feat: TA-Lib candlestick patterns — tasuki-gap/unique-three-river/marubozu-pair/concealing-baby-swallow (part 9 of 9) (#141)

The final batch of the TA-Lib candlestick roadmap. Adds five patterns, each a streaming `Indicator<Input = Candle, Output = f64>` emitting the family's uniform `±1.0 / 0.0` sign convention, fully wired across the Rust core, Python / Node / WASM bindings, fuzz target and reference tests.

- **Tasuki Gap** (`CDLTASUKIGAP`) — a 3-bar continuation: two same-coloured candles gap in the trend direction, then an opposite candle opens within the second body and closes back into the gap without filling it; upside +1, downside -1.
- **Unique Three River** (`CDLUNIQUE3RIVER`) — a 3-bar bullish reversal: a long black candle, a black candle probing a new low with its body inside the first, then a small white candle held below it; bullish +1.
- **Closing Marubozu** (`CDLCLOSINGMARUBOZU`) — a single long-bodied candle with no shadow on the close end; +1 (white, closes at the high) or -1 (black, closes at the low).
- **Opening Marubozu** — a single long-bodied candle with no shadow on the open end; +1 (white, opens at the low) or -1 (black, opens at the high). No direct TA-Lib equivalent — completes the pair with the closing marubozu.
- **Concealing Baby Swallow** (`CDLCONCEALBABYSWALL`) — a rare 4-bar bullish capitulation: two black marubozu, a black candle gapping down with an upper shadow into the second, then a large black candle engulfing it entirely; bullish +1.

Body and shadow thresholds follow the geometric house style (fixed fractions of the bar range) rather than TA-Lib's rolling averages.

Counter 284 → 289 (mod-count == lib counted block; FAMILIES total 279 → 284).

Stacked on #140 (`feat/cdl-gap-methods`); base retargets to `main` as the stack merges down.

crates/wickra-core/src/lib.rs

@@ -61,31 +61,31 @@ pub use indicators::{
     BollingerOutput, Breakaway, CalendarSpread, CalmarRatio, Camarilla, CamarillaPivotsOutput, Cci,
     CenterOfGravity, Cfo, ChaikinMoneyFlow, ChaikinOscillator, ChaikinVolatility, ChandeKrollStop,
     ChandeKrollStopOutput, ChandelierExit, ChandelierExitOutput, ChoppinessIndex, ClassicPivots,
-    ClassicPivotsOutput, Cmo, CoefficientOfVariation, Cointegration, CointegrationOutput,
-    ConditionalValueAtRisk, ConnorsRsi, Coppock, Counterattack, CumulativeVolumeDelta,
-    CyberneticCycle, Decycler, DecyclerOscillator, Dema, DemandIndex, DemarkPivots,
-    DemarkPivotsOutput, DepthSlope, DetrendedStdDev, Doji, DojiStar, Donchian, DonchianOutput,
-    DonchianStop, DonchianStopOutput, DoubleBollinger, DoubleBollingerOutput,
-    DownsideGapThreeMethods, Dpo, DragonflyDoji, DrawdownDuration, EaseOfMovement, EffectiveSpread,
-    EhlersStochastic, ElderImpulse, Ema, EmpiricalModeDecomposition, Engulfing, EveningDojiStar,
-    Evwma, FallingThreeMethods, Fama, FibonacciPivots, FibonacciPivotsOutput, FisherTransform,
-    Footprint, FootprintOutput, ForceIndex, FractalChaosBands, FractalChaosBandsOutput, Frama,
-    FundingBasis, FundingRate, FundingRateMean, FundingRateZScore, GainLossRatio,
-    GapSideBySideWhite, GarmanKlassVolatility, GravestoneDoji, Hammer, HangingMan, Harami,
-    HeikinAshi, HeikinAshiOutput, HiLoActivator, HighWave, Hikkake, HikkakeModified,
-    HilbertDominantCycle, HistoricalVolatility, Hma, HomingPigeon, HurstChannel,
-    HurstChannelOutput, HurstExponent, Ichimoku, IchimokuOutput, IdenticalThreeCrows, InNeck,
-    Inertia, InformationRatio, InitialBalance, InitialBalanceOutput, InstantaneousTrendline,
-    InverseFisherTransform, InvertedHammer, Jma, Kama, KellyCriterion, Keltner, KeltnerOutput,
-    Kicking, KickingByLength, Kst, KstOutput, Kurtosis, Kvo, KylesLambda, LadderBottom,
-    LaguerreRsi, LeadLagCrossCorrelation, LeadLagCrossCorrelationOutput, LinRegAngle,
+    ClassicPivotsOutput, ClosingMarubozu, Cmo, CoefficientOfVariation, Cointegration,
+    CointegrationOutput, ConcealingBabySwallow, ConditionalValueAtRisk, ConnorsRsi, Coppock,
+    Counterattack, CumulativeVolumeDelta, CyberneticCycle, Decycler, DecyclerOscillator, Dema,
+    DemandIndex, DemarkPivots, DemarkPivotsOutput, DepthSlope, DetrendedStdDev, Doji, DojiStar,
+    Donchian, DonchianOutput, DonchianStop, DonchianStopOutput, DoubleBollinger,
+    DoubleBollingerOutput, DownsideGapThreeMethods, Dpo, DragonflyDoji, DrawdownDuration,
+    EaseOfMovement, EffectiveSpread, EhlersStochastic, ElderImpulse, Ema,
+    EmpiricalModeDecomposition, Engulfing, EveningDojiStar, Evwma, FallingThreeMethods, Fama,
+    FibonacciPivots, FibonacciPivotsOutput, FisherTransform, Footprint, FootprintOutput,
+    ForceIndex, FractalChaosBands, FractalChaosBandsOutput, Frama, FundingBasis, FundingRate,
+    FundingRateMean, FundingRateZScore, GainLossRatio, GapSideBySideWhite, GarmanKlassVolatility,
+    GravestoneDoji, Hammer, HangingMan, Harami, HeikinAshi, HeikinAshiOutput, HiLoActivator,
+    HighWave, Hikkake, HikkakeModified, HilbertDominantCycle, HistoricalVolatility, Hma,
+    HomingPigeon, HurstChannel, HurstChannelOutput, HurstExponent, Ichimoku, IchimokuOutput,
+    IdenticalThreeCrows, InNeck, Inertia, InformationRatio, InitialBalance, InitialBalanceOutput,
+    InstantaneousTrendline, InverseFisherTransform, InvertedHammer, Jma, Kama, KellyCriterion,
+    Keltner, KeltnerOutput, Kicking, KickingByLength, Kst, KstOutput, Kurtosis, Kvo, KylesLambda,
+    LadderBottom, LaguerreRsi, LeadLagCrossCorrelation, LeadLagCrossCorrelationOutput, LinRegAngle,
     LinRegChannel, LinRegChannelOutput, LinRegSlope, LinearRegression, LiquidationFeatures,
     LiquidationFeaturesOutput, LongLeggedDoji, LongLine, LongShortRatio, MaEnvelope,
     MaEnvelopeOutput, MacdIndicator, MacdOutput, Mama, MamaOutput, MarketFacilitationIndex,
     Marubozu, MassIndex, MatHold, MatchingLow, MaxDrawdown, McGinleyDynamic,
     MedianAbsoluteDeviation, MedianPrice, Mfi, Microprice, Mom, MorningDojiStar,
     MorningEveningStar, Natr, Nvi, OIPriceDivergence, OIWeighted, Obv, OmegaRatio, OnNeck,
-    OpenInterestDelta, OpeningRange, OpeningRangeOutput, OrderBookImbalanceFull,
+    OpenInterestDelta, OpeningMarubozu, OpeningRange, OpeningRangeOutput, OrderBookImbalanceFull,
     OrderBookImbalanceTop1, OrderBookImbalanceTopN, PainIndex, PairSpreadZScore, PairwiseBeta,
     ParkinsonVolatility, PearsonCorrelation, PercentB, PercentageTrailingStop, Pgo,
     PiercingDarkCloud, Pmo, Ppo, ProfitFactor, Psar, Pvi, QuotedSpread, RSquared, RealizedSpread,
@@ -96,18 +96,18 @@ pub use indicators::{
     SpinningTop, StalledPattern, StandardError, StandardErrorBands, StandardErrorBandsOutput,
     StarcBands, StarcBandsOutput, Stc, StdDev, StepTrailingStop, StickSandwich, StochRsi,
     Stochastic, StochasticOutput, SuperSmoother, SuperTrend, SuperTrendOutput, TakerBuySellRatio,
-    Takuri, TdCombo, TdCountdown, TdDeMarker, TdDifferential, TdLines, TdLinesOutput, TdOpen,
-    TdPressure, TdRangeProjection, TdRangeProjectionOutput, TdRei, TdRiskLevel, TdRiskLevelOutput,
-    TdSequential, TdSequentialOutput, TdSetup, Tema, TermStructureBasis, ThreeInside,
-    ThreeLineStrike, ThreeOutside, ThreeSoldiersOrCrows, ThreeStarsInSouth, Thrusting, Tii,
-    TradeImbalance, TreynorRatio, Trima, Trix, TrueRange, Tsi, Tsv, TtmSqueeze, TtmSqueezeOutput,
-    Tweezer, TwoCrows, TypicalPrice, UlcerIndex, UltimateOscillator, UpsideGapThreeMethods,
-    UpsideGapTwoCrows, ValueArea, ValueAreaOutput, ValueAtRisk, Variance, VerticalHorizontalFilter,
-    Vidya, VoltyStop, VolumeOscillator, VolumePriceTrend, Vortex, VortexOutput, Vwap,
-    VwapStdDevBands, VwapStdDevBandsOutput, Vwma, Vzo, WaveTrend, WaveTrendOutput, WeightedClose,
-    WilliamsFractals, WilliamsFractalsOutput, WilliamsR, Wma, WoodiePivots, WoodiePivotsOutput,
-    YangZhangVolatility, YoyoExit, ZScore, ZeroLagMacd, ZeroLagMacdOutput, ZigZag, ZigZagOutput,
-    Zlema, FAMILIES, T3,
+    Takuri, TasukiGap, TdCombo, TdCountdown, TdDeMarker, TdDifferential, TdLines, TdLinesOutput,
+    TdOpen, TdPressure, TdRangeProjection, TdRangeProjectionOutput, TdRei, TdRiskLevel,
+    TdRiskLevelOutput, TdSequential, TdSequentialOutput, TdSetup, Tema, TermStructureBasis,
+    ThreeInside, ThreeLineStrike, ThreeOutside, ThreeSoldiersOrCrows, ThreeStarsInSouth, Thrusting,
+    Tii, TradeImbalance, TreynorRatio, Trima, Trix, TrueRange, Tsi, Tsv, TtmSqueeze,
+    TtmSqueezeOutput, Tweezer, TwoCrows, TypicalPrice, UlcerIndex, UltimateOscillator,
+    UniqueThreeRiver, UpsideGapThreeMethods, UpsideGapTwoCrows, ValueArea, ValueAreaOutput,
+    ValueAtRisk, Variance, VerticalHorizontalFilter, Vidya, VoltyStop, VolumeOscillator,
+    VolumePriceTrend, Vortex, VortexOutput, Vwap, VwapStdDevBands, VwapStdDevBandsOutput, Vwma,
+    Vzo, WaveTrend, WaveTrendOutput, WeightedClose, WilliamsFractals, WilliamsFractalsOutput,
+    WilliamsR, Wma, WoodiePivots, WoodiePivotsOutput, YangZhangVolatility, YoyoExit, ZScore,
+    ZeroLagMacd, ZeroLagMacdOutput, ZigZag, ZigZagOutput, Zlema, FAMILIES, T3,
 };
 // `FootprintLevel` is a row element of `FootprintOutput`, re-exported on its own
 // line so the indicator-count tooling (which scans the braced block above and