Jesse's ruling on TODO #117: accept the leak in Co-op; otherwise, save only at the end of the game. `/api/save` answers 403 SAVE_AFTER_FINISH to a Competitive seat while the game runs, and serves a Co-op or one-seat game at any time. The Save replay button says why and stays disabled until the end. Pinned in the HTTP suite; documented in rules.md §6.4. Also corrects the 0.8.3 changelog entry: 0.8.2's notes did name the Second Section card going into the deck; what was missing was the save check after it. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FrCWubm9GAftYCm2hWdKwK