Private Desktop Commander — Windows x64 portable build

Extract the complete "Private Desktop Commander" folder before running it.
Keep "Private Desktop Commander.exe", "pdc-node.exe", "agent", and "manager"
together in the same folder.

Pairing credentials, local settings, and logs remain in:
%USERPROFILE%\.private-desktop-commander

This build includes the production Tauri custom-protocol feature so the UI
loads from the bundled frontend instead of requiring a local Vite dev server.
