fix: remove PartialPlexObject alias usage

[Teagan42]

What

• import plexapi.base.PlexPartialObject without exposing a PartialPlexObject alias in the loader package and update enrichment helpers to use the canonical name
• tighten the loader import test to ensure the alias is absent and refresh documentation references
• bump the project version to 1.0.5 and refresh the dependency manifests

Why

• ensures downstream code relies on the real Plex API class name and avoids reviving the deprecated alias

Affects

• loader module exports, enrichment type hints, loader unit test, and loader pipeline plan documentation

Testing

• uv run ruff check .
• uv run pytest

Documentation

• updated loader multiworker plan to reference PlexPartialObject

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https://chatgpt.com/codex/tasks/task_e_68e44b1da040832881ab7b32c228a5d0

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mcp_plex/loader
__init__.py	385	18	95%	81–88, 162, 252–257, 618, 733–735, 737, 823–842, 1195
mcp_plex/loader/pipeline
__init__.py	16	7	56%	57–62, 68
enrichment.py	438	60	86%	244, 249, 280, 282, 289, 293, 397, 418, 438, 446–448, 455–458, 461–463, 471, 534, 590, 613, 617, 619, 649, 667, 679, 708, 714, 717–725, 751, 754–756, 773–775, 795–798, 802, 816–822, 844, 846, 849–851
ingestion.py	105	11	90%	78, 127–147, 174, 203, 209, 240
orchestrator.py	92	5	95%	48, 126, 155, 178–179
persistence.py	129	9	93%	112, 154–155, 165, 176, 180–182, 231
mcp_plex/server
__init__.py	614	29	95%	43–44, 119–120, 148, 252, 256, 277–280, 297, 362, 365, 402, 420–421, 458, 1109, 1131–1137, 1173, 1191, 1196, 1214, 1338, 1375
__main__.py	4	4	0%	3–8
config.py	48	7	85%	50, 52–55, 65, 76
TOTAL	2100	150	93%

Tests	Skipped	Failures	Errors	Time
130	0 💤	0 ❌	0 🔥	52.819s ⏱️