feat: Implement AI Knowledge Sync Utilities and Event Handlers

- Added AIKnowledgeActivationStatus and AIKnowledgeSyncStatus enums to models.py for managing activation and sync states.
- Introduced AIKnowledgeSync class in aiknowledge_sync_utils.py for synchronizing CAIKnowledge entities with XAI Collections, including collection lifecycle management, document synchronization, and metadata updates.
- Created a daily cron job (aiknowledge_full_sync_cron_step.py) to perform a full sync of CAIKnowledge entities.
- Developed an event handler (aiknowledge_sync_event_step.py) to synchronize CAIKnowledge entities with XAI Collections triggered by webhooks and cron jobs.
- Implemented a webhook handler (aiknowledge_update_api_step.py) to receive updates from EspoCRM for CAIKnowledge entities and enqueue sync events.
- Enhanced xai_service.py with methods for collection management, document listing, and metadata updates.

steps/vmh/aiknowledge_full_sync_cron_step.py

@@ -0,0 +1,90 @@
+"""AI Knowledge Full Sync - Daily Cron Job"""
+from typing import Any
+from motia import FlowContext, cron
+
+
+config = {
+    "name": "AI Knowledge Full Sync",
+    "description": "Daily full sync of all CAIKnowledge entities (catches missed webhooks)",
+    "flows": ["aiknowledge-full-sync"],
+    "triggers": [
+        cron("0 0 2 * * *"),  # Daily at 2:00 AM
+    ],
+    "enqueues": ["aiknowledge.sync"],
+}
+
+
+async def handler(input_data: None, ctx: FlowContext[Any]) -> None:
+    """
+    Daily full sync handler.
+    
+    Loads all CAIKnowledge entities that need sync and emits events.
+    Runs every day at 02:00:00.
+    """
+    from services.espocrm import EspoCRMAPI
+    from services.models import AIKnowledgeActivationStatus, AIKnowledgeSyncStatus
+    
+    ctx.logger.info("=" * 80)
+    ctx.logger.info("🌙 DAILY FULL SYNC STARTED")
+    ctx.logger.info("=" * 80)
+    
+    espocrm = EspoCRMAPI(ctx)
+    
+    try:
+        # Load all CAIKnowledge entities with status 'active' that need sync
+        result = await espocrm.list_entities(
+            'CAIKnowledge',
+            where=[
+                {
+                    'type': 'equals',
+                    'attribute': 'activationStatus',
+                    'value': AIKnowledgeActivationStatus.ACTIVE.value
+                },
+                {
+                    'type': 'in',
+                    'attribute': 'syncStatus',
+                    'value': [
+                        AIKnowledgeSyncStatus.UNCLEAN.value,
+                        AIKnowledgeSyncStatus.FAILED.value
+                    ]
+                }
+            ],
+            select='id,name,syncStatus',
+            max_size=1000  # Adjust if you have more
+        )
+        
+        entities = result.get('list', [])
+        total = len(entities)
+        
+        ctx.logger.info(f"📊 Found {total} knowledge bases needing sync")
+        
+        if total == 0:
+            ctx.logger.info("✅ All knowledge bases are synced")
+            ctx.logger.info("=" * 80)
+            return
+        
+        # Enqueue sync events for all
+        for i, entity in enumerate(entities, 1):
+            await ctx.enqueue({
+                'topic': 'aiknowledge.sync',
+                'data': {
+                    'knowledge_id': entity['id'],
+                    'source': 'daily_full_sync'
+                }
+            })
+            
+            ctx.logger.info(
+                f"📤 [{i}/{total}] Enqueued: {entity['name']} "
+                f"(syncStatus={entity.get('syncStatus')})"
+            )
+        
+        ctx.logger.info("=" * 80)
+        ctx.logger.info(f"✅ Full sync complete: {total} events enqueued")
+        ctx.logger.info("=" * 80)
+    
+    except Exception as e:
+        ctx.logger.error("=" * 80)
+        ctx.logger.error("❌ FULL SYNC FAILED")
+        ctx.logger.error("=" * 80)
+        ctx.logger.error(f"Error: {e}", exc_info=True)
+        raise