v1.22.0

## What's Changed
* Bump dev version: v1.22.0.dev0 by @albertvillanova in https://github.com/huggingface/smolagents/pull/1657
* refactor(PythonExecutor): inherit from ABC and declare abstract methods by @HairlessVillager in https://github.com/huggingface/smolagents/pull/1654
* Fix error for GPT-5 not supporting the `stop` parameter by @Xmader in https://github.com/huggingface/smolagents/pull/1662
* Enable return_full_result directly in run method by @aymeric-roucher in https://github.com/huggingface/smolagents/pull/1658
* Make RunResult json serializable by @aymeric-roucher in https://github.com/huggingface/smolagents/pull/1659
* Change truncation to remove end rather than middle by @aymeric-roucher in https://github.com/huggingface/smolagents/pull/1665
* Document that model kwargs are forwarded to model completion call by @albertvillanova in https://github.com/huggingface/smolagents/pull/1679
* Fix missing kwargs forward to vLLM model generate call by @albertvillanova in https://github.com/huggingface/smolagents/pull/1680
* Raise RuntimeError with LiteLLM response details if no choices by @albertvillanova in https://github.com/huggingface/smolagents/pull/1683
* Fix AmazonBedrockModel with reasoning/thinking content by @albertvillanova in https://github.com/huggingface/smolagents/pull/1681
* Fix installation command in README by quoting extra by @shahgahmed in https://github.com/huggingface/smolagents/pull/1685
* CI hotfix: Pin openai < 1.100.0 for litellm extra by @albertvillanova in https://github.com/huggingface/smolagents/pull/1693
* Support openai 1.100 for litellm extra by @albertvillanova in https://github.com/huggingface/smolagents/pull/1698
* Pin telemetry extra >=0.1.15 to use new TokenUsage structure by @albertvillanova in https://github.com/huggingface/smolagents/pull/1699
* Add AGENTS.md by @albertvillanova in https://github.com/huggingface/smolagents/pull/1701
* Test telemetry extra by @albertvillanova in https://github.com/huggingface/smolagents/pull/1700
* Replace slim with bullseye base image in Docker executor by @albertvillanova in https://github.com/huggingface/smolagents/pull/1702
* fix: error missing f-string by @njbrake in https://github.com/huggingface/smolagents/pull/1691
* Support custom Dockerfile in DockerExecutor by @albertvillanova in https://github.com/huggingface/smolagents/pull/1705
* Support MCP structured output and output schema by @chahn in https://github.com/huggingface/smolagents/pull/1663
* Improve agent image handling by @aaron-ang in https://github.com/huggingface/smolagents/pull/1601
* 🌐 [i18n-KO] Translated `multiagents.md` to Korean by @pyapyapya in https://github.com/huggingface/smolagents/pull/1644
* Fix CI 403 error for Wikipedia page in test_visit_webpage by @albertvillanova in https://github.com/huggingface/smolagents/pull/1716
* fix typos in the system prompt by @Frame17 in https://github.com/huggingface/smolagents/pull/1710
* Fix pip install commands by quoting extras by @albertvillanova in https://github.com/huggingface/smolagents/pull/1690
* Fix deprecation warning about parameter messages by @albertvillanova in https://github.com/huggingface/smolagents/pull/1718
* Fix warning about parameter max_new_tokens by @albertvillanova in https://github.com/huggingface/smolagents/pull/1721
* Adds Modal Remote Executor by @thomasjpfan in https://github.com/huggingface/smolagents/pull/1722
* Fix formatting of title in translation section of documentation by @albertvillanova in https://github.com/huggingface/smolagents/pull/1727
* Remove untranslated sections from the documentation by @albertvillanova in https://github.com/huggingface/smolagents/pull/1729
* fix: add ipykernel in dockerfile of prebuilt docker executor by @cyyeh in https://github.com/huggingface/smolagents/pull/1731
* Fix E2BExecutor by pinning e2b-code-interpreter to < 2 by @albertvillanova in https://github.com/huggingface/smolagents/pull/1733
* Fix DockerExecutor connection reset error with server readiness check by @benoriol in https://github.com/huggingface/smolagents/pull/1684
* [i18n-KO] Translated building_good_agents.md to Korean by @FacerAin in https://github.com/huggingface/smolagents/pull/1714
* 🌐 [i18n-KO] Translated installation.md to Korean by @FacerAin in https://github.com/huggingface/smolagents/pull/1647
* Support e2b-code-interpreter v2 by @August-murr in https://github.com/huggingface/smolagents/pull/1751
* Fix token count initialization when plan_message.token_usage is None by @satwikkansal in https://github.com/huggingface/smolagents/pull/1752
* Support user-configurable parameter override for model completion parameters by @albertvillanova in https://github.com/huggingface/smolagents/pull/1678
* Fix error for grok-4/grok-3-mini not supporting the stop parameter by @suryabdev in https://github.com/huggingface/smolagents/pull/1766
* Replace DockerExecutor Dockerfile with file object by @albertvillanova in https://github.com/huggingface/smolagents/pull/1738
* Update documentation to clarify `instructions` are appended by @chahn in https://github.com/huggingface/smolagents/pull/1709
* 🌐 [i18n-KO] Translated `react.md` to Korean by @nsbg in https://github.com/huggingface/smolagents/pull/1666
* Pass tools_to_call_from to TransformersModel._prepare_completion_kwargs by @albertvillanova in https://github.com/huggingface/smolagents/pull/1782
* 🌐 [i18n-KO] Translated `models.md` to Korean  by @Kim-Ju-won in https://github.com/huggingface/smolagents/pull/1776
* Fix AttributeError when trying to log a None by @albertvillanova in https://github.com/huggingface/smolagents/pull/1786
* fix(agent): remove unused get_variable_names function by @keli-wen in https://github.com/huggingface/smolagents/pull/1784
* Fix XPath injection in search_item_ctrl_f by @albertvillanova in https://github.com/huggingface/smolagents/pull/1768
* Use context manager for per-operation websocket connection in DockerExecutor by @albertvillanova in https://github.com/huggingface/smolagents/pull/1750

## New Contributors
* @Xmader made their first contribution in https://github.com/huggingface/smolagents/pull/1662
* @shahgahmed made their first contribution in https://github.com/huggingface/smolagents/pull/1685
* @aaron-ang made their first contribution in https://github.com/huggingface/smolagents/pull/1601
* @pyapyapya made their first contribution in https://github.com/huggingface/smolagents/pull/1644
* @Frame17 made their first contribution in https://github.com/huggingface/smolagents/pull/1710
* @cyyeh made their first contribution in https://github.com/huggingface/smolagents/pull/1731
* @satwikkansal made their first contribution in https://github.com/huggingface/smolagents/pull/1752
* @suryabdev made their first contribution in https://github.com/huggingface/smolagents/pull/1766
* @Kim-Ju-won made their first contribution in https://github.com/huggingface/smolagents/pull/1776
* @keli-wen made their first contribution in https://github.com/huggingface/smolagents/pull/1784

**Full Changelog**: https://github.com/huggingface/smolagents/compare/v1.21.3...v1.22.0