feat(dev-tools): rotate sessions tool and experiment feature flags#700
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Add scripts/inject-client-config.js which reads HOMESERVER_LIST, ELEMENT_CALL_URL, EXPERIMENTS and other config keys from the GH Actions environment and merges them into config.json at build time. CI workflows pass these through via env; the setup action prints an injected-config summary in the job summary. knip.json updated to include the new script as an entry point.
…ntages useClientConfig.ts gains getExperimentVariant() which deterministically buckets a userId into a variant using a hash of userId+experimentName, then checks it against rolloutPercentage. Experiment defaults shape is typed so all callers get compile-time checking of known experiment names.
ExperimentsPanel shows every experiment name, current variant, rollout percentage, and whether the user is enrolled — readable without opening the console. DevelopTools.tsx wires it into the developer settings tab.
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Summary
Consolidates two developer-tooling branches. Adds a "Rotate Sessions" tool to Developer Tools settings and an Experiments panel for percentage-rollout feature flags, with build-time injection from environment variables.
Changes
feat/devtool-rotate-sessions
prepareToEncrypt()on all joined rooms to force Megolm session rotation, useful for testing encryption key rotation flows.feat/feature-flag-env-vars
deepMergeprototype-pollution fix: block keys like__proto__,constructor, andprototypein the deep-merge utility used to inject runtime config.scripts/inject-client-config.jsreadsCLIENT_CONFIG_*environment variables at build time and merges them intoconfig.json, enabling CI/CD pipelines and GitHub Actions to configure feature flags without modifying the source file.useExperimentVariant): typed helper that deterministically buckets users into experiment variants by percentage rollout, based on user ID hash.ExperimentsPanel: new settings panel under Developer Tools listing active experiments and their variant assignments.useClientConfigtest: unit tests covering experiment bucketing logic and theuseExperimentVarianthook.Testing Checklist
CLIENT_CONFIG_*env vars at build time: merged into runtime config correctlydeepMergewith__proto__key: rejected, no prototype pollutionChangeset
feat:Rotate Sessions developer toolfeat:Experiment bucketing with env-var-injectable configfix:Prototype-pollution guard in deepMerge