MY SKY: dashboard applet + full-page natal chart — TDD

- User model: sky_birth_dt/lat/lon/place/house_system/chart_data fields (lyric migration 0018)
- Applet seed: my-sky (6×6, dashboard context) via applets migration 0009
- dashboard/sky/ — full monoapplet page: natus form + D3 wheel, LS key scoped to dashboard:sky; saves to User model
- dashboard/sky/preview/ — PySwiss proxy (same logic as epic:natus_preview, no seat check)
- dashboard/sky/save/ — persists 6 sky fields to User via update_fields
- _applet-my-sky.html: tile with h2 link to /dashboard/sky/
- 2 FTs (applet→link→form, localStorage persistence) + 12 ITs — all green

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

src/apps/dashboard/views.py

@@ -1,4 +1,9 @@
+import json
 import stripe
+import zoneinfo
+from datetime import datetime
+
+import requests as http_requests
 
 from django.conf import settings
 from django.contrib import messages
@@ -236,3 +241,117 @@ def save_payment_method(request):
         brand=pm.card.brand,
     )
     return JsonResponse({"last4": pm.card.last4, "brand": pm.card.brand})
+
+
+# ── My Sky (personal natal chart) ────────────────────────────────────────────
+
+def _sky_natus_preview(request):
+    """Shared preview logic — proxies to PySwiss, no DB writes."""
+    date_str = request.GET.get('date')
+    time_str = request.GET.get('time', '12:00')
+    tz_str   = request.GET.get('tz', '').strip()
+    lat_str  = request.GET.get('lat')
+    lon_str  = request.GET.get('lon')
+
+    if not date_str or lat_str is None or lon_str is None:
+        return HttpResponse(status=400)
+
+    try:
+        lat = float(lat_str)
+        lon = float(lon_str)
+    except ValueError:
+        return HttpResponse(status=400)
+
+    if not (-90 <= lat <= 90) or not (-180 <= lon <= 180):
+        return HttpResponse(status=400)
+
+    if not tz_str:
+        try:
+            tz_resp = http_requests.get(
+                settings.PYSWISS_URL + '/api/tz/',
+                params={'lat': lat_str, 'lon': lon_str},
+                timeout=5,
+            )
+            tz_resp.raise_for_status()
+            tz_str = tz_resp.json().get('timezone') or 'UTC'
+        except Exception:
+            tz_str = 'UTC'
+
+    try:
+        tz = zoneinfo.ZoneInfo(tz_str)
+    except (zoneinfo.ZoneInfoNotFoundError, KeyError):
+        return HttpResponse(status=400)
+
+    try:
+        local_dt = datetime.strptime(f'{date_str} {time_str}', '%Y-%m-%d %H:%M')
+        local_dt = local_dt.replace(tzinfo=tz)
+        utc_dt   = local_dt.astimezone(zoneinfo.ZoneInfo('UTC'))
+        dt_iso   = utc_dt.strftime('%Y-%m-%dT%H:%M:%SZ')
+    except ValueError:
+        return HttpResponse(status=400)
+
+    try:
+        resp = http_requests.get(
+            settings.PYSWISS_URL + '/api/chart/',
+            params={'dt': dt_iso, 'lat': lat_str, 'lon': lon_str},
+            timeout=5,
+        )
+        resp.raise_for_status()
+    except Exception:
+        return HttpResponse(status=502)
+
+    from apps.epic.views import _compute_distinctions
+    data = resp.json()
+    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)
+
+
+@login_required(login_url="/")
+def sky_view(request):
+    return render(request, "apps/dashboard/sky.html", {
+        "preview_url": request.build_absolute_uri("/dashboard/sky/preview/"),
+        "save_url":    request.build_absolute_uri("/dashboard/sky/save/"),
+        "saved_sky":   request.user.sky_chart_data,
+        "saved_birth_dt":    request.user.sky_birth_dt,
+        "saved_birth_place": request.user.sky_birth_place,
+    })
+
+
+@login_required(login_url="/")
+def sky_preview(request):
+    return _sky_natus_preview(request)
+
+
+@login_required(login_url="/")
+def sky_save(request):
+    if request.method != 'POST':
+        return HttpResponse(status=405)
+
+    try:
+        body = json.loads(request.body)
+    except json.JSONDecodeError:
+        return HttpResponse(status=400)
+
+    user = request.user
+    birth_dt_str = body.get('birth_dt', '')
+    if birth_dt_str:
+        try:
+            naive = datetime.fromisoformat(birth_dt_str.replace('Z', '+00:00'))
+            user.sky_birth_dt = naive if naive.tzinfo else naive.replace(
+                tzinfo=zoneinfo.ZoneInfo('UTC')
+            )
+        except ValueError:
+            user.sky_birth_dt = None
+    user.sky_birth_lat    = body.get('birth_lat')
+    user.sky_birth_lon    = body.get('birth_lon')
+    user.sky_birth_place  = body.get('birth_place', '')
+    user.sky_house_system = body.get('house_system', 'O')
+    user.sky_chart_data   = body.get('chart_data')
+    user.save(update_fields=[
+        'sky_birth_dt', 'sky_birth_lat', 'sky_birth_lon',
+        'sky_birth_place', 'sky_house_system', 'sky_chart_data',
+    ])
+    return JsonResponse({"saved": True})