refactor: move retry and recovery paths to structured output helpers

src/session-recovery.test.ts

@@ -44,6 +44,19 @@ describe('shouldResetSessionOnAgentFailure', () => {
       }),
     ).toBe(true);
   });
+
+  it('matches structured public output text too', () => {
+    expect(
+      shouldResetSessionOnAgentFailure({
+        result: null,
+        output: {
+          visibility: 'public',
+          text: 'API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.11.content.0: Invalid `signature` in `thinking` block"}}',
+        },
+        error: undefined,
+      }),
+    ).toBe(true);
+  });
 });
 
 describe('shouldRetryFreshSessionOnAgentFailure', () => {
@@ -75,4 +88,14 @@ describe('shouldRetryFreshSessionOnAgentFailure', () => {
       }),
     ).toBe(false);
   });
+
+  it('does not treat structured silent output as a retryable session failure', () => {
+    expect(
+      shouldRetryFreshSessionOnAgentFailure({
+        result: null,
+        output: { visibility: 'silent' },
+        error: undefined,
+      }),
+    ).toBe(false);
+  });
 });