use terminal CWD when sending paths

lua/claudecode/init.lua

@@ -1094,9 +1094,10 @@ end
 
 ---Format file path for at mention (exposed for testing)
 ---@param file_path string The file path to format
+---@param base_cwd string|nil Optional base working directory (defaults to Neovim's CWD)
 ---@return string formatted_path The formatted path
 ---@return boolean is_directory Whether the path is a directory
-function M._format_path_for_at_mention(file_path)
+function M._format_path_for_at_mention(file_path, base_cwd)
   -- Input validation
   if not file_path or type(file_path) ~= "string" or file_path == "" then
     error("format_path_for_at_mention: file_path must be a non-empty string")
@@ -1112,9 +1113,9 @@ function M._format_path_for_at_mention(file_path)
 
   local is_directory = vim.fn.isdirectory(file_path) == 1
   local formatted_path = file_path
+  local cwd = base_cwd or vim.fn.getcwd()
 
   if is_directory then
-    local cwd = vim.fn.getcwd()
     if string.find(file_path, cwd, 1, true) == 1 then
       local relative_path = string.sub(file_path, #cwd + 2)
       if relative_path ~= "" then
@@ -1127,7 +1128,6 @@ function M._format_path_for_at_mention(file_path)
       formatted_path = formatted_path .. "/"
     end
   else
-    local cwd = vim.fn.getcwd()
     if string.find(file_path, cwd, 1, true) == 1 then
       local relative_path = string.sub(file_path, #cwd + 2)
       if relative_path ~= "" then
@@ -1145,9 +1145,13 @@ function M._broadcast_at_mention(file_path, start_line, end_line)
     return false, "Claude Code integration is not running"
   end
 
+  -- Get terminal CWD for path formatting (falls back to Neovim CWD if nil)
+  local terminal = require("claudecode.terminal")
+  local terminal_cwd = terminal.get_terminal_cwd()
+
   -- Safely format the path and handle validation errors
   local formatted_path, is_directory
-  local format_success, format_result, is_dir_result = pcall(M._format_path_for_at_mention, file_path)
+  local format_success, format_result, is_dir_result = pcall(M._format_path_for_at_mention, file_path, terminal_cwd)
   if not format_success then
     return false, format_result -- format_result contains the error message
   end

lua/claudecode/terminal.lua

@@ -6,6 +6,9 @@ local M = {}
 
 local claudecode_server_module = require("claudecode.server.init")
 
+-- Cache the terminal's working directory (set when terminal is opened)
+local last_terminal_cwd = nil
+
 ---@type ClaudeCodeTerminalConfig
 local defaults = {
   split_side = "right",
@@ -498,6 +501,7 @@ end
 ---@param cmd_args string? Arguments to append to the claude command.
 function M.open(opts_override, cmd_args)
   local effective_config = build_config(opts_override)
+  last_terminal_cwd = effective_config.cwd
   local cmd_string, claude_env_table = get_claude_command_and_env(cmd_args)
 
   get_provider().open(cmd_string, claude_env_table, effective_config)
@@ -513,6 +517,7 @@ end
 ---@param cmd_args string? Arguments to append to the claude command.
 function M.simple_toggle(opts_override, cmd_args)
   local effective_config = build_config(opts_override)
+  last_terminal_cwd = effective_config.cwd
   local cmd_string, claude_env_table = get_claude_command_and_env(cmd_args)
 
   get_provider().simple_toggle(cmd_string, claude_env_table, effective_config)
@@ -523,6 +528,7 @@ end
 ---@param cmd_args string|nil (optional) Arguments to append to the claude command.
 function M.focus_toggle(opts_override, cmd_args)
   local effective_config = build_config(opts_override)
+  last_terminal_cwd = effective_config.cwd
   local cmd_string, claude_env_table = get_claude_command_and_env(cmd_args)
 
   get_provider().focus_toggle(cmd_string, claude_env_table, effective_config)
@@ -569,4 +575,11 @@ function M._get_managed_terminal_for_test()
   return nil
 end
 
+---Gets the cached terminal working directory.
+---This returns the CWD that was resolved when the terminal was opened.
+---@return string|nil The terminal's working directory, or nil if no terminal has been opened.
+function M.get_terminal_cwd()
+  return last_terminal_cwd
+end
+
 return M

tests/unit/at_mention_edge_cases_spec.lua

@@ -326,4 +326,56 @@ describe("At Mention Edge Cases", function()
       assert_contains(result, "file.lua")
     end)
   end)
+
+  describe("custom base_cwd parameter", function()
+    it("should use custom base_cwd when provided", function()
+      mock_vim.fn.filereadable = function(path)
+        return path == "/git/repo/src/main.lua" and 1 or 0
+      end
+
+      -- Default behavior uses vim.fn.getcwd() which returns /Users/test/project
+      local result_default = init_module._format_path_for_at_mention("/git/repo/src/main.lua")
+      expect(result_default).to_be("/git/repo/src/main.lua") -- Not relative to /Users/test/project
+
+      -- With custom base_cwd, should be relative to /git/repo
+      local result_custom = init_module._format_path_for_at_mention("/git/repo/src/main.lua", "/git/repo")
+      expect(result_custom).to_be("src/main.lua")
+    end)
+
+    it("should use custom base_cwd for directories", function()
+      mock_vim.fn.isdirectory = function(path)
+        return path == "/git/repo/src" and 1 or 0
+      end
+      mock_vim.fn.filereadable = function()
+        return 0
+      end
+
+      -- With custom base_cwd, directory should be relative
+      local result_custom = init_module._format_path_for_at_mention("/git/repo/src", "/git/repo")
+      expect(result_custom).to_be("src/")
+    end)
+
+    it("should fall back to vim.fn.getcwd() when base_cwd is nil", function()
+      mock_vim.fn.filereadable = function(path)
+        return path == "/Users/test/project/config.lua" and 1 or 0
+      end
+
+      -- When base_cwd is nil, should use vim.fn.getcwd()
+      local result = init_module._format_path_for_at_mention("/Users/test/project/config.lua", nil)
+      expect(result).to_be("config.lua") -- Relative to /Users/test/project (getcwd)
+    end)
+
+    it("should handle root directory with custom base_cwd", function()
+      mock_vim.fn.isdirectory = function(path)
+        return path == "/git/repo" and 1 or 0
+      end
+      mock_vim.fn.filereadable = function()
+        return 0
+      end
+
+      -- Path is exactly the base_cwd
+      local result = init_module._format_path_for_at_mention("/git/repo", "/git/repo")
+      expect(result).to_be("./")
+    end)
+  end)
 end)