Add multiple network maps, graph UX improvements, and full backup import.

Support per-map contact membership with scoped graph views, relation editing on edges, layout caching, and automatic detection of full JSON backups so contacts and relations import together.

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

backend/contacts/models.py

@@ -19,6 +19,7 @@ NETWORK_CIRCLES = [
 
 INTERACTION_INTENSITY = [
     ('intense', 'Интенсивные контакты'),
+    ('periodic', 'Периодические контакты'),
     ('sparse', 'Редкие контакты'),
 ]
 
@@ -32,6 +33,50 @@ class Contact(models.Model):
     organization = models.CharField(max_length=255, blank=True, verbose_name='Организация')
     position = models.CharField(max_length=255, blank=True, verbose_name='Должность')
     notes = models.TextField(blank=True, verbose_name='Заметки')
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        ordering = ['name']
+        verbose_name = 'Контакт'
+        verbose_name_plural = 'Контакты'
+
+    def __str__(self):
+        return self.name
+
+
+class NetworkMap(models.Model):
+    """Карта сети — отдельный контекст для визуализации подмножества контактов."""
+
+    name = models.CharField(max_length=255, verbose_name='Название')
+    description = models.TextField(blank=True, verbose_name='Описание')
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        ordering = ['name']
+        verbose_name = 'Карта сети'
+        verbose_name_plural = 'Карты сети'
+
+    def __str__(self):
+        return self.name
+
+
+class NetworkMapMembership(models.Model):
+    """Участие контакта на конкретной карте сети."""
+
+    map = models.ForeignKey(
+        NetworkMap,
+        on_delete=models.CASCADE,
+        related_name='memberships',
+        verbose_name='Карта',
+    )
+    contact = models.ForeignKey(
+        Contact,
+        on_delete=models.CASCADE,
+        related_name='map_memberships',
+        verbose_name='Контакт',
+    )
     life_sphere = models.CharField(
         max_length=32,
         choices=LIFE_SPHERES,
@@ -49,10 +94,6 @@ class Contact(models.Model):
         validators=[MinValueValidator(1), MaxValueValidator(5)],
         verbose_name='Важность (1–5)',
     )
-    include_on_network_map = models.BooleanField(
-        default=False,
-        verbose_name='Показывать на карте сети',
-    )
     map_angle = models.FloatField(null=True, blank=True, verbose_name='Угол позиции на карте')
     map_radius_ratio = models.FloatField(
         null=True,
@@ -64,12 +105,12 @@ class Contact(models.Model):
     updated_at = models.DateTimeField(auto_now=True)
 
     class Meta:
-        ordering = ['name']
-        verbose_name = 'Контакт'
-        verbose_name_plural = 'Контакты'
+        unique_together = ('map', 'contact')
+        verbose_name = 'Участие на карте'
+        verbose_name_plural = 'Участия на картах'
 
     def __str__(self):
-        return self.name
+        return f'{self.contact} на {self.map}'
 
 
 RELATION_TYPES = [