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>

src/apps/epic/migrations/0032_astro_reference_tables.py

@@ -0,0 +1,65 @@
+# Generated by Django 6.0 on 2026-04-14 05:27
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('epic', '0031_sig_ready_sky_select'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='AspectType',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=20, unique=True)),
+                ('symbol', models.CharField(max_length=5)),
+                ('angle', models.PositiveSmallIntegerField()),
+                ('orb', models.FloatField()),
+            ],
+            options={
+                'ordering': ['angle'],
+            },
+        ),
+        migrations.CreateModel(
+            name='HouseLabel',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('number', models.PositiveSmallIntegerField(unique=True)),
+                ('name', models.CharField(max_length=30)),
+                ('keywords', models.CharField(blank=True, max_length=100)),
+            ],
+            options={
+                'ordering': ['number'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Planet',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=20, unique=True)),
+                ('symbol', models.CharField(max_length=5)),
+                ('order', models.PositiveSmallIntegerField(unique=True)),
+            ],
+            options={
+                'ordering': ['order'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Sign',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=20, unique=True)),
+                ('symbol', models.CharField(max_length=5)),
+                ('element', models.CharField(choices=[('Fire', 'Fire'), ('Earth', 'Earth'), ('Air', 'Air'), ('Water', 'Water')], max_length=5)),
+                ('modality', models.CharField(choices=[('Cardinal', 'Cardinal'), ('Fixed', 'Fixed'), ('Mutable', 'Mutable')], max_length=8)),
+                ('order', models.PositiveSmallIntegerField(unique=True)),
+                ('start_degree', models.FloatField()),
+            ],
+            options={
+                'ordering': ['order'],
+            },
+        ),
+    ]