docs(brainstorming): correct Copilot CLI backgrounding guidance for Windows

skills/brainstorming/visual-companion.md

@@ -83,10 +83,11 @@ scripts/start-server.sh --project-dir /path/to/project --open --foreground
 
 **Copilot CLI:**
 ```bash
-# Use --foreground and start the server via the bash tool with mode: "async"
-# so the process survives across turns. Capture the returned shellId for
-# read_bash / stop_bash if you need to interact with it later.
-scripts/start-server.sh --project-dir /path/to/project --open --foreground
+# Start it with Copilot CLI's non-blocking/background shell mechanism so the
+# server survives across turns. Keep --foreground so the harness, not the
+# script, owns backgrounding. The launcher is a .sh, so invoke it via bash
+# (on Windows, call Git Bash's bash.exe from the PowerShell tool).
+bash scripts/start-server.sh --project-dir /path/to/project --open --foreground
 ```
 
 **Other environments:** The server must keep running in the background across conversation turns. If your environment reaps detached processes, use `--foreground` and launch the command with your platform's background execution mechanism.