PICK SKY overlay: D3 natal wheel, Character model, PySwiss aspects+tz

PySwiss:
- calculate_aspects() in calc.py (conjunction/sextile/square/trine/opposition with orbs)
- /api/tz/ endpoint (timezonefinder lat/lon → IANA timezone)
- aspects included in /api/chart/ response
- timezonefinder==8.2.2 added to requirements
- 14 new unit tests (test_calc.py) + 12 new integration tests (TimezoneApiTest, aspect fields)

Main app:
- Sign, Planet, AspectType, HouseLabel reference models + seeded migrations (0032–0033)
- Character model with birth_dt/lat/lon/place, house_system, chart_data, celtic_cross,
  confirmed_at/retired_at lifecycle (migration 0034)
- natus_preview proxy view: calls PySwiss /api/chart/ + optional /api/tz/ auto-resolution,
  computes planet-in-house distinctions, returns enriched JSON
- natus_save view: find-or-create draft Character, confirmed_at on action='confirm'
- natus-wheel.js: D3 v7 SVG natal wheel (elements pie, signs, houses, planets, aspects,
  ASC/MC axes); NatusWheel.draw() / redraw() / clear()
- _natus_overlay.html: Nominatim place autocomplete (debounced 400ms), geolocation button
  with reverse-geocode city name, live chart preview (debounced 300ms), tz auto-fill,
  NVM / SAVE SKY footer; html.natus-open class toggle pattern
- _natus.scss: Gaussian backdrop+modal, two-column form|wheel layout, suggestion dropdown,
  portrait collapse at 600px, landscape sidebar z-index sink
- room.html: include overlay when table_status == SKY_SELECT

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

pyswiss/apps/charts/tests/integrated/test_views.py

@@ -1,7 +1,7 @@
 """
 Integration tests for the PySwiss chart calculation API.
 
-These tests drive the TDD implementation of GET /api/chart/.
+These tests drive the TDD implementation of GET /api/chart/ and GET /api/tz/.
 They verify the HTTP contract using Django's test client.
 
 Run:
@@ -18,6 +18,11 @@ from django.test import TestCase
 J2000 = '2000-01-01T12:00:00Z'
 LONDON = {'lat': 51.5074, 'lon': -0.1278}
 
+# Well-known coordinates with unambiguous timezone results
+NEW_YORK  = {'lat': 40.7128,  'lon': -74.0060}   # America/New_York
+TOKYO     = {'lat': 35.6762,  'lon': 139.6503}   # Asia/Tokyo
+REYKJAVIK = {'lat': 64.1355,  'lon': -21.8954}   # Atlantic/Reykjavik
+
 
 class ChartApiTest(TestCase):
     """GET /api/chart/ — calculate a natal chart from datetime + coordinates."""
@@ -124,3 +129,87 @@ class ChartApiTest(TestCase):
         """House system override is superuser-only; plain requests get 403."""
         response = self._get({'dt': J2000, **LONDON, 'house_system': 'P'})
         self.assertEqual(response.status_code, 403)
+
+    # ── aspects ───────────────────────────────────────────────────────────
+
+    def test_chart_returns_aspects_list(self):
+        data = self._get({'dt': J2000, **LONDON}).json()
+        self.assertIn('aspects', data)
+        self.assertIsInstance(data['aspects'], list)
+
+    def test_each_aspect_has_required_fields(self):
+        data = self._get({'dt': J2000, **LONDON}).json()
+        for aspect in data['aspects']:
+            with self.subTest(aspect=aspect):
+                self.assertIn('planet1', aspect)
+                self.assertIn('planet2', aspect)
+                self.assertIn('type', aspect)
+                self.assertIn('angle', aspect)
+                self.assertIn('orb', aspect)
+
+    def test_sun_saturn_trine_present_at_j2000(self):
+        """Sun ~280.37° (Capricorn) and Saturn ~40.73° (Taurus) are ~120.36° apart — Trine."""
+        data = self._get({'dt': J2000, **LONDON}).json()
+        pairs = {(a['planet1'], a['planet2'], a['type']) for a in data['aspects']}
+        self.assertIn(('Sun', 'Saturn', 'Trine'), pairs)
+
+
+class TimezoneApiTest(TestCase):
+    """GET /api/tz/ — resolve IANA timezone from lat/lon coordinates."""
+
+    def _get(self, params):
+        return self.client.get('/api/tz/', params)
+
+    # ── guards ────────────────────────────────────────────────────────────
+
+    def test_returns_400_if_lat_missing(self):
+        response = self._get({'lon': -74.0060})
+        self.assertEqual(response.status_code, 400)
+
+    def test_returns_400_if_lon_missing(self):
+        response = self._get({'lat': 40.7128})
+        self.assertEqual(response.status_code, 400)
+
+    def test_returns_400_for_invalid_lat(self):
+        response = self._get({'lat': 'abc', 'lon': -74.0060})
+        self.assertEqual(response.status_code, 400)
+
+    def test_returns_400_for_out_of_range_lat(self):
+        response = self._get({'lat': 999, 'lon': -74.0060})
+        self.assertEqual(response.status_code, 400)
+
+    def test_returns_400_for_out_of_range_lon(self):
+        response = self._get({'lat': 40.7128, 'lon': 999})
+        self.assertEqual(response.status_code, 400)
+
+    # ── response shape ────────────────────────────────────────────────────
+
+    def test_returns_200_for_valid_coords(self):
+        response = self._get(NEW_YORK)
+        self.assertEqual(response.status_code, 200)
+
+    def test_response_is_json(self):
+        response = self._get(NEW_YORK)
+        self.assertIn('application/json', response['Content-Type'])
+
+    def test_response_contains_timezone_key(self):
+        data = self._get(NEW_YORK).json()
+        self.assertIn('timezone', data)
+
+    def test_timezone_is_a_string(self):
+        data = self._get(NEW_YORK).json()
+        self.assertIsInstance(data['timezone'], str)
+
+    # ── correctness ───────────────────────────────────────────────────────
+
+    def test_new_york_timezone(self):
+        data = self._get(NEW_YORK).json()
+        self.assertEqual(data['timezone'], 'America/New_York')
+
+    def test_tokyo_timezone(self):
+        data = self._get(TOKYO).json()
+        self.assertEqual(data['timezone'], 'Asia/Tokyo')
+
+    def test_reykjavik_timezone(self):
+        data = self._get(REYKJAVIK).json()
+        self.assertEqual(data['timezone'], 'Atlantic/Reykjavik')