chore(deps-dev): bump @langchain/core from 1.1.46 to 1.2.1

[dependabot]

Bumps @langchain/core from 1.1.46 to 1.2.1.

Release notes

Sourced from @​langchain/core's releases.

@​langchain/core@​1.2.1

Patch Changes

• #10674 f017708 Thanks @​christian-bromann! - fix: classify provider 429s before retrying

• #11092 7918bbd Thanks @​aolsenjazz! - fix(core): only treat arrays of content blocks as ToolMessage content

  Fix tool outputs that are arrays of plain objects being forwarded as malformed message content. An array is now only treated as message content blocks when every element is an object with a type; otherwise it is JSON-stringified.

@​langchain/core@​1.2.0

Minor Changes

• #10924 2e28115 Thanks @​christian-bromann! - feat(core): add OpenAI-compatible stream event conversion

Patch Changes

• #11047 ac0f71d Thanks @​christian-bromann! - fix(core): preserve AIMessage content blocks

  Keep existing v1 contentBlocks when constructing AIMessage instances so serialized messages do not lose block content during deserialization.

@​langchain/core@​1.1.48

Patch Changes

• #10832 1b24369 Thanks @​info-arnav! - fix(core, openrouter): make CJS default re-exports callable

• #10666 2bb55b0 Thanks @​hnustwjj! - feat(openrouter): surface reasoning content as v1 standard content blocks

  convertOpenRouterResponseToBaseMessage and convertOpenRouterDeltaToBaseMessageChunk now copy OpenRouter's reasoning (flat string) and reasoning_details (structured array) fields onto additional_kwargs.reasoning_content / additional_kwargs.reasoning_details. A new ChatOpenRouterTranslator is registered in @langchain/core under the "openrouter" provider key so AIMessage.contentBlocks emits standard {type: "reasoning"} blocks alongside text and tool calls.

  Previously, reasoning text returned by reasoning-capable models routed through OpenRouter (DeepSeek R1, Minimax M2, Claude extended thinking, o-series, etc.) was silently dropped: only the reasoning_tokens count was preserved via usage_metadata. Consumers using standard content blocks (including the frontend agent UI patterns shown in the docs) could not display the model's chain of thought.

• #10918 3999fab Thanks @​christian-bromann! - fix(openai): stream custom tool calls through Responses API chunks

@​langchain/core@​1.1.47

Patch Changes

• #10906 f61b345 Thanks @​hntrl! - feat(core): add uuid v6 utility support

  Add v6 UUID generation support to @langchain/core/utils/uuid by vendoring the upstream uuidjs v6 implementation and its v1ToV6 helper, exporting v6 from the UUID utils index, and adding tests for deterministic generation, buffer/offset behavior, validation/versioning, and ordering.

... (truncated)

Commits

• 1ee0df0 chore: version packages (#11097)
• f017708 fix(core): better 429 error handling (#10674)
• 05936ab fix(openai): omit empty reasoning item id in Responses API input (#11045)
• 798cb70 fix(openai): route standard url file blocks to native input_file in Responses...
• 80c790b fix(openai): stream built-in tool progress events (#11090)
• d2e6afc fix(groq): require @​langchain/core >= 1.1.30 in peer dependency (#11072)
• c66870e feat(weaviate): add X-Weaviate-Client-Integration telemetry header (#11088)
• baa57ba fix(anthropic): omit default disabled thinking from requests (#11073)
• 04edb8d docs(ibm): fix "Recieved" typo in tool_choice error message (#11066)
• 2b7f368 chore(deps): bump uuid from 14.0.0 to 14.0.1 (#11094)
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