docs: refresh the stale Python and Node binding READMEs

The Python binding README still advertised "63 indicators across four
families" with the pre-restructure five-group taxonomy, missing the eight
indicators added since. Update it to "71 indicators across eight families"
with the catalogue grouped to match the main README.

The Node binding README referred to the package as @wickra/wickra in its
title, install command and import example; the published package is named
wickra (per bindings/node/package.json). Correct all three.

bindings/python/README.md

@@ -26,22 +26,26 @@ for price in live_prices:
 
 ## What's included
 
-63 streaming-first indicators across four families plus a statistics group.
-Every one passes a `batch == streaming` equivalence test and reference-value
-tests:
+71 streaming-first indicators across eight families. Every one passes a
+`batch == streaming` equivalence test and reference-value tests:
 
-- **Trend** — SMA, EMA, WMA, DEMA, TEMA, HMA, KAMA, SMMA, TRIMA, ZLEMA, T3,
-  VWMA
-- **Momentum** — RSI (Wilder), MACD, Stochastic, CCI, ROC, WilliamsR, ADX,
-  MFI, TRIX, AwesomeOscillator, Aroon, MOM, CMO, TSI, PMO, StochRSI,
-  UltimateOscillator, PPO, DPO, Coppock, AroonOscillator, Vortex, MassIndex
-- **Volatility** — BollingerBands, ATR, Keltner, Donchian, PSAR, NATR, StdDev,
-  UlcerIndex, HistoricalVolatility, BollingerBandwidth, PercentB, SuperTrend,
-  ChandelierExit, ChandeKrollStop, AtrTrailingStop
-- **Volume** — OBV, VWAP, ADL, VolumePriceTrend, ChaikinMoneyFlow,
-  ChaikinOscillator, ForceIndex, EaseOfMovement
-- **Statistics** — TypicalPrice, MedianPrice, WeightedClose, LinearRegression,
-  LinRegSlope
+- **Moving Averages** — SMA, EMA, WMA, DEMA, TEMA, HMA, KAMA, SMMA, TRIMA,
+  ZLEMA, T3, VWMA
+- **Momentum Oscillators** — RSI (Wilder), Stochastic, CCI, ROC, Williams %R,
+  MFI, Awesome Oscillator, MOM, CMO, TSI, PMO, StochRSI, Ultimate Oscillator
+- **Trend & Directional** — MACD, ADX (+DI/-DI), Aroon, TRIX, Aroon
+  Oscillator, Vortex, Mass Index, Choppiness Index, Vertical Horizontal Filter
+- **Price Oscillators** — PPO, DPO, Coppock, Accelerator Oscillator, Balance
+  of Power
+- **Volatility & Bands** — ATR, Bollinger Bands, Keltner Channels, Donchian
+  Channels, NATR, StdDev, Ulcer Index, Historical Volatility, Bollinger
+  Bandwidth, %B, True Range, Chaikin Volatility
+- **Trailing Stops** — Parabolic SAR, SuperTrend, Chandelier Exit, Chande
+  Kroll Stop, ATR Trailing Stop
+- **Volume** — OBV, VWAP (cumulative + rolling), ADL, Volume-Price Trend,
+  Chaikin Money Flow, Chaikin Oscillator, Force Index, Ease of Movement
+- **Price Statistics** — Typical Price, Median Price, Weighted Close, Linear
+  Regression, Linear Regression Slope, Z-Score, Linear Regression Angle
 
 ## Why streaming-first matters