Remove aws-admin pattern completely - use account + GlobalIntegrationSettings

ARCHITECTURE FIX:
- aws-admin IntegrationSettings will NEVER exist (it's a legacy pattern)
- Only user's own account IntegrationSettings can exist (if they override defaults)
- Otherwise GlobalIntegrationSettings is used directly
- API keys are ALWAYS from GlobalIntegrationSettings (accounts cannot override API keys)

REMOVED:
- All aws-admin Account lookups
- All aws-admin IntegrationSettings fallback attempts
- Confusing nested try/except chains

CORRECT FLOW NOW:
1. Try account's IntegrationSettings for config overrides
2. Use GlobalIntegrationSettings for missing values and ALL API keys
3. No intermediate aws-admin lookups

backend/igny8_core/ai/functions/generate_image_prompts.py

@@ -220,17 +220,15 @@ class GenerateImagePromptsFunction(BaseAIFunction):
     def _get_max_in_article_images(self, account) -> int:
         """
         Get max_in_article_images from settings.
-        Tries aws-admin IntegrationSettings first, falls back to GlobalIntegrationSettings.
+        Uses account's IntegrationSettings override, or GlobalIntegrationSettings.
         """
         from igny8_core.modules.system.models import IntegrationSettings
         from igny8_core.modules.system.global_settings_models import GlobalIntegrationSettings
-        from igny8_core.auth.models import Account
         
-        # Try aws-admin IntegrationSettings first (legacy pattern)
+        # Try account-specific override first
         try:
-            system_account = Account.objects.get(slug='aws-admin')
             settings = IntegrationSettings.objects.get(
-                account=system_account,
+                account=account,
                 integration_type='image_generation',
                 is_active=True
             )
@@ -238,15 +236,15 @@ class GenerateImagePromptsFunction(BaseAIFunction):
             
             if max_images is not None:
                 max_images = int(max_images)
-                logger.info(f"Using max_in_article_images={max_images} from aws-admin IntegrationSettings")
+                logger.info(f"Using max_in_article_images={max_images} from account {account.id} IntegrationSettings override")
                 return max_images
-        except (Account.DoesNotExist, IntegrationSettings.DoesNotExist):
-            logger.debug("aws-admin IntegrationSettings not found, falling back to GlobalIntegrationSettings")
+        except IntegrationSettings.DoesNotExist:
+            logger.debug(f"No IntegrationSettings override for account {account.id}, using GlobalIntegrationSettings")
         
-        # Fall back to GlobalIntegrationSettings
+        # Use GlobalIntegrationSettings default
         global_settings = GlobalIntegrationSettings.get_instance()
         max_images = global_settings.max_in_article_images
-        logger.info(f"Using max_in_article_images={max_images} from GlobalIntegrationSettings")
+        logger.info(f"Using max_in_article_images={max_images} from GlobalIntegrationSettings (account {account.id})")
         return max_images
     
     def _extract_content_elements(self, content: Content, max_images: int) -> Dict:

backend/igny8_core/ai/functions/generate_images.py

@@ -68,25 +68,23 @@ class GenerateImagesFunction(BaseAIFunction):
             raise ValueError("No tasks found")
         
         # Get image generation settings
-        # Try aws-admin IntegrationSettings first (legacy), fall back to GlobalIntegrationSettings
+        # Try account-specific override, otherwise use GlobalIntegrationSettings
         from igny8_core.modules.system.models import IntegrationSettings
         from igny8_core.modules.system.global_settings_models import GlobalIntegrationSettings
-        from igny8_core.auth.models import Account
         
         image_settings = {}
         try:
-            system_account = Account.objects.get(slug='aws-admin')
             integration = IntegrationSettings.objects.get(
-                account=system_account,
+                account=account,
                 integration_type='image_generation',
                 is_active=True
             )
             image_settings = integration.config or {}
-            logger.info("Using image settings from aws-admin IntegrationSettings")
-        except (Account.DoesNotExist, IntegrationSettings.DoesNotExist):
-            logger.info("aws-admin IntegrationSettings not found, using GlobalIntegrationSettings")
+            logger.info(f"Using image settings from account {account.id} IntegrationSettings override")
+        except IntegrationSettings.DoesNotExist:
+            logger.info(f"No IntegrationSettings override for account {account.id}, using GlobalIntegrationSettings")
         
-        # Fall back to GlobalIntegrationSettings for missing values
+        # Use GlobalIntegrationSettings for missing values
         global_settings = GlobalIntegrationSettings.get_instance()
         
         # Extract settings with defaults from global settings