CLI command to replay results from JSONL log files

[dcramer]

Summary

Add a CLI command that accepts one or more JSONL log files and renders the interactive UI as if Warden had just run and produced those results.

Motivation

• Debug and inspect past Warden runs without re-executing them
• Share results with teammates by passing around log files
• Useful for development and testing of output rendering changes

Approach

• New CLI command (e.g. warden replay <file.jsonl> [file2.jsonl ...])
• Parse the JSONL log files and reconstruct the result data
• Feed the results into the existing interactive CLI renderer
• Should support all the same output modes (interactive, plain, JSON) as a live run