SQLite raises 'duplicate column name: <col>' when GORM tries to ADD a
column that already exists in an older schema (seen: allow_private_address,
node_id on the nodes table). This caused database initialisation to fail on
every restart after an upgrade.
The new isIgnorableDuplicateColumnErr helper skips the error only when:
1. The error message matches 'duplicate column name: <col>'
2. Migrator().HasColumn confirms the column is already present in the DB
Fresh databases and all other error types are unaffected.
MHSanaei
bd8d33980f