diff --git a/.env.example b/.env.example
index b1f5de9..fbacb62 100644
--- a/.env.example
+++ b/.env.example
@@ -18,7 +18,7 @@ PI_TUI_BIN=pi
 # Explicit provider/model values below override the profile defaults.
 PI_TUI_PROFILE=operator
 PI_TUI_PROVIDER=zai
-PI_TUI_MODEL=glm-5
+PI_TUI_MODEL=glm-5-turbo
 
 # Primary API key for pi
 ZAI_API_KEY=
diff --git a/src/doctor.ts b/src/doctor.ts
index 21b21e5..3af7a7d 100644
--- a/src/doctor.ts
+++ b/src/doctor.ts
@@ -67,7 +67,16 @@ async function main(): Promise<void> {
   const splitBrainIssues = collectSplitBrainIssues(splitBrain);
   const splitBrainStatus = deriveSplitBrainReadiness(splitBrain);
   const issues = [...health.issues, ...splitBrainIssues];
-  const status = splitBrainIssues.length > 0 ? 'error' : health.status;
+  const criticalSplitBrain =
+    splitBrain.skillsDb !== 'available' ||
+    splitBrain.memoryDb !== 'available' ||
+    splitBrain.skillsRuntimeLookup !== 'present';
+  const status: 'ok' | 'warn' | 'error' =
+    health.status === 'error' || criticalSplitBrain
+      ? 'error'
+      : issues.length > 0
+        ? 'warn'
+        : 'ok';
   const { snapshot } = health;
 
   console.log(`STATUS: ${status}`);
diff --git a/src/health.ts b/src/health.ts
index 7d85ba7..bc732c5 100644
--- a/src/health.ts
+++ b/src/health.ts
@@ -271,6 +271,9 @@ export function assessHealth(snapshot = readHealthSnapshot()): HealthAssessment
 
   const messageLoopAge = ageMs(snapshot.host.message_loop_heartbeat_at);
   const schedulerAge = ageMs(snapshot.host.scheduler_heartbeat_at);
+  const lastFailureAge = ageMs(snapshot.pipeline.last_reply_failed_at);
+  const lastReplySentAge = ageMs(snapshot.pipeline.last_reply_sent_at);
+  const failureStaleMs = 6 * 60 * 60 * 1000;
 
   if (!snapshot.host.process_started_at) {
     issues.push('host process has not recorded startup');
@@ -299,10 +302,17 @@ export function assessHealth(snapshot = readHealthSnapshot()): HealthAssessment
     snapshot.pipeline.last_failure_code &&
     snapshot.pipeline.last_reply_failed_at
   ) {
-    issues.push(
-      `last pipeline failure: ${snapshot.pipeline.last_failure_code} (${snapshot.pipeline.last_failure_message || 'no message'})`,
-    );
-    if (status === 'ok') status = 'warn';
+    const isStale = lastFailureAge !== null && lastFailureAge > failureStaleMs;
+    const wasFollowedBySuccess =
+      lastFailureAge !== null &&
+      lastReplySentAge !== null &&
+      lastReplySentAge < lastFailureAge;
+    if (!isStale && !wasFollowedBySuccess) {
+      issues.push(
+        `last pipeline failure: ${snapshot.pipeline.last_failure_code} (${snapshot.pipeline.last_failure_message || 'no message'})`,
+      );
+      if (status === 'ok') status = 'warn';
+    }
   }
 
   return { status, issues, snapshot };
diff --git a/src/split-brain-status.ts b/src/split-brain-status.ts
index 75abd63..29f6b1c 100644
--- a/src/split-brain-status.ts
+++ b/src/split-brain-status.ts
@@ -100,21 +100,18 @@ export async function collectSplitBrainStatus(): Promise<SplitBrainStatus> {
       });
       await client.connect();
       try {
-        const [artifactRows, documentRows, chunkRows, latestArtifact] =
-          await Promise.all([
-            client.query<{ count: string }>(
-              'SELECT count(*) FROM builtin_knowledge_artifacts',
-            ),
-            client.query<{ count: string }>(
-              'SELECT count(*) FROM builtin_knowledge_documents',
-            ),
-            client.query<{ count: string }>(
-              'SELECT count(*) FROM builtin_knowledge_chunks',
-            ),
-            client.query<{ artifact_version: string }>(
-              'SELECT artifact_version FROM builtin_knowledge_artifacts ORDER BY created_at DESC LIMIT 1',
-            ),
-          ]);
+        const artifactRows = await client.query<{ count: string }>(
+          'SELECT count(*) FROM builtin_knowledge_artifacts',
+        );
+        const documentRows = await client.query<{ count: string }>(
+          'SELECT count(*) FROM builtin_knowledge_documents',
+        );
+        const chunkRows = await client.query<{ count: string }>(
+          'SELECT count(*) FROM builtin_knowledge_chunks',
+        );
+        const latestArtifact = await client.query<{ artifact_version: string }>(
+          'SELECT artifact_version FROM builtin_knowledge_artifacts ORDER BY created_at DESC LIMIT 1',
+        );
 
         status.skillsArtifactRows = Number(artifactRows.rows[0]?.count ?? 0);
         status.skillsDocumentRows = Number(documentRows.rows[0]?.count ?? 0);
@@ -160,12 +157,15 @@ export async function collectSplitBrainStatus(): Promise<SplitBrainStatus> {
       });
       await client.connect();
       try {
-        const [memoryRows, memoryChunkRows, memoryEmbeddingRows] =
-          await Promise.all([
-            client.query<{ count: string }>('SELECT count(*) FROM memories'),
-            client.query<{ count: string }>('SELECT count(*) FROM memory_chunks'),
-            client.query<{ count: string }>('SELECT count(*) FROM memory_embeddings'),
-          ]);
+        const memoryRows = await client.query<{ count: string }>(
+          'SELECT count(*) FROM memories',
+        );
+        const memoryChunkRows = await client.query<{ count: string }>(
+          'SELECT count(*) FROM memory_chunks',
+        );
+        const memoryEmbeddingRows = await client.query<{ count: string }>(
+          'SELECT count(*) FROM memory_embeddings',
+        );
 
         status.memoryRows = Number(memoryRows.rows[0]?.count ?? 0);
         status.memoryChunkRows = Number(memoryChunkRows.rows[0]?.count ?? 0);