feat: infer attachments

[radu-mocanu]

• infer attachments in runtime schema generation

Development Package

• Add this package as a dependency in your pyproject.toml:

[project]
dependencies = [
  # Exact version:
  "uipath-langchain==0.3.3.dev1004001854",

  # Any version from PR
  "uipath-langchain>=0.3.3.dev1004000000,<0.3.3.dev1004010000"
]

[[tool.uv.index]]
name = "testpypi"
url = "https://test.pypi.org/simple/"
publish-url = "https://test.pypi.org/legacy/"
explicit = true

[tool.uv.sources]
uipath-langchain = { index = "testpypi" }

[Copilot]

Pull request overview

This PR adds support for inferring attachments in runtime schema generation by integrating attachment transformation utilities from the uipath.runtime.schema module.

Changes:

• Replaced local schema transformation functions with imported utilities from uipath.runtime.schema
• Added attachment transformation to the input schema processing pipeline
• Updated dependency versions to support the new attachment transformation features

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.

File	Description
tests/runtime/test_schema.py	Updated test imports to use transform_references from uipath.runtime.schema and added comprehensive parametrized tests for attachment schema generation across different model types (Pydantic, dataclass, TypedDict)
src/uipath_langchain/runtime/schema.py	Replaced local _resolve_refs and _process_nullable_types functions with imported transform_references, transform_nullable_types, and transform_attachments utilities; integrated transform_attachments into input schema processing
pyproject.toml	Bumped minimum versions of uipath (2.4.0 → 2.4.14) and uipath-runtime (0.4.0 → 0.4.1) dependencies to support new transformation features

[Copilot]

Corrected spelling of 'can t' to 'can't'.

Suggested change

	# note: type ignore is needed here since mypy can t validate a dynamically created object's type
	# note: type ignore is needed here since mypy can't validate a dynamically created object's type

[Copilot]

Missing space after comma in version constraint. Should be >=2.4.14, <2.5.0 to match the formatting style used in line 9.

Suggested change

	"uipath>=2.4.14,<2.5.0",
	"uipath>=2.4.14, <2.5.0",