feat: tipos finance OHLCV, Tick, BollingerResult, DrawdownResult

Tipos de dominio financiero:
- OHLCV: vela de mercado (product)
- Tick: evento de trade individual (product)
- BollingerResult: bandas superior/media/inferior (product)
- DrawdownResult: max drawdown con indices pico-valle (product)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

types/finance/bollinger_result.go

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+package finance
+
+// BollingerResult holds the three bands of a Bollinger Bands calculation.
+type BollingerResult struct {
+	Upper  []float64
+	Middle []float64
+	Lower  []float64
+}

types/finance/bollinger_result.md

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+---
+name: bollinger_result
+lang: go
+domain: finance
+version: "1.0.0"
+algebraic: product
+definition: |
+  type BollingerResult struct {
+      Upper  []float64
+      Middle []float64
+      Lower  []float64
+  }
+description: "Resultado de Bollinger Bands con bandas superior, media e inferior."
+tags: [finance, bollinger, indicator, bands]
+uses_types: []
+file_path: "types/finance/bollinger_result.go"
+---

types/finance/drawdown_result.go

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+package finance
+
+// DrawdownResult holds the maximum drawdown value and the indices where it occurred.
+type DrawdownResult struct {
+	Value float64
+	Start int
+	End   int
+}

types/finance/drawdown_result.md

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+---
+name: drawdown_result
+lang: go
+domain: finance
+version: "1.0.0"
+algebraic: product
+definition: |
+  type DrawdownResult struct {
+      Value float64
+      Start int
+      End   int
+  }
+description: "Resultado de maximo drawdown con el valor de caida y los indices de inicio y fin."
+tags: [finance, drawdown, risk, metric]
+uses_types: []
+file_path: "types/finance/drawdown_result.go"
+---

types/finance/ohlcv.go

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+package finance
+
+// OHLCV represents a market candle with open, high, low, close prices and volume.
+type OHLCV struct {
+	Open   float64
+	High   float64
+	Low    float64
+	Close  float64
+	Volume float64
+}

types/finance/ohlcv.md

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+---
+name: ohlcv
+lang: go
+domain: finance
+version: "1.0.0"
+algebraic: product
+definition: |
+  type OHLCV struct {
+      Open   float64
+      High   float64
+      Low    float64
+      Close  float64
+      Volume float64
+  }
+description: "Vela de mercado con precios de apertura, maximo, minimo, cierre y volumen."
+tags: [finance, market, candle, ohlcv]
+uses_types: []
+file_path: "types/finance/ohlcv.go"
+---

types/finance/tick.go

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+package finance
+
+import "time"
+
+// Tick represents a single trade event in a market.
+type Tick struct {
+	Symbol    string
+	Price     float64
+	Volume    float64
+	Timestamp time.Time
+}

types/finance/tick.md

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+---
+name: tick
+lang: go
+domain: finance
+version: "1.0.0"
+algebraic: product
+definition: |
+  type Tick struct {
+      Symbol    string
+      Price     float64
+      Volume    float64
+      Timestamp time.Time
+  }
+description: "Evento de trade individual en un mercado. Contiene simbolo, precio, volumen y timestamp."
+tags: [finance, market, tick, trade]
+uses_types: []
+file_path: "types/finance/tick.go"
+---