Semantic: Diagnostics Policy and Classification

Diagnostics Policy

Status: Reviewed (2026-03-10 review pass)

For each semantic rule, review should define:

• error vs warning
• exact source attribution
• fail-fast vs continue
• whether the line is rejected

Review note:

• policy status is reviewed; individual rule severities still need to be attached to specific semantic families over time

Classification Rule

Status: Reviewed (2026-03-10 review pass)

Use this split during review:

• Syntax requirement:
  • can the text be parsed into structured form?
• Semantic validation requirement:
  • the text parsed, but the command, value, or combination is invalid
• Execution requirement:
  • what should happen for a valid command at runtime?

Example:

• G4 F-3
  • syntax: valid
  • semantic: invalid, dwell value must be positive
  • execution: not reached