[Release] Increase version to 3.4.1

[MSNev]

• Update API documentation to highlight the deprecation (as when published this comes into effect), ensuring to call out the knwo required changes
• Add copilot release instructions and bump the version to the previously released beta release version to prepare for release as we are skipping 3.4.0 and 4.4.0 as the primary and will only be releasing those versions as beta releases

[Copilot]

Pull request overview

Prepares the Application Insights JavaScript SDK monorepo for the 3.4.1 (and related 4.4.1 / 0.4.1 / 1.3.1 / etc.) release by bumping package versions and refreshing release/documentation content, including adding Copilot release workflow prompts.

Changes:

• Bump release versions across packages (3.4.1 / 4.4.1 / 0.4.1 / 1.3.1 / etc.) and update version tracking/config files.
• Refresh release notes and documentation, including moving API reference content into docs/.
• Add GitHub Copilot release workflow prompt documentation under .github/.

Reviewed changes

Copilot reviewed 53 out of 54 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
version.json	Update repo release version to 3.4.1 and set next increment to patch; bump per-package release numbers.
package.json	Bump root package version to 3.4.1.
AISKU/package.json	Bump AISKU package version and internal dependency versions.
AISKULight/package.json	Bump AISKULight package version and internal dependency versions.
shared/AppInsightsCore/package.json	Bump core package version to 3.4.1.
shared/AppInsightsCommon/package.json	Bump common package version and core dependency version.
shared/1ds-core-js/package.json	Bump 1ds-core-js package version and core dependency version.
channels/1ds-post-js/package.json	Bump 1ds-post-js package version and core dependency version.
channels/applicationinsights-channel-js/package.json	Bump channel package version and core dependency version.
channels/tee-channel-js/package.json	Bump tee-channel package version and core dependency version.
channels/offline-channel-js/package.json	Bump offline-channel package version and core dependency version.
extensions/applicationinsights-analytics-js/package.json	Bump analytics extension version and internal dependencies.
extensions/applicationinsights-clickanalytics-js/package.json	Bump click analytics extension version and internal dependencies.
extensions/applicationinsights-cfgsync-js/package.json	Bump cfgsync extension version and internal dependencies.
extensions/applicationinsights-debugplugin-js/package.json	Bump debug plugin version and core dependency version.
extensions/applicationinsights-dependencies-js/package.json	Bump dependencies extension version and core dependency version.
extensions/applicationinsights-osplugin-js/package.json	Bump osplugin version and core dependency version.
extensions/applicationinsights-properties-js/package.json	Bump properties extension version and core dependency version.
extensions/applicationinsights-perfmarkmeasure-js/package.json	Bump perfmarkmeasure extension version and core dependency version.
tools/applicationinsights-web-snippet/package.json	Bump snippet package version and devDependencies to 3.4.1.
tools/chrome-debug-extension/package.json	Bump chrome debug extension version and core dependency version.
tools/chrome-debug-extension/manifest.json	Align chrome extension manifest version with package version.
tools/config/package.json	Bump web-config tool package version.
examples/AISKU/package.json	Bump example package version and internal dependencies.
examples/dependency/package.json	Bump example package version and internal dependencies.
examples/shared-worker/package.json	Bump example package version and internal dependencies.
examples/startSpan/package.json	Bump example package version and internal dependencies.
examples/cfgSync/package.json	Bump example package version and internal dependencies.
AISKU/Tests/es6-module-type-check/package.json	Bump test module version and internal dependencies.
AISKU/Tests/Unit/src/AISKUSize.Tests.ts	Update hardcoded version string used by size checks.
AISKULight/Tests/Unit/src/AISKULightSize.Tests.ts	Update hardcoded version string used by size checks.
AISKU/Tests/Unit/src/CdnPackaging.tests.ts	Update hardcoded version string used by CDN packaging checks.
extensions/applicationinsights-properties-js/Tests/Unit/src/propertiesSize.tests.ts	Update hardcoded version string used by size checks.
AISKU/Tests/Perf/src/AISKUPerf.ts	Update default perf test version string.
gruntfile.js	Update perf test version list to 3.4.1.
RELEASES.md	Add 3.4.1 release notes, keep 3.4.0-beta section, and update changelog content.
README.md	Update documentation links, snippet docs references, and clarify 2.x maintenance policy; add IE fallback note.
docs/Dependency.md	Update API reference links to new hosted documentation URLs.
docs/exceptionTelemetry.md	Update IExceptionConfig link to hosted typedoc.
docs/es3_Support.md	Clarify ES3/IE8 removal timing and 2.x maintenance policy.
examples/AISKU/README.md	Update API reference links to hosted documentation URLs.
examples/dependency/README.md	Update API reference links to hosted documentation URLs.
AISKU/README.md	Add 3.4.1 CDN size badge row and trim older entries.
shared/AppInsightsCore/src/interfaces/ai/context/ITelemetryTrace.ts	Expand deprecation guidance and examples for trace context migration.
extensions/applicationinsights-osplugin-js/src/OsPlugin.ts	Clean up imports (remove unused symbol).
tools/applicationinsights-web-snippet/src/type.ts	Expand typedoc documentation for snippet config types.
tools/applicationinsights-web-snippet/src/applicationinsights-web-snippet.ts	Re-export snippet config types from the package entry point.
docs/API-reference.md	Add new API reference document under docs/ with updated typedoc links.
API-reference.md	Remove old root-level API reference file (replaced by docs/API-reference.md).
.npmignore	Update allowlist to publish docs/API-reference.md instead of removed root file.
common/config/rush/npm-shrinkwrap.json	Refresh lockfile with updated dependency versions.
.github/prompts/release-pr.prompt.md	Add Copilot prompt file describing the release PR workflow.
.github/copilot-instructions.md	Reference workflow prompt files and document release/versioning commands.

Files not reviewed (1)

• common/config/rush/npm-shrinkwrap.json: Language not supported

Comments suppressed due to low confidence (1)

AISKU/API.md:142

• The flush section documents an outdated parameter name (async) and an incomplete signature. The current SDK API uses isAsync and supports callback/promise behavior; please update this doc section accordingly.

### flush

```ts
flush(async?: boolean = true)

Immediately send all queued telemetry. By default, it is sent async.

Note: You don't have to use flush, as it is automatically called at an interval and when the user closes the window.

</details>

[MSNev]

This file is moved from the root of the repo to the docs folder and updated as it referenced a lot of the items that are now deprecated.

[Copilot]

Pull request overview

Copilot reviewed 57 out of 58 changed files in this pull request and generated 3 comments.

Files not reviewed (1)

• common/config/rush/npm-shrinkwrap.json: Language not supported