বাজার দর (BazarDor) — Everyday Market Prices at a Glance.

বাজার দর (BazarDor) is a localized, information-oriented web application dedicated to tracking and publishing real-time grocery and kitchen essential prices in Bangladesh. Written natively in Bengali, the platform organizes everyday kitchen essentials—from rice (চাল), lentils (ডাল), and cooking oil (তেল) to fresh vegetables (সবজি), meat (মাংস), and fish (মাছ)—into a structured, easily searchable directory.

Designed for everyday families, kitchen shoppers, and budget-conscious citizens, BazarDor solves the problem of arbitrary wet-market markups by displaying current market rates alongside directional price change indicators (increase, decrease, steady).

Urban and rural consumers in Bangladesh navigate fluctuating kitchen markets with significant asymmetry:

• Extreme short-term price shifts: Monsoon rains, transportation bottlenecks, and seasonal shortages cause sharp day-to-day spikes in essential goods like green chili (কাঁচামরিচ), onions (পেঁয়াজ), and potatoes (আলু).
• No centralized, localized comparison tool: Government price bulletins (such as DAM or TCB) are often published in rigid PDF reports or outdated tabular portals that are nearly impossible to read on a mobile phone during a morning bazaar trip.
• English-only barrier in tech: Many consumer tech apps default to English, creating friction for everyday citizens who naturally read Bengali market names and weight units (কেজি, লিটার, হালি).

My verified responsibilities across the development lifecycle included:

• Full-Stack Architecture: Engineered Next.js 15 App Router application with React 19 server and client components.
• UI & Localization System: Designed a fresh mint-green aesthetic with DaisyUI and Tailwind CSS, configuring Bengali font fallbacks and high-legibility typographic scales.
• Authentication & User Features: Integrated Better-Auth with Zod schema validation for user account management and watchlist capabilities.
• Data Schema & Storage: Configured libSQL / SQLite data layer for flexible commodity and category records.
• Deployment & Edge Optimization: Deployed to Vercel production with responsive mobile rendering for 3G/4G bandwidth conditions.

The visual identity of BazarDor communicates freshness, cleanliness, and trust:

Typography: Implemented Hind Siliguri and Noto Sans Bengali with clear font weights (500/600/700) to avoid cramped conjunct glyphs (যুক্তাক্ষর) and ensure comfortable reading across low-resolution mobile screens.

Inspection of the BazarDor codebase confirms the verified technical stack:

• Next.js 15 (App Router): Leverages server component streaming for initial page payloads combined with client interactivity for instant search.
• React 19 & TypeScript 5.7: Strict type safety for price models, market locations, and category taxonomies.
• Tailwind CSS 3.4 & DaisyUI 4.12: Modern utility styling and accessible component primitives (cards, badges, modals, input groups).
• Better-Auth & Zod: Modern authentication framework supporting credential-based sessions with Zod runtime schema verification.
• libSQL / SQLite Client: Lightweight database driver for managing commodity records and regional market benchmarks.
• Vercel Production Deployment: Hosted with global asset CDN distribution and clean route mapping.

A price-tracker is most useful when the shopper is actually standing inside a busy bazaar. Therefore, responsive behavior was rigorously verified:

• Mobile Viewport (< 640px): High-contrast cards with large Bengali prices, prominent search bar pinned near the top, and swipeable category pills.
• Tablet Viewport (640px – 1024px): Balanced 2-column commodity grid with side-by-side trend indicators and district selection dropdown.
• Desktop Viewport (> 1024px): Full hero banner, live horizontal price ticker, and multi-column category showcases.

Challenge: Bengali Glyph Rendering & Font Loading Overhead.
Complex Bengali conjunct characters can render incorrectly or cause layout jumps if web fonts fail to load gracefully on slow mobile connections.

Solution: Implemented Google Fonts preconnect with fallback stacks (`Hind Siliguri`, `Noto Sans Bengali`, `sans-serif`) and subset font glyphs to minimize latency while guaranteeing accurate text rendering.

Challenge: Standardizing Fluctuating Unit Metrics.
Different commodities use different metrics in Bangladesh (e.g. eggs by 'হালি', vegetables by 'কেজি', oils by 'লিটার').

Solution: Normalized unit structures in TypeScript contracts so price cards dynamically render the correct cultural denominator (`/ কেজি`, `/ হালি`, `/ লিটার`) seamlessly.

BazarDor demonstrates how modern frontend frameworks can solve genuine local problems. By combining accessible Bengali typography, clear visual price indicators, and lightweight architecture, the project provides an authentic public good.

It showcases advanced competence in Next.js 15 App Router architecture, DaisyUI component design, Better-Auth integration, and culturally resonant UI localization.