Runtime Architecture

Pipeline

The current parser runtime pipeline is:

Grammar
→ Preparation
→ Scheduler
→ Execution
→ Observation
→ Export
→ Analysis

Ownership boundaries

• Preparation owns metadata production (structural descriptors, lookahead probes, shared-prefix candidates, continuation descriptors).
• Scheduler owns deterministic orchestration only and transports prepared metadata.
• Execution owns parse decisions through ParserEngine.
• Observation owns passive runtime observation payloads.
• Export owns serialization of observations.
• Analysis owns post-runtime tooling and interpretation.

Authority model

• Metadata is descriptive only.
• Scheduler is not a metadata producer.
• Continuation metadata is not replay/resume authority.
• Parse acceptance, final diagnostics, and parse-tree outcomes remain owned by ParserEngine.