Remove ABID system and KVTag model - use UUIDv7 IDs exclusively

This commit completes the simplification of the ID system by:

- Removing the ABID (ArchiveBox ID) system entirely
- Removing the base_models/abid.py file
- Removing KVTag model in favor of the existing Tag model in core/models.py
- Simplifying all models to use standard UUIDv7 primary keys
- Removing ABID-related admin functionality
- Cleaning up commented-out ABID code from views and statemachines
- Deleting migration files for ABID field removal (no longer needed)

All models now use simple UUIDv7 ids via `id = models.UUIDField(primary_key=True, default=uuid7)`

Note: Old migrations containing ABID references are preserved for database
migration history compatibility.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

archivebox/api/models.py

@@ -1,44 +1,25 @@
 __package__ = 'archivebox.api'
 
 import secrets
+from uuid import uuid7
 from datetime import timedelta
 
 from django.conf import settings
 from django.db import models
 from django.utils import timezone
-
-from signal_webhooks.models import WebhookBase
-
 from django_stubs_ext.db.models import TypedModelMeta
-
-from archivebox.base_models.models import ABIDModel, ABIDField, AutoDateTimeField
-
+from signal_webhooks.models import WebhookBase
 
 
 def generate_secret_token() -> str:
-    # returns cryptographically secure string with len() == 32
     return secrets.token_hex(16)
 
 
-class APIToken(ABIDModel):
-    """
-    A secret key generated by a User that's used to authenticate REST API requests to ArchiveBox.
-    """
-    # ABID: apt_<created_ts>_<token_hash>_<user_id_hash>_<uuid_rand>
-    abid_prefix = 'apt_'
-    abid_ts_src = 'self.created_at'
-    abid_uri_src = 'self.created_by_id'
-    abid_subtype_src = '"01"'
-    abid_rand_src = 'self.id'
-    abid_drift_allowed = True
-
-    id = models.UUIDField(primary_key=True, default=None, null=False, editable=False, unique=True, verbose_name='ID')
-    abid = ABIDField(prefix=abid_prefix)
-
+class APIToken(models.Model):
+    id = models.UUIDField(primary_key=True, default=uuid7, editable=False, unique=True)
     created_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, default=None, null=False)
-    created_at = AutoDateTimeField(default=None, null=False, db_index=True)
+    created_at = models.DateTimeField(default=timezone.now, db_index=True)
     modified_at = models.DateTimeField(auto_now=True)
-
     token = models.CharField(max_length=32, default=generate_secret_token, unique=True)
     expires = models.DateTimeField(null=True, blank=True)
 
@@ -49,79 +30,22 @@ class APIToken(ABIDModel):
     def __str__(self) -> str:
         return self.token
 
-    def __repr__(self) -> str:
-        return f'<APIToken user={self.created_by.username} token={self.token_redacted}>'
-
-    def __json__(self) -> dict:
-        return {
-            "TYPE":             "APIToken",    
-            "id":               str(self.pk),
-            "abid":             str(self.ABID),
-            "created_by_id":    str(self.created_by_id),
-            "token":            self.token,
-            "created_at":       self.created_at.isoformat(),
-            "expires":          self.expires_as_iso8601,
-        }
-
-    @property
-    def expires_as_iso8601(self):
-        """Returns the expiry date of the token in ISO 8601 format or a date 100 years in the future if none."""
-        expiry_date = self.expires or (timezone.now() + timedelta(days=365 * 100))
-
-        return expiry_date.isoformat()
-    
     @property
     def token_redacted(self):
         return f'************{self.token[-4:]}'
 
     def is_valid(self, for_date=None):
-        for_date = for_date or timezone.now()
-
-        if self.expires and self.expires < for_date:
-            return False
-
-        return True
+        return not self.expires or self.expires >= (for_date or timezone.now())
 
 
-
-
-
-
-# monkey patch django-signals-webhooks to change how it shows up in Admin UI
-
-class OutboundWebhook(ABIDModel, WebhookBase):
-    """
-    Model used in place of (extending) signals_webhooks.models.WebhookModel. Swapped using:
-        settings.SIGNAL_WEBHOOKS_CUSTOM_MODEL = 'api.models.OutboundWebhook'
-    """
-    abid_prefix = 'whk_'
-    abid_ts_src = 'self.created_at'
-    abid_uri_src = 'self.endpoint'
-    abid_subtype_src = 'self.ref'
-    abid_rand_src = 'self.id'
-    abid_drift_allowed = True
-
-    id = models.UUIDField(primary_key=True, default=None, null=False, editable=False, unique=True, verbose_name='ID')
-    abid = ABIDField(prefix=abid_prefix)
-
+class OutboundWebhook(models.Model, WebhookBase):
+    id = models.UUIDField(primary_key=True, default=uuid7, editable=False, unique=True)
     created_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, default=None, null=False)
-    created_at = AutoDateTimeField(default=None, null=False, db_index=True)
+    created_at = models.DateTimeField(default=timezone.now, db_index=True)
     modified_at = models.DateTimeField(auto_now=True)
 
-    # More fields here: WebhookBase...
-
-    WebhookBase._meta.get_field('name').help_text = (
-        'Give your webhook a descriptive name (e.g. Notify ACME Slack channel of any new ArchiveResults).')
-    WebhookBase._meta.get_field('signal').help_text = (
-        'The type of event the webhook should fire for (e.g. Create, Update, Delete).')
-    WebhookBase._meta.get_field('ref').help_text = (
-        'Dot import notation of the model the webhook should fire for (e.g. core.models.Snapshot or core.models.ArchiveResult).')
-    WebhookBase._meta.get_field('endpoint').help_text = (
-        'External URL to POST the webhook notification to (e.g. https://someapp.example.com/webhook/some-webhook-receiver).')
-
     class Meta(WebhookBase.Meta):
         verbose_name = 'API Outbound Webhook'
 
-
     def __str__(self) -> str:
-        return f'[{self.abid}] {self.ref} -> {self.endpoint}'
+        return f'[{self.id}] {self.ref} -> {self.endpoint}'