Release v.0.3.0

v0.3.0: Improve camera coverage and add Small Islands cleanup

Camera setup

• Auto-compute camera FOV from the object's bounding sphere (1.2x margin)
  instead of the default 50mm lens, which clipped large objects and
  marked visible faces as hidden
• Distribute cameras evenly between the poles; odd counts place a camera
  on the equator so narrow vertical gaps (panel seams, door shuts) are seen
• Cameras per Row: default 5, range 1-13 (was 4, 2-12 even only)
• Warn when camera distance is inside the object's bounding sphere

Small Islands

• Add standalone "Small Islands" sub-panel to select/delete loose mesh
  islands whose world-space bounding-box diagonal is <= Max Island Size
• Select Only toggle: select in Edit Mode for review, or delete directly
• Run After Removal option: remove small islands automatically after
  Remove Hidden Geometry (Delete mode), after Merge by Distance
• Works in Object Mode (each selected mesh) and Edit Mode (multi-object);
  faces hidden with H are ignored