为什么值得关注

它结合了实时差异检测、四层角色系统和可选的免费AI风险预测功能——关键路径无需付费SaaS。专为孟加拉国的公民需求设计，并包含纪念功能。

适合谁使用

关注基础设施问责制的孟加拉国公民
政府审计人员和监督机构
公民科技开发者和活动家
参与“七月精神”黑客松的参赛者

典型使用场景

通过公民提交的带GPS和EXIF元数据的照片来验证公共项目进展
为停滞或有争议的项目生成防篡改审计PDF
通过差异指数标记潜在的预算滥用
通过地区透明度排行榜建立公众信任

项目优势

利用GPS和EXIF元数据在500米范围内进行地理围栏验证
优雅降级：无需任何API密钥即可本地运行
实现真实的RBAC（基于角色的访问控制）和信任评分机制用于社区验证
MIT开源许可证，关键路径不依赖付费SaaS

使用前须知

尚未实现速率限制，存在垃圾信息风险
未配置Pinata JWT时，图片以base64形式存储在SQLite中，不适用于生产环境
目前仅预填充了5个达卡项目，未展示在孟加拉国全国的扩展能力
认证使用简单的HMAC签名会话cookie，生产环境应替换为NextAuth

README 快速开始

🏛️ Janata Ledger · জনতা লেজার

Open-source civic accountability platform for Bangladesh. Cross-references citizen-submitted ground evidence (GPS + EXIF-verified) against official infrastructure budgets to flag fraud, stalled projects, and budget misuse — in real time.

Built for the Spirit of July · Track B hackathon.

✨ What it does

Pillar	Answers
🗺️ Public Projects Map	Where is the money being spent?
📸 Citizen Photo Reports	What does the site actually look like today?
🛡️ Auditor Verification	Who checks the checkers?
🔔 Red Alert Workflow	Then what happens when the gap is too big?
💬 Public Discussion	Who gets to debate the project?
🕯️ July Memorial	We remember, together.

🚀 Quickstart

git clone https://github.com//janata-ledger.git
cd janata-ledger
npm install
cp .env.example .env        # edit DATABASE_URL if needed
npm run db:push             # apply schema
npm run db:seed             # 5 sample Dhaka projects
npm run dev                 # → http://localhost:3000

No API keys are required for local exploration. The app gracefully degrades when optional keys (PINATA_JWT, GEMINI_API_KEY) are missing — features that need them are hidden, not broken.

☁️ Deploy to Vercel

Push the repo to GitHub.
Create a free Neon Postgres project (ap-southeast-1 recommended for Bangladesh).
In Vercel → New Project → import the repo.
Set environment variables:

Variable Source
DATABASE_URL Neon connection string
PINATA_JWT Pinata → API Keys → Files · Write scope only
GEMINI_API_KEY (optional) Google AI Studio

Variable	Source
`DATABASE_URL`	Neon connection string
`PINATA_JWT`	Pinata → API Keys → Files · Write scope only
`GEMINI_API_KEY`	(optional) Google AI Studio

Apply schema against the production DB:

DATABASE_URL= npx prisma db push
DATABASE_URL= npm run db:seed

Redeploy so Vercel bakes the latest env into the build.

prisma/schema.prisma is already configured for PostgreSQL in production and falls back to SQLite for local dev — no manual migrate dev needed.

🔐 Environment variables

Variable	Required	Purpose
`DATABASE_URL`	✅

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