implement Connection flag parsing

add Shell Completion section to README

patch bump

README.md

@@ -10,6 +10,9 @@
 ## Table of Contents
 
 - [Installation](#installation)
+- [Configuration](#configuration)
+- [Use](#use)
+- [Shell Completion](#shell-completion)
 - [License](#license)
 
 ## Installation
@@ -83,6 +86,14 @@ Usage: q3rcon-cli [OPTIONS] COMMAND
 ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
 ```
 
+## Shell Completion
+
+Shell completion scripts are available for *bash*, *zsh*, and *fish*.
+
+```console
+q3rcon-cli --install-autocomplete
+```
+
 ## Special Thanks
 
 - [lapetus-11](https://github.com/Iapetus-11) for writing the [aio-q3-rcon](https://github.com/Iapetus-11/aio-q3-rcon) package.

src/q3rcon_cli/__about__.py

@@ -1,4 +1,4 @@
 # SPDX-FileCopyrightText: 2026-present onyx-and-iris <code@onyxandiris.online>
 #
 # SPDX-License-Identifier: MIT
-__version__ = '0.3.2'
+__version__ = '0.3.3'

src/q3rcon_cli/cli.py

@@ -1,6 +1,7 @@
 import clypi
 from aioq3rcon import Client, IncorrectPasswordError
 from clypi import Command, Spinner, arg
+from clypi import parsers as cp
 from typing_extensions import override
 
 from . import console
@@ -38,6 +39,7 @@ class Q3rconCli(Command):
         help='The host to connect to',
         env='Q3RCON_CLI_HOST',
         group='Connection',
+        parser=cp.Str(min=1),
     )
     port: int = arg(
         28960,
@@ -45,6 +47,7 @@ class Q3rconCli(Command):
         help='The port to connect to',
         env='Q3RCON_CLI_PORT',
         group='Connection',
+        parser=cp.Int(min=1, max=65535),
     )
     password: str = arg(
         '',
@@ -52,6 +55,7 @@ class Q3rconCli(Command):
         help='The password for authentication',
         env='Q3RCON_CLI_PASSWORD',
         group='Connection',
+        parser=cp.Str(min=8),
     )
     interactive: bool = arg(
         False,