CopiaFileTrovati now copies with Parallel.ForEach (degree 6) instead of
sequentially: the bottleneck is network latency to the share, not CPU,
so overlapping copies gives a large speedup (~5x in a synthetic
benchmark with simulated SMB latency, documented in
docs/copia-raw-parallela.md).
Also adds docs/architettura.md, a full architecture overview of every
source file, the wizard's 5 phases, dialogs, persistence and standalone
scripts.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>