OpenClaude is a Claude Code fork routing to any LLM; transcripts are
Claude-Code-schema JSONL under ~/.openclaude/projects/<slug>/<uuid>.jsonl
with replay.json siblings skipped. Only usage-bearing assistant lines
become calls; sidechain lines are counted as real spend; costs are always
computed (the transcript reports none) through the shared tables.
Real local testing: sessions generated with the actual CLI against
DeepSeek (deepseek-chat), parsed end to end.
