实现 Codex 风格上下文压缩时间线交互

src/types/opencode.ts

@@ -293,6 +293,30 @@ export interface OpencodeNormalizedSessionMessage {
   partIDs: string[];
 }
 
+export type OpencodeCompactionSource = 'manual' | 'automatic';
+
+export type OpencodeCompactionStatus = 'running' | 'completed';
+
+/**
+ * A renderer-owned compaction timeline item. `id` is the immutable UI
+ * identity; native Part/event ids are correlation keys and may arrive later.
+ */
+export interface OpencodeCompactionTimelineEvent {
+  id: string;
+  sessionID: string;
+  source: OpencodeCompactionSource;
+  status: OpencodeCompactionStatus;
+  order: number;
+  anchorMessageID?: string;
+  anchorPartID?: string;
+  nativePartID?: string;
+  nativeEventID?: string;
+  runID?: string;
+  generation?: number;
+  startedAt?: number;
+  completedAt?: number;
+}
+
 export interface OpencodeSessionTranscriptState {
   sessionID: string;
   status: OpencodeSessionExecutionState;
@@ -300,6 +324,8 @@ export interface OpencodeSessionTranscriptState {
   messageOrder: string[];
   partsById: Record<string, OpencodeNormalizedSessionPart>;
   partOrderByMessageId: Record<string, string[]>;
+  compactionsById: Record<string, OpencodeCompactionTimelineEvent>;
+  compactionOrder: string[];
   lastError?: string;
   lastEventKey?: string;
   lastDeltaSignature?: string;