Introduces a new system preference, autoMemberNumValue, which tracks
the highest auto-generated cardnumber ever issued. It is seeded from
the MAX cardnumber across both borrowers and deletedborrowers so
pre-upgrade deletions do not free numbers for re-issuance.
This preference is managed internally by Koha::Patron::fixup_cardnumber
and has no UI (no YAML entry).
Test plan:
1. Apply the atomicupdate:
perl installer/data/mysql/updatedatabase.pl
2. Verify the preference exists:
SELECT * FROM systempreferences WHERE variable = 'autoMemberNumValue';
3. Confirm the seed value matches:
SELECT GREATEST(
COALESCE((SELECT MAX(CAST(cardnumber AS SIGNED)) FROM borrowers
WHERE cardnumber REGEXP '^-?[0-9]+\$'), 0),
COALESCE((SELECT MAX(CAST(cardnumber AS SIGNED)) FROM deletedborrowers
WHERE cardnumber REGEXP '^-?[0-9]+\$'), 0)
);
4. Re-run the atomicupdate and confirm the already-exists warning.
5. Drop the syspref, re-apply the atomicupdate, confirm it seeds
correctly on fresh installs via mandatory/sysprefs.sql.
Signed-off-by: Andrew Fuerste Henry <andrew@bywatersolutions.com>
Signed-off-by: Jacob O'Mara <Jacob.omara@openfifth.co.uk>
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