feat: expand qdrant indexing and add actor-based queries

[Teagan42]

What

• document actor indexing and new query examples in AGENTS.md
• index actor names in Qdrant and store them in payloads
• add actor-movies server tool for filtering movies by actor and year
• test actor-based movie retrieval
• bump version to 0.4.6

Why

• support queries like "Find the newest movie with Tom Cruise" and "Suggest a movie from the 90's with Glenn Close"

Affects

• AGENTS.md
• mcp_plex/loader.py
• mcp_plex/server.py
• tests/test_server.py
• pyproject.toml
• uv.lock

Testing

• uv run ruff check .
• uv run pytest

Documentation

• Updated AGENTS.md with actor indexing and new example queries

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https://chatgpt.com/codex/tasks/task_e_68bfb020dc348328921da2402c278135

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mcp_plex
loader.py	194	16	92%	32–34, 304, 307–310, 355–364, 620, 626
server.py	216	22	90%	75, 93–94, 205–221, 432, 436, 456–460, 493
TOTAL	513	38	93%

Tests	Skipped	Failures	Errors	Time
21	0 💤	0 ❌	0 🔥	14.868s ⏱️