PICK SKY: natal wheel planet tooltips + FT modernisation

- natus-wheel.js: per-planet <g> group with data-planet/sign/degree/retrograde
  attrs; mouseover/mouseout on group (pointer-events:none on child text/℞ so
  the whole apparatus triggers hover); tooltip uses .tt-title/.tt-description;
  in-sign degree via _inSignDeg() (ecliptic % 30); D3 switched from CDN to
  local d3.min.js
- _natus.scss: .nw-planet--hover glow; #id_natus_tooltip position:fixed z-200
- _natus_overlay.html: tooltip div uses .tt; local d3.min.js script tag
- T3/T4/T5 converted from Selenium execute_script to Jasmine unit tests
  (NatusWheelSpec.js) — NatusWheel was never defined in headless GeckoDriver;
  SpecRunner.html updated to load D3 + natus-wheel.js
- test_pick_sky.py: NatusWheelTooltipTest removed (replaced by Jasmine)
- test_component_cards_tarot / test_trinket_carte_blanche: equip assertions
  updated from legacy .equip-deck-btn/.equip-trinket-btn mini-tooltip pattern
  to current DON|DOFF (.btn-equip in main portal); mini-portal text assertions

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

src/apps/epic/views.py

@@ -1030,6 +1030,9 @@ def natus_preview(request, room_id):
         return HttpResponse(status=502)
 
     data = resp.json()
+    # PySwiss uses "Earth"; the wheel and SCSS use "Stone".
+    if 'elements' in data and 'Earth' in data['elements']:
+        data['elements']['Stone'] = data['elements'].pop('Earth')
     data['distinctions'] = _compute_distinctions(data['planets'], data['houses'])
     data['timezone'] = tz_str
     return JsonResponse(data)