Windows issues

[r-clements]

On Windows I hit four issues that blocked the deployment until I worked around them:

1. subprocess.run(["gcloud", ...]) fails because gcloud is gcloud.cmd and Windows CreateProcess does not honor PATHEXT for non-.exe files. Same for bq and gsutil.

2. The 💡 emoji in the "infracost not installed" message crashes on the default cp1252 console encoding.

3. The Cloud SQL verify_instance_running provisioner uses bash-only syntax (set +e, brace expansion), but Terraform's local-exec defaults to cmd.exe on Windows.

4. Project paths under OneDrive cause intermittent PermissionError during shutil.rmtree of the workspace.

[tomtranjr]

This has been resolved by #58, which fixed all four Windows issues described here:

• gcloud/bq/gsutil .cmd resolution, fixed via resolve_tool/run_tool in platform_compat.py
• Console crash on the 💡 emoji under cp1252, fixed via configure_console_encoding()
• Cloud SQL provisioner bash-only syntax under cmd.exe, fixed by setting interpreter = ["bash", "-c"] and resolving Git Bash on Windows
• OneDrive PermissionError during workspace cleanup, fixed via robust_rmtree()

This landed on main via #66. Closing.

Props to @jivanb7 for addressing these issues.