Add retry support for failed chunk downloads#1
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Previously, if any chunk failed during a parallel download, the entire download would be aborted. This change adds automatic retry logic with exponential backoff for transient failures. - Add -retries flag (default: 3) to configure max retry attempts - Implement exponential backoff between retries (1s, 2s, 4s, ...) - Retry on network errors and server errors (5xx, 408, 429) - Fail immediately on non-retryable errors (4xx client errors) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Previously, if any chunk failed during a parallel download, the entire download would be aborted. This change adds automatic retry logic with exponential backoff for transient failures.