Force refresh button

[shambavi2007]

Description

Fixes #153

Added a Force Refresh Data button to the dashboard UI.

###Changes Made:

• Added RefreshCw icon using lucide-react
• Added dashboard refresh functionality using refresh=true
• Added loading spinner animation while refreshing
• Added success toast notification using Sonner after fresh data loads
• Refetched dashboard data bypassing cache

Pillar

• 🎨 Pillar 1 — New Theme Design
• 📐 Pillar 2 — Geometric SVG Improvement
• 🕐 Pillar 3 — Timezone Logic Optimization
• 🛠️ Other (Bug fix, refactoring, docs)

Visual Preview

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• I have starred the repo.
• I have made sure that i have only one commit to merge in this PR.
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[Aamod007]

Two things to fix before we merge:

1. The spinner won't actually show You're setting the loading state and then immediately doing a full page redirect with window.location.href. The browser unloads the page before React can re-render, so the spinner just flashes and disappears.
   If you want the spinner to be visible, swap window.location.href for router.push() from next/navigation. That keeps the React tree alive long enough for the loading state to render before the server component re-fetches.
2. The test is breaking typecheck The dashboard page now expects a searchParams prop, but the test only passes params. Just add searchParams: Promise.resolve({}) to the test call on line 86 and the error goes away.

Better to have: Add disabled={loading} to the button. If someone double-clicks it fast, it fires two navigations.

[Aamod007]

@shambavi2007 nice work on this. The refresh button looks great and the latest fixes are solid. Everything is passing locally and ready to go. Thanks for the quick updates!