docs: add Windows installer debug equivalents

docs/help/faq.md

@@ -546,6 +546,15 @@ For a hackable (git) install:
 curl -fsSL https://openclaw.ai/install.sh | bash -s -- --install-method git --verbose
 ```
 
+Windows (PowerShell) equivalent:
+
+```powershell
+# install.ps1 has no dedicated -Verbose flag yet.
+Set-PSDebug -Trace 1
+& ([scriptblock]::Create((iwr -useb https://openclaw.ai/install.ps1))) -NoOnboard
+Set-PSDebug -Trace 0
+```
+
 More options: [Installer flags](/install/installer).
 
 ### Windows install says git not found or openclaw not recognized

docs/install/installer.md

@@ -286,6 +286,14 @@ Designed for environments where you want everything under a local prefix (defaul
     & ([scriptblock]::Create((iwr -useb https://openclaw.ai/install.ps1))) -DryRun
     ```
   </Tab>
+  <Tab title="Debug trace">
+    ```powershell
+    # install.ps1 has no dedicated -Verbose flag yet.
+    Set-PSDebug -Trace 1
+    & ([scriptblock]::Create((iwr -useb https://openclaw.ai/install.ps1))) -NoOnboard
+    Set-PSDebug -Trace 0
+    ```
+  </Tab>
 </Tabs>
 
 <AccordionGroup>
@@ -379,6 +387,18 @@ Use non-interactive flags/env vars for predictable runs.
     Run `npm config get prefix`, append `\bin`, add that directory to user PATH, then reopen PowerShell.
   </Accordion>
 
+  <Accordion title="Windows: how to get verbose installer output">
+    `install.ps1` does not currently expose a `-Verbose` switch.
+    Use PowerShell tracing for script-level diagnostics:
+
+    ```powershell
+    Set-PSDebug -Trace 1
+    & ([scriptblock]::Create((iwr -useb https://openclaw.ai/install.ps1))) -NoOnboard
+    Set-PSDebug -Trace 0
+    ```
+
+  </Accordion>
+
   <Accordion title="openclaw not found after install">
     Usually a PATH issue. See [Node.js troubleshooting](/install/node#troubleshooting).
   </Accordion>