sneak d8fbcb32c2 Implement persistent SQLite scan database ...

scan now synchronizes a database that survives between runs
(SFDUPES_DATABASE, default /var/lib/sfdupes/db.sqlite) instead of
emitting a stream: operands are resolved to absolute paths, unchanged
files (same size, mtime not newer than recorded) are never re-read, new
and changed files are hashed, and records under the scanned operands
that were not verified this run are deleted; records outside the
operands are untouched. All changes commit in a single transaction, and
WAL journaling with a busy timeout keeps a report run during a cron
scan safe.

report and trees read the database (no positional arguments); the
NUL-terminated stream format, its parser, and the malformed-record
handling are gone. The driver is modernc.org/sqlite (pure Go), so
builds keep cgo disabled.

2026-07-24 03:08:49 +07:00

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