feat: TA-Lib candlestick patterns — matching-low/lines/three-methods (part 7 of 9) (#139)

Adds five TA-Lib candlestick patterns, all `Input = Candle`, `Output = f64`
(`+1.0` bullish / `-1.0` bearish / `0.0` no pattern), wired across core,
Python/Node/WASM bindings, fuzz, and tests.

- **Matching Low** (`CDLMATCHINGLOW`) — 2-bar bullish reversal: two black candles in a decline share the same close, signalling selling pressure is exhausting; bullish +1.
- **Long Line** (`CDLLONGLINE`) — a candle whose range beats a rolling average of recent ranges with a body-dominated range; bullish +1 (white) / bearish -1 (black).
- **Short Line** (`CDLSHORTLINE`) — a compact candle whose range falls below the rolling average with a body-dominated range; bullish +1 (white) / bearish -1 (black).
- **Rising Three Methods** (`CDLRISEFALL3METHODS`) — 5-bar bullish continuation: a long white candle, three small bars holding within its range, then a white breakout to new highs; bullish +1.
- **Falling Three Methods** (`CDLRISEFALL3METHODS`) — the bearish mirror: a long black candle, three small bars within its range, then a black breakdown to new lows; bearish -1.

Counter 274 → 279 (mod-count == lib counted block; FAMILIES total 269 → 274).

Stacked on #138 (part 6 of 9); base retargets to `main` as the chain merges.

bindings/node/src/lib.rs

@@ -8799,6 +8799,19 @@ node_candle_pattern!(KickingNode, wc::Kicking, "Kicking");
 node_candle_pattern!(KickingByLengthNode, wc::KickingByLength, "KickingByLength");
 node_candle_pattern!(LadderBottomNode, wc::LadderBottom, "LadderBottom");
 node_candle_pattern!(MatHoldNode, wc::MatHold, "MatHold");
+node_candle_pattern!(MatchingLowNode, wc::MatchingLow, "MatchingLow");
+node_candle_pattern!(LongLineNode, wc::LongLine, "LongLine");
+node_candle_pattern!(ShortLineNode, wc::ShortLine, "ShortLine");
+node_candle_pattern!(
+    RisingThreeMethodsNode,
+    wc::RisingThreeMethods,
+    "RisingThreeMethods"
+);
+node_candle_pattern!(
+    FallingThreeMethodsNode,
+    wc::FallingThreeMethods,
+    "FallingThreeMethods"
+);
 
 // ============================== Microstructure: Order Book ==============================
 //