Remove unused functions.

internal/handlers/account/messages/list.go

@@ -10,7 +10,6 @@ import (
 )
 
 func mustUserID(c *gin.Context) int64 {
-	// Pull from your auth middleware/session. Panic-unsafe alternative:
 	if v, ok := c.Get("userID"); ok {
 		if id, ok2 := v.(int64); ok2 {
 			return id
@@ -20,25 +19,6 @@ func mustUserID(c *gin.Context) int64 {
 	return 1
 }
 
-func parseIDParam(c *gin.Context, name string) (int64, error) {
-	// typical atoi wrapper
-	// (implement: strconv.ParseInt(c.Param(name), 10, 64))
-	return atoi64(c.Param(name))
-}
-
-func atoi64(s string) (int64, error) {
-	// small helper to keep imports focused
-	// replace with strconv.ParseInt in real code
-	var n int64
-	for _, ch := range []byte(s) {
-		if ch < '0' || ch > '9' {
-			return 0, &strconvNumErr{}
-		}
-		n = n*10 + int64(ch-'0')
-	}
-	return n, nil
-}
-
 type strconvNumErr struct{}
 
 func (e *strconvNumErr) Error() string { return "invalid number" }