Fix lifespan context handling for SSE connections

[Teagan42]

What

• replace the PlexServer lifespan generator with an explicit async context manager that always calls close
• extend the lifespan test to assert that the server close hook executes
• bump the package version to 0.26.30 and refresh the lock file

Why

• the SSE endpoint crashed because the prior lifespan implementation returned an async generator that is not a valid async context manager for FastMCP

Affects

• mcp_plex.server
• tests/test_server.py
• packaging metadata

Testing

• uv run ruff check .
• uv run pytest

Documentation

• Not needed

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https://chatgpt.com/codex/tasks/task_e_68db9320b4908328a482d0fde3af9933

[Copilot]

Pull Request Overview

This PR fixes a critical bug in the SSE endpoint by replacing an invalid async generator lifespan implementation with a proper async context manager that ensures the server's close method is always called.

• Replaced the PlexServer lifespan generator with an explicit async context manager class
• Enhanced the lifespan test to verify that the server close hook executes properly
• Bumped package version to 0.26.30

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.

File	Description
mcp_plex/server.py	Replaced async generator with proper async context manager implementation
tests/test_server.py	Added assertion to verify server close hook execution
pyproject.toml	Version bump to 0.26.30

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[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mcp_plex
loader.py	417	28	93%	70, 73–74, 150, 179–183, 185–194, 205, 207–209, 225, 251, 652–654
server.py	321	21	93%	112–113, 236, 464, 468, 490–496, 528, 538, 569–570, 587–588, 611, 614–615, 662, 699
TOTAL	919	49	95%

Tests	Skipped	Failures	Errors	Time
66	0 💤	0 ❌	0 🔥	37.680s ⏱️