cannot display version properly

[double12gzh]

1. Description

aigit cannot display version with -v/-version/--version

2. Version

git commit id: 8fdd3df

3. Reproduce

• example1

./aigit -version
Error: unknown shorthand flag: 'v' in -version
Usage:
  aigit [command]

Available Commands:
  auth        Manage LLM providers and API keys
  commit      Generate git commit message including title and body
  completion  Generate the autocompletion script for the specified shell
  help        Help about any command
  version     Print the version of aigit

Flags:
  -h, --help   help for aigit

Use "aigit [command] --help" for more information about a command.

unknown shorthand flag: 'v' in -version

• example2

./aigit --version
Error: unknown flag: --version
Usage:
  aigit [command]

Available Commands:
  auth        Manage LLM providers and API keys
  commit      Generate git commit message including title and body
  completion  Generate the autocompletion script for the specified shell
  help        Help about any command
  version     Print the version of aigit

Flags:
  -h, --help   help for aigit

Use "aigit [command] --help" for more information about a command.

unknown flag: --version

• example3

 ./aigit -v
Error: unknown shorthand flag: 'v' in -v
Usage:
  aigit [command]

Available Commands:
  auth        Manage LLM providers and API keys
  commit      Generate git commit message including title and body
  completion  Generate the autocompletion script for the specified shell
  help        Help about any command
  version     Print the version of aigit

Flags:
  -h, --help   help for aigit

Use "aigit [command] --help" for more information about a command.

unknown shorthand flag: 'v' in -v