init: 初始化 AssetX 项目仓库

包含 webapp（Next.js 用户端）、webapp-back（Go 后端）、
antdesign（管理后台）、landingpage（营销落地页）、
数据库 SQL 和配置文件。

webapp-back/lending/models.go

@@ -0,0 +1,113 @@
+package lending
+
+
+
+// UserPosition represents user's lending position (from chain)
+type UserPosition struct {
+	UserAddress        string  `json:"user_address"`
+	WalletAddress      string  `json:"wallet_address"`
+	SuppliedBalance    string  `json:"supplied_balance"`     // USDC supplied
+	SuppliedBalanceUSD float64 `json:"supplied_balance_usd"` // USD value
+	BorrowedBalance    string  `json:"borrowed_balance"`     // USDC borrowed
+	BorrowedBalanceUSD float64 `json:"borrowed_balance_usd"` // USD value
+	CollateralBalances map[string]CollateralInfo `json:"collateral_balances"` // YT-A, YT-B, YT-C
+	HealthFactor       float64 `json:"health_factor"`
+	LTV                float64 `json:"ltv"` // Loan-to-Value ratio
+	SupplyAPY          float64 `json:"supply_apy"`
+	BorrowAPY          float64 `json:"borrow_apy"`
+}
+
+// CollateralInfo represents collateral asset information
+type CollateralInfo struct {
+	TokenSymbol   string  `json:"token_symbol"`    // YT-A, YT-B, YT-C
+	Balance       string  `json:"balance"`         // Token balance
+	BalanceUSD    float64 `json:"balance_usd"`     // USD value
+	CollateralValue float64 `json:"collateral_value"` // Collateral value (with factor)
+}
+
+// LendingStats represents lending market statistics
+type LendingStats struct {
+	TotalSuppliedUSD    float64 `json:"total_supplied_usd"`
+	TotalBorrowedUSD    float64 `json:"total_borrowed_usd"`
+	TotalCollateralUSD  float64 `json:"total_collateral_usd"`
+	UtilizationRate     float64 `json:"utilization_rate"`
+	AvgSupplyAPY        float64 `json:"avg_supply_apy"`
+	AvgBorrowAPY        float64 `json:"avg_borrow_apy"`
+	TotalUsers          int     `json:"total_users"`
+	ActiveBorrowers     int     `json:"active_borrowers"`
+	TotalTVL            float64 `json:"total_tvl"`
+}
+
+// Supply request/response
+type SupplyRequest struct {
+	Amount string `json:"amount" binding:"required"`
+	TxHash string `json:"tx_hash"`
+}
+
+type SupplyResponse struct {
+	Success bool   `json:"success"`
+	Message string `json:"message"`
+	Data    *UserPosition `json:"data,omitempty"`
+}
+
+// Withdraw request/response
+type WithdrawRequest struct {
+	Amount string `json:"amount" binding:"required"`
+	TxHash string `json:"tx_hash"`
+}
+
+type WithdrawResponse struct {
+	Success bool   `json:"success"`
+	Message string `json:"message"`
+	Data    *UserPosition `json:"data,omitempty"`
+}
+
+// SupplyCollateral request/response
+type SupplyCollateralRequest struct {
+	Asset  string `json:"asset" binding:"required"` // YT-A, YT-B, YT-C
+	Amount string `json:"amount" binding:"required"`
+	TxHash string `json:"tx_hash"`
+}
+
+type SupplyCollateralResponse struct {
+	Success bool   `json:"success"`
+	Message string `json:"message"`
+	Data    *UserPosition `json:"data,omitempty"`
+}
+
+// WithdrawCollateral request/response
+type WithdrawCollateralRequest struct {
+	Asset  string `json:"asset" binding:"required"` // YT-A, YT-B, YT-C
+	Amount string `json:"amount" binding:"required"`
+	TxHash string `json:"tx_hash"`
+}
+
+type WithdrawCollateralResponse struct {
+	Success bool   `json:"success"`
+	Message string `json:"message"`
+	Data    *UserPosition `json:"data,omitempty"`
+}
+
+// Borrow request/response
+type BorrowRequest struct {
+	Amount string `json:"amount" binding:"required"`
+	TxHash string `json:"tx_hash"`
+}
+
+type BorrowResponse struct {
+	Success bool   `json:"success"`
+	Message string `json:"message"`
+	Data    *UserPosition `json:"data,omitempty"`
+}
+
+// Repay request/response
+type RepayRequest struct {
+	Amount string `json:"amount" binding:"required"`
+	TxHash string `json:"tx_hash"`
+}
+
+type RepayResponse struct {
+	Success bool   `json:"success"`
+	Message string `json:"message"`
+	Data    *UserPosition `json:"data,omitempty"`
+}