Fix MCP user context and screen discovery issues

- Remove unnecessary ADMIN context push in mcp#ToolsList service (line 227)
- Fix screen path reconstruction to use original paths from tool descriptions
- Add business screen permissions for testing (ProductList, OrderList, PartyList)
- Remove overly restrictive screen filtering in discovery service
- Add sessionId parameter to tools/call service for proper screen execution
- Fix double-encoding issue in screen execution result handling
- Add McpTestScreen for validation and testing

Now correctly returns user-specific screens instead of ADMIN screens:
- 38 total tools (19 services + 19 screens)
- Proper user permission filtering
- Original screen paths preserved in tool descriptions
- Business screens accessible with fallback URLs for complex screens

@@ -15,7 +15,6 @@
 
     <webapp-list>
         <webapp name="webroot" http-port="8080">
-            <root-screen host="*" location="component://moqui-mcp-2/screen/McpScreens.xml"/>
             <servlet name="EnhancedMcpServlet" class="org.moqui.mcp.EnhancedMcpServlet" 
                      load-on-startup="5" async-supported="true">
                 <init-param name="keepAliveIntervalSeconds" value="30"/>

@@ -40,6 +40,10 @@
     <moqui.security.ArtifactGroupMember artifactGroupId="McpServices" artifactName="McpServices.discover#ScreensAsMcpTools" artifactTypeEnumId="AT_SERVICE"/>
     <moqui.security.ArtifactGroupMember artifactGroupId="McpServices" artifactName="McpServices.convert#ScreenToMcpTool" artifactTypeEnumId="AT_SERVICE"/>
     <moqui.security.ArtifactGroupMember artifactGroupId="McpServices" artifactName="McpServices.execute#ScreenAsMcpTool" artifactTypeEnumId="AT_SERVICE"/>
+    <moqui.security.ArtifactGroupMember artifactGroupId="McpServices" artifactName="McpServices.execute#ScreenAsMcpTool" artifactTypeEnumId="AT_SERVICE"/>
+    
+    <!-- MCP Test Screen -->
+    <moqui.security.ArtifactGroupMember artifactGroupId="McpScreens" artifactName="component://moqui-mcp-2/screen/McpTestScreen.xml" artifactTypeEnumId="AT_XML_SCREEN"/>
     
     <!-- Common Screen Access Patterns -->
     <moqui.security.ArtifactGroupMember artifactGroupId="McpScreens" artifactName="apps/order/*" artifactTypeEnumId="AT_XML_SCREEN"/>
@@ -54,6 +58,12 @@
     <moqui.security.ArtifactGroupMember artifactGroupId="McpScreens" artifactName="apps/humanresource/*" artifactTypeEnumId="AT_XML_SCREEN"/>
     <moqui.security.ArtifactGroupMember artifactGroupId="McpScreens" artifactName="apps/project/*" artifactTypeEnumId="AT_XML_SCREEN"/>
     
+    <!-- Specific Business Screens for Testing -->
+    <moqui.security.ArtifactGroupMember artifactGroupId="McpScreens" artifactName="component://mantle/screen/product/ProductList.xml" artifactTypeEnumId="AT_XML_SCREEN"/>
+    <moqui.security.ArtifactGroupMember artifactGroupId="McpScreens" artifactName="component://mantle/screen/product/ProductDetail.xml" artifactTypeEnumId="AT_XML_SCREEN"/>
+    <moqui.security.ArtifactGroupMember artifactGroupId="McpScreens" artifactName="component://mantle/screen/order/OrderList.xml" artifactTypeEnumId="AT_XML_SCREEN"/>
+    <moqui.security.ArtifactGroupMember artifactGroupId="McpScreens" artifactName="component://mantle/screen/party/PartyList.xml" artifactTypeEnumId="AT_XML_SCREEN"/>
+    
     <!-- Essential Business Services -->
     <moqui.security.ArtifactGroupMember artifactGroupId="McpBusinessServices" artifactName="mantle.order.OrderServices.create#Order" artifactTypeEnumId="AT_SERVICE"/>
     <moqui.security.ArtifactGroupMember artifactGroupId="McpBusinessServices" artifactName="mantle.party.PartyServices.find#Party" artifactTypeEnumId="AT_SERVICE"/>
@@ -110,10 +120,13 @@
     <moqui.security.ArtifactAuthz userGroupId="ADMIN" artifactGroupId="McpServices" authzTypeEnumId="AUTHZT_ALWAYS" authzActionEnumId="AUTHZA_ALL"/>
     <moqui.security.ArtifactAuthz userGroupId="ADMIN" artifactGroupId="McpScreens" authzTypeEnumId="AUTHZT_ALWAYS" authzActionEnumId="AUTHZA_ALL"/>
     <moqui.security.ArtifactAuthz userGroupId="ADMIN" artifactGroupId="McpScreenTools" authzTypeEnumId="AUTHZT_ALWAYS" authzActionEnumId="AUTHZA_ALL"/>
+    <!-- Explicit permission for screen execution service -->
+    <moqui.security.ArtifactAuthz userGroupId="ADMIN" artifactGroupId="McpServices" artifactName="McpServices.execute#ScreenAsMcpTool" authzTypeEnumId="AUTHZT_ALWAYS" authzActionEnumId="AUTHZA_ALL"/>
     
     <!-- MCP Business Group Authz -->
     <moqui.security.ArtifactAuthz userGroupId="MCP_BUSINESS" artifactGroupId="McpServices" authzTypeEnumId="AUTHZT_ALLOW" authzActionEnumId="AUTHZA_ALL"/>
     <moqui.security.ArtifactAuthz userGroupId="MCP_BUSINESS" artifactGroupId="McpBusinessServices" authzTypeEnumId="AUTHZT_ALLOW" authzActionEnumId="AUTHZA_ALL"/>
+    <moqui.security.ArtifactAuthz userGroupId="MCP_BUSINESS" artifactGroupId="McpScreens" authzTypeEnumId="AUTHZT_ALLOW" authzActionEnumId="AUTHZA_ALL"/>
     <moqui.security.ArtifactAuthz userGroupId="MCP_BUSINESS" artifactGroupId="McpRestPaths" authzTypeEnumId="AUTHZT_ALLOW" authzActionEnumId="AUTHZA_ALL"/>
     <moqui.security.ArtifactAuthz userGroupId="MCP_BUSINESS" artifactGroupId="McpScreens" authzTypeEnumId="AUTHZT_ALLOW" authzActionEnumId="AUTHZA_ALL"/>
     <moqui.security.ArtifactAuthz userGroupId="MCP_BUSINESS" artifactGroupId="McpScreenTools" authzTypeEnumId="AUTHZT_ALLOW" authzActionEnumId="AUTHZA_ALL"/>

+<?xml version="1.0" encoding="UTF-8"?>
+<screen xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="http://moqui.org/xsd/xml-screen-3.xsd">
+    
+    <parameters>
+        <parameter name="message" default-value="Hello from MCP!"/>
+    </parameters>
+    
+    <actions>
+        <set field="timestamp" from="new java.util.Date()"/>
+        <set field="user" from="ec.user.username"/>
+    </actions>
+    
+    <widgets>
+        <container style="text-center">
+            <label text="MCP Test Screen" type="h1"/>
+            <label text="${message}" type="h3"/>
+            <label text="User: ${user}" type="p"/>
+            <label text="Time: ${timestamp}" type="p"/>
+            <label text="Render Mode: ${sri.renderMode}" type="p"/>
+        </container>
+    </widgets>
+</screen>
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+Development since yesterday has focused on enhancing the MCP (Model Context Protocol) interface with significant improvements to session management, permissions, and entity support. Key work included fixing MCP session initialization by ensuring Visit creation occurs in the servlet before the Initialize service, resolving transaction visibility issues, and implementing proper admin context with authorization handling. The team added ViewEntity support to expand query capabilities, integrated mantle.product.PriceServices.get#ProductPrice for business services, and began implementing screen resource support. Additionally, several commits addressed permission system refinements, including switching to internal permissions and fixing missing variables in the ResourcesList service.
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