feat: supports OpenAI Response API and copilot's gpt-5-codex model (#2802)

* fix: upgrade vscode version

* feat: support openai response api

* refactor: refine todos tools

* fix: trim suffix empty lines

lua/avante/llm_tools/write_todos.lua

@@ -0,0 +1,82 @@
+local Base = require("avante.llm_tools.base")
+
+---@class AvanteLLMTool
+local M = setmetatable({}, Base)
+
+M.name = "write_todos"
+
+M.description = "Write TODOs to the current task"
+
+---@type AvanteLLMToolParam
+M.param = {
+  type = "table",
+  fields = {
+    {
+      name = "todos",
+      description = "The entire TODOs array to write",
+      type = "array",
+      items = {
+        name = "items",
+        type = "object",
+        fields = {
+          {
+            name = "id",
+            description = "The ID of the TODO",
+            type = "string",
+          },
+          {
+            name = "content",
+            description = "The content of the TODO",
+            type = "string",
+          },
+          {
+            name = "status",
+            description = "The status of the TODO",
+            type = "string",
+            choices = { "todo", "doing", "done", "cancelled" },
+          },
+          {
+            name = "priority",
+            description = "The priority of the TODO",
+            type = "string",
+            choices = { "low", "medium", "high" },
+          },
+        },
+      },
+    },
+  },
+}
+
+---@type AvanteLLMToolReturn[]
+M.returns = {
+  {
+    name = "success",
+    description = "Whether the TODOs were added successfully",
+    type = "boolean",
+  },
+  {
+    name = "error",
+    description = "Error message if the TODOs could not be updated",
+    type = "string",
+    optional = true,
+  },
+}
+
+M.on_render = function() return {} end
+
+---@type AvanteLLMToolFunc<{ todos: avante.TODO[] }>
+function M.func(input, opts)
+  local on_complete = opts.on_complete
+  local sidebar = require("avante").get()
+  if not sidebar then return false, "Avante sidebar not found" end
+  local todos = input.todos
+  if not todos or #todos == 0 then return false, "No todos provided" end
+  sidebar:update_todos(todos)
+  if on_complete then
+    on_complete(true, nil)
+    return nil, nil
+  end
+  return true, nil
+end
+
+return M