fix(workbench): stop projection resume after terminal trace (#2018)

internal/cloud/server-code-agent-http.ts

@@ -1376,7 +1376,8 @@ async function runAgentRunProjectionResumePass({ options = {}, traceStore = defa
     try {
       const result = await resumeAgentRunProjectionCandidate({ candidate, options, traceStore });
       resumed += 1;
-      if (agentRunProjectionObservedTerminal(result, result?.runnerTrace ?? traceStore?.snapshot?.(candidate.traceId))) {
+      const currentTraceSnapshot = safeTraceStoreSnapshot(traceStore, candidate.traceId);
+      if (agentRunProjectionObservedTerminal(result, result?.runnerTrace ?? currentTraceSnapshot) || traceSnapshotIsTerminal(currentTraceSnapshot)) {
         terminal += 1;
         candidateRetryState.delete(retryKey);
       } else {
@@ -1653,6 +1654,7 @@ function projectionResumeCandidateRetryDelayMs(retryAttempt, initialDelayMs, max
 function appendProjectionResumeError(traceStore, candidate, error, retry = {}) {
   const traceId = safeTraceId(candidate?.traceId);
   if (!traceId) return;
+  if (traceSnapshotIsTerminal(safeTraceStoreSnapshot(traceStore, traceId))) return;
   traceStore.append(traceId, {
     type: "turn-status",
     status: "degraded",
@@ -1676,6 +1678,7 @@ function appendProjectionResumeError(traceStore, candidate, error, retry = {}) {
 function appendProjectionResumeRetry(traceStore, candidate, retry = {}) {
   const traceId = safeTraceId(candidate?.traceId);
   if (!traceId) return;
+  if (traceSnapshotIsTerminal(safeTraceStoreSnapshot(traceStore, traceId))) return;
   traceStore.append(traceId, {
     type: "turn-status",
     status: "degraded",
@@ -1697,6 +1700,23 @@ function appendProjectionResumeRetry(traceStore, candidate, retry = {}) {
   });
 }
 
+function safeTraceStoreSnapshot(traceStore, traceId) {
+  try {
+    return typeof traceStore?.snapshot === "function" ? traceStore.snapshot(traceId) : null;
+  } catch {
+    return null;
+  }
+}
+
+function traceSnapshotIsTerminal(snapshot) {
+  if (!snapshot || typeof snapshot !== "object") return false;
+  if (snapshot.finishedAt) return true;
+  if (isTraceCommandTerminalStatus(snapshot.status)) return true;
+  if (isTraceCommandTerminalStatus(snapshot.lastEvent?.status) || snapshot.lastEvent?.terminal === true) return true;
+  const events = Array.isArray(snapshot.events) ? snapshot.events : [];
+  return events.some((event) => event?.terminal === true || isTraceCommandTerminalStatus(event?.status));
+}
+
 function logAgentRunProjectionResume(logger, payload) {
   try {
     const line = JSON.stringify(payload);