Detach back to grounded movement when the climbed face flattens into
walkable ground or walkable ground sits below the feet, testing an
explicit downward probe instead of isGrounded (which the standoff
correction can falsify by lifting the capsule off the surface). Top-out
now applies an upward hop so holding W carries the player over the lip
instead of dropping back onto the steep face and re-grabbing, and a
shared re-grab cooldown spans the hop to prevent detach/re-grab buzzing.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>