chore: Add Vue SDK data-saving-mode example

[joker23]

This PR will add in a FDv2 example for vue client sdk

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Note

Overview
Adds a Vue 3 + Vite example that opts into FDv2 via dataSystem: {} and lets you switch connection mode, streaming, and context at runtime.

The app is registered as a yarn workspace, built and type-checked in Vue CI, and included in release-please so the SDK version in the example stays in sync.

Also corrects React data-saving-mode docs: empty dataSystem uses the browser one-shot default (fetch once, no live updates) rather than streaming.

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[github-actions]

@launchdarkly/js-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 26360 bytes
Compressed size limit: 29000
Uncompressed size: 129188 bytes

[github-actions]

@launchdarkly/js-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 26360 bytes
Compressed size limit: 29000
Uncompressed size: 129188 bytes

[github-actions]

@launchdarkly/browser size report
This is the brotli compressed size of the ESM build.
Compressed size: 179887 bytes
Compressed size limit: 200000
Uncompressed size: 833430 bytes

[github-actions]

@launchdarkly/js-client-sdk size report
This is the brotli compressed size of the ESM build.
Compressed size: 32444 bytes
Compressed size limit: 34000
Uncompressed size: 116232 bytes

[github-actions]

@launchdarkly/js-client-sdk size report
This is the brotli compressed size of the ESM build.
Compressed size: 32142 bytes
Compressed size limit: 34000
Uncompressed size: 114604 bytes

[github-actions]

@launchdarkly/js-client-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 41502 bytes
Compressed size limit: 44000
Uncompressed size: 224541 bytes

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 1 additional finding.

[cursor]

Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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[cursor]

Lockfile omitted for new workspace

High Severity

The new @launchdarkly/vue-client-sdk-example-data-saving-mode workspace and its vue-tsc dependency are added without a matching yarn.lock update. CI uses Yarn immutable installs, so yarn workspaces focus for this example will fail before the new build and type-check steps run.

 

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