fix: inherit install source from detected INSTALLED_SOURCE instead of always defaulting to npm

scripts/install.ps1

@@ -1039,7 +1039,15 @@ function Check-Prerequisites {
 # 快速模式：向后兼容的命令行参数
 # ─────────────────────────────────────────
 function Run-QuickMode {
-    $script:SELECTED_SOURCE = if ($Source) { $Source } else { "npm" }
+    if ($Source) {
+        $script:SELECTED_SOURCE = $Source
+    } else {
+        $script:SELECTED_SOURCE = switch ($script:INSTALLED_SOURCE) {
+            "npm" { "npm" }
+            { $_ -like "github:*" } { $_.Substring(7) }
+            default { "npm" }
+        }
+    }
 
     $script:REMOTE_VERSION = Get-RemoteVersion -source $script:SELECTED_SOURCE
 

scripts/install.sh

@@ -1413,7 +1413,13 @@ run_quick_mode() {
             github-fork|gh-fork|fork|self) SELECTED_SOURCE="github-fork" ;;
         esac
     fi
-    [[ -z "$SELECTED_SOURCE" ]] && SELECTED_SOURCE="npm"
+    if [[ -z "$SELECTED_SOURCE" ]]; then
+        case "$INSTALLED_SOURCE" in
+            npm) SELECTED_SOURCE="npm" ;;
+            github:*) SELECTED_SOURCE="${INSTALLED_SOURCE#github:}" ;;
+            *) SELECTED_SOURCE="npm" ;;
+        esac
+    fi
 
     while ! get_remote_version "$SELECTED_SOURCE"; do
         warn "无法从 $SELECTED_SOURCE 获取远程版本"
@@ -1458,8 +1464,6 @@ run_quick_mode() {
         echo ""
     done
 
-    detect_installed
-
     if [[ "$UPGRADE_ONLY" == true ]]; then
         if [[ -z "$INSTALLED_VERSION" || "$INSTALLED_VERSION" == "unknown" ]]; then
             err "未检测到已安装的 HAPI CLI，无法升级"