v3.2.2 — Fix #49: single-pass diskpart eliminates persistent FAT32 format failure

Fixes #49 — FAT32 format still failing on v3.2.0 despite automount disable fix from v3.1.9.

Root cause: The v3.1.9 fix used two separate diskpart processes (Phase 1: create partition, Phase 2: format). The automount disable command only persists within a single diskpart session on some Windows 10 builds. In the ~1.5s gap between Phase 1 exiting and Phase 2 launching, Explorer re-acquired a handle on the raw partition, causing format to fail.

Fix: Merged create and format into a single diskpart script — clean → convert gpt → create partition → format fs=fat32 → assign all run in ONE diskpart session. This eliminates the inter-process window entirely.

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