test(trail): pin plain finding output with golden tests

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peyton-alt6d ago

Agents and pipes parse the plain finding dashboard, list, show and add output. Pin it byte for byte before restyling the terminal view.

Co-Authored-By: Claude Opus 5.5 noreply@anthropic.com Claude-Session: https://claude.ai/code/session_01XJeHKftfKHD7hSi6ZxJww8 Entire-Checkpoint: 01M66WZQZXH1REES8WAV7DDMQF