Date: April 8, 2026 Status: Initial open-source release completed, polish work remaining

Local directories:

• /Users/nymulislam/DEVELOP/studyield → public repo
• /Users/nymulislam/DEVELOP/studyield-private → private dev repo

Workflow: Develop on studyield-private (feature branches → develop → main), then periodically sync clean code to studyield (public).

• Removed backend/.env.production and frontend/.env.production from git tracking (contained real AWS, Stripe, OpenRouter, Google OAuth, Firebase keys)
• Sanitized backend/.env.example - removed real Apple Team ID, Apple Key ID, Firebase project ID, internal server references
• Sanitized frontend/.env.example - changed production URL to localhost
• Updated .gitignore comprehensively (env files, Firebase configs, IDE, internal docs, build artifacts, Flutter)
• Removed hardcoded server IPs from README
• Public repo has zero secrets in git history (fresh single-commit repo)

• Replaced proprietary INFO INLET license with Apache License 2.0
• Updated backend/package.json license: "UNLICENSED" → "Apache-2.0"
• Created NOTICE file with third-party dependency attribution (backend, frontend, mobile)

• Removed 13 internal markdown docs from mobile/ (IMPLEMENTATION_GUIDE, ONBOARDING_*, LOCALIZATION_PROGRESS, etc.)
• Removed ONBOARDING_IMPLEMENTATION_PLAN.md from root
• Removed deploy.yml from public repo (stays in private only)
• Removed OPEN_SOURCE_IMPLEMENTATION.md from public repo (stays in private only)

• Fixed CORS gateway fallback from wildcard '*' to ['http://localhost:3010', 'http://localhost:5189'] in all 5 gateway files
• Removed token substring debug logging from ws-auth.guard.ts (was leaking token previews)
• Replaced console.error with NestJS Logger in ai.controller.ts
• Removed internal "Peddlum" reference from main.ts comment

• Added DOMPurify sanitization for all dangerouslySetInnerHTML usage (5 files - XSS prevention)
• Created ErrorBoundary component (src/components/ErrorBoundary.tsx)
• Removed production API URL fallback (https://api.studyield.com → http://localhost:3010) in src/config/api.ts
• Disabled sourcemaps in production build (vite.config.ts)

• Changed API URL fallback from https://api.studyield.com to http://10.0.2.2:3010 in api_config.dart
• Enabled avoid_print lint rule in analysis_options.yaml
• Removed all token debug print() statements from auth_token_service.dart and token_storage.dart
• Pinned intl dependency from any to ^0.20.0 in pubspec.yaml

• CONTRIBUTING.md - dev setup, project structure, translations, code style, testing
• CODE_OF_CONDUCT.md - Contributor Covenant v2.1
• SECURITY.md - responsible disclosure, 48hr SLA, self-hosting best practices
• CHANGELOG.md - Keep a Changelog format
• .github/ISSUE_TEMPLATE/bug_report.yml - with platform dropdown (Web/iOS/Android/API)
• .github/ISSUE_TEMPLATE/feature_request.yml - with study-focused categories
• .github/ISSUE_TEMPLATE/config.yml - disabled blank issues, links to docs/discussions
• .github/PULL_REQUEST_TEMPLATE.md - type of change, testing checklist, code quality
• .github/dependabot.yml - weekly npm (grouped: nestjs, react, radix), monthly GH Actions
• .github/workflows/ci.yml - lint, typecheck, build for backend + frontend

• docker-compose.yml - full stack: PostgreSQL, Redis, Qdrant, ClickHouse, backend, frontend
• .env.docker - sensible defaults for Docker Compose
• start.sh - one-command dev startup with health checks

• .prettierrc - consistent formatting config
• .editorconfig - cross-editor consistency

• Complete rewrite with badges, hero section, quick start (Docker + manual), feature tables, tech stack, project structure

Key files to clean up:

How: Search for console.log, console.error, console.warn in all .ts/.tsx files. Remove or replace with a dev-only logger.

How: The avoid_print lint rule is now enabled. Run flutter analyze to find all violations. Replace print() with either:

• Remove completely (if just debug noise)
• Use debugPrint() (only shows in debug mode)
• Use a proper logging package like logger

Key TODOs that need implementation:

These files access process.env directly instead of NestJS ConfigService:

How: Inject ConfigService via constructor and use this.configService.get('CORS_ORIGINS').

File: backend/src/app.module.ts Action: Add Joi validation schema in ConfigModule.forRoot():

import * as Joi from 'joi';

ConfigModule.forRoot({
  validationSchema: Joi.object({
    JWT_ACCESS_SECRET: Joi.string().required().min(32),
    JWT_REFRESH_SECRET: Joi.string().required().min(32),
    DATABASE_HOST: Joi.string().required(),
    DATABASE_PORT: Joi.number().default(5432),
    REDIS_HOST: Joi.string().required(),
    OPENROUTER_API_KEY: Joi.string().required(),
    // ... etc
  }),
});

Current naming has conflicts (duplicate numbers):

001_initial.sql
001_add_exam_and_type_columns.sql   ← duplicate 001
006_mind_maps.sql
006_problem_chat_messages.sql       ← duplicate 006
010_blog.sql
010_create_user_fcm_tokens_table.sql ← duplicate 010

Action: Renumber to be sequential without gaps/duplicates.

File: backend/src/app.module.ts (lines ~38, 113-117) Action: Either remove commented-out PlanGuard code or add a clear comment why it's disabled.

Neither backend/Dockerfile nor frontend/Dockerfile exist yet. They're needed for docker-compose.yml to work.

FROM node:20-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

FROM node:20-alpine
WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package*.json ./
COPY --from=builder /app/migrations ./migrations
EXPOSE 3010
CMD ["node", "dist/main.js"]

FROM node:20-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

FROM nginx:alpine
COPY --from=builder /app/dist /usr/share/nginx/html
COPY nginx.conf /etc/nginx/conf.d/default.conf
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

Also needs frontend/nginx.conf for SPA routing:

server {
    listen 80;
    root /usr/share/nginx/html;
    index index.html;
    location / {
        try_files $uri $uri/ /index.html;
    }
}

cd studyield  # public repo root
npm init -y   # if no root package.json
npx husky init
npm install -D husky lint-staged

Add to root package.json:

{
  "lint-staged": {
    "backend/src/**/*.ts": ["eslint --fix", "prettier --write"],
    "frontend/src/**/*.{ts,tsx}": ["eslint --fix", "prettier --write"]
  }
}

npm install -D @commitlint/cli @commitlint/config-conventional

Create commitlint.config.js:

module.exports = { extends: ['@commitlint/config-conventional'] };

None of the 25 backend modules have README files. Each should have a brief doc explaining:

• What the module does
• Key endpoints
• Configuration needed
• Dependencies on other modules

Modules needing README (25 total): ai, analytics, auth, blog, chat, clickhouse, code-sandbox, content, database, email, exam-clone, firebase, knowledge-base, learning-paths, notifications, problem-solver, qdrant, queue, quiz, redis, research, storage, subscription, teach-back, users

Current package name com.infoinlet.studyield references internal company name. Needs changing to com.studyield.app or similar.

Files to update:

• mobile/android/app/build.gradle.kts (lines 9, 24) - namespace and applicationId
• mobile/android/app/src/main/kotlin/com/infoinlet/studyield/MainActivity.kt - package declaration + rename directory
• iOS bundle ID references in Xcode project

Note: This also requires updating Firebase project config, Google OAuth redirect URIs, and Apple sign-in service IDs.

The main README links to 12 translated versions that don't exist yet: README_JA.md, README_ZH.md, README_KO.md, README_ES.md, README_FR.md, README_DE.md, README_PT-BR.md, README_AR.md, README_BN.md, README_HI.md, README_RU.md

Can be generated from the English README.

The README has a placeholder comment for screenshots:

<!-- TODO: Add product screenshot/GIF here -->

Need actual screenshots/GIFs of:

• Dashboard overview
• Exam Clone feature in action
• Problem Solver multi-agent streaming
• Knowledge Graph visualization
• Chat with RAG citations
• Mobile app screens

Only 7 out of 160+ component files have aria-* attributes. Needs:

• Install eslint-plugin-jsx-a11y
• Add aria-labels to all interactive elements
• Ensure keyboard navigation works
• Add proper heading hierarchy

• Add Flutter analysis job to ci.yml
• Add code coverage reporting (Codecov)
• Add Docker build verification

When open-source improvements are ready:

# 1. Work in studyield-private, commit to develop
cd /Users/nymulislam/DEVELOP/studyield-private
git checkout develop
# ... make changes, commit ...

# 2. Copy changed files to public repo
rsync -av --exclude='.git' --exclude='node_modules' --exclude='dist' \
  --exclude='.env.production' --exclude='.env.local' --exclude='mobile/.env' \
  --exclude='OPEN_SOURCE_IMPLEMENTATION.md' --exclude='DEVELOPER_BRIEFING.md' \
  --exclude='.github/workflows/deploy.yml' --exclude='mobile/android/app/google-services.json' \
  --exclude='mobile/ios/Runner/GoogleService-Info.plist' \
  /Users/nymulislam/DEVELOP/studyield-private/ /Users/nymulislam/DEVELOP/studyield/

# 3. Commit and push in public repo
cd /Users/nymulislam/DEVELOP/studyield
git add -A
git commit -m "feat: description of changes"
git push origin main

Backend (NestJS): 25 modules, 120+ endpoints, 6 WebSocket namespaces
Frontend (React 19): 24+ pages, 15+ services, 12 languages
Mobile (Flutter): 22 feature modules, 12 languages

Database: PostgreSQL (27 tables, raw SQL - no ORM)
Cache: Redis 7+
Vector: Qdrant (semantic search)
Analytics: ClickHouse
Queue: BullMQ (async jobs)
Storage: Cloudflare R2
AI: OpenRouter (Claude, GPT via unified gateway)
Payments: Stripe
Real-time: Socket.io (6 namespaces: chat, exam-clone, problem-solver, teach-back, research, code-sandbox)
Auth: JWT (access + refresh) + Google OAuth + Apple OAuth