HardwareOS 0.1.5

HardwareOS Desktop 0.1.5. The IDE, notes, terminal, serial monitor and settings share one window. Adds a Toolchains tab that installs what a project needs, a measurement panel, crash address decoding for ESP32, RISC-V and Xtensa, and a local MCP server for other AI tools. Cancelling a build stops it completely. Signed and notarized for macOS; Windows installer included.