The circled exclamation marks on Achat and Gain use semantic amber warning color, adapted for light/dark appearance. The explanation/editor action and missing-cost condition remain unchanged; an explicit zero is still a known purchase cost.

App PR: https://github.com/snag-tcg/poc-tcg-collector/pull/960. Rendered badge checks cover both games and appearances, color and icon contrast. Existing editor, retry and pending-write checks remain. Focused missing-cost/palette suites: 168 passed. Lint/typecheck pass; 3251 tests pass, 11 skipped, only the same two pre-existing staging priceObservation date failures. Push hook bypassed for that documented baseline failure; no tests weakened. No emulator, account, collection or production change; device visual checks remain pending. Development and validation ran on the personal VPS.