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synthetic-unknown-version._expectations.md (synthetic)

All files in this directory are synthetic test data, not extracts from real sessions. Under V17, unknown versions use the latest built-in parser by default. Validated data is imported with compatibility markers. An unregistered version alone does not cause rejection; an unknown format still does.

Scenario and expectations

  • session_meta has cli_version="0.999.0-synthetic", absent from the verified version registry. Its shape matches verified records: session_meta has the session ID and token_usage_record has all six usage fields.
  • detect returns Supported { format_version: Some("0.999.0-synthetic"), basis: LatestFallback }. File scan status=complete, events=1. One latest_fallback diagnostic says “using latest built-in parser; version compatibility unverified”. source_files.status=active_compat; format_status JSON contains { basis: latest_fallback, found_version: 0.999.0-synthetic, compat: unverified }; usage_events.parse_basis=latest_fallback.
  • One call, syn-resp-uv-1: input=10, output=5, total=15.
  • Rescanning adds nothing: rescan_added=0.
  • parse_basis/compat distinguish this from normal parsing of a verified version; diagnostics/status also distinguish compatibility reading from a successful empty scan.