AP-24074: Add authenticator for Mistral AI API

[ya-hn]

No description provided.

[ya-hn]

This function gets updated in the PR for the LLM Selector to filter out duplicate model IDs.

[Copilot]

Pull request overview

Introduces a new Mistral AI provider module that registers a KNIME node to create an authentication port object for the Mistral AI API, and wires the module into the main extension entrypoint.

Changes:

• Added models.mistral package with category/icon setup and a Mistral AI Authenticator node emitting a dedicated authentication port type.
• Registered the new provider by importing models.mistral in src/knime_llm.py.
• Added langchain-mistralai to the Pixi environment (and updated the lockfile accordingly).

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
src/models/mistral/_base.py	Defines Mistral icon and KNIME category entry for grouping Mistral nodes.
src/models/mistral/_auth.py	Implements Mistral authentication spec/port object and the authenticator node.
src/models/mistral/__init__.py	Exposes the authenticator so it registers on import.
src/knime_llm.py	Imports models.mistral so nodes are registered in the extension runtime.
pixi.toml	Adds langchain-mistralai dependency for the environment.
pixi.lock	Lockfile updates to include langchain-mistralai and its resolved dependencies.

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[iusethemouse]

Looks good to me, also played around with it locally and checked validation 👍 Good to merge