Add agent runtime infrastructure

- AgentEntities.xml: Entity extensions for agent tasks
- AgentServices.xml: Agent runner, client, and queue services
- AgentData.xml: Scheduled job, user, and AI config seed data

+<?xml version="1.0" encoding="UTF-8"?>
+<entity-facade-xml xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="http://moqui.org/xsd/entity-facade-3.xsd" type="seed">
+
+    <!-- ========================================================= -->
+    <!-- Agent Runtime Scheduled Job                               -->
+    <!-- ========================================================= -->
+
+    <moqui.service.ScheduledJob 
+        jobName="AgentQueuePoller" 
+        description="Polls Agent Queue and processes pending tasks"
+        serviceName="AgentServices.poll#AgentQueue"
+        cronExpression="0/30 * * * * ?" 
+        runAsUser="ADMIN"
+        paused="N"/>
+
+    <!-- ========================================================= -->
+    <!-- Agent User Account (for authentication)                     -->
+    <!-- ========================================================= -->
+
+    <moqui.security.UserAccount 
+        userId="AGENT_CLAUDE" 
+        username="agent-claude" 
+        currentPassword="16ac58bbfa332c1c55bd98b53e60720bfa90d394" 
+        passwordHashType="SHA"
+        enabled="Y"
+        description="Agent user for AI runtime"/>
+
+    <moqui.security.UserGroup userGroupId="AgentUsers" description="AI Agent Users"/>
+    <moqui.security.UserGroupMember userGroupId="AgentUsers" userId="AGENT_CLAUDE" fromDate="2026-02-04 00:00:00.000"/>
+
+    <!-- Agent users have permission to execute the delegation service -->
+    <moqui.security.ArtifactGroup artifactGroupId="AgentDelegationServices" description="Agent Tool Delegation Services"/>
+    <moqui.security.ArtifactGroupMember artifactGroupId="AgentDelegationServices" artifactName="AgentServices.call#McpToolWithDelegation" artifactTypeEnumId="AT_SERVICE"/>
+    <moqui.security.ArtifactAuthz userGroupId="AgentUsers" artifactGroupId="AgentDelegationServices" authzTypeEnumId="AUTHZT_ALLOW" authzActionEnumId="AUTHZA_ALL"/>
+
+    <!-- ========================================================= -->
+    <!-- Sample AI Configuration (for testing)                        -->
+    <!-- ========================================================= -->
+
+    <!-- Using localhost:11434 for Ollama (if available) -->
+    <!-- Or configure for your VLLM/OpenAI endpoint -->
+    <moqui.mcp.agent.ProductStoreAiConfig 
+        productStoreId="POPCOMMERCE_RETAIL" 
+        aiConfigId="DEFAULT"
+        serviceTypeEnumId="AistOllama"
+        description="Default AI Config for Testing (Ollama)"
+        endpointUrl="http://localhost:11434/v1"
+        modelName="llama3.2:3b"
+        temperature="0.7"
+        maxTokens="2048"
+        />
+
+</entity-facade-xml>

+<?xml version="1.0" encoding="UTF-8"?>
+<entities xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:noNamespaceSchemaLocation="http://moqui.org/xsd/entity-definition-3.xsd">
+
+    <!-- ========================================================= -->
+    <!-- System Message Extensions for Agent Tasks -->
+    <!-- ========================================================= -->
+
+    <extend-entity entity-name="SystemMessage" package="moqui.service.message">
+        <field name="requestedByPartyId" type="id">
+            <description>The human user (Party) who requested this agent task.</description>
+        </field>
+        <field name="effectiveUserId" type="id">
+            <description>The UserAccount ID to impersonate during execution (RBAC context).</description>
+        </field>
+        <field name="productStoreId" type="id">
+            <description>The context ProductStore for this task (determines AI config).</description>
+        </field>
+        <field name="aiConfigId" type="id">
+            <description>Specific AI configuration used for this task.</description>
+        </field>
+
+        <relationship type="one" title="RequestedBy" related="mantle.party.Party">
+            <key-map field-name="requestedByPartyId" related="partyId"/>
+        </relationship>
+        <!-- Note: effectiveUserId links to UserAccount, but we don't force FK to allow system users -->
+        <relationship type="one" related="mantle.product.store.ProductStore">
+            <key-map field-name="productStoreId"/>
+        </relationship>
+        <relationship type="one" related="moqui.mcp.agent.ProductStoreAiConfig">
+            <key-map field-name="productStoreId"/>
+            <key-map field-name="aiConfigId"/>
+        </relationship>
+    </extend-entity>
+
+    <!-- ========================================================= -->
+    <!-- AI Gateway Configuration (Per Store) -->
+    <!-- ========================================================= -->
+
+    <entity entity-name="ProductStoreAiConfig" package="moqui.mcp.agent">
+        <description>Configures AI Service Providers (OpenAI, VLLM, etc.) per Product Store.</description>
+        
+        <field name="productStoreId" type="id" is-pk="true"/>
+        <field name="aiConfigId" type="id" is-pk="true"/>
+        
+        <field name="serviceTypeEnumId" type="id"/>
+        <field name="description" type="text-medium"/>
+        
+        <!-- Connection Details -->
+        <field name="endpointUrl" type="text-medium"/>
+        <field name="apiKey" type="text-medium" encrypt="true"/>
+        <field name="organizationId" type="text-short"/>
+        
+        <!-- Model Parameters -->
+        <field name="modelName" type="text-short"/>
+        <field name="temperature" type="number-decimal"/>
+        <field name="maxTokens" type="number-integer"/>
+        
+        <!-- System Prompt Template -->
+        <field name="systemMessageId" type="id">
+             <description>Template for the system prompt (instruction set)</description>
+        </field>
+
+        <relationship type="one" related="mantle.product.store.ProductStore">
+            <key-map field-name="productStoreId"/>
+        </relationship>
+        <relationship type="one" title="AiServiceType" related="moqui.basic.Enumeration">
+            <key-map field-name="serviceTypeEnumId" related="enumId"/>
+        </relationship>
+        <relationship type="one" title="PromptTemplate" related="moqui.service.message.SystemMessage">
+            <key-map field-name="systemMessageId"/>
+        </relationship>
+        
+        <seed-data>
+            <!-- AI Service Types -->
+            <moqui.basic.EnumerationType description="AI Service Type" enumTypeId="AiServiceType"/>
+            <moqui.basic.Enumeration enumId="AistOpenAi" description="OpenAI" enumTypeId="AiServiceType"/>
+            <moqui.basic.Enumeration enumId="AistVllm" description="VLLM (OpenAI Compatible)" enumTypeId="AiServiceType"/>
+            <moqui.basic.Enumeration enumId="AistAnthropic" description="Anthropic" enumTypeId="AiServiceType"/>
+            <moqui.basic.Enumeration enumId="AistOllama" description="Ollama" enumTypeId="AiServiceType"/>
+            
+            <!-- Agent Task Message Type -->
+            <moqui.basic.Enumeration enumId="SmtyAgentTask" description="Agent Task" enumTypeId="SystemMessageType"/>
+            
+            <!-- AI Product Store Settings -->
+            <moqui.basic.Enumeration enumId="AiEndpointUrl" description="AI Endpoint URL" enumTypeId="ProductStoreSettingType"/>
+            <moqui.basic.Enumeration enumId="AiApiKey" description="AI API Key" enumTypeId="ProductStoreSettingType"/>
+            <moqui.basic.Enumeration enumId="AiModelName" description="AI Model Name" enumTypeId="ProductStoreSettingType"/>
+            <moqui.basic.Enumeration enumId="AiTemperature" description="AI Temperature" enumTypeId="ProductStoreSettingType"/>
+        </seed-data>
+    </entity>
+
+</entities>