fix: 暴露 turn 活性与 steer 投递语义

src/mgr/server.ts

@@ -120,7 +120,41 @@ async function route({ method, url, body, store, sourceCommit, runnerJobDefaults
     return await store.listSessions(input) as unknown as JsonValue;
   }
   const sessionMatch = path.match(/^\/api\/v1\/sessions\/([^/]+)$/u);
-  if (method === "GET" && sessionMatch) return await store.getSessionSummary(sessionMatch[1] ?? "", url.searchParams.get("readerId")) as unknown as JsonValue;
+  if (method === "GET" && sessionMatch) {
+    const summary = await store.getSessionSummary(sessionMatch[1] ?? "", url.searchParams.get("readerId"));
+    const runId = summary.activeRunId ?? summary.lastRunId;
+    if (!runId) return summary as unknown as JsonValue;
+    const commandId = summary.activeCommandId ?? summary.lastCommandId ?? undefined;
+    try {
+      const result = await buildRunResult(store, runId, commandId);
+      return {
+        ...summary,
+        liveness: result.liveness ?? null,
+        supervisor: {
+          runId: result.runId,
+          commandId: result.commandId,
+          status: result.status,
+          terminalStatus: result.terminalStatus,
+          lastSeq: result.lastSeq,
+          liveness: result.liveness ?? null,
+          recoveryActions: typeof result.liveness === "object" && result.liveness !== null && !Array.isArray(result.liveness) ? (result.liveness as JsonRecord).recoveryActions ?? [] : [],
+          ...(result.steerDelivery ? { steerDelivery: result.steerDelivery } : {}),
+          valuesPrinted: false,
+        },
+      } as unknown as JsonValue;
+    } catch (error) {
+      return {
+        ...summary,
+        liveness: {
+          phase: "unavailable",
+          active: summary.active,
+          failureKind: "infra-failed",
+          message: error instanceof Error ? error.message : String(error),
+          valuesPrinted: false,
+        },
+      } as unknown as JsonValue;
+    }
+  }
   const sessionTraceMatch = path.match(/^\/api\/v1\/sessions\/([^/]+)\/trace$/u);
   if (method === "GET" && sessionTraceMatch) {
     const input: SessionEventPageInput = { afterSeq: integerQuery(url, "afterSeq", 0), limit: integerQuery(url, "limit", 100) };