SEED MAP shared wheel rim: the table's OWN sky (planets-only, canonical signs) rings the tessellation — one frame for all six gamers — TDD

The Voronoi felt gains a stripped sky-wheel rim drawn from the ROOM's own sky
(Room.sky_chart) — identical for every gamer, updating toward the shared map —
with the tessellation sized into the wheel's freed hub. Roadmap step 21, Step
2's coordinate frame.

- Room.convened_at + Room.sky_chart (migration 0019); pick_roles stamps
  convened_at at gate-close (stamp only — no HTTP on the transition)
- epic.table_sky: lazy planets-only chart via PySwiss at the null location
  (geocentric longitudes need only the convened TIME; houses/ASC/MC need a
  birth LOCATION a virtual table lacks → omitted), cached on Room.sky_chart;
  legacy rooms key off created_at; seated-gamer gated, 502 on PySwiss down
- SkyWheel.drawRim(svg, data): pure static renderer — canonical asc=0 frame,
  signs ring + planet glyphs only, NO element ring / centre disc / houses /
  axes / aspects / tooltips; never writes the interactive wheel's singleton
  state; returns {size, cx, cy, r, hubR} so the felt sizes the map into the hub
- _seed_map_overlay.html: rim draws on open; map svg shrinks to 2×hubR +
  .voronoi-map--rimmed clip; lazy table-sky fetch on open; preload-then-repaint
  so a cold-cache open doesn't strand the zodiac glyphs; ResizeObserver on the
  col (not the self-sized map svg)
- _sky.scss: stacked centred svgs in .seed-map-col; .seed-wheel pointer-events
  none; circle clip on the rimmed map
- room_sky_json ctx in _role_select_context; rootvars: --sixUser/--octUser
  nudged within the Trs ramp (parallel palette tune)
- drawRim Jasmine suite (R1–R6: signs+planets, strip, hub geometry, static
  placement, singleton untouched, signs-only fallback) in both spec copies;
  epic TableSkyViewTest + convened_at stamp + seed-overlay rim ITs; FT rim
  assertions (12 signs, 3 planets, no stripped/located layers, hub sizing)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/apps/epic/views.py

@@ -696,6 +696,11 @@ def _role_select_context(room, user, seat_param=None):
             if (sky_confirmed and confirmed_char.chart_data)
             else "null"
         )
+        # The table's OWN sky — the shared SEED MAP rim frame (one canonical
+        # frame for all six gamers, NOT this seat's natal chart). None until
+        # the lazy table_sky endpoint computes + caches it; the felt then
+        # fetches it on open.
+        ctx["room_sky_json"] = json.dumps(room.sky_chart) if room.sky_chart else None
         if sky_confirmed:
             # Fall back to seat.significator for Characters created before the sync was added
             ctx["my_tray_sig"] = confirmed_char.significator or _sky_seat.significator
@@ -1282,6 +1287,10 @@ def pick_roles(request, room_id):
         room = Room.objects.get(id=room_id)
         if room.gate_status == Room.OPEN and room.table_status is None:
             room.table_status = Room.ROLE_SELECT
+            # The table's convene moment — the timestamp its OWN sky is cast
+            # from (the shared SEED MAP rim). Stamp only; the chart computes
+            # LAZILY in table_sky so this transition never fires HTTP.
+            room.convened_at = timezone.now()
             room.save()
             for slot in room.gate_slots.filter(status=GateSlot.FILLED).order_by("slot_number"):
                 TableSeat.objects.create(
@@ -1823,6 +1832,47 @@ def sky_preview(request, room_id):
     return JsonResponse(data)
 
 
+@login_required
+def table_sky(request, room_id):
+    """The table's OWN sky — the shared SEED MAP rim frame ([[project-voronoi-spec]]).
+
+    Planets-only: geocentric longitudes need only the convened TIME (gate
+    close, Room.convened_at; legacy rooms key off created_at), while houses/
+    ASC/MC need a birth LOCATION a virtual table doesn't have — so PySwiss is
+    queried at the null location and only the location-independent keys
+    (planets, aspects) are kept. Computed LAZILY here on first request and
+    cached on Room.sky_chart — never at the pick_roles transition, which must
+    stay HTTP-free.
+
+    Returns {planets, aspects} 200 · 403 not seated · 502 PySwiss unreachable.
+    """
+    room = Room.objects.get(id=room_id)
+    if _canonical_user_seat(room, request.user) is None:
+        return HttpResponse(status=403)
+    if room.sky_chart:
+        return JsonResponse(room.sky_chart)
+
+    convened = room.convened_at or room.created_at
+    dt_iso = convened.astimezone(zoneinfo.ZoneInfo('UTC')).strftime('%Y-%m-%dT%H:%M:%SZ')
+    try:
+        resp = http_requests.get(
+            settings.PYSWISS_URL + '/api/chart/',
+            params={'dt': dt_iso, 'lat': '0', 'lon': '0'},
+            timeout=5,
+        )
+        resp.raise_for_status()
+    except Exception:
+        return HttpResponse(status=502)
+
+    data = resp.json()
+    room.sky_chart = {
+        'planets': data.get('planets') or {},
+        'aspects': data.get('aspects') or [],
+    }
+    room.save(update_fields=['sky_chart'])
+    return JsonResponse(room.sky_chart)
+
+
 @login_required
 def sky_save(request, room_id):
     """Create or update the draft Character for the requesting gamer's seat.