feat: Introduce lists and reviews apps, refactor user list functionality from accounts, and add user profile fields.

backend/apps/lists/models.py

@@ -0,0 +1,61 @@
+from django.db import models
+from django.conf import settings
+from django.contrib.contenttypes.fields import GenericForeignKey
+from django.contrib.contenttypes.models import ContentType
+from apps.core.history import TrackedModel
+from apps.core.choices import RichChoiceField
+import pghistory
+
+@pghistory.track()
+class UserList(TrackedModel):
+    user = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.CASCADE,
+        related_name="user_lists",
+        help_text="User who created this list",
+    )
+    title = models.CharField(max_length=100, help_text="Title of the list")
+    category = RichChoiceField(
+        choice_group="top_list_categories",
+        domain="accounts",
+        max_length=2,
+        help_text="Category of items in this list",
+    )
+    description = models.TextField(blank=True, help_text="Description of the list")
+    is_public = models.BooleanField(default=True, help_text="Whether this list is visible to others")
+
+    class Meta(TrackedModel.Meta):
+        verbose_name = "User List"
+        verbose_name_plural = "User Lists"
+        ordering = ["-updated_at"]
+
+    def __str__(self):
+        return f"{self.user.username}'s {self.category} List: {self.title}"
+
+
+@pghistory.track()
+class ListItem(TrackedModel):
+    user_list = models.ForeignKey(
+        UserList,
+        on_delete=models.CASCADE,
+        related_name="items",
+        help_text="List this item belongs to",
+    )
+    content_type = models.ForeignKey(
+        ContentType,
+        on_delete=models.CASCADE,
+        help_text="Type of item (park, ride, etc.)",
+    )
+    object_id = models.PositiveIntegerField(help_text="ID of the item")
+    content_object = GenericForeignKey("content_type", "object_id")
+    rank = models.PositiveIntegerField(help_text="Position in the list")
+    notes = models.TextField(blank=True, help_text="User's notes about this item")
+
+    class Meta(TrackedModel.Meta):
+        verbose_name = "List Item"
+        verbose_name_plural = "List Items"
+        ordering = ["rank"]
+        unique_together = [["user_list", "rank"]]
+
+    def __str__(self):
+        return f"#{self.rank} in {self.user_list.title}"