fix(team): treat stale observe refresh marker as recoverable

src/main/services/team/opencode/delivery/OpenCodePromptDeliveryLedger.ts

@@ -976,6 +976,7 @@ function isOpenCodeSessionRefreshScheduledReason(message: string | null | undefi
     normalized === 'opencode_prompt_delivery_session_refresh_scheduled' ||
     normalized === 'opencode session refresh scheduled after resolved behavior changed' ||
     normalized === 'opencode_session_refresh_scheduled_after_resolved_behavior_changed' ||
+    normalized === 'opencode_session_stale_observe_scheduled_after_accepted_prompt' ||
     normalized === 'opencode session changed; refreshing the session before retry'
   );
 }

src/main/services/team/opencode/delivery/OpenCodeRuntimeDeliveryDiagnostics.ts

@@ -61,6 +61,7 @@ function isOpenCodeRuntimeDeliverySessionRefreshScheduledDiagnostic(message: str
     normalized === 'opencode_prompt_delivery_session_refresh_scheduled' ||
     normalized === 'opencode session refresh scheduled after resolved behavior changed' ||
     normalized === 'opencode_session_refresh_scheduled_after_resolved_behavior_changed' ||
+    normalized === 'opencode_session_stale_observe_scheduled_after_accepted_prompt' ||
     normalized === 'opencode session changed; refreshing the session before retry'
   );
 }

src/main/services/team/runtime/RuntimeDiagnosticClassifier.ts

@@ -49,7 +49,8 @@ function isCleanOpenCodeSessionRefreshDiagnostic(message: string): boolean {
     refreshMarkerText === 'opencode session changed; refreshing the session before retry' ||
     refreshMarkerText === 'opencode session refresh scheduled after resolved behavior changed' ||
     refreshMarkerText === 'opencode_prompt_delivery_session_refresh_scheduled' ||
-    refreshMarkerText === 'opencode_session_refresh_scheduled_after_resolved_behavior_changed'
+    refreshMarkerText === 'opencode_session_refresh_scheduled_after_resolved_behavior_changed' ||
+    refreshMarkerText === 'opencode_session_stale_observe_scheduled_after_accepted_prompt'
   ) {
     return true;
   }

test/main/services/team/OpenCodeRuntimeDeliveryDiagnostics.test.ts

@@ -163,6 +163,25 @@ describe('OpenCodeRuntimeDeliveryDiagnostics', () => {
     );
   });
 
+  it('treats stale observe scheduled diagnostics after an accepted prompt as session refresh', () => {
+    const record = {
+      diagnostics: [
+        'OpenCode API error',
+        'OpenCode API error. opencode_session_stale_observe_scheduled_after_accepted_prompt',
+      ],
+      lastReason: 'OpenCode API error',
+      responseState: 'not_observed',
+      status: 'retry_scheduled',
+    } as Parameters<typeof selectOpenCodeRuntimeDeliveryReason>[0];
+
+    expect(selectOpenCodeRuntimeDeliveryReason(record)).toBe(
+      'OpenCode session changed; refreshing the session before retry.'
+    );
+    expect(
+      isActionRequiredOpenCodeRuntimeDeliveryReason(selectOpenCodeRuntimeDeliveryReason(record))
+    ).toBe(false);
+  });
+
   it('treats colon-terminated generic OpenCode API errors plus clean refresh evidence as session refresh', () => {
     const record = {
       diagnostics: ['OpenCode API error:', 'resolved_behavior_changed:old->new'],

test/main/services/team/RuntimeDiagnosticClassifier.test.ts

@@ -228,6 +228,16 @@ describe('RuntimeDiagnosticClassifier', () => {
       generic: true,
       actionRequired: false,
     });
+    expect(
+      classifyRuntimeDiagnostic(
+        'OpenCode API error. opencode_session_stale_observe_scheduled_after_accepted_prompt'
+      )
+    ).toMatchObject({
+      reasonCode: 'backend_error',
+      normalizedMessage: 'OpenCode session changed; refreshing the session before retry.',
+      generic: true,
+      actionRequired: false,
+    });
   });
 
   it('does not classify refresh markers with unknown extra text as clean refresh', () => {

test/main/services/team/TeamMemberRuntimeAdvisoryService.test.ts

@@ -129,7 +129,6 @@ function buildOpenCodeDeliveryRecord(
     lastReason: 'OpenCode bridge command timed out',
     diagnostics: [
       'OpenCode prompt_async accepted; response observation will continue through durable app-side ledger reconciliation.',
-      'project_behavior_changed',
       'opencode_session_stale_observe_scheduled_after_accepted_prompt',
       'OpenCode bridge command timed out',
     ],
@@ -762,9 +761,7 @@ describe('TeamMemberRuntimeAdvisoryService', () => {
       kind: 'api_error',
       reasonCode: 'backend_error',
     });
-    expect(advisory?.message).toContain(
+    expect(advisory?.message).toBe('OpenCode runtime delivery did not complete.');
-      'opencode_session_stale_observe_scheduled_after_accepted_prompt'
-    );
   });
 
   it('keeps stale OpenCode advisories visible after unrelated later delivery success', async () => {