feat: Add short aliases for all CLI commands

This commit adds short, memorable aliases for frequently used commands,
improving CLI usability and reducing typing overhead.

New short aliases:
- v       → version
- c       → completion
- cf      → config
- m       → mcp
- Existing: d (doctor), u (upgrade), i (install), un (uninstall), l (launch)

All short aliases are hidden from the main help to keep the help output clean,
but they are fully functional and work with all their options.

Examples:
  cam v                 # Show version
  cam c bash            # Generate bash completion
  cam cf validate       # Validate configuration
  cam m server list     # List MCP servers
  cam d                 # Run diagnostic checks
  cam u all             # Upgrade all tools

This improves the developer experience by allowing faster command invocation
while maintaining a clean help interface for new users.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: jzhu

code_assistant_manager/cli/app.py

@@ -194,8 +194,10 @@ def command(
 app.add_typer(editor_app, name="l", hidden=True)
 # Add the config app as a subcommand to the main app
 app.add_typer(config_app, name="config")
+app.add_typer(config_app, name="cf", hidden=True)
 # Add the MCP app as a subcommand to the main app
 app.add_typer(mcp_app, name="mcp")
+app.add_typer(mcp_app, name="m", hidden=True)
 
 
 @config_app.command("validate")

code_assistant_manager/cli/commands.py

@@ -317,6 +317,12 @@ def version_command():
     raise typer.Exit()
 
 
+@app.command("v", hidden=True)
+def version_alias():
+    """Alias for 'version' command."""
+    return version_command()
+
+
 def install(
     ctx: Context,
     target: str = TARGET_OPTION,
@@ -631,6 +637,12 @@ def completion(shell: str = SHELL_OPTION):
     typer.echo(completion_script)
 
 
+@app.command("c", hidden=True)
+def completion_alias_short(shell: str = SHELL_OPTION):
+    """Alias for 'completion' command."""
+    return completion(shell)
+
+
 def generate_completion_script(shell: str) -> str:
     """Generate a comprehensive completion script for the given shell."""
     if shell == "bash":