money: tag interest/dividend payouts on bank sync and Revolut import (category interest|dividend, never overwrites a set category)

scripts/revolut-import.ts

@@ -15,6 +15,8 @@
 //                           category 'transfer' (e.g. Personal <-> Joint legs)
 //     --tag-matched-transfers      with --transfer-pattern: also set category 'transfer' on the
 //                           existing tracker rows those statement rows matched
+//     Interest/dividend payouts (src/lib/server/investment-income.ts) get category 'interest' /
+//     'dividend' on insert; matched existing rows get it only when their category is empty.
 //     --apply               write (needs a money-schema backup in ~/backups from the last 2 hours)
 //     --drop-start-balance  with --apply: delete the account's "Start balance" row(s), only if the
 //                           statement opens at €0 and, after the import, the only difference
@@ -38,6 +40,7 @@ import {
 	planImport,
 	rowsFromTable,
 	selectRows,
+	statementCategory,
 	statementExternalId,
 	type StatementRow,
 	type TrackerRow
@@ -293,12 +296,23 @@ try {
 					insert into money.transactions
 						(user_id, account_id, date, value_date, description, amount_cents, external_id, source, booking_status, category, raw)
 					values (${account.user_id}, ${account.id}, ${r.date}, ${r.startedDate}, ${r.description.slice(0, 500)},
-						${r.amountCents}, ${statementExternalId(r, hash)}, 'csv', 'BOOK', ${isTransfer(r) ? 'transfer' : null},
+						${r.amountCents}, ${statementExternalId(r, hash)}, 'csv', 'BOOK', ${isTransfer(r) ? 'transfer' : statementCategory(r)},
 						${q.json({ revolut: { type: r.type, product: r.product, started: r.startedDate, completed: r.completedAt, description: r.description, fee_cents: r.feeCents, currency: r.currency, balance_cents: r.balanceCents, file_line: r.line } })})
 					on conflict do nothing`;
 				inserted += res.count;
 			}
 			console.log(`Inserted ${inserted} rows into ${account.name}.`);
+			// Interest/dividend payouts that matched an existing row: tag it, unless it already
+			// has a category (hand-set categories are never overwritten).
+			let income = 0;
+			for (const d of plan.duplicates) {
+				const category = isTransfer(d.row) ? null : statementCategory(d.row);
+				if (!category) continue;
+				const res = await q`update money.transactions set category = ${category}
+					where id = ${d.match.id} and account_id = ${account.id} and category is null`;
+				income += res.count;
+			}
+			if (income) console.log(`Tagged ${income} existing interest/dividend rows.`);
 			if (transferRe && flag('--tag-matched-transfers')) {
 				const ids = plan.duplicates.filter((d) => isTransfer(d.row)).map((d) => d.match.id);
 				const tagged = ids.length