feat(adapters): add kilocode ACP adapter

Add a new ACP adapter implementation for Kilo Code at
lua/codecompanion/adapters/acp/kilocode.lua.

- Registers adapter metadata (name, formatted_name, type, roles).
- Enables vision option and sets default command ("kilo acp").
- Adds sensible defaults: empty mcpServers and 20s timeout.
- Supplies adapter parameters (protocolVersion, clientCapabilities,
  clientInfo).
- Implements basic handlers: setup, auth (always succeeds),
  form_messages (delegates to acp.helpers), and noop on_exit.

Author: Alejandro Claro

doc/configuration/adapters-acp.md

@@ -397,3 +397,19 @@ You can specify a custom model in your `~/.config/opencode/config.json` file:
 }
 ```
 
+## Setup: Kilo Code
+
+To use [Kilo Code](https://kilo.ai) in CodeCompanion, ensure you've followed
+their documentation to
+[install](https://kilo.ai/docs/getting-started/installing#cli) and
+[configure](https://kilo.ai/docs/getting-started/setup-authentication#cli) it. Then ensure that in your
+chat buffer you select the `kilocode` adapter.
+
+You can specify a custom model in your `~/.config/kilo/kilo.json` file:
+
+```json
+{
+    "$schema": "https://kilo.ai/config.json",
+    "model": "kilo/kilo-auto/free",
+}
+```

lua/codecompanion/adapters/acp/kilocode.lua

@@ -0,0 +1,62 @@
+local helpers = require("codecompanion.adapters.acp.helpers")
+
+---@class CodeCompanion.ACPAdapter.KiloCode: CodeCompanion.ACPAdapter
+return {
+  name = "kilocode",
+  formatted_name = "Kilo Code",
+  type = "acp",
+  roles = {
+    llm = "assistant",
+    user = "user",
+  },
+  opts = {
+    vision = true,
+  },
+  commands = {
+    default = {
+      "kilo",
+      "acp",
+    },
+  },
+  defaults = {
+    mcpServers = {},
+    timeout = 20000, -- 20 seconds
+  },
+  parameters = {
+    protocolVersion = 1,
+    clientCapabilities = {
+      fs = { readTextFile = true, writeTextFile = true },
+    },
+    clientInfo = {
+      name = "CodeCompanion.nvim",
+      version = "1.0.0",
+    },
+  },
+  handlers = {
+    ---@param self CodeCompanion.ACPAdapter
+    ---@return boolean
+    setup = function(self)
+      return true
+    end,
+
+    ---@param self CodeCompanion.ACPAdapter
+    ---@return boolean
+    auth = function(self)
+      -- Declaring auth a success
+      return true
+    end,
+
+    ---@param self CodeCompanion.ACPAdapter
+    ---@param messages table
+    ---@param capabilities table
+    ---@return table
+    form_messages = function(self, messages, capabilities)
+      return helpers.form_messages(self, messages, capabilities)
+    end,
+
+    ---@param self CodeCompanion.ACPAdapter
+    ---@param code number
+    ---@return nil
+    on_exit = function(self, code) end,
+  },
+}