fix: preserve the conversational workspace contract

[radu-mocanu]

Summary

• hide only marked workspace content-parts from assistant history while retaining ordinary assistant attachments
• preserve compatibility with content models that drop metaData by using stable ws- content-part IDs
• make conversational advanced output state explicit and remove mutable model defaults
• remove the Runtime-to-Agent dependency direction by moving the shared client-side tool type to a neutral module

Validation

• 4 workspace contract tests pass against the declared older core dependency
• 118 integrated mapper and advanced-agent tests pass
• ruff and focused mypy pass
• lockfile is current

[Copilot]

Pull request overview

This PR tightens the “conversational workspace” contract by ensuring assistant-side workspace files are excluded from LLM-visible history while preserving normal assistant attachments, and by making conversational advanced-agent state handling explicit and safer.

Changes:

• Update message mapping to skip only assistant workspace file content-parts (via metadata.fileKind == "workspace" or stable ws- content-part IDs), while still producing attachments for ordinary assistant files.
• Remove mutable Pydantic defaults in advanced-agent graph state/output models and fail fast when conversational exchange state wasn’t captured.
• Decouple runtime modules from agent modules by moving the shared ClientSideToolInfo type into a neutral module.

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
uv.lock	Bumps locked package version to 0.14.8.
pyproject.toml	Bumps project version to 0.14.8.
tests/runtime/test_chat_message_mapper_workspace.py	Expands coverage to ensure only workspace-marked assistant file parts are hidden and ordinary assistant attachments remain.
src/uipath_langchain/runtime/messages.py	Implements workspace-file detection (metadata + ws- ID fallback) and skips only assistant workspace file parts.
src/uipath_langchain/runtime/runtime.py	Switches to importing ClientSideToolInfo from the new neutral types module.
src/uipath_langchain/agent/tools/client_side_tool.py	Removes the local TypedDict definition and imports the shared ClientSideToolInfo.
src/uipath_langchain/agent/advanced/types.py	Replaces mutable defaults with Field(default_factory=...) for graph state.
src/uipath_langchain/agent/advanced/agent.py	Makes conversational wrapper output/state handling explicit; raises a structured error if state capture is missing.
src/uipath_langchain/_client_side_tool_types.py	Adds a shared, neutral ClientSideToolInfo TypedDict.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
96.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud