CONFIG: Setup Zustand Store Root and Devtools

[nayan458]

Task: Setup Zustand Store Root and Devtools

Type: Infrastructure
Milestone: M0-Project - Foundation
Estimate: S

What This Enables

Any client-side state that lives outside React Query (auth session, UI state, theme preference). Blocks auth store and global UI state work.

Deliverables

• src/store/index.ts : store root / barrel export
• src/store/auth.store.ts : example slice: user, token, setToken, clearSession
• src/store/ui.store.ts : example slice: theme, sidebarOpen
• Redux DevTools wired via zustand/middleware devtools wrapper
• Persist middleware configured for auth slice (sessionStorage or localStorage decide and document)

Acceptance Criteria

• Store slices are importable via @/store
• Redux DevTools browser extension shows named store actions
• clearSession() wipes persisted auth state correctly
• No business logic in stores; stores hold state and simple setters only

Notes

• Use the immer middleware only if nested state becomes necessary; avoid it by default
• Keep stores flat; nested objects in Zustand cause subtle re-render bugs