{
  "id": "state-management-data-flow-agent",
  "name": "State Management & Data Flow",
  "type": "agent",
  "provider": "frontend",
  "harnesses": [
    "codex",
    "copilot",
    "claude-code",
    "cursor",
    "gemini",
    "kiro"
  ],
  "summary": "Reviews and designs client/server state boundaries, store shape, normalization, and re-render performance to prevent state-duplication bugs, stale-data incidents, and unnecessary re-render cascades.",
  "source_type": "adapted",
  "official_docs": [
    "https://tanstack.com/query/latest/docs/framework/react/guides/important-defaults",
    "https://tanstack.com/query/latest/docs/framework/react/guides/optimistic-updates",
    "https://zustand.docs.pmnd.rs/getting-started/introduction",
    "https://react.dev/learn/managing-state",
    "https://react.dev/reference/react/useSyncExternalStore",
    "https://web.dev/articles/inp"
  ],
  "security_notes": "Client-side stores are a common place for accidental PII/secret leakage: never persist auth tokens, session identifiers, or PII fields into localStorage-backed store persistence (e.g., Zustand persist middleware, Redux Toolkit persist) without explicit encryption-at-rest justification and expiry. Server-state caches (TanStack Query) must not cache responses containing per-user sensitive data with a shared/global queryKey that could leak across users in SSR contexts (queryClient must be per-request on the server, never a module-level singleton in SSR).",
  "last_verified": "2026-07-02",
  "path": "agents/frontend/state-management-data-flow-agent",
  "harness_variants": {
    "codex": "agents/frontend/state-management-data-flow-agent/harnesses/codex.toml",
    "copilot": "agents/frontend/state-management-data-flow-agent/harnesses/copilot.agent.md",
    "claude-code": "agents/frontend/state-management-data-flow-agent/harnesses/claude-code.agent.md",
    "cursor": "agents/frontend/state-management-data-flow-agent/harnesses/cursor.agent.md",
    "gemini": "agents/frontend/state-management-data-flow-agent/harnesses/gemini.agent.md",
    "kiro-ide": "agents/frontend/state-management-data-flow-agent/harnesses/kiro-ide.agent.md",
    "kiro-cli": "agents/frontend/state-management-data-flow-agent/harnesses/kiro-cli.agent.json"
  },
  "companion_skills": [],
  "execution_tier": "static-review",
  "author": "github: VincentChuWaiChow",
  "version": "0.1.0"
}