chore(deps): remove unused dependencies — httpx, fastapi, uvicorn, sounddevice, soundfile

[alfonsodg]

Problem

pyproject.toml declares dependencies that are never imported or used in the codebase:

Dependency	Declared in pyproject.toml	Actually used in code
httpx>=0.28.1	Yes	No — code uses requests everywhere
fastapi>=0.109.2	Yes	No — server uses mcp.server.fastmcp.FastMCP
uvicorn>=0.27.1	Yes	No — server runs via mcp.run()
sounddevice>=0.5.1	Yes	No — play() uses ffplay subprocess
soundfile>=0.13.1	Yes	No — audio is read as raw bytes

Evidence

$ grep -r "import httpx\|from httpx\|import fastapi\|from fastapi\|import uvicorn\|from uvicorn\|import sounddevice\|from sounddevice\|import soundfile\|from soundfile" minimax_mcp/
# (no results)

Impact

• Bloated install size (~150MB+ for unnecessary packages like scipy/numpy pulled by sounddevice)
• Slower pip install / uvx startup
• Potential dependency conflicts
• Confusing for contributors

Proposed solution

Remove from pyproject.toml dependencies:

dependencies = [
    "mcp[cli]>=1.6.0",
-   "fastapi>=0.109.2",
-   "uvicorn>=0.27.1",
    "python-dotenv>=1.0.1",
    "pydantic>=2.6.1",
-   "httpx>=0.28.1",
    "fuzzywuzzy>=0.18.0",
    "python-Levenshtein>=0.25.0",
-   "sounddevice>=0.5.1",
-   "soundfile>=0.13.1",
    "requests>=2.31.0",
]

If httpx is intended to replace requests in the future, create a separate issue for that migration.

Acceptance criteria

• Only actually-imported packages are in dependencies
• uvx minimax-mcp still works correctly
• Install size reduced significantly