feat(docs): add initial documentation

  This commit introduces the initial documentation for the askCode.nvim plugin, generated from the Lua source code using `vimcats`. The documentation is provided
  in the doc/askcode.txt file, which is the standard format for Vim/Neovim help files.

Author: realEbi

doc/askcode.txt

@@ -0,0 +1,143 @@
+M.show_in_float()                                              *M.show_in_float*
+     Creates a floating window to show content.
+     @param content string The content to display.
+     @param on_close function A callback to execute when the window is closed.
+     @param editable boolean|nil Whether the window should be editable (default: false).
+     @param on_apply function|nil Callback for apply action (Q key) - receives edited content.
+     @return number, number The window ID and buffer ID.
+
+
+M.update_float()                                                *M.update_float*
+     Updates the content of a floating window.
+     @param win_id number The ID of the window to update.
+     @param buf_id number The ID of the buffer to update.
+     @param content string The new content.
+     @param replacement? boolean if the buffer is for replacement command
+     @param cursor_line number|nil Optional line number to position cursor (defaults to end).
+
+
+Config                                                                  *Config*
+
+    Fields: ~
+        {agent}          (string)
+        {debug}          (boolean)
+        {quit_key}       (string)
+        {output_format}  (string)
+        {window}         (table)
+
+
+M.default                                                            *M.default*
+
+    Type: ~
+        (Config)  config
+
+
+M.merge_with_default({changes?})                          *M.merge_with_default*
+     updates config
+
+    Parameters: ~
+        {changes?}  (Config)
+
+    Returns: ~
+        (Config)
+
+
+M.run_command()                                                  *M.run_command*
+     @return number|nil The job_id of the started process, or nil on error.
+
+
+Agent                                                                    *Agent*
+
+    Fields: ~
+        {prepare_command}  (function)
+        {parse_response}   (function)
+
+
+M.get_agent({name})                                                *M.get_agent*
+
+    Parameters: ~
+        {name}  (string)  The name of the agent to get.
+                          @return Agent? The agent module.
+
+
+M.setup()                                                              *M.setup*
+     Merges the given configuration with the default settings.
+     This function will be used to configure the agent in the future.
+     @param cfg table The configuration table to merge.
+
+
+M.prepare_command()                                          *M.prepare_command*
+     Prepares the shell command for sending a prompt to the AmazonQ CLI.
+     @param prompt string The prompt to be sent.
+     @return string The fully formed shell command.
+
+
+M.parse_response()                                            *M.parse_response*
+     Parses the response from the AmazonQ CLI.
+     @param response_string string The response string to parse.
+     @return string? The response, or nil if parsing fails.
+
+
+M.ask()                                                                  *M.ask*
+     Sends a prompt to the AmazonQ CLI and returns the response.
+     It uses a non-interactive mode by piping the prompt to the CLI.
+     @param prompt string The prompt to send to the AmazonQ CLI.
+     @return string? The response from the CLI, or nil if an error occurred.
+
+
+M.setup()                                                              *M.setup*
+     Merges the given configuration with the default settings.
+     This function will be used to configure the agent in the future.
+     @param cfg table The configuration table to merge.
+
+
+M.prepare_command()                                          *M.prepare_command*
+     Prepares the shell command for sending a prompt to the Gemini CLI.
+     @param prompt string The prompt to be sent.
+     @return string The fully formed shell command.
+
+
+M.parse_response()                                            *M.parse_response*
+     Parses the JSON response from the Gemini CLI.
+     @param json_string string The JSON string to parse.
+     @return string? The extracted response, or nil if parsing fails.
+
+
+M.ask()                                                                  *M.ask*
+     Sends a prompt to the Gemini CLI and returns the response.
+     It uses a non-interactive mode by piping the prompt to the CLI.
+     @param prompt string The prompt to send to the Gemini CLI.
+     @return string? The response from the CLI, or nil if an error occurred.
+
+
+M.setup({cfg?})                                                        *M.setup*
+     setup function
+
+    Parameters: ~
+        {cfg?}  (Config)
+
+
+M.ask()                                                                  *M.ask*
+     Starts a new conversation with an AI agent about selected code
+     Closes any existing conversation and creates a new floating window
+     @param question string The question to ask the AI agent
+     @param mode string The mode context (e.g., visual selection info)
+
+
+M.follow_up()                                                      *M.follow_up*
+     Continues an existing conversation with a follow-up question
+     Appends to the current conversation history and updates the display
+     @param question string The follow-up question to ask
+
+
+M.ask_replace()                                                  *M.ask_replace*
+     Starts a replacement conversation with an AI agent about selected code
+     Shows response in editable window with apply/cancel options
+     @param question string The question to ask the AI agent
+     @param mode string The mode context (e.g., visual selection info)
+
+
+M.ask_or_follow_up()                                        *M.ask_or_follow_up*
+
+
+vim:tw=78:ts=8:noet:ft=help:norl: