fix: pin embedded harness selection per session

src/status/status-message.ts

@@ -87,6 +87,7 @@ export type StatusArgs = {
   groupActivation?: "mention" | "always";
   resolvedThink?: ThinkLevel;
   resolvedFast?: boolean;
+  resolvedHarness?: string;
   resolvedVerbose?: VerboseLevel;
   resolvedReasoning?: ReasoningLevel;
   resolvedElevated?: ElevatedLevel;
@@ -269,6 +270,14 @@ const formatFastModeLabel = (enabled: boolean) => {
   return "Fast";
 };
 
+const formatHarnessLabel = (harnessId: string | undefined) => {
+  const normalized = normalizeOptionalLowercaseString(harnessId);
+  if (!normalized || normalized === "pi" || normalized === "auto") {
+    return null;
+  }
+  return normalized;
+};
+
 const readUsageFromSessionLog = (
   sessionId?: string,
   sessionEntry?: SessionEntry,
@@ -744,6 +753,7 @@ export function buildStatusMessage(args: StatusArgs): string {
     `Runner: ${runnerLabel}`,
     `Think: ${thinkLevel}`,
     formatFastModeLabel(fastMode),
+    formatHarnessLabel(args.resolvedHarness),
     textVerbosity ? `Text: ${textVerbosity}` : null,
     verboseLabel,
     traceLabel,

src/status/status-text.ts

@@ -6,6 +6,7 @@ import {
   resolveAgentModelFallbacksOverride,
 } from "../agents/agent-scope.js";
 import { resolveFastModeState } from "../agents/fast-mode.js";
+import { selectAgentHarness } from "../agents/harness/selection.js";
 import { resolveModelAuthLabel } from "../agents/model-auth-label.js";
 import {
   resolveInternalSessionKey,
@@ -52,6 +53,7 @@ export type BuildStatusTextParams = {
   contextTokens?: number;
   resolvedThinkLevel?: ThinkLevel;
   resolvedFastMode?: boolean;
+  resolvedHarness?: string;
   resolvedVerboseLevel: VerboseLevel;
   resolvedReasoningLevel: ReasoningLevel;
   resolvedElevatedLevel?: ElevatedLevel;
@@ -131,6 +133,30 @@ function formatSessionTaskLine(sessionKey: string): string | undefined {
   return parts.length ? `📌 Tasks: ${parts.join(" · ")}` : undefined;
 }
 
+function resolveStatusHarnessId(params: {
+  cfg: OpenClawConfig;
+  provider: string;
+  model: string;
+  agentId: string;
+  sessionKey: string;
+  sessionEntry?: SessionEntry;
+}): string | undefined {
+  try {
+    const selected = selectAgentHarness({
+      provider: params.provider,
+      modelId: params.model,
+      config: params.cfg,
+      agentId: params.agentId,
+      sessionKey: params.sessionKey,
+      agentHarnessId: params.sessionEntry?.agentHarnessId,
+    });
+    const id = normalizeOptionalLowercaseString(selected.id);
+    return id && id !== "pi" ? id : undefined;
+  } catch {
+    return undefined;
+  }
+}
+
 function formatAgentTaskCountsLine(agentId: string): string | undefined {
   const snapshot = buildTaskStatusSnapshot(listTasksForAgentIdForStatus(agentId));
   if (snapshot.totalCount === 0) {
@@ -286,6 +312,16 @@ export async function buildStatusText(params: BuildStatusTextParams): Promise<st
       agentId: statusAgentId,
       sessionEntry,
     }).enabled;
+  const effectiveHarness =
+    params.resolvedHarness ??
+    resolveStatusHarnessId({
+      cfg,
+      provider,
+      model,
+      agentId: statusAgentId,
+      sessionKey,
+      sessionEntry,
+    });
   const agentFallbacksOverride = resolveAgentModelFallbacksOverride(cfg, statusAgentId);
   const { buildStatusMessage } = await loadStatusMessageRuntime();
   const explicitThinkingDefault =
@@ -319,6 +355,7 @@ export async function buildStatusText(params: BuildStatusTextParams): Promise<st
     resolvedThink:
       resolvedThinkLevel ?? explicitThinkingDefault ?? (await resolveDefaultThinkingLevel()),
     resolvedFast: effectiveFastMode,
+    resolvedHarness: effectiveHarness,
     resolvedVerbose: resolvedVerboseLevel,
     resolvedReasoning: resolvedReasoningLevel,
     resolvedElevated: resolvedElevatedLevel,