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migrations/V034__imap_keyword_sync.sql

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+ALTER TABLE mail_preferences ADD COLUMN sync_imap_keywords INTEGER NOT NULL DEFAULT 0;
+ALTER TABLE tags ADD COLUMN imap_keyword TEXT NOT NULL DEFAULT '';
+UPDATE tags SET imap_keyword = 'RustBox-' || replace(id, '-', '') WHERE imap_keyword = '';
+CREATE UNIQUE INDEX IF NOT EXISTS idx_tags_imap_keyword ON tags(imap_keyword) WHERE imap_keyword <> '';