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feat: TA-Lib candlestick patterns — hikkake-mod/pigeon/neck-lines (part 5 of 9) (#137)

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* feat: add hikkake-modified, homing-pigeon and neck-line candlestick patterns

Five patterns, all `Input = Candle`, `Output = f64`:

- Modified Hikkake (CDLHIKKAKEMOD) — a close-confirmed Hikkake: an inside bar
  then a breakout that closes back inside the inside-bar range; bullish +1,
  bearish -1.
- Homing Pigeon (CDLHOMINGPIGEON) — two black candles, the second a small body
  inside the first, a bullish reversal; +1.
- On-Neck (CDLONNECK) — long black bar then a white bar closing at its low (the
  neckline), a bearish continuation; -1.
- In-Neck (CDLINNECK) — long black bar then a white bar closing just into its
  body, a bearish continuation; -1.
- Thrusting (CDLTHRUSTING) — long black bar then a white bar closing well into
  but below the midpoint of its body, a bearish continuation; -1.

Counter 264 -> 269 (mod-count == lib counted block; FAMILIES total 259 -> 264).

* chore: sync indicator count to 269

---------

Co-authored-by: wickra-bot <wickra-bot@users.noreply.github.com>
This commit is contained in:
kingchenc
2026-06-02 17:03:49 +02:00
committed by GitHub
co-authored by wickra-bot
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commit e4ca9c3f8f
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CHANGELOG.md
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@@ -47,6 +47,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- **Gap Side-by-Side White** — two similar white candles opening side by side after a gap, a continuation; gap up +1, gap down -1 (`CDLGAPSIDESIDEWHITE`).
- **High-Wave** — a small body with very long shadows on both sides, an extreme indecision signal; +1 detection (`CDLHIGHWAVE`).
- **Hikkake** — an inside bar followed by a failed breakout, a trap; bullish +1, bearish -1 (`CDLHIKKAKE`).
- **Modified Hikkake** — a close-confirmed Hikkake: an inside bar then a failed breakout closing back inside; bullish +1, bearish -1 (`CDLHIKKAKEMOD`).
- **Homing Pigeon** — two black candles, the second a small body inside the first, a bullish reversal; +1 (`CDLHOMINGPIGEON`).
- **On-Neck** — a long black candle then a white candle closing at its low (the neckline), a bearish continuation; -1 (`CDLONNECK`).
- **In-Neck** — a long black candle then a white candle closing just into its body, a bearish continuation; -1 (`CDLINNECK`).
- **Thrusting** — a long black candle then a white candle closing well into but below the midpoint of its body, a bearish continuation; -1 (`CDLTHRUSTING`).
- **Derivatives family — funding & open interest (part 1).** A new family of
indicators that consume a perpetual / futures tick (`DerivativesTick`,
bundling funding rate, mark / index / futures price, open interest,