natus wheel: fix DON/DOFF reset on PRV/NXT return to DONned planet — TDD

_aspectsVisible was set to false when stepping away to a different planet,
but the guard `if (item0.name !== _aspectPlanet)` only skipped resetting it
on return — it never restored it to true. Replace the conditional with a
direct assignment: _aspectsVisible = (item0.name === _aspectPlanet).

T11g: navigating away via NXT then back via PRV restores DOFF-active state.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/apps/gameboard/static/apps/gameboard/natus-wheel.js

@@ -344,12 +344,11 @@ const NatusWheel = (() => {
   /** Lock-activate a planet by cycle index. */
   function _activatePlanet(idx) {
     _clearActive();
-    // Aspect lines persist across planet switches — cleared only by DON or DOFF.
-    // Re-opening the same planet restores _aspectsVisible so DON shows as ×.
+    // _aspectsVisible tracks whether the currently-active planet's aspects are drawn.
+    // Derive it from _aspectPlanet so navigating away and back via PRV/NXT correctly
+    // restores the DOFF state instead of resetting to DON.
     const item0 = _planetItems[idx];
-    if (item0.name !== _aspectPlanet) {
-      _aspectsVisible = false;
-    }
+    _aspectsVisible = (item0.name === _aspectPlanet);
     _activeRing = 'planets';
     _activeIdx  = idx;
     const item  = _planetItems[idx];