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F5: add PPO, DPO and Coppock Curve price oscillators

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Completes the F5 family (Price oscillators) end to end:

- Rust core: ppo.rs (Percentage Price Oscillator — MACD as a percentage
  of the slow EMA), dpo.rs (Detrended Price Oscillator — shifted price
  minus its SMA), coppock.rs (Coppock Curve — WMA of two summed ROCs).
  Each with a full Indicator impl, runnable doctest and reference /
  constant-series / warmup / reset / batch==streaming / non-finite tests.
- Python: PyPpo / PyDpo / PyCoppock PyO3 classes + module registration
  + .pyi stubs (defaults PPO=(12,26), DPO=20, Coppock=(14,11,10)).
- Node: DpoNode via the scalar macro, explicit PpoNode and CoppockNode;
  index.d.ts and index.js updated.
- WASM: WasmDpo / WasmPpo / WasmCoppock via the scalar macro.
- Wiki: Indicator-Ppo/Dpo/Coppock.md plus rows in Indicators-Overview.md
  and entries in Home.md.

cargo fmt + clippy (core/wickra/data/wasm/node) clean; 300 core tests,
25 data tests and 42 doctests green.
This commit is contained in:
kingchenc
2026-05-22 18:09:10 +02:00
parent e24e7726ce
commit 54148cad5b
15 changed files with 1385 additions and 4 deletions
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docs/wiki/Home.md
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@@ -104,6 +104,9 @@ Rust / Python / Node examples. They are grouped by family, mirroring the
- [Indicator-Pmo.md](indicators/momentum/Indicator-Pmo.md)
- [Indicator-StochRsi.md](indicators/momentum/Indicator-StochRsi.md)
- [Indicator-UltimateOscillator.md](indicators/momentum/Indicator-UltimateOscillator.md)
- [Indicator-Ppo.md](indicators/momentum/Indicator-Ppo.md)
- [Indicator-Dpo.md](indicators/momentum/Indicator-Dpo.md)
- [Indicator-Coppock.md](indicators/momentum/Indicator-Coppock.md)
**Volatility** — envelope width and per-bar dispersion measures.