feat: expand loader pipeline logging instrumentation

[Teagan42]

What

• add detailed lifecycle logging across the loader orchestrator and ingestion, enrichment, and persistence stages
• extend loader logging tests to assert the new instrumentation and cover additional ingestion stage messages
• bump the project version to 1.0.2 to capture the new logging capabilities

Why

• richer pipeline visibility makes it easier to diagnose why staged loads finish without producing items

Affects

• loader pipeline logging, associated unit tests, and version metadata for release tracking

Testing

• uv run ruff check .
• uv run pytest

Documentation

• not required for logging-only changes

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https://chatgpt.com/codex/tasks/task_e_68e37b7c5a288328825b73120f288668

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mcp_plex/loader
__init__.py	388	18	95%	84–91, 165, 255–260, 621, 736–738, 740, 826–845, 1198
mcp_plex/loader/pipeline
__init__.py	16	7	56%	57–62, 68
channels.py	59	2	97%	20–21
enrichment.py	439	60	86%	248, 253, 284, 286, 293, 297, 401, 422, 442, 450–452, 459–462, 465–467, 475, 538, 594, 617, 621, 623, 653, 671, 683, 712, 718, 721–729, 755, 758–760, 777–779, 799–802, 806, 820–826, 848, 850, 853–855
ingestion.py	103	11	89%	74, 123–143, 169, 200, 206, 237
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	2103	152	93%

Tests	Skipped	Failures	Errors	Time
130	0 💤	0 ❌	0 🔥	48.618s ⏱️