Research: Labanotation interoperability (bounded one-way translator)

[a-baran-orhan]

Focused split of Workstream 6 from the dance UAT umbrella #91.

Treat "straightforward" and "decent fidelity" as hypotheses to validate, not assumptions.

Tasks

• Document a mapping table from a bounded subset of Labanotation concepts to Posecode grammar and IR.
• Identify information Posecode cannot preserve (weight transfer, support, direction/level nuance, path, dynamics, simultaneous events, focus, whole-body spatial relationships).
• Select a small set of legally usable scores or purpose-built fixtures with increasing complexity: static position, grounded step, turn, short phrase.
• Prototype a one-way Labanotation → Posecode conversion for the supported subset.
• Emit explicit diagnostics for lossy/unsupported constructs rather than fabricating motion.
• Compare parsed phases, contacts, root path, joint landmarks, and rendered output against the source score.
• Require review by someone who reads Labanotation before making fidelity claims.
• Record whether Labanotation is best treated as an import format, a test oracle, or design research.

Priority: P2 (research and product direction).

Non-goal: do not claim lossless conversion before a notator validates it.