feat: 完成模拟交易闭环、App 与 A 股行情接入

统一单入口 Go 工程与前端依赖目录，增加后台供应商配置、候选审核、计划预算、成交冲正、持仓复盘和站内通知。接入策略版本、Python 回测、可配置 A 股公开行情及 zap 文件轮转日志，补充迁移、契约与验证。

internal/service/backtest.go

@@ -0,0 +1,155 @@
+package service
+
+import (
+	"context"
+	"encoding/json"
+	"git.sundynix.cn/Blizzard/Veyra/internal/apperror"
+	"git.sundynix.cn/Blizzard/Veyra/internal/model"
+	"github.com/google/uuid"
+	"go.uber.org/zap"
+	"strings"
+	"time"
+	"unicode/utf8"
+)
+
+type BacktestRepository interface {
+	Create(context.Context, model.BacktestInput, string, string) (model.BacktestRun, error)
+	List(context.Context) ([]model.BacktestRun, error)
+	Detail(context.Context, string) (model.BacktestRun, error)
+	Claim(context.Context) (model.BacktestRun, error)
+	Finish(context.Context, model.BacktestRun, json.RawMessage, string) error
+}
+type ResearchEngine interface {
+	Execute(context.Context, json.RawMessage) (json.RawMessage, error)
+}
+type BacktestService struct {
+	repo        BacktestRepository
+	engine      ResearchEngine
+	development bool
+	market      *MarketService
+}
+
+func NewBacktestService(repo BacktestRepository, engine ResearchEngine, development bool, markets ...*MarketService) *BacktestService {
+	s := &BacktestService{repo: repo, engine: engine, development: development}
+	if len(markets) > 0 {
+		s.market = markets[0]
+	}
+	return s
+}
+func (s *BacktestService) authorize(u model.User) error {
+	if u.Role != "ADMIN" || u.Status != "ACTIVE" {
+		return apperror.ErrForbidden
+	}
+	if s == nil || s.repo == nil || !s.development {
+		return apperror.ErrUnavailable
+	}
+	return nil
+}
+func (s *BacktestService) List(ctx context.Context, u model.User) ([]model.BacktestRun, error) {
+	if e := s.authorize(u); e != nil {
+		return nil, e
+	}
+	return s.repo.List(ctx)
+}
+func (s *BacktestService) Detail(ctx context.Context, u model.User, id string) (model.BacktestRun, error) {
+	if e := s.authorize(u); e != nil {
+		return model.BacktestRun{}, e
+	}
+	if _, e := uuid.Parse(id); e != nil {
+		return model.BacktestRun{}, apperror.ErrInvalidInput
+	}
+	return s.repo.Detail(ctx, id)
+}
+func (s *BacktestService) Create(ctx context.Context, u model.User, in model.BacktestInput, requestID string) (model.BacktestRun, error) {
+	in.DataOrigin = "manual"
+	in.SourceVersion = 0
+	in.DataReceivedAt = nil
+	return s.createValidated(ctx, u, in, requestID)
+}
+
+func (s *BacktestService) createValidated(ctx context.Context, u model.User, in model.BacktestInput, requestID string) (model.BacktestRun, error) {
+	if e := s.authorize(u); e != nil {
+		return model.BacktestRun{}, e
+	}
+	if _, e := uuid.Parse(in.StrategyVersionID); e != nil {
+		return model.BacktestRun{}, apperror.ErrInvalidInput
+	}
+	in.DatasetName = strings.TrimSpace(in.DatasetName)
+	cash, e := model.ParseMoney(in.InitialCash)
+	if e != nil || cash < 10000 || cash > 100000000000 || in.DatasetName == "" || utf8.RuneCountInString(in.DatasetName) > 120 || len(in.Symbol) != 6 || len(in.Bars) < 4 || len(in.Bars) > 1000 {
+		return model.BacktestRun{}, apperror.ErrInvalidInput
+	}
+	for _, r := range in.Symbol {
+		if r < '0' || r > '9' {
+			return model.BacktestRun{}, apperror.ErrInvalidInput
+		}
+	}
+	last := ""
+	for _, b := range in.Bars {
+		date, e := time.Parse("2006-01-02", b.Date)
+		if e != nil || b.Date <= last || date.After(time.Now()) {
+			return model.BacktestRun{}, apperror.ErrInvalidInput
+		}
+		last = b.Date
+		o, e1 := model.ParseMoney(b.Open)
+		h, e2 := model.ParseMoney(b.High)
+		l, e3 := model.ParseMoney(b.Low)
+		c, e4 := model.ParseMoney(b.Close)
+		if e1 != nil || e2 != nil || e3 != nil || e4 != nil || l <= 0 || h > 100000000 || l > o || l > c || h < o || h < c {
+			return model.BacktestRun{}, apperror.ErrInvalidInput
+		}
+	}
+	in.InitialCash = model.FormatMoney(cash)
+	return s.repo.Create(ctx, in, u.ID, requestID)
+}
+func (s *BacktestService) ProcessNext(ctx context.Context) (bool, error) {
+	job, e := s.repo.Claim(ctx)
+	if e == apperror.ErrNotFound {
+		return false, nil
+	}
+	if e != nil {
+		return false, e
+	}
+	result, e := s.engine.Execute(ctx, job.Input)
+	if ctx.Err() != nil {
+		return true, ctx.Err()
+	} // The lease recovers interrupted work after restart.
+	failure := ""
+	if e != nil {
+		failure = "Python 执行失败，请检查解释器安装和输入；本任务未生成研究结果。"
+		result = nil
+	}
+	return true, s.repo.Finish(ctx, job, result, failure)
+}
+func (s *BacktestService) Run(ctx context.Context, logger *zap.Logger) {
+	if s == nil || s.repo == nil || s.engine == nil || !s.development {
+		return
+	}
+	timer := time.NewTicker(2 * time.Second)
+	defer timer.Stop()
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-timer.C:
+			if _, e := s.ProcessNext(ctx); e != nil && ctx.Err() == nil {
+				logger.Error("backtest worker failed", zap.Error(e))
+			}
+		}
+	}
+}
+
+func (s *BacktestService) CreateMarket(ctx context.Context, u model.User, version, symbol, exchange, start, end, cash, requestID string) (model.BacktestRun, error) {
+	if e := s.authorize(u); e != nil {
+		return model.BacktestRun{}, e
+	}
+	if s.market == nil {
+		return model.BacktestRun{}, apperror.ErrUnavailable
+	}
+	history, e := s.market.History(ctx, u, symbol, exchange, start, end)
+	if e != nil {
+		return model.BacktestRun{}, e
+	}
+	input := model.BacktestInput{StrategyVersionID: version, Symbol: symbol, InitialCash: cash, Bars: history.Bars, DatasetName: history.Source + " 日线 · 不复权 · " + start + " 至 " + end, DataOrigin: history.Source, SourceVersion: history.SourceVersion, DataReceivedAt: &history.ReceivedAt}
+	return s.createValidated(ctx, u, input, requestID)
+}