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F6: add Aroon Oscillator, Vortex and Mass Index

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Completes the F6 family (Trend strength) end to end:

- Rust core: aroon_oscillator.rs (AroonUp - AroonDown, one-line trend
  gauge), vortex.rs (Vortex Indicator VI+/VI- with the VortexOutput
  struct), mass_index.rs (Dorsey's range-expansion sum of the
  EMA-of-range ratio). Each with a full Indicator impl, runnable doctest
  and reference / saturation / warmup / reset / batch==streaming tests.
- Python: PyAroonOscillator / PyVortex / PyMassIndex PyO3 classes +
  module registration + .pyi stubs (defaults Aroon=14, Vortex=14,
  MassIndex=(9,25)).
- Node: explicit AroonOscillatorNode, VortexNode (with VortexValue
  object) and MassIndexNode; index.d.ts and index.js updated.
- WASM: WasmAroonOscillator, WasmVortex, WasmMassIndex.
- Wiki: Indicator-AroonOscillator/Vortex/MassIndex.md plus rows in
  Indicators-Overview.md and entries in Home.md.

cargo fmt + clippy (core/wickra/data/wasm/node) clean; 320 core tests,
25 data tests and 45 doctests green.
This commit is contained in:
kingchenc
2026-05-22 18:17:38 +02:00
parent 54148cad5b
commit 16c0639f0c
15 changed files with 1713 additions and 7 deletions
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docs/wiki/Home.md
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@@ -107,6 +107,9 @@ Rust / Python / Node examples. They are grouped by family, mirroring the
- [Indicator-Ppo.md](indicators/momentum/Indicator-Ppo.md)
- [Indicator-Dpo.md](indicators/momentum/Indicator-Dpo.md)
- [Indicator-Coppock.md](indicators/momentum/Indicator-Coppock.md)
- [Indicator-AroonOscillator.md](indicators/momentum/Indicator-AroonOscillator.md)
- [Indicator-Vortex.md](indicators/momentum/Indicator-Vortex.md)
- [Indicator-MassIndex.md](indicators/momentum/Indicator-MassIndex.md)
**Volatility** — envelope width and per-bar dispersion measures.