feat: add "none" terminal provider option for external terminal management

Change-Id: I92e2074200ee47e6753cf929d428a29d2564eb31
Signed-off-by: Thomas Kosiewski <tk@coder.com>

Author: ThomasK33

README.md

@@ -261,7 +261,7 @@ For deep technical details, see [ARCHITECTURE.md](./ARCHITECTURE.md).
     terminal = {
       split_side = "right", -- "left" or "right"
       split_width_percentage = 0.30,
-      provider = "auto", -- "auto", "snacks", "native", "external", or custom provider table
+      provider = "auto", -- "auto", "snacks", "native", "external", "none", or custom provider table
       auto_close = true,
       snacks_win_opts = {}, -- Opts to pass to `Snacks.terminal.open()` - see Floating Window section below
 
@@ -488,6 +488,26 @@ For complete configuration options, see:
 
 ## Terminal Providers
 
+### None (No-Op) Provider
+
+Run Claude Code without any terminal management inside Neovim. This is useful for advanced setups where you manage the CLI externally (tmux, kitty, separate terminal windows) while still using the WebSocket server and tools.
+
+```lua
+{
+  "coder/claudecode.nvim",
+  opts = {
+    terminal = {
+      provider = "none", -- no UI actions; server + tools remain available
+    },
+  },
+}
+```
+
+Notes:
+
+- No windows/buffers are created. `:ClaudeCode` and related commands will not open anything.
+- The WebSocket server still starts and broadcasts work as usual. Launch the Claude CLI externally when desired.
+
 ### External Terminal Provider
 
 Run Claude Code in a separate terminal application outside of Neovim:

lua/claudecode/terminal.lua

@@ -166,6 +166,14 @@ local function get_provider()
   elseif defaults.provider == "native" then
     -- noop, will use native provider as default below
     logger.debug("terminal", "Using native terminal provider")
+  elseif defaults.provider == "none" then
+    local none_provider = load_provider("none")
+    if none_provider then
+      logger.debug("terminal", "Using no-op terminal provider ('none')")
+      return none_provider
+    else
+      logger.warn("terminal", "'none' provider configured but failed to load. Falling back to 'native'.")
+    end
   elseif type(defaults.provider) == "string" then
     logger.warn(
       "terminal",
@@ -394,7 +402,7 @@ function M.setup(user_term_config, p_terminal_cmd, p_env)
         )
       end
     elseif k == "provider" then
-      if type(v) == "table" or v == "snacks" or v == "native" or v == "external" or v == "auto" then
+      if type(v) == "table" or v == "snacks" or v == "native" or v == "external" or v == "auto" or v == "none" then
         defaults.provider = v
       else
         vim.notify(

lua/claudecode/terminal/none.lua

@@ -0,0 +1,74 @@
+--- No-op terminal provider for Claude Code.
+--- Performs zero UI actions and never manages terminals inside Neovim.
+---@module 'claudecode.terminal.none'
+
+---@type ClaudeCodeTerminalProvider
+local M = {}
+
+---Stored config (not used, but kept for parity with other providers)
+---Setup the no-op provider
+---@param term_config ClaudeCodeTerminalConfig
+function M.setup(term_config)
+  -- intentionally no-op
+end
+
+---Open terminal (no-op)
+---@param cmd_string string
+---@param env_table table
+---@param effective_config ClaudeCodeTerminalConfig
+---@param focus boolean|nil
+function M.open(cmd_string, env_table, effective_config, focus)
+  -- intentionally no-op
+end
+
+---Close terminal (no-op)
+function M.close()
+  -- intentionally no-op
+end
+
+---Simple toggle (no-op)
+---@param cmd_string string
+---@param env_table table
+---@param effective_config ClaudeCodeTerminalConfig
+function M.simple_toggle(cmd_string, env_table, effective_config)
+  -- intentionally no-op
+end
+
+---Focus toggle (no-op)
+---@param cmd_string string
+---@param env_table table
+---@param effective_config ClaudeCodeTerminalConfig
+function M.focus_toggle(cmd_string, env_table, effective_config)
+  -- intentionally no-op
+end
+
+---Legacy toggle (no-op)
+---@param cmd_string string
+---@param env_table table
+---@param effective_config ClaudeCodeTerminalConfig
+function M.toggle(cmd_string, env_table, effective_config)
+  -- intentionally no-op
+end
+
+---Ensure visible (no-op)
+function M.ensure_visible() end
+
+---Return active buffer number (always nil)
+---@return number|nil
+function M.get_active_bufnr()
+  return nil
+end
+
+---Provider availability (always true; explicit opt-in required)
+---@return boolean
+function M.is_available()
+  return true
+end
+
+---Testing hook (no state to return)
+---@return table|nil
+function M._get_terminal_for_test()
+  return nil
+end
+
+return M

lua/claudecode/types.lua

@@ -39,11 +39,11 @@
 ---@alias ClaudeCodeSplitSide "left"|"right"
 
 -- In-tree terminal provider names
----@alias ClaudeCodeTerminalProviderName "auto"|"snacks"|"native"|"external"
+---@alias ClaudeCodeTerminalProviderName "auto"|"snacks"|"native"|"external"|"none"
 
 -- Terminal provider-specific options
 ---@class ClaudeCodeTerminalProviderOptions
----@field external_terminal_cmd string|fun(cmd: string, env: table): string|table|nil Command for external terminal (string template with %s or function)
+---@field external_terminal_cmd string|(fun(cmd: string, env: table): string)|table|nil Command for external terminal (string template with %s or function)
 
 -- Working directory resolution context and provider
 ---@class ClaudeCodeCwdContext

tests/unit/terminal/none_provider_spec.lua

@@ -0,0 +1,70 @@
+require("tests.busted_setup")
+require("tests.mocks.vim")
+
+describe("none terminal provider", function()
+  local terminal
+
+  local termopen_calls
+  local jobstart_calls
+
+  before_each(function()
+    -- Prepare vim.fn helpers used by terminal module
+    vim.fn = vim.fn or {}
+    vim.fn.getcwd = function()
+      return "/mock/cwd"
+    end
+    vim.fn.expand = function(val)
+      return val
+    end
+
+    -- Spy-able termopen/jobstart that count invocations
+    termopen_calls = 0
+    jobstart_calls = 0
+    vim.fn.termopen = function(...)
+      termopen_calls = termopen_calls + 1
+      return 1
+    end
+    vim.fn.jobstart = function(...)
+      jobstart_calls = jobstart_calls + 1
+      return 1
+    end
+
+    -- Minimal logger + server mocks
+    package.loaded["claudecode.logger"] = {
+      debug = function() end,
+      warn = function() end,
+      error = function() end,
+      info = function() end,
+      setup = function() end,
+    }
+    package.loaded["claudecode.server.init"] = { state = { port = 12345 } }
+
+    -- Ensure fresh terminal module load
+    package.loaded["claudecode.terminal"] = nil
+    package.loaded["claudecode.terminal.none"] = nil
+    package.loaded["claudecode.terminal.native"] = nil
+    package.loaded["claudecode.terminal.snacks"] = nil
+
+    terminal = require("claudecode.terminal")
+    terminal.setup({ provider = "none" }, nil, {})
+  end)
+
+  it("does not invoke any terminal APIs", function()
+    -- Exercise all public actions
+    terminal.open({}, "--help")
+    terminal.simple_toggle({}, "--resume")
+    terminal.focus_toggle({}, "--continue")
+    terminal.ensure_visible({}, nil)
+    terminal.toggle_open_no_focus({}, nil)
+    terminal.close()
+
+    -- Assert no terminal processes/windows were spawned
+    assert.are.equal(0, termopen_calls)
+    assert.are.equal(0, jobstart_calls)
+  end)
+
+  it("returns nil for active buffer", function()
+    local bufnr = terminal.get_active_terminal_bufnr()
+    assert.is_nil(bufnr)
+  end)
+end)