refactor: upgrade to Go 1.26 and modernize code idioms

- Replace `interface{}` with `any` type alias across all packages
- Use built-in `min()`/`max()` for parameter clamping
- Use `slices.SortFunc`, `slices.Min`, `slices.Max` for cleaner code
- Use `strings.Cut()` for simpler string parsing in auth middleware
- Use `errors.Is()` for proper error comparison in handlers
- Update dependencies: golang.org/x/image 0.37.0 -> 0.38.0
- Add Wire code generation guidelines to ARCHITECTURE.md
- Disable Go cache in CI build workflow

internal/middleware/auth.go

@@ -21,15 +21,13 @@ func Auth(jwtService *service.JWTService) gin.HandlerFunc {
 		}
 
 		// 提取Token
-		parts := strings.SplitN(authHeader, " ", 2)
-		if len(parts) != 2 || parts[0] != "Bearer" {
+		prefix, token, found := strings.Cut(authHeader, " ")
+		if !found || prefix != "Bearer" {
 			response.Unauthorized(c, "invalid authorization header format")
 			c.Abort()
 			return
 		}
 
-		token := parts[1]
-
 		// 验证Token
 		claims, err := jwtService.ParseToken(token)
 		if err != nil {
@@ -56,14 +54,12 @@ func OptionalAuth(jwtService *service.JWTService) gin.HandlerFunc {
 		}
 
 		// 提取Token
-		parts := strings.SplitN(authHeader, " ", 2)
-		if len(parts) != 2 || parts[0] != "Bearer" {
+		prefix, token, found := strings.Cut(authHeader, " ")
+		if !found || prefix != "Bearer" {
 			c.Next()
 			return
 		}
 
-		token := parts[1]
-
 		// 验证Token
 		claims, err := jwtService.ParseToken(token)
 		if err != nil {