docs: add retry guidance for Windows Defender scan delay

On Windows, the binary may not appear immediately after install due to
Defender scanning. Instruct agents to wait and retry up to 3 times.

Co-Authored-By: Eureka <agents-noreply@craft.do>

Author: 2 people

index.html

@@ -518,7 +518,7 @@ <h3 id="agent-setup">Agent setup workflow</h3>
         <strong>Wait for user confirmation</strong> — the agent pauses and asks the user to confirm the installation completed. The installer may fail silently or need user action.
       </li>
       <li>
-        <strong>Verify installation</strong> — the agent checks the binary exists at the expected path (<code>~/.local/bin/m365</code> on macOS/Linux, <code>%LOCALAPPDATA%\m365-cli\m365.exe</code> on Windows) and runs <code>m365 --help</code>.
+        <strong>Verify installation</strong> — the agent checks the binary exists at the expected path (<code>~/.local/bin/m365</code> on macOS/Linux, <code>%LOCALAPPDATA%\m365-cli\m365.exe</code> on Windows) and runs <code>m365 --help</code>. On Windows, Defender may scan the binary before it becomes available — the agent retries a few times with short delays if not found immediately.
       </li>
       <li>
         <strong>Login</strong> — the agent runs <code>m365 login</code> using the <strong>absolute path</strong> to the binary (since PATH may not be updated in the current session). The user completes Microsoft Entra ID sign-in in the browser. The agent verifies with <code>m365 status</code>.

skills/m365-cli/SKILL.md

@@ -51,6 +51,8 @@ test -f ~/.local/bin/m365 && echo "installed" || echo "not found"
 Test-Path "$env:LOCALAPPDATA\m365-cli\m365.exe"
 ```
 
+**If the binary is not found yet:** On Windows, Defender may scan the newly downloaded binary before it becomes available. Wait 5–10 seconds and check again — retry up to 3 times before reporting failure to the user.
+
 Also verify the binary is on PATH and functional:
 ```bash
 m365 --help