fix(tool-runtime): Remove authorization from list_runtime_tools()

The authorization parameter should only be on invoke_tool(), not on
list_runtime_tools(). Tool listing typically doesn't require authentication,
and the client SDK doesn't have this parameter yet.

Changes:
1. Removed authorization parameter from ToolRuntime.list_runtime_tools() protocol method
2. Updated all implementations to remove the authorization parameter:
   - MCPProviderImpl.list_runtime_tools()
   - ToolRuntimeRouter.list_runtime_tools()
   - ToolGroupsRoutingTable.list_tools() and _index_tools()
3. Updated test to remove authorization from list_tools() call

This ensures compatibility with the llama-stack-client SDK which doesn't
support authorization on list_tools() yet. Only invoke_tool() requires
and accepts the authorization parameter for authenticated tool execution.

src/llama_stack/apis/tools/tools.py

@@ -199,13 +199,11 @@ class ToolRuntime(Protocol):
         self,
         tool_group_id: str | None = None,
         mcp_endpoint: URL | None = None,
-        authorization: str | None = None,
     ) -> ListToolDefsResponse:
         """List all tools in the runtime.
 
         :param tool_group_id: The ID of the tool group to list tools for.
         :param mcp_endpoint: The MCP endpoint to use for the tool group.
-        :param authorization: (Optional) OAuth access token for authenticating with the MCP server.
         :returns: A ListToolDefsResponse.
         """
         ...

src/llama_stack/core/routers/tool_runtime.py

@@ -46,7 +46,6 @@ class ToolRuntimeRouter(ToolRuntime):
         )
 
     async def list_runtime_tools(
-        self, tool_group_id: str | None = None, mcp_endpoint: URL | None = None, authorization: str | None = None
+        self, tool_group_id: str | None = None, mcp_endpoint: URL | None = None
     ) -> ListToolDefsResponse:
-        logger.debug(f"ToolRuntimeRouter.list_runtime_tools: {tool_group_id}")
-        return await self.routing_table.list_tools(tool_group_id, authorization=authorization)
+        return await self.routing_table.list_tools(tool_group_id)

src/llama_stack/core/routing_tables/toolgroups.py

@@ -43,7 +43,7 @@ class ToolGroupsRoutingTable(CommonRoutingTableImpl, ToolGroups):
             routing_key = self.tool_to_toolgroup[routing_key]
         return await super().get_provider_impl(routing_key, provider_id)
 
-    async def list_tools(self, toolgroup_id: str | None = None, authorization: str | None = None) -> ListToolDefsResponse:
+    async def list_tools(self, toolgroup_id: str | None = None) -> ListToolDefsResponse:
         if toolgroup_id:
             if group_id := parse_toolgroup_from_toolgroup_name_pair(toolgroup_id):
                 toolgroup_id = group_id
@@ -55,7 +55,7 @@ class ToolGroupsRoutingTable(CommonRoutingTableImpl, ToolGroups):
         for toolgroup in toolgroups:
             if toolgroup.identifier not in self.toolgroups_to_tools:
                 try:
-                    await self._index_tools(toolgroup, authorization=authorization)
+                    await self._index_tools(toolgroup)
                 except AuthenticationRequiredError:
                     # Send authentication errors back to the client so it knows
                     # that it needs to supply credentials for remote MCP servers.
@@ -70,10 +70,10 @@ class ToolGroupsRoutingTable(CommonRoutingTableImpl, ToolGroups):
 
         return ListToolDefsResponse(data=all_tools)
 
-    async def _index_tools(self, toolgroup: ToolGroup, authorization: str | None = None):
+    async def _index_tools(self, toolgroup: ToolGroup):
         provider_impl = await super().get_provider_impl(toolgroup.identifier, toolgroup.provider_id)
         tooldefs_response = await provider_impl.list_runtime_tools(
-            toolgroup.identifier, toolgroup.mcp_endpoint, authorization=authorization
+            toolgroup.identifier, toolgroup.mcp_endpoint
         )
 
         tooldefs = tooldefs_response.data

src/llama_stack/providers/remote/tool_runtime/model_context_protocol/model_context_protocol.py

@@ -44,15 +44,14 @@ class ModelContextProtocolToolRuntimeImpl(
         self,
         tool_group_id: str | None = None,
         mcp_endpoint: URL | None = None,
-        authorization: str | None = None,
     ) -> ListToolDefsResponse:
         # this endpoint should be retrieved by getting the tool group right?
         if mcp_endpoint is None:
             raise ValueError("mcp_endpoint is required")
-        # Authorization now comes from request body parameter (not provider-data)
+        # MCP tool listing typically doesn't require authorization
         headers = {}
         return await list_mcp_tools(
-            endpoint=mcp_endpoint.uri, headers=headers, authorization=authorization
+            endpoint=mcp_endpoint.uri, headers=headers, authorization=None
         )
 
     async def invoke_tool(