v20 — Disk compatibility and better diagnostics

Fixes disk-format handling and improves evidence for Windows failures reported in #31 and #32.

• Detect VHD/VHDX content and test mounting before modifying the player or root settings.
• Harden disk copying, cleanup, and player launching. Distribution remains one self-contained blueStackRoot.cmd.
• Expand debug.cmd with read-only disk probes, native error codes, file hashes/signatures, permissions, policy events, and exact-instance ADB checks. User-directory names are masked; technical details stay visible.
• Remove the obsolete recovered/BstkRooter files and their unused legacy assembler.

Tested full rooting and cold-boot persistence on Android 11 and 13 with BlueStacks 5.22.265.1013.

If either issue persists, run the attached debug.cmd and attach its Desktop log. The original launch-denial policy has not been reproduced locally, so this release does not claim every access-denied case is resolved.