fix(server): music_generation has inconsistent indentation — try block indented inside function body

Problem

The music_generation() function has its entire try block indented one extra level compared to all other tool functions. This is a style inconsistency that suggests a copy-paste error.

Exact location

• File: minimax_mcp/server.py
• Function: music_generation()

Evidence

def music_generation(...) -> TextContent:
        try:  # <-- extra indentation (8 spaces instead of 4)
            if not prompt:
                raise MinimaxRequestError("Prompt is required.")
            ...
        except MinimaxAPIError as e:
            return TextContent(
                type="text",
                text=f"Failed to generate music: {str(e)}"
            )
        except (IOError, requests.RequestException) as e:
            return TextContent(
                type="text",
                text=f"Failed to save music: {str(e)}"
        )  # <-- closing paren misaligned

Compare with text_to_audio():

def text_to_audio(...):
    if not text:  # <-- correct indentation (4 spaces)
        raise MinimaxRequestError("Text is required.")
    ...

Impact

• Code works but is confusing to read
• The misaligned closing paren on the last except could mask bugs
• Linters (ruff, flake8) would flag this

Proposed solution

Dedent the entire function body by one level to match other functions. Fix the misaligned closing paren.

Acceptance criteria

• music_generation() body indented at 4 spaces (same as all other functions)
• All closing parens properly aligned
• ruff check passes with no indentation warnings

Open minimax_mcp/server.py and inspect the music_generation() function alongside text_to_audio() for the expected indentation style. Run ruff check before and after the formatting change, and confirm the function body and closing parentheses match the stated acceptance criteria.