Changes:

Out-of-Tree Builds

Build standalone Baochip apps without a local xous-core checkout.

• Auto-detects build mode from the open workspace
• Kernel files (loader.uf2, xous.uf2) downloaded from CI or sourced manually
• New app scaffolding from a starter template with local workspace patches
• xous-app-uf2 integration for UF2 conversion

Reduced Python Dependency

Several operations that previously required bao.py are now native:

• Build artifact detection is native TypeScript
• App creation uses the bundled template directly
• tools-bao is bundled with the extension

UX Improvements

• Auto-detect xous-core path when it is open in the workspace
• Auto-detect mounted BAOCHIP drive on macOS, Linux, and Windows
• Build/Flash/Monitor port wait is now cancellable
• New Set Monitor Baud command
• Status bar shows dabao as default target when none is configured
• Helpful error when trying to configure settings without a workspace open

Settings

• Settings reorganized into In-tree Builds and Out-of-tree Builds sections
• Build mode (auto / xous-core / out-of-tree) is now a configurable setting

Bug Fixes

• Fixed output channel leak on repeated builds/flashes
• Fixed monitor terminal not cleaning up when closed manually
• Fixed double error toast on subprocess failure
• Fixed shell path quoting for Linux compatibility