually descends. This produces a one-sided envelope that hugs price from above.
@@ -149,4 +147,4 @@ reaching zero after $k = v \cdot p$ bars (assuming $v > 0$).
 ## References
 
 - Tulip Indicators Library: https://tulipindicators.org/decay
-- Kegel, L. "Tulip Indicators" — Open-source C library of technical indicators.
+- Kegel, L. "Tulip Indicators" — Open-source C library of technical indicators.