Integration test fixes

[ultmaster]

No description provided.

[Copilot]

Pull Request Overview

This PR consolidates integration testing workflows and improves test output formatting. It refactors GitHub Actions to use shared workflow patterns and standardizes status messages across test utilities.

• Replaces individual GitHub Action composite actions with a reusable workflow pattern
• Updates test output messages to use bracketed prefixes ([OK], [ERROR], [SUCCESS])
• Adds missing dependencies to support langchain integration tests

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
python/tests/integration/weave_utils.py	Updates status messages to use bracketed format for consistency
python/tests/integration/mlflow_utils.py	Updates status messages to use bracketed format for consistency
python/tests/integration/common_utils.py	Fixes print_separator formatting to apply color to title text
pyproject.toml	Adds langchain-openai and openai dependencies for agent extras
.github/workflows/test-integration.yml	Refactors to use shared workflow instead of composite action
.github/workflows/shared-test-integration.yml	New reusable workflow consolidating integration test logic
.github/workflows/shared-check-version.yml	Renames workflow for consistency with shared naming pattern
.github/workflows/publish-vscode.yml	Updates reference to renamed shared workflow
.github/workflows/publish-pypi.yml	Updates reference to renamed shared workflow
.github/workflows/publish-npm.yml	Updates reference to renamed shared workflow
.github/actions/test-integration/action.yml	Removes composite action replaced by shared workflow

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[Copilot]

The MLflow server command has added --default-artifact-root ./mlartifacts parameter that wasn't present in the original action. This change should be documented or verified as intentional to ensure artifact storage works correctly.

Suggested change

	run: |
	run: |
	# Use a custom artifact root to avoid polluting the default ./mlruns directory in CI.
	mkdir -p ./mlartifacts