feat: add support for mistral (#291)

* [x] text generation
* [x] streaming
* [x] tool calling
* [x] image input
* [x] structured output
* [x] embeddings
* [x] examples
* [x] documentation

Implementation is basically functional, but has following flaws to be
resolved:
1. tool schema differs in a breaking way from GPT - extension point is a
MUST
2. duplication of stream, message conversion and tool calling
3. error handling - once again

refactor: simplify transformers implementation by adding specific Pla…

…tform (#314)

Similar to #312

fix: missing namespace when upserting in Pinecone store (#310)

When adding documents, it does not take configured namespace into
consideration, this PR fixes it.

refactor: use lib specific exceptions instead of native ones (#293)

feat: add support for TransformersPHP for model runtime in PHP (#280)

Sitting on top of https://github.com/CodeWithKyrian/transformers-php

docs: add section about chain in chain (#268)

refactor: introduce tool metadata factory interface (#249)

Preparation for different tool metadata sources, e.g. config or mcp
based

ci: use `bug` instead of `fix` label (#246)

chore: require PHPStan and Rector 2 (#230)

* Require PHPStan and Rector 2

* fix

* fix: phpstan 2.0 issues (#231)

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Co-authored-by: Christopher Hertel <[email protected]>

fix: array access of tool override (#226)