Distillation

Date: Sep 15, 2026

• 🔴 (13:24) User established the session-projection rule: “A newer turn supersedes stale incomplete rows; never resume an older assistant projection.”
• 🟡 (13:23) Search found 12 matches for assistant/shell completion handling in /home/byk/Code/opencode/packages/core/src/session/message-updater.ts: current-assistant completion guard at line 33; draft.time.completed = event.data.timestamp at lines 180, 192, 211, 225, 232, and 256; tool.time.completed = event.data.timestamp at line 270; match.time.completed = event.data.timestamp at lines 359 and 382; status: "completed" at line 362; and full match.time reconstruction at line 422.
• 🟡 (13:24) /home/byk/Code/opencode/packages/core/src/session/message-updater.ts defines MemoryState as messages: SessionMessage.Message[] and an Adapter interface with getCurrentAssistant(), getAssistant(messageID), getCurrentShell(callID), updateAssistant(assistant), updateShell(shell), and appendMessage(message), all returning Effect operations.
• 🟡 (13:24) In memory(state: MemoryState), assistantIndex(messageID) uses state.messages.findLastIndex((message) => message.id === messageID), latestAssistantIndex() finds the last message whose type === "assistant", and activeShellIndex(callID) finds the last shell message with the matching callID.
• 🟡 (13:24) getCurrentAssistant() now checks only the latest assistant row: it calls latestAssistantIndex(), returns nothing when the index is negative, and otherwise returns that assistant only when assistant?.type === "assistant" and !assistant.time.completed; this prevents selecting an older incomplete assistant after a newer turn.
• 🟡 (13:24) getAssistant(messageID) independently retrieves the last message with the requested ID and returns it only if its type is "assistant".