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Reusable design system offering tokens, semantic theming, curated icons, UI components, preview/testing utilities and an exhaustive component catalog with sample apps and documentation.
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Type-safe endpoints, a coroutine HTTP client with automatic OAuth token refresh and coalesced retries, layered memory+persistent caching, reachability-aware retry, single-flight repository and reactive cache streams.
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Provider-agnostic building blocks: offline delta-sync with tombstones and pagination, auth/session contracts, analytics/telemetry ports, typed remote-config with debug overrides, validators and testing fakes.