Refactor media library tooling into dedicated modules

[Teagan42]

Summary

• move media discovery helpers into mcp_plex.server.media and expose them across the server
• introduce mcp_plex.server.tools.media_library to register media tools, resources, and prompt
• adjust FastMCP server initialization and tests to use the new modules and re-export the expected interfaces

Testing

• uv run ruff check .
• uv run pytest

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https://chatgpt.com/codex/tasks/task_e_68e4ba55fa8483288a5206360c7dcfe1

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mcp_plex/common
validation.py	28	2	93%	37–38
mcp_plex/loader
__init__.py	374	17	95%	84–91, 165, 255–260, 662, 777–779, 781, 867–886
__main__.py	4	4	0%	2–8
imdb_cache.py	43	2	95%	59, 63
mcp_plex/loader/pipeline
channels.py	64	2	97%	134–135
enrichment.py	516	75	85%	237, 259–265, 318, 323, 354, 356, 363, 367, 471, 492, 512, 520–522, 525–527, 530–532, 540–545, 553, 607–608, 632, 692–693, 709, 738, 745, 747, 751, 803, 821, 833, 862, 868, 871–879, 905, 908–910, 927–929, 949–952, 956, 970–976, 998, 1000, 1003–1005
ingestion.py	155	13	92%	81, 130–150, 185, 222, 238, 331, 337, 357
orchestrator.py	95	5	95%	63, 141, 170, 193–194
persistence.py	130	9	93%	122, 164–165, 175, 186, 190–192, 245
mcp_plex/server
__init__.py	351	28	92%	55–56, 136–137, 185, 202, 240, 261–264, 278–281, 289, 363, 366, 404, 422–423, 461, 491, 509, 515, 533, 632–634, 638
__main__.py	4	4	0%	3–8
cli.py	62	1	98%	73
config.py	82	12	85%	58, 61–69, 76, 82, 102, 116
media.py	85	4	95%	62, 84–85, 95
mcp_plex/server/tools
media_library.py	289	11	96%	477, 760, 783–791
TOTAL	2601	189	93%

Tests	Skipped	Failures	Errors	Time
157	0 💤	0 ❌	0 🔥	1m 28s ⏱️