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FilterService.readStoredRequestIds() method

Reads previously stored request IDs, tolerating a corrupted entry.

Storage can hold malformed JSON after a truncated write or a clash with another script. Analytics attribution is not worth failing the filter pipeline for, so an unreadable entry is discarded and rebuilt from scratch.

Signature:

protected readStoredRequestIds(): Record<string, string>;

Returns:

Record<string, string>

The stored request ID map, or an empty map when absent or unreadable