feat: make Kafka projector the Workbench realtime authority

internal/cloud/code-agent-agentrun-result.ts

@@ -1,5 +1,5 @@
 // SPEC: PJ2026-0104010803 Workbench唯一投影 draft-2026-06-19-p1-agentrun-incremental-cursor; draft-2026-06-20-p2-terminal-outbox-recovery; PJ2026-010205 HWLAB接入 draft-2026-06-17-r0; draft-2026-06-25-p0-session-warm-runner-contract; PJ2026-01060505 Workbench Performance draft-2026-06-17-p0.
-// Responsibility: AgentRun command-result/event mapping, terminal projection, and trace observability helpers.
+// Responsibility: AgentRun command-result/event mapping and trace observability helpers; Kafka owns persistence.
 
 import { randomUUID } from "node:crypto";
 
@@ -20,25 +20,6 @@ import {
   isAgentRunManagerInternalServiceHost,
   resolveAgentRunManagerUrl
 } from "./code-agent-agentrun-runtime.ts";
-import {
-  agentRunErrorWithPolling,
-  agentRunEventCommandId,
-  agentRunMetricStatusForError,
-  agentRunPollingRetryableError,
-  agentRunPollingRootCause,
-  agentRunProjectionPollCount,
-  agentRunProjectionPollingState,
-  agentRunTerminalConsistencyGap,
-  agentRunTerminalResultRefreshSatisfied,
-  agentRunTerminalStatusFromEvents,
-  agentRunTraceCursorSeq,
-  emitAgentRunProjectionPollingSpan,
-  fetchAgentRunEventsForTrace,
-  measuredAgentRunEventsFetch,
-  measuredAgentRunResultFetch,
-  nonNegativeNumber,
-  recordAgentRunEventsProjectionMetrics
-} from "./code-agent-agentrun-projection-polling.ts";
 import {
   agentRunAlreadyTerminalCancelPayload,
   agentRunCancelBlockedPayload,
@@ -65,7 +46,6 @@ import {
   agentRunPromptMetadataFromText,
   messageAuthorityTextValue
 } from "./code-agent-agentrun-prompt.ts";
-import { agentRunResultSyncDeferred, buildAgentRunProjectionEventsFetchPlan, buildWorkbenchProjectionStateUpdate } from "./workbench-projection-cursor.ts";
 import { codeAgentOtelTraceFields, codeAgentOtelTraceContext, emitCodeAgentOtelSpan } from "./otel-trace.ts";
 
 const ADAPTER_ID = "agentrun-v01";
@@ -313,7 +293,7 @@ export function agentRunResultToCodeAgentPayload({ base, result, traceStore, tra
         status: "completed",
         label: "agentrun:result:completed",
         createdAt: terminalEventCreatedAt,
-        message: "AgentRun result is ready for HWLAB short-connection polling.",
+        message: "AgentRun result is committed to the Workbench projection event stream.",
         runId: base.agentRun.runId,
         commandId: base.agentRun.commandId,
         terminal: true,
@@ -574,6 +554,11 @@ export function appendAgentRunEventsToTrace(traceStore, traceId, events, mapping
     if (normalized) traceStore.append(traceId, normalized, agentRunTraceMeta({}, {}));
   }
 }
+function agentRunEventCommandId(event) {
+  const payload = event?.payload && typeof event.payload === "object" ? event.payload : {};
+  if (typeof event?.commandId === "string") return event.commandId;
+  return typeof payload.commandId === "string" ? payload.commandId : "";
+}
 
 export function isForeignAgentRunCommandEvent(event, mapping = {}) {
   const currentCommandId = typeof mapping.commandId === "string" ? mapping.commandId : "";