fix(backend): resolve circular imports and Pydantic model rebuild issues

- Fix circular import between integrations.py and library/model.py by moving Webhook import to TYPE_CHECKING
- Add runtime import for LibraryAgentPreset in integrations.py with explanatory comment
- Create data/__init__.py to handle proper Pydantic model rebuilding after all imports are available
- Update library/model.py imports to use module prefixes (block_model, graph_model)
- Fix BlockInput, GraphTriggerInfo, and GraphModel forward reference issues
- Ensure NodeModel and LibraryAgentPreset models are properly rebuilt for forward references

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

Co-Authored-By: Claude <[email protected]>

Author: majdyz

autogpt_platform/backend/backend/data/integrations.py

@@ -1,5 +1,5 @@
 import logging
-from typing import AsyncGenerator, Literal, Optional, overload
+from typing import TYPE_CHECKING, AsyncGenerator, Literal, Optional, overload
 
 from prisma.models import AgentNode, AgentPreset, IntegrationWebhook
 from prisma.types import (
@@ -19,10 +19,15 @@
 from backend.integrations.providers import ProviderName
 from backend.integrations.webhooks import get_webhook_manager
 from backend.integrations.webhooks.utils import webhook_ingress_url
-from backend.server.v2.library.model import LibraryAgentPreset
 from backend.util.exceptions import NotFoundError
 from backend.util.json import SafeJson
 
+if TYPE_CHECKING:
+    # LibraryAgentPreset import is moved to TYPE_CHECKING to avoid circular import:
+    # integrations.py → library/model.py → integrations.py (for Webhook)
+    # Runtime import is used in WebhookWithRelations.from_db() method instead
+    from backend.server.v2.library.model import LibraryAgentPreset
+
 from .db import BaseDbModel
 from .graph import NodeModel
 
@@ -64,7 +69,7 @@ def from_db(webhook: IntegrationWebhook):
 
 class WebhookWithRelations(Webhook):
     triggered_nodes: list[NodeModel]
-    triggered_presets: list[LibraryAgentPreset]
+    triggered_presets: list["LibraryAgentPreset"]
 
     @staticmethod
     def from_db(webhook: IntegrationWebhook):
@@ -73,6 +78,9 @@ def from_db(webhook: IntegrationWebhook):
                 "AgentNodes and AgentPresets must be included in "
                 "IntegrationWebhook query with relations"
             )
+        # Import at runtime to avoid circular dependency
+        from backend.server.v2.library.model import LibraryAgentPreset
+
         return WebhookWithRelations(
             **Webhook.from_db(webhook).model_dump(),
             triggered_nodes=[NodeModel.from_db(node) for node in webhook.AgentNodes],

autogpt_platform/backend/snapshots/lib_agts_search

@@ -25,7 +25,6 @@
         "properties": {}
       },
       "has_external_trigger": false,
-      "has_human_in_the_loop": false,
       "trigger_setup_info": null,
       "new_output": false,
       "can_access_graph": true,
@@ -59,7 +58,6 @@
         "properties": {}
       },
       "has_external_trigger": false,
-      "has_human_in_the_loop": false,
       "trigger_setup_info": null,
       "new_output": false,
       "can_access_graph": false,