Add network map UX and theme support.

Introduce network map view/components with filtering and positioning, expand contacts/map backend fields and migrations, and add a persistent light/dark theme toggle with graph label color updates for readability.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/contacts/migrations/0002_contact_importance_contact_life_sphere_and_more.py

@@ -0,0 +1,68 @@
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contacts', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='contact',
+            name='importance',
+            field=models.PositiveSmallIntegerField(
+                default=3,
+                validators=[
+                    django.core.validators.MinValueValidator(1),
+                    django.core.validators.MaxValueValidator(5),
+                ],
+                verbose_name='Важность (1–5)',
+            ),
+        ),
+        migrations.AddField(
+            model_name='contact',
+            name='life_sphere',
+            field=models.CharField(
+                choices=[
+                    ('work', 'Работа'),
+                    ('study', 'Учёба'),
+                    ('hobby', 'Хобби'),
+                    ('family', 'Семья'),
+                    ('health', 'Здоровье'),
+                    ('other', 'Другое'),
+                ],
+                default='other',
+                max_length=32,
+                verbose_name='Сфера жизни',
+            ),
+        ),
+        migrations.AddField(
+            model_name='contact',
+            name='network_circle',
+            field=models.CharField(
+                choices=[
+                    ('support', 'Круг поддержки'),
+                    ('productivity', 'Круг продуктивности'),
+                    ('development', 'Круг развития'),
+                ],
+                default='productivity',
+                max_length=32,
+                verbose_name='Круг сети',
+            ),
+        ),
+        migrations.AddField(
+            model_name='relation',
+            name='interaction_intensity',
+            field=models.CharField(
+                choices=[
+                    ('intense', 'Интенсивные контакты'),
+                    ('sparse', 'Редкие контакты'),
+                ],
+                default='intense',
+                max_length=32,
+                verbose_name='Интенсивность общения',
+            ),
+        ),
+    ]

backend/contacts/migrations/0003_contact_include_on_network_map.py

@@ -0,0 +1,29 @@
+from django.db import migrations, models
+
+
+def set_map_true_for_existing(apps, schema_editor):
+    Contact = apps.get_model('contacts', 'Contact')
+    Contact.objects.all().update(include_on_network_map=True)
+
+
+def noop_reverse(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contacts', '0002_contact_importance_contact_life_sphere_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='contact',
+            name='include_on_network_map',
+            field=models.BooleanField(
+                default=False,
+                verbose_name='Показывать на карте сети',
+            ),
+        ),
+        migrations.RunPython(set_map_true_for_existing, noop_reverse),
+    ]

backend/contacts/migrations/0004_contact_map_default_off.py

@@ -0,0 +1,21 @@
+from django.db import migrations
+
+
+def set_map_false_for_all(apps, schema_editor):
+    Contact = apps.get_model('contacts', 'Contact')
+    Contact.objects.all().update(include_on_network_map=False)
+
+
+def noop_reverse(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contacts', '0003_contact_include_on_network_map'),
+    ]
+
+    operations = [
+        migrations.RunPython(set_map_false_for_all, noop_reverse),
+    ]

backend/contacts/migrations/0005_contact_map_angle_contact_map_radius_ratio.py

@@ -0,0 +1,27 @@
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contacts', '0004_contact_map_default_off'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='contact',
+            name='map_angle',
+            field=models.FloatField(blank=True, null=True, verbose_name='Угол позиции на карте'),
+        ),
+        migrations.AddField(
+            model_name='contact',
+            name='map_radius_ratio',
+            field=models.FloatField(
+                blank=True,
+                null=True,
+                validators=[django.core.validators.MinValueValidator(0), django.core.validators.MaxValueValidator(1)],
+                verbose_name='Радиус позиции на карте (доля)',
+            ),
+        ),
+    ]