What: The /sandbox command now provides clearer, more helpful error messages
How it works: Before attempting to enable sandboxing, Claude Code validates that your platform is supported (macOS or Linux). If you're on an unsupported platform like Windows, you'll receive an immediate, clear error message instead of cryptic dependency failures.
Details:
Platform validation happens before dependency checks
Error message clarifies "bubblewrap" instead of abbreviated "bwrap"
Explicit "only supported on macOS and Linux" message for unsupported platforms
Evidence: Modified function zv6() at line 455556 (was lv8() at line 455028 in v2.0.25)
