F-Abschluss: wire the Python package, refresh docs and extend the test suites

Finalises the F1-F12 indicator expansion (25 -> 63 indicators).

- Python `wickra/__init__.py`: import and re-export all 63 indicators,
  grouped by family, with a matching `__all__`. The package previously
  exposed only the original 25 even though the compiled module and the
  `.pyi` stubs already carried the rest.
- Docs: `Home.md` and `README.md` indicator counts and family tables
  updated to 63; `Indicators-Overview.md` already restructured per family
  in F10-F12; `Warmup-Periods.md` gains all 38 new indicators across the
  single- and multi-output tables (and the stale two-arg `Psar::new`
  example is corrected to three args); `CHANGELOG.md` `[Unreleased]` lists
  every new indicator by family.
- Tests: `bindings/node/__tests__/indicators.test.js` covers all 63
  indicators (streaming==batch plus four new reference-value checks),
  80/80 green; new `bindings/python/tests/test_new_indicators.py` covers
  the 38 additions (streaming==batch, shapes, reference values,
  lifecycle), Python suite 105/105 green.
- `bindings/node/index.js` regenerated by `napi build`.

cargo fmt + clippy (core/wickra/data/wasm/node) clean; 454 core tests,
25 data tests, 66 doctests, 80 Node tests and 105 Python tests green;
`cargo check -p wickra-wasm --tests` green.

docs/wiki/Home.md

@@ -7,9 +7,10 @@ Node.js, WebAssembly, and Rust itself. The same `update` call you write inside
 a live trading loop also drives the historical backtest of that same
 strategy — there is no second code path that drifts behind the streaming one.
 
-The project ships 25 indicators across the four classical families (trend,
-momentum, volatility, volume) and a small set of supporting types (`Candle`,
-`Tick`, `Chain`). The Rust core forbids `unsafe`, so every binding inherits a
+The project ships 63 indicators across the four classical families (trend,
+momentum, volatility, volume) plus a statistics group, and a small set of
+supporting types (`Candle`, `Tick`, `Chain`). The Rust core forbids `unsafe`,
+so every binding inherits a
 memory-safe implementation. Install is one command on every supported
 platform: `pip install wickra`, `cargo add wickra`, `npm install wickra` — no
 system compilers, no C dependencies, no headers.