sneak 3ecf73c80a Make phases scan-wide, walk operands concurrently, batch updates ...

All PATH operands belong to a single scan: every operand seeds the
shared walk worker pool, and each pass (walk, stat, hash, update)
runs exactly once over the whole scan, so pass totals, percentages,
and ETAs are scan-global. The per-operand walk/hash/update cycles and
their stderr operand announcements are gone; duplicate paths from
overlapping operands are deduplicated before stat.

The update pass now commits in batched transactions (10k changes per
batch) instead of one scan-wide transaction: the filesystem is
authoritative and the database is an eventually-consistent reflection
of it, so scan-level atomicity buys nothing, while batches keep the
WAL small and let concurrent reports observe progress.

2026-07-24 10:26:52 +07:00

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