Patch Sweep Point V1

ESC-13 item 4 — the operating condition this grid point was solved at.

Previously typed dict[str, Any], which is the wire equivalent of saying nothing: an SDK user got an untyped bag and had to learn the key set by running a sweep and reading one. ESC-13 already made the RUNTIME blob self-describing (it is built from the point rather than from a hardcoded five-key literal, so a new axis appears the day it lands); this makes the CONTRACT say so too.

extra="allow" is load-bearing, not laziness. Two families of key are generated per-sweep and cannot be enumerated in a static model:

• tilt_<group_index> — group-targeted tilt is one grid dimension per MASKED rotor group, so the key set depends on the mask.
• component_<axis>_<slots> — a component axis contributes its selected index under a name encoding the slots it spans (component_motor_0, or component_motor_0-2 when synced).

The propeller-label axes (2026-09-20) are declared below rather than left to extra: there is one key per axis whatever the mask targets, because a label axis is ONE global grid dimension — the masked groups all run the same size at a point.

Declaring those away would be worse than leaving the model untyped, because a strict model would DROP them at serialization — the same failure mode as the 2026-06-02 aggregate-drop that rotors is deliberately non-coercing to avoid. Every declared field is optional and permissively typed for the same reason: this model documents the shape, it does not police it.