feat: add recently viewed models with localStorage persistence

[samalbishnupriya06-stack]

Description

Implements the "Recently Viewed" feature — a pure client-side history tracker that saves the last 5 visited model pages to localStorage and displays mini-card links on the models directory and model detail pages.

Closes #52

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Changes Made

New Files

• src/hooks/useRecentlyViewed.ts — custom hook to read/write recently viewed models in localStorage
• src/components/models/TrackModelView.tsx — headless client component that calls addModel() on mount
• src/components/models/RecentlyViewed.tsx — displays mini-cards linking back to recently viewed models

Modified Files

• src/app/models/[slug]/page.tsx — renders <TrackModelView> to record the visit and <RecentlyViewed> at the bottom
• src/app/models/page.tsx — renders <RecentlyViewed> at the bottom of the directory listing

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Behavior

• Visiting any /models/[slug] page appends that model (slug, name, avatar) to a localStorage array
• Duplicate entries are removed before prepending — no repeated models
• History is capped at 5 items
• The RecentlyViewed component only renders after useEffect (client-side), preventing Next.js hydration mismatch errors
• If history is empty, the section renders nothing (null)

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Type of Change

• Bug fix
• New feature (non-breaking)
• Breaking change
• Documentation update

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Checklist

• No API routes or Supabase changes introduced
• Component only renders on the client (hydration-safe)
• Duplicate models are prevented in the history array
• History is capped at 5 items
• npm run build passes without errors
• Tested locally in both light and dark mode
• Tested with fresh localStorage (no prior history) — section is hidden
• Tested with 6+ visited models — confirms max 5 cap

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Project	Deployment	Actions	Updated (UTC)
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[AditthyaSS]

@samalbishnupriya06-stack Touched package-lock.json plz revert it

[samalbishnupriya06-stack]

@samalbishnupriya06-stack Touched package-lock.json plz revert it

Okh doing it.