refactor: remove explore tab, simplify to 3-tab layout (Home, Progress, Profile)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/shared/stores/exploreFilterStore.ts

@@ -1,30 +0,0 @@
-/**
- * TabataFit Explore Filter Store
- * Lightweight Zustand store (no persistence) for sharing filter state
- * between the Explore screen and the filter sheet modal.
- */
-
-import { create } from 'zustand'
-import type { WorkoutLevel } from '../types'
-
-interface ExploreFilterState {
-  level: WorkoutLevel | 'all'
-  equipment: string | 'all'
-  /** Derived equipment options from workout data — set once by Explore screen */
-  equipmentOptions: string[]
-  // Actions
-  setLevel: (level: WorkoutLevel | 'all') => void
-  setEquipment: (equipment: string | 'all') => void
-  setEquipmentOptions: (options: string[]) => void
-  resetFilters: () => void
-}
-
-export const useExploreFilterStore = create<ExploreFilterState>()((set) => ({
-  level: 'all',
-  equipment: 'all',
-  equipmentOptions: [],
-  setLevel: (level) => set({ level }),
-  setEquipment: (equipment) => set({ equipment }),
-  setEquipmentOptions: (equipmentOptions) => set({ equipmentOptions }),
-  resetFilters: () => set({ level: 'all', equipment: 'all' }),
-}))

src/shared/stores/index.ts

@@ -6,4 +6,4 @@ export { useUserStore } from './userStore'
 export { useActivityStore, getWeeklyActivity } from './activityStore'
 export { usePlayerStore } from './playerStore'
 export { useProgramStore } from './programStore'
-export { useExploreFilterStore } from './exploreFilterStore'
+export { useKineProgramStore } from './kineProgramStore'