feat: add periodic telemetry event flushing

[radu-mocanu]

Summary

• periodically flush buffered App Insights custom events when EnablePeriodicTelemetryFlush is enabled
• coordinate periodic, explicit, reset, and shutdown flushes through one synchronized client lifecycle
• preserve the existing buffered behavior when the feature flag is disabled

Why

long-running calls can keep low-volume lifecycle events buffered until process shutdown. a bounded periodic flush reduces event loss when infrastructure terminates the process.

Development Packages

uipath

[project]
dependencies = [
  # Exact version (copy-paste ready):
  "uipath==2.13.15.dev1018297334",

  # Any version from this PR (uncomment to use a range instead):
  # "uipath>=2.13.15.dev1018290000,<2.13.15.dev1018300000",
]

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

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

[Copilot]

Pull request overview

Adds an optional, feature-flagged background worker to periodically flush buffered Application Insights custom events, improving delivery of low-volume lifecycle telemetry in long-running processes while preserving the existing buffering behavior by default.

Changes:

• Introduce EnablePeriodicTelemetryFlush to start a periodic flush worker that calls flush() at a fixed interval.
• Synchronize explicit/reset/shutdown flush operations with locks and a unified _shutdown() lifecycle.
• Add integration-style tests using a local HTTP ingestion server to validate buffered vs periodic-flush behavior; bump package version to 2.13.15.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
packages/uipath/src/uipath/telemetry/_track.py	Implements periodic flush worker behind a feature flag and synchronizes flush/reset/shutdown lifecycle.
packages/uipath/tests/telemetry/test_track.py	Adds tests verifying default buffering, periodic flush delivery, and shutdown synchronization semantics.
packages/uipath/pyproject.toml	Bumps uipath package version to 2.13.15.
packages/uipath/uv.lock	Updates lockfile version entry to 2.13.15.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[github-actions]

🚨 Heads up: uipath-langchain cross-tests are FAILING 🚨

Your changes may break the uipath-langchain-python integration.

⚠️ These checks are NOT enforced by branch protection rules. Please review the failures before merging.

🔍 Inspect the failed run →

[github-actions]

🚨 Heads up: uipath-integrations cross-tests are FAILING 🚨

Your changes may break one or more integrations in uipath-integrations-python:

• uipath-openai-agents
• uipath-google-adk
• uipath-agent-framework
• uipath-llamaindex
• uipath-pydantic-ai

⚠️ These checks are NOT enforced by branch protection rules. Please review the failures before merging.

🔍 Inspect the failed run →

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
92.7% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud