Add Phase 0: ParseTranscript tests, ListSessions tests, tool extraction coverage, parsing benchmarks. Co-Authored-By: Virgil <virgil@lethean.io>
Co-Authored-By: Virgil <virgil@lethean.io>
Session parsing, timeline generation, HTML/video rendering. Zero external dependencies (stdlib only). Module: forge.lthn.ai/core/go-session Co-Authored-By: Virgil <virgil@lethean.io>