Semantic Normalization Rules

• Normalization is deterministic.
• Raw text remains preserved.
• Ontology patterns are provisional.
• Matching is case-insensitive.
• Prefer exact substring matching first.
• If multiple concepts match, record all matches.
• If no concept matches, record the item in unresolved-semantic-matches.md.
• Semantic agreement is not proof of actual equivalence.
• Semantic normalization is a measurement aid, not theory validation.