Note

Enhances map initialization to avoid skewed centering when distant nodes/markers exist and to set an appropriate starting zoom.

• Computes center from contacts and shared markers with 2σ outlier filtering and picks zoom from latitude/longitude standard deviation
• Honors highlightPosition with corresponding highlightZoom
• Defers initial move until removed markers are loaded using _hasInitializedMap/_removedMarkersLoaded
• Uses dynamic initialZoom in MapOptions; minor UI tidy-ups

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