fix: remove npm version/source file writes, infer from path instead

npm installs to global node_modules, so writing .hapi-version and
.hapi-source under /opt/hapi (or C:\hapi) is unnecessary and fails
when that directory doesn't exist yet.

- Stop writing VERSION_FILE and SOURCE_FILE in install_from_npm
- Infer "npm" source from hapi path in print_result when files absent
- Sync both install.sh and install.ps1

via [HAPI](https://hapi.run)

Co-Authored-By: HAPI <[email protected]>

scripts/install.ps1

@@ -413,9 +413,6 @@ function Install-FromNpm {
     $installedVer = ((& hapi --version 2>$null) | Select-String -Pattern '\d+\.\d+\.\d+' | ForEach-Object { $_.Matches.Value } | Select-Object -First 1)
     if (-not $installedVer) { $installedVer = "unknown" }
 
-    $installedVer | Set-Content $script:VERSION_FILE -Encoding UTF8
-    "npm" | Set-Content $script:SOURCE_FILE -Encoding UTF8
-
     Write-Ok "HAPI CLI v$installedVer 安装成功 (来源: npm, 路径: $($hapi.Source))"
     return $true
 }
@@ -855,7 +852,19 @@ function Print-Result {
     } else {
         (Get-Content $VERSION_FILE -Raw).Trim()
     }
-    $hapiSource = if (Test-Path $SOURCE_FILE) { (Get-Content $SOURCE_FILE -Raw).Trim() } else { "unknown" }
+    $hapiSource = if (Test-Path $SOURCE_FILE) {
+        (Get-Content $SOURCE_FILE -Raw).Trim()
+    } elseif ($script:INSTALLED_SOURCE) {
+        $script:INSTALLED_SOURCE
+    } else {
+        $currentHapi = (Get-Command hapi -ErrorAction SilentlyContinue).Source
+        if ($currentHapi -and $currentHapi -notlike "$script:HAPI_BIN_DIR*") {
+            $npmPrefix = (& npm config get prefix 2>$null).Trim()
+            if ($currentHapi -like "$npmPrefix*") { "npm" } else { "unknown" }
+        } else {
+            "unknown"
+        }
+    }
 
     Write-Host ""
     Write-Host "╔══════════════════════════════════════════════════════════════════╗" -ForegroundColor Green