Count patch_details_failed as CLI transport evidence

A scan whose per-package detail fetch exhausts the CLI's 429/503
retry still exits zero and reports the failure as a
patch_details_failed warning carrying the rate-limit or 5xx text.
The zero-exit classifier only inspected api_batch_failed warnings,
so a case failing solely on that warning was never retried.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014tWUsNuPcS5ByUDhzx9xh8

Author: claude

scripts/backtest-poetry.py

@@ -185,7 +185,7 @@ def diagnostic(value):
                 found = transport_diagnostic(json.dumps(value["error"]))
                 if found:
                     return found
-            if (value.get("errorCode") or value.get("code") == "api_batch_failed"
+            if (value.get("errorCode") or value.get("code") in ("api_batch_failed", "patch_details_failed")
                     or value.get("action") in ("failed", "skipped")):
                 found = transport_diagnostic(json.dumps(value))
                 if found:

scripts/tests/test_poetry_retry.py

@@ -208,6 +208,7 @@ def test_successful_installer_retry_warnings_are_not_terminal(self):
     def test_zero_exit_cli_errors_are_structured_and_terminal(self):
         for envelope in ({"error": {"message": TRANSPORT}},
                          {"warnings": [{"code": "api_batch_failed", "detail": TRANSPORT}]},
+                         {"warnings": [{"code": "patch_details_failed", "detail": "could not fetch details for pkg:pypi/urllib3@1.26.18: Rate limit exceeded (HTTP 429, gave up after 3 retries). Please try again later."}]},
                          {"vendor": {"events": [{"action": "skipped", "errorCode": "download_failed", "reason": TRANSPORT}]}}):
             with self.subTest(envelope=envelope):
                 self.assertTrue(poetry.operation_transport_failure(operation(rc=0, out=json.dumps(envelope), err="")))