Remove template IDs from MCP tool call metadata (#33467)

## What changed

- Remove `template_id` from MCP tool call items and lifecycle events.
- Remove `templateId` from app-server `McpToolCallAppContext` responses and generated schemas.
- Update protocol conversions, documentation, and existing test expectations for the revised metadata shape.

GitOrigin-RevId: f2b1304eadff661eec3966673ea71206b1542b98

codex-rs/app-server-protocol/src/protocol/thread_history.rs

@@ -773,7 +773,6 @@ impl ThreadHistoryBuilder {
                     link_id: payload.link_id.clone(),
                     resource_uri: payload.mcp_app_resource_uri.clone(),
                     app_name: payload.app_name.clone(),
-                    template_id: payload.template_id.clone(),
                     action_name: payload.action_name.clone(),
                 }),
             mcp_app_resource_uri: payload.mcp_app_resource_uri.clone(),
@@ -826,7 +825,6 @@ impl ThreadHistoryBuilder {
                     link_id: payload.link_id.clone(),
                     resource_uri: payload.mcp_app_resource_uri.clone(),
                     app_name: payload.app_name.clone(),
-                    template_id: payload.template_id.clone(),
                     action_name: payload.action_name.clone(),
                 }),
             mcp_app_resource_uri: payload.mcp_app_resource_uri.clone(),
@@ -2702,7 +2700,6 @@ mod tests {
                 mcp_app_resource_uri: None,
                 link_id: None,
                 app_name: None,
-                template_id: None,
                 action_name: None,
                 plugin_id: None,
                 duration: Duration::from_millis(8),
@@ -2791,7 +2788,6 @@ mod tests {
                 mcp_app_resource_uri: Some("ui://widget/lookup.html".into()),
                 link_id: Some("link_calendar".into()),
                 app_name: Some("Calendar".into()),
-                template_id: Some("calendar_template".into()),
                 action_name: Some("lookup".into()),
                 plugin_id: Some("sample@test".into()),
                 duration: Duration::from_millis(8),
@@ -2828,7 +2824,6 @@ mod tests {
                     link_id: Some("link_calendar".into()),
                     resource_uri: Some("ui://widget/lookup.html".into()),
                     app_name: Some("Calendar".into()),
-                    template_id: Some("calendar_template".into()),
                     action_name: Some("lookup".into()),
                 }),
                 mcp_app_resource_uri: Some("ui://widget/lookup.html".into()),

codex-rs/app-server-protocol/src/protocol/v2/item.rs

@@ -398,7 +398,6 @@ pub struct McpToolCallAppContext {
     pub link_id: Option<String>,
     pub resource_uri: Option<String>,
     pub app_name: Option<String>,
-    pub template_id: Option<String>,
     pub action_name: Option<String>,
 }
 
@@ -950,7 +949,6 @@ impl From<CoreTurnItem> for ThreadItem {
                         link_id: mcp.link_id,
                         resource_uri: mcp.mcp_app_resource_uri.clone(),
                         app_name: mcp.app_name,
-                        template_id: mcp.template_id,
                         action_name: mcp.action_name,
                     }),
                     mcp_app_resource_uri: mcp.mcp_app_resource_uri,

codex-rs/app-server-protocol/src/protocol/v2/tests.rs

@@ -2877,7 +2877,6 @@ fn core_turn_item_into_thread_item_converts_supported_variants() {
         mcp_app_resource_uri: Some("app://connector".to_string()),
         link_id: Some("link_calendar".to_string()),
         app_name: Some("Calendar".to_string()),
-        template_id: Some("calendar_template".to_string()),
         action_name: Some("create_event".to_string()),
         plugin_id: Some("sample@test".to_string()),
         status: CoreMcpToolCallStatus::InProgress,
@@ -2899,7 +2898,6 @@ fn core_turn_item_into_thread_item_converts_supported_variants() {
                 link_id: Some("link_calendar".to_string()),
                 resource_uri: Some("app://connector".to_string()),
                 app_name: Some("Calendar".to_string()),
-                template_id: Some("calendar_template".to_string()),
                 action_name: Some("create_event".to_string()),
             }),
             mcp_app_resource_uri: Some("app://connector".to_string()),
@@ -2919,7 +2917,6 @@ fn core_turn_item_into_thread_item_converts_supported_variants() {
         mcp_app_resource_uri: None,
         link_id: None,
         app_name: None,
-        template_id: None,
         action_name: None,
         plugin_id: None,
         status: CoreMcpToolCallStatus::Completed,
@@ -2968,7 +2965,6 @@ fn mcp_tool_call_app_context_serializes_connector_id() {
             link_id: Some("link_calendar".to_string()),
             resource_uri: Some("app://connector".to_string()),
             app_name: Some("Calendar".to_string()),
-            template_id: Some("calendar_template".to_string()),
             action_name: Some("create_event".to_string()),
         }),
         mcp_app_resource_uri: Some("app://connector".to_string()),
@@ -2992,7 +2988,6 @@ fn mcp_tool_call_app_context_serializes_connector_id() {
                 "linkId": "link_calendar",
                 "resourceUri": "app://connector",
                 "appName": "Calendar",
-                "templateId": "calendar_template",
                 "actionName": "create_event",
             },
             "mcpAppResourceUri": "app://connector",
@@ -3012,7 +3007,6 @@ fn mcp_tool_call_app_context_serializes_missing_mixed_version_fields_as_null() {
             link_id: None,
             resource_uri: None,
             app_name: None,
-            template_id: None,
             action_name: None,
         })
         .expect("MCP tool call app context should serialize"),
@@ -3021,7 +3015,6 @@ fn mcp_tool_call_app_context_serializes_missing_mixed_version_fields_as_null() {
             "linkId": null,
             "resourceUri": null,
             "appName": null,
-            "templateId": null,
             "actionName": null,
         })
     );