Respect Reddit rate limit delays

src/main-loop.ts

@@ -3,6 +3,7 @@ import { withRetry } from './utils/retry.js';
 import { isSkip } from './services/processor.js';
 import { reportDeliveryResult, reportInvitationCooldown } from './web/event-reporting.js';
 import { SessionBoundRuntime } from './services/session-bound-runtime.js';
+import { RedditRateLimitError } from './reddit/api.js';
 
 export interface StoppableSchedule {
   stop(): void;
@@ -395,7 +396,13 @@ export async function runMainLoop(app: AppContainer): Promise<void> {
       }
     } catch (error) {
       if (isShuttingDown && error instanceof DOMException && error.name === 'AbortError') break;
-      logger.error('Error in main loop:', error);
+      if (error instanceof RedditRateLimitError) {
+        await sleep(Math.max(ERROR_BACKOFF_MS, error.retryAfterMs + 1_000), shutdownController.signal);
+        continue;
+      }
+
+      const errorMessage = error instanceof Error ? error.message : String(error);
+      logger.error(`Error in main loop: ${errorMessage}`);
       await sleep(ERROR_BACKOFF_MS, shutdownController.signal);
     }
   }