v0.13.5-pl.10

Keep waypoint tooltips inside the map container.

The runtime tooltip now picks top or bottom direction per open based on whether the marker has room above for the pre-measured tooltip height, and shifts horizontally so the left and right edges stay 0.5 rem inside the container. The arrow is removed since a horizontally shifted tooltip can no longer point at the marker.

The editor preview's sample tooltip is decoupled from the waypoint's projected position and pinned to the map host's upper-right corner — it is a style preview, not a layout preview, so clipping is solved by construction.