NTU Planner Core v0.1.1

Final maintained public-core snapshot.

• Adds deterministic complete-index evaluation for courses not yet present in a dataset.
• Parses multiline NTU prerequisites without leaking metadata between courses.
• Adds scoped contributor instructions and records the curated public/private boundary.
• Preserves the existing Course data contracts.

Validation: Node 24 clean install, typecheck, 27 tests, allowlist byte comparison, and privacy scan.

Commit: caa97fc