fix: derive qdrant model params without private api

[Teagan42]

What

• add a supported mapping of Qdrant dense embedding models to size/distance pairs and use it in the loader
• raise a clear error when an unknown model is requested and document the approach in AGENTS.md
• expand loader tests to exercise the mapping and the unknown-model failure path while bumping the project version

Why

• qdrant-client dropped the private _get_model_params helper, so the loader needs a supported replacement and explicit failure handling

Affects

• server-side embedding configuration in the loader and its associated tests

Testing

• uv run ruff check .
• uv run pytest

Documentation

• updated AGENTS.md with the new loader strategy

---

https://chatgpt.com/codex/tasks/task_e_68d2ae182bf48328b5cc54495f652009

[Copilot]

Pull Request Overview

This PR removes dependency on a private Qdrant client API by implementing local model parameter mapping. The change replaces the removed _get_model_params helper with a supported dictionary mapping of dense embedding models to their vector dimensions and distance metrics.

• Add local mapping of Qdrant dense embedding models to size/distance parameters
• Replace private API call with explicit model parameter resolution
• Add error handling for unknown models with clear documentation guidance

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
mcp_plex/loader.py	Adds model parameter mapping and resolution function, removes private API usage
tests/test_loader_unit.py	Tests the new model parameter resolution function for both known and unknown models
tests/test_loader_integration.py	Integration test for unknown model error handling
AGENTS.md	Documents the new approach for model metadata tracking
pyproject.toml	Version bump

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 5 out of 6 changed files in this pull request and generated no new comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mcp_plex
loader.py	392	24	94%	118, 147–151, 153–162, 173, 175–177, 213, 615–617
server.py	318	21	93%	107–108, 231, 459, 463, 485–491, 523, 533, 564–565, 582–583, 606, 609–610, 657, 694
TOTAL	891	45	95%

Tests	Skipped	Failures	Errors	Time
66	0 💤	0 ❌	0 🔥	33.602s ⏱️