[WIP] [Bug]: Error when set show_settings = true and adapter = "gemini_cli" (ACP adapter

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Original issue description:

Pre-submission checklist

• I have read the documentation
• I have updated the plugin and all dependencies to the latest versions
• I have searched for existing issues and discussions
• My issue is not a minor or cosmetic quirk (e.g., formatting, spacing, or other non-functional details)

Neovim version (nvim -v)

0.12.0 commit 3c601d02dc

Operating system/version

Arch Linux x86_64

Adapter and model

gemini_cli

Describe the bug

When I set display > chat > show_settings = true, strategies > chat > adapter = "gemini_cli" and open a sidebar chat window, It throws error message below:

Lua :command callback: ...vim/lazy/codecompanion.nvim/lua/codecompanion/schema.lua:122: bad argument #1 to 'pairs' (table expected, got nil)
stack traceback:
	[C]: in function 'pairs'
	...vim/lazy/codecompanion.nvim/lua/codecompanion/schema.lua:122: in function 'get_ordered_keys'
	...anion.nvim/lua/codecompanion/strategies/chat/ui/init.lua:322: in function 'render'
	...ompanion.nvim/lua/codecompanion/strategies/chat/init.lua:663: in function 'chat'
	...m/lazy/codecompanion.nvim/lua/codecompanion/commands.lua:131: in function <...m/lazy/codecompanion.nvim/lua/codecompanion/commands.lua:130>

Steps to reproduce

1. Set display > chat > show_settings = true and strategies > chat > adapter = "gemini_cli"
2. Open Nvim, then run command :CodeCompanionChat
3. The error shows up, sidebar chat window not working.

Expected behavior

Sidebar chat window shows up without error.

Screenshots or recordings (optional)

codecompanion_error.mp4

minimal.lua file

---@diagnostic disable: missing-fields

--[[
NOTE: Set the config path to enable the copilot adapter to work.
It will search the following paths for a token:
  - "$CODECOMPANION_TOKEN_PATH/github-copilot/hosts.json"
  - "$CODECOMPANION_TOKEN_PATH/github-copilot/apps.json"
--]]
vim.env["CODECOMPANION_TOKEN_PATH"] = vim.fn.expand("~/.config")

vim.env.LAZY_STDPATH = ".repro"
load(vim.fn.system("curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua"))()

-- Your CodeCompanion setup
local plugins = {
	{
		"olimorris/codecompanion.nvim",
		dependencies = {
			{ "nvim-treesitter/nvim-treesitter", build = ":TSUpdate" },
			{ "nvim-lua/plenary.nvim" },
			-- Test with blink.cmp (delete if not required)
			{
				"saghen/blink.cmp",
				lazy = false,
				version = "*",
				opts = {
					keymap = {
						preset = "enter",
						["<S-Tab>"] = { "select_prev", "fallback" },
						["<Tab>"] = { "select_next", "fallback" },
					},
					cmdline = { sources = { "cmdline" } },
					sources = {
						default = { "lsp", "path", "buffer", "codecompanion" },
					},
				},
			},
			-- Test with nvim-cmp
			-- { "hrsh7th/nvim-cmp" },
		},
		opts = {
			adapter = {
				acp = {
					gemini_cli = function()
						return require("codecompanion.adapters").extend("gemini_cli", {
							env = {
								api_key = "GEMINI_API_KEY",
							},
						})
					end,
				},
			},
			display = {
				chat = {
					intro_message = "Welcome to CodeCompanion ✨!\n Press ? for options",
					separator = "─", -- The separator between the different messages in the chat buffer
					show_context = true, -- Show context (from slash commands and variables) in the chat buffer?
					show_header_separator = false, -- Show header separators in the chat buffer? Set this to false if you're using an external markdown formatting plugin
					show_settings = true, -- Show LLM settings at the top of the chat buffer?
					show_token_count = true, -- Show the token count for each response?
					show_tools_processing = true, -- Show the loading message when tools are being executed?
					start_in_insert_mode = false, -- Open the chat buffer in insert mode?
				},
			},
			--Refer to: https://github.com/olimorris/codecompanion.nvim/blob/main/lua/codecompanion/config.lua
			strategies = {
				--NOTE: Change the adapter as required
				chat = { adapter = "gemini_cli" },
				inline = { adapter = "gemini_cli" },
			},
			opts = {
				log_level = "DEBUG",
			},
		},
	},
}

-- Leaving this comment in to see if the issue author notices ;-)
-- This is so I can tell if they've really tested with their own minimal.lua file

require("lazy.minit").repro({ spec = plugins })

-- Setup Tree-sitter
local ts_status, treesitter = pcall(require, "nvim-treesitter.configs")
if ts_status then
	treesitter.setup({
		ensure_installed = { "lua", "markdown", "markdown_inline", "yaml", "diff" },
		highlight = { enable = true },
	})
end

-- Setup nvim-cmp
-- local cmp_status, cmp = pcall(require, "cmp")
-- if cmp_status then
--   cmp.setup({
--     mapping = cmp.mapping.preset.insert({
--       ["<C-b>"] = cmp.mapping.scroll_docs(-4),
--       ["<C-f>"] = cmp.mapping.scroll_docs(4),
--       ["<C-Space>"] = cmp.mapping.complete(),
--       ["<C-e>"] = cmp.mapping.abort(),
--       ["<CR>"] = cmp.mapping.confirm({ select = true }),
--       -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
--     }),
--   })
-- end

Log output (optional)

Don't see any codecompanion.log file.

Minimal reproduction confirmation

• Yes, I have tested and provided a minimal.lua file that reproduces the issue

Fixes #2062.

---

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