hive-claude: recognize OAuth-refresh give-up as an auth failure

hive-claude/src/classify.rs

@@ -32,13 +32,17 @@ const RATE_LIMIT_MARKERS: [&str; 5] = [
     "Request rate limit exceeded",
 ];
 
-/// Substrings indicating the API rejected the request as unauthenticated (401)
-/// — an expired/revoked OAuth session. Sourced from claude-code's `api_retry`
-/// JSON events and its human-readable give-up line.
-const AUTH_FAIL_MARKERS: [&str; 3] = [
+/// Substrings indicating the session is unauthenticated — either the API
+/// rejected the request (401, an expired/revoked OAuth session) or the CLI
+/// gave up refreshing its local OAuth token before ever making a request.
+/// Sourced from claude-code's `api_retry` JSON events and its human-readable
+/// give-up lines (two distinct give-up messages: a rejected request, and a
+/// failed local token refresh).
+const AUTH_FAIL_MARKERS: [&str; 4] = [
     "\"error\":\"authentication_failed\"",
     "\"error_status\":401",
     "Failed to authenticate. API Error: 401",
+    "Failed to authenticate: OAuth session expired and could not be refreshed",
 ];
 
 /// Substrings indicating `--resume` could not resolve its target: no session
@@ -314,6 +318,19 @@ mod tests {
         assert!(matches!(s.soft_error(), Some(Error::PromptTooLong)));
     }
 
+    #[test]
+    fn oauth_refresh_failure_trips_auth_failed() {
+        // A local OAuth token-refresh failure never reaches an API request —
+        // no `error_status`/401 anywhere — so it needs its own marker rather
+        // than riding the request-rejected 401 text. Observed in the wild as
+        // a turn that failed with a bare non-zero exit and no recognized
+        // sentinel: the harness never transitioned to needs-login because
+        // this exact give-up line wasn't a marker yet.
+        let s = Sentinels::default();
+        s.scan_cli_line("Failed to authenticate: OAuth session expired and could not be refreshed");
+        assert!(matches!(s.soft_error(), Some(Error::AuthFailed)));
+    }
+
     #[test]
     fn rate_limit_still_only_on_error_event() {
         // A non-error control event mentioning the marker must not trip it.