- Replace the square star field with a wide (width × height) field whose
aspect matches the map plate, so the fully-zoomed-out galaxy fills the
plate instead of letterboxing; recompute zone edges for equal-area thirds
under the new diagonal CDF.
- Add fitPadded() in SystemChart.js and use it in GalaxyView.js to frame
the galaxy as a true rectangle fit with a plate-pixel margin, replacing
the old world-unit padding that left stars on the plate edge.
- Rework the JumpNetwork spanning-tree heuristic to "save the stranded
first" (attach the candidate with the fewest unvisited non-barren
neighbors) and strengthen the repair pass: never attach to barren nodes,
guard swaps against cycles via inSubtree(), and add a last-resort
fallback that preserves strong connectivity.
- Update tests (galaxy.test.mjs, system-chart.test.mjs) for the field
bounds and the new fitPadded behavior; refresh README, PROJECT_NOTES,
and data comments to document the 2:1 field and platePadding knob.
