Launch Darkly Support for Frontend

[matthewlouisbrockman]

Adds launch darkly support for frontend and a /flags page to check the feature flags (which itself is enabled by feature flag)

[linear-code]

EN-979

[cursor]

PR Summary

Medium Risk
Introduces an admin-only page that exposes evaluated flag values and team targeting; access depends on LaunchDarkly is_admin with defaults/fallbacks when LD is missing or fails.

Overview
The PR adds @launchdarkly/node-server-sdk, optional LAUNCHDARKLY_SDK_KEY, a server feature-flag service with LD multi-context (user + team), typed FEATURE_FLAGS (is_admin, i_exist), and dashboard/[teamSlug]/flags gated when evaluated isAdmin is true.

Errors / gaps: PR title/description say frontend LaunchDarkly support, but there is no client/browser LD integration—evaluation is server-only. The new flags route is not linked from dashboard navigation, so it is only reachable by URL. i_exist is a test flag still registered in production FEATURE_FLAGS. Access control calls listFeatureFlags (evaluates every flag) and then checks isAdmin from that list instead of a single getBoolean check.

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Project	Deployment	Actions	Updated (UTC)
web	Ready	Preview, Comment	Jun 13, 2026 1:37am

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[cursor]

Cursor Bugbot has reviewed your changes and found 2 potential issues.

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