goldenChat base source add

backend/src/main/java/com/goldenchart/dto/AdminVerifyRequest.java

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+package com.goldenchart.dto;
+
+import lombok.Data;
+
+@Data
+public class AdminVerifyRequest {
+    private String password;
+}

backend/src/main/java/com/goldenchart/dto/BacktestAnalysisDto.java

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+package com.goldenchart.dto;
+
+import lombok.*;
+
+/**
+ * Ta4j AnalysisCriterion 계산 결과 전체를 담는 DTO
+ */
+@Data @Builder @NoArgsConstructor @AllArgsConstructor
+public class BacktestAnalysisDto {
+
+    // ── 기본 자본 ─────────────────────────────────────────────────────────────
+    double initialCapital;
+    double finalEquity;
+
+    // ── 수익성 지표 ──────────────────────────────────────────────────────────
+    /** 총 수익률 (소수, e.g. 0.152 = +15.2%) */
+    double totalReturnPct;
+    /** 총 손익 (금액) */
+    double totalProfitLoss;
+    /** 총 수익 (이익 거래 합산) */
+    double grossProfit;
+    /** 총 손실 (손실 거래 합산, 음수) */
+    double grossLoss;
+    /** 평균 거래 수익률 */
+    double avgReturnPct;
+    /** 손익비 (총이익 / |총손실|) */
+    double profitLossRatio;
+
+    // ── 거래 통계 ─────────────────────────────────────────────────────────────
+    int    numberOfPositions;
+    int    numberOfWinning;
+    int    numberOfLosing;
+    int    numberOfBreakEven;
+    /** 승률 0~1 */
+    double winRate;
+
+    // ── 리스크 지표 ───────────────────────────────────────────────────────────
+    /** 최대 낙폭 (음수, -0.15 = -15%) */
+    double maxDrawdownPct;
+    /** 최대 상승폭 */
+    double maxRunupPct;
+    /** 샤프 비율 */
+    double sharpeRatio;
+    /** 소르티노 비율 */
+    double sortinoRatio;
+    /** 칼마 비율 (총수익률 / |최대낙폭|) */
+    double calmarRatio;
+    /** Value at Risk (95%) */
+    double valueAtRisk95;
+    /** Expected Shortfall / CVaR */
+    double expectedShortfall;
+
+    // ── 벤치마크 비교 ─────────────────────────────────────────────────────────
+    /** 바이앤홀드 수익률 */
+    double buyAndHoldReturnPct;
+    /** 전략 대비 바이앤홀드 배수 (>1 이면 전략이 유리) */
+    double vsBuyAndHold;
+}

backend/src/main/java/com/goldenchart/dto/BacktestRequest.java

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+package com.goldenchart.dto;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import lombok.*;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 백테스팅 요청 DTO.
+ *
+ * <pre>
+ * {
+ *   "strategyId": 1,                         // DB 전략 ID (선택 — 없으면 dsl 직접 전송)
+ *   "buyCondition":  { ...LogicNode },        // 매수 조건 DSL
+ *   "sellCondition": { ...LogicNode },        // 매도 조건 DSL
+ *   "bars": [ {time, open, high, low, close, volume}, ... ],
+ *   "timeframe": "1D",
+ *   "indicatorParams": { "CCI": {"length":13}, ... }  // 사용자 설정 파라미터 (선택)
+ * }
+ * </pre>
+ */
+@Data @Builder @NoArgsConstructor @AllArgsConstructor
+public class BacktestRequest {
+
+    /** DB 저장 전략 ID (선택 — 설정 시 buyCondition/sellCondition 무시) */
+    private Long strategyId;
+
+    /** 매수 조건 DSL */
+    private JsonNode buyCondition;
+
+    /** 매도 조건 DSL */
+    private JsonNode sellCondition;
+
+    /** OHLCV 캔들 데이터 */
+    private List<OhlcvBar> bars;
+
+    /** 타임프레임 (1m/5m/15m/30m/1h/4h/1D/1W/1M) */
+    private String timeframe;
+
+    /**
+     * 지표 파라미터 오버라이드.
+     * key = indicatorType (e.g. "CCI"), value = {length:13, ...}
+     * 없으면 IndicatorService 기본값 사용.
+     */
+    private Map<String, Map<String, Object>> indicatorParams;
+
+    /** 백테스팅 설정 옵션 (선택 — 없으면 기본값 사용) */
+    private BacktestSettingsDto settings;
+
+    /** 종목 코드 (결과 저장용, e.g. "KRW-BTC") */
+    private String symbol;
+
+    /** 전략 이름 (결과 저장용) */
+    private String strategyName;
+
+    /** 디바이스 ID (결과 저장용) */
+    private String deviceId;
+}

backend/src/main/java/com/goldenchart/dto/BacktestResponse.java

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+package com.goldenchart.dto;
+
+import lombok.*;
+
+import java.util.List;
+
+/**
+ * 백테스팅 결과 응답 DTO.
+ *
+ * <pre>
+ * {
+ *   "signals": [
+ *     { "time": 1700000000, "type": "BUY",  "price": 42000 },
+ *     { "time": 1700200000, "type": "SELL", "price": 45000 }
+ *   ],
+ *   "stats": { "totalTrades": 8, "winRate": 0.625, ... }
+ * }
+ * </pre>
+ */
+@Data @Builder @NoArgsConstructor @AllArgsConstructor
+public class BacktestResponse {
+
+    private List<Signal> signals;
+    private Stats stats;
+    /** Ta4j AnalysisCriterion 전체 결과 */
+    private BacktestAnalysisDto analysis;
+    /** DB 저장 후 부여된 결과 ID */
+    private Long resultId;
+
+    @Data @Builder @NoArgsConstructor @AllArgsConstructor
+    public static class Signal {
+        /** Unix timestamp (초) */
+        private long   time;
+        /** BUY | SELL */
+        private String type;
+        /** 해당 봉 종가 */
+        private double price;
+        /** 진입/청산 인덱스 (0-based) */
+        private int    barIndex;
+    }
+
+    @Data @Builder @NoArgsConstructor @AllArgsConstructor
+    public static class Stats {
+        private int    totalSignals;
+        private int    buySignals;
+        private int    sellSignals;
+        /** 거래 쌍(매수→매도) 수 */
+        private int    totalTrades;
+        /** 수익 거래 수 */
+        private int    winTrades;
+        /** 승률 0~1 */
+        private double winRate;
+        /** 총 수익률 (소수, e.g. 0.15 = +15%) */
+        private double totalReturn;
+        /** 최대 낙폭 (소수, 음수, e.g. -0.12 = -12%) */
+        private double maxDrawdown;
+        /** 평균 수익률 per trade */
+        private double avgReturn;
+        /** 최종 자산 (초기 자본 × 복리 수익) */
+        private double finalEquity;
+    }
+}

backend/src/main/java/com/goldenchart/dto/BacktestSettingsDto.java

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+package com.goldenchart.dto;
+
+import lombok.*;
+
+import java.math.BigDecimal;
+
+/**
+ * 백테스팅 설정 DTO.
+ * Ta4j 의 비용 모델·손절/익절·트레일링 스탑·진입가격·재진입 등 모든 옵션을 담는다.
+ */
+@Data @Builder @NoArgsConstructor @AllArgsConstructor
+public class BacktestSettingsDto {
+
+    private Long id;
+
+    // ── 자본 설정 ──────────────────────────────────────────────────────────────
+    /** 초기 자본 (원) */
+    @Builder.Default
+    private BigDecimal initialCapital = new BigDecimal("10000000.00");
+
+    // ── 비용 모델 ──────────────────────────────────────────────────────────────
+    /** LINEAR | ZERO */
+    @Builder.Default
+    private String commissionType = "LINEAR";
+
+    /** 수수료율 (예: 0.0015 = 0.15%) */
+    @Builder.Default
+    private BigDecimal commissionRate = new BigDecimal("0.00150");
+
+    /** 슬리피지율 (예: 0.0005 = 0.05%) */
+    @Builder.Default
+    private BigDecimal slippageRate = new BigDecimal("0.00050");
+
+    // ── 진입/청산 가격 ─────────────────────────────────────────────────────────
+    /** CLOSE | NEXT_OPEN */
+    @Builder.Default
+    private String entryPriceType = "CLOSE";
+
+    /** CLOSE | NEXT_OPEN */
+    @Builder.Default
+    private String exitPriceType = "CLOSE";
+
+    // ── 포지션 방향 ────────────────────────────────────────────────────────────
+    /** LONG | SHORT | BOTH */
+    @Builder.Default
+    private String positionDirection = "LONG";
+
+    // ── 거래 규모 ──────────────────────────────────────────────────────────────
+    /** CAPITAL_PCT | FIXED_AMOUNT */
+    @Builder.Default
+    private String tradeSizeType = "CAPITAL_PCT";
+
+    /** 비율(%) 또는 고정 금액(원) */
+    @Builder.Default
+    private BigDecimal tradeSizeValue = new BigDecimal("100.0000");
+
+    // ── 손절 (StopLossRule) ───────────────────────────────────────────────────
+    @Builder.Default
+    private Boolean stopLossEnabled = false;
+
+    /** 손절 비율 (%) */
+    @Builder.Default
+    private BigDecimal stopLossPct = new BigDecimal("2.000");
+
+    // ── 익절 (StopGainRule) ───────────────────────────────────────────────────
+    @Builder.Default
+    private Boolean takeProfitEnabled = false;
+
+    /** 익절 비율 (%) */
+    @Builder.Default
+    private BigDecimal takeProfitPct = new BigDecimal("5.000");
+
+    // ── 트레일링 스탑 (TrailingStopLossRule) ─────────────────────────────────
+    @Builder.Default
+    private Boolean trailingStopEnabled = false;
+
+    /** 트레일링 스탑 비율 (%) */
+    @Builder.Default
+    private BigDecimal trailingStopPct = new BigDecimal("2.000");
+
+    // ── 재진입 제어 ────────────────────────────────────────────────────────────
+    /** 매도 후 재진입 대기 봉 수 */
+    @Builder.Default
+    private Integer reentryWaitBars = 0;
+
+    /** 최대 동시 보유 포지션 수 */
+    @Builder.Default
+    private Integer maxOpenTrades = 1;
+
+    // ── 포지션 종속성 모드 ─────────────────────────────────────────────────────
+    /** "LONG_ONLY" | "SIGNAL_ONLY" — 매도 시그널 포지션 종속성 제어 */
+    @Builder.Default
+    private String positionMode = "LONG_ONLY";
+
+    // ── 분할 청산 ──────────────────────────────────────────────────────────────
+    @Builder.Default
+    private Boolean partialExitEnabled = false;
+
+    /** 분할 청산 비율 (%) */
+    @Builder.Default
+    private BigDecimal partialExitPct = new BigDecimal("50.000");
+}

backend/src/main/java/com/goldenchart/dto/CandleBarDto.java

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+package com.goldenchart.dto;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * REST API / STOMP 용 캔들 데이터 전송 객체.
+ *
+ * REST  : GET /api/candles/history 응답 배열 요소
+ * STOMP : /sub/charts/{market}/{type} 실시간 경량 페이로드
+ *
+ * 명세서 5.1 / 5.2 포맷 준수:
+ *  - time  : Unix 초 타임스탬프
+ *  - o/h/l/c/v : OHLCV
+ *  - rsi   : RSI 값 (null 허용)
+ */
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class CandleBarDto {
+
+    /** Unix 초 타임스탬프 (캔들 시작 시간) */
+    private long time;
+
+    private double open;
+    private double high;
+    private double low;
+    private double close;
+    private double volume;
+
+    /** RSI 값. 계산 불가 구간(워밍업)에서는 null */
+    private Double rsi;
+
+    /**
+     * 실시간 전략 체크 시그널.
+     * "BUY" | "SELL" | "NONE" (null 이면 전략 체크 미설정)
+     */
+    private String signal;
+}

backend/src/main/java/com/goldenchart/dto/CreateUserRequest.java

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+package com.goldenchart.dto;
+
+import lombok.Data;
+
+@Data
+public class CreateUserRequest {
+    private String username;
+    private String password;
+    private String displayName;
+    private String role;
+    private Boolean enabled;
+}

backend/src/main/java/com/goldenchart/dto/FcmTokenDto.java

@@ -0,0 +1,10 @@
+package com.goldenchart.dto;
+
+import lombok.Data;
+
+@Data
+public class FcmTokenDto {
+    private String token;
+    private Long   userId;
+    private String deviceId;
+}

backend/src/main/java/com/goldenchart/dto/IndicatorRequest.java

@@ -0,0 +1,18 @@
+package com.goldenchart.dto;
+
+import lombok.Data;
+
+import java.util.List;
+import java.util.Map;
+
+@Data
+public class IndicatorRequest {
+    private String symbol;
+    private String timeframe;
+    /** 지표 타입 (RSI, MACD, BollingerBands ...) */
+    private String indicatorType;
+    /** 지표 파라미터 */
+    private Map<String, Object> params;
+    /** 직접 캔들 데이터 전달 (선택: 없으면 DB에서 조회) */
+    private List<OhlcvBar> bars;
+}

backend/src/main/java/com/goldenchart/dto/IndicatorResponse.java

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+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 지표 계산 결과 응답.
+ * frontend PlotData 구조와 1:1 매핑.
+ */
+@Data @Builder @NoArgsConstructor @AllArgsConstructor
+public class IndicatorResponse {
+    private String symbol;
+    private String timeframe;
+    private String indicatorType;
+    /** time 배열 (Unix 초) */
+    private List<Long> times;
+    /**
+     * plot ID → [{time, value, color?}] 배열.
+     * e.g. MACD: {"histogram":[...], "macd":[...], "signal":[...]}
+     */
+    private Map<String, List<PlotPoint>> values;
+
+    @Data @Builder @NoArgsConstructor @AllArgsConstructor
+    public static class PlotPoint {
+        private long time;
+        private Double value;
+        private String color;
+    }
+}

backend/src/main/java/com/goldenchart/dto/LiveOrderRequest.java

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+package com.goldenchart.dto;
+
+import lombok.Data;
+
+@Data
+public class LiveOrderRequest {
+    private String market;
+    /** BUY | SELL */
+    private String side;
+    /** market | limit — 현재 market 만 지원 */
+    private String orderKind;
+    /** 시장가 매수 시 KRW 금액 (미지정 시 예산 % 적용) */
+    private Double krwAmount;
+    /** 시장가 매도 시 수량 (미지정 시 전량) */
+    private Double quantity;
+    private Long   strategyId;
+}

backend/src/main/java/com/goldenchart/dto/LiveStrategyBulkRequest.java

@@ -0,0 +1,22 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+/** 관심종목 등 여러 마켓에 동일한 실시간 전략 설정을 일괄 적용 */
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class LiveStrategyBulkRequest {
+
+    /** 적용할 마켓 코드 목록 (e.g. KRW-BTC) */
+    private List<String> markets;
+
+    /** 각 마켓에 복사할 설정 (market 필드는 서버에서 markets 항목으로 덮어씀) */
+    private LiveStrategySettingsDto template;
+}

backend/src/main/java/com/goldenchart/dto/LiveStrategySettingsDto.java

@@ -0,0 +1,39 @@
+package com.goldenchart.dto;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 실시간 전략 체크 설정 DTO.
+ * PUT /api/strategy/settings  (요청/응답 공용)
+ */
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class LiveStrategySettingsDto {
+
+    /** 업비트 마켓 코드 (e.g. "KRW-BTC") */
+    private String  market;
+
+    /** 연결된 전략 ID (null = 미연결) */
+    private Long    strategyId;
+
+    /** 실시간 체크 ON/OFF (JSON 키: isLiveCheck) */
+    @JsonProperty("isLiveCheck")
+    private boolean liveCheck;
+
+    /** "CANDLE_CLOSE" | "REALTIME_TICK" */
+    private String  executionType;
+
+    /** 전략 평가 분봉: 1m, 3m, 5m, 15m, 30m, 1h, 4h, 1d */
+    @Builder.Default
+    private String  candleType = "1m";
+
+    /** 매도 시그널 포지션 종속성 모드: "LONG_ONLY" | "SIGNAL_ONLY" */
+    @Builder.Default
+    private String  positionMode = "LONG_ONLY";
+}

backend/src/main/java/com/goldenchart/dto/LiveSummaryDto.java

@@ -0,0 +1,30 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class LiveSummaryDto {
+    private boolean enabled;
+    private boolean configured;
+    private String tradingMode;
+    private double krwBalance;
+    private List<Position> positions;
+
+    @Data
+    @Builder
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class Position {
+        private String symbol;
+        private double quantity;
+        private double avgPrice;
+    }
+}

backend/src/main/java/com/goldenchart/dto/LiveTradeDto.java

@@ -0,0 +1,22 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class LiveTradeDto {
+    private Long id;
+    private String symbol;
+    private String side;
+    private String source;
+    private double price;
+    private double quantity;
+    private double grossAmount;
+    private String upbitOrderUuid;
+    private String createdAt;
+}

backend/src/main/java/com/goldenchart/dto/LoginRequest.java

@@ -0,0 +1,9 @@
+package com.goldenchart.dto;
+
+import lombok.Data;
+
+@Data
+public class LoginRequest {
+    private String username;
+    private String password;
+}

backend/src/main/java/com/goldenchart/dto/LoginResponse.java

@@ -0,0 +1,18 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class LoginResponse {
+    private Long   userId;
+    private String username;
+    private String displayName;
+    /** ADMIN | USER | GUEST */
+    private String role;
+}

backend/src/main/java/com/goldenchart/dto/MenuPermissionsResponse.java

@@ -0,0 +1,17 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.Map;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class MenuPermissionsResponse {
+    private String role;
+    private Map<String, Boolean> permissions;
+}

backend/src/main/java/com/goldenchart/dto/OhlcvBar.java

@@ -0,0 +1,21 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * OHLCV 캔들 데이터 DTO.
+ * frontend OHLCVBar 와 동일 구조.
+ */
+@Data @Builder @NoArgsConstructor @AllArgsConstructor
+public class OhlcvBar {
+    /** Unix timestamp (초) */
+    private long time;
+    private double open;
+    private double high;
+    private double low;
+    private double close;
+    private double volume;
+}

backend/src/main/java/com/goldenchart/dto/PaperOrderRequest.java

@@ -0,0 +1,18 @@
+package com.goldenchart.dto;
+
+import lombok.Data;
+
+@Data
+public class PaperOrderRequest {
+    private String  market;
+    private String  side;       // BUY | SELL
+    private String  orderKind;  // limit | market
+    private Double  price;
+    private Double  quantity;
+    /** 수량 미입력 시 매수 예산 비율 (가용현금 %) — 기본값: 설정의 paperAutoTradeBudgetPct */
+    private Double  budgetPct;
+    /** 수량 미입력 시 매수 고정 금액 (KRW) — budgetPct보다 우선 */
+    private Double  krwAmount;
+    private String  source;     // MANUAL | STRATEGY (optional)
+    private Long    strategyId;
+}

backend/src/main/java/com/goldenchart/dto/PaperPositionDto.java

@@ -0,0 +1,19 @@
+package com.goldenchart.dto;
+
+import lombok.Builder;
+import lombok.Data;
+
+@Data
+@Builder
+public class PaperPositionDto {
+    private Long    id;
+    private String  symbol;
+    private String  koreanName;
+    private Double  quantity;
+    private Double  avgPrice;
+    /** 프론트가 현재가를 넣어 평가손익 계산 시 사용 (선택) */
+    private Double  markPrice;
+    private Double  evalAmount;
+    private Double  profitLoss;
+    private Double  profitLossPct;
+}

backend/src/main/java/com/goldenchart/dto/PaperSummaryDto.java

@@ -0,0 +1,25 @@
+package com.goldenchart.dto;
+
+import lombok.Builder;
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+@Builder
+public class PaperSummaryDto {
+    private Boolean enabled;
+    private Double  initialCapital;
+    private Double  cashBalance;
+    private Double  stockEvalAmount;
+    private Double  totalAsset;
+    private Double  unrealizedPnl;
+    private Double  realizedPnl;
+    private Double  totalReturnPct;
+    private Double  feeRatePct;
+    private Double  slippagePct;
+    private Double  minOrderKrw;
+    private Boolean autoTradeEnabled;
+    private Double  autoTradeBudgetPct;
+    private List<PaperPositionDto> positions;
+}

backend/src/main/java/com/goldenchart/dto/PaperTradeDto.java

@@ -0,0 +1,22 @@
+package com.goldenchart.dto;
+
+import lombok.Builder;
+import lombok.Data;
+
+@Data
+@Builder
+public class PaperTradeDto {
+    private Long    id;
+    private String  symbol;
+    private String  side;
+    private String  orderKind;
+    private String  source;
+    private Long    strategyId;
+    private Double  price;
+    private Double  quantity;
+    private Double  grossAmount;
+    private Double  feeAmount;
+    private Double  netAmount;
+    private Double  cashAfter;
+    private String  createdAt;
+}

backend/src/main/java/com/goldenchart/dto/RolePermissionsUpdateRequest.java

@@ -0,0 +1,11 @@
+package com.goldenchart.dto;
+
+import lombok.Data;
+
+import java.util.Map;
+
+@Data
+public class RolePermissionsUpdateRequest {
+    private String role;
+    private Map<String, Boolean> permissions;
+}

backend/src/main/java/com/goldenchart/dto/StrategyDto.java

@@ -0,0 +1,29 @@
+package com.goldenchart.dto;
+
+import com.fasterxml.jackson.annotation.JsonRawValue;
+import com.fasterxml.jackson.databind.JsonNode;
+import lombok.*;
+
+import java.time.LocalDateTime;
+
+/**
+ * 투자전략 CRUD DTO.
+ * frontend StrategyDto 와 1:1 대응.
+ */
+@Data @Builder @NoArgsConstructor @AllArgsConstructor
+public class StrategyDto {
+
+    private Long   id;
+    private String name;
+    private String description;
+
+    /** 매수 조건 LogicNode 트리 (JSON 그대로 직렬화) */
+    private JsonNode buyCondition;
+
+    /** 매도 조건 LogicNode 트리 (JSON 그대로 직렬화) */
+    private JsonNode sellCondition;
+
+    private Boolean enabled;
+    private LocalDateTime createdAt;
+    private LocalDateTime updatedAt;
+}

backend/src/main/java/com/goldenchart/dto/TradeSignalDto.java

@@ -0,0 +1,28 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 매매 시그널 이력 DTO.
+ */
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class TradeSignalDto {
+    private Long   id;
+    private String market;
+    private Long   strategyId;
+    private String strategyName;
+    /** BUY | SELL */
+    private String signalType;
+    private Double price;
+    private Long   candleTime;
+    private String candleType;
+    /** CANDLE_CLOSE | REALTIME_TICK */
+    private String executionType;
+    private String createdAt;
+}

backend/src/main/java/com/goldenchart/dto/UpbitApiCredentials.java

@@ -0,0 +1,11 @@
+package com.goldenchart.dto;
+
+import lombok.Builder;
+
+@Builder
+public record UpbitApiCredentials(String accessKey, String secretKey) {
+    public boolean isComplete() {
+        return accessKey != null && !accessKey.isBlank()
+                && secretKey != null && !secretKey.isBlank();
+    }
+}

backend/src/main/java/com/goldenchart/dto/UpdateUserRequest.java

@@ -0,0 +1,11 @@
+package com.goldenchart.dto;
+
+import lombok.Data;
+
+@Data
+public class UpdateUserRequest {
+    private String password;
+    private String displayName;
+    private String role;
+    private Boolean enabled;
+}

backend/src/main/java/com/goldenchart/dto/UserDto.java

@@ -0,0 +1,19 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserDto {
+    private Long    id;
+    private String  username;
+    private String  displayName;
+    private String  role;
+    private Boolean enabled;
+    private String  createdAt;
+}