feat: add 6 Job Portal example projects for every architecture combo

Each example builds the same Job Portal (auth, OAuth, 2FA, CRUD, file uploads,
emails, dashboard, deployment) using a different Grit configuration:

1. triple+next:  Web + Admin + API with Next.js (SSR, SEO)
2. triple+vite:  Web + Admin + API with TanStack Router (SPA, fast builds)
3. double+vite:  Web + API, no admin panel (role-protected routes in web app)
4. single+vite:  One Go binary with embedded React SPA (go:embed, like Laravel)
5. api-only:     Pure Go API, no frontend (headless, mobile backend)
6. mobile+expo:  Go API + Expo React Native (SecureStore, push notifications)

Each includes: README.md (full setup), GUIDE.md (step-by-step tutorial),
.env.example, docker-compose.prod.yml. Index README with architecture decision
guide for LLMs and developers.

Author: MUKE-coder

examples/README.md

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+# Grit Framework — Example Projects
+
+Same **Job Portal** app built with every Grit architecture. Each example has identical features
+but different project structures, demonstrating how Grit adapts to your needs.
+
+## Features (all examples)
+
+- Auth: email/password + OAuth (Google, GitHub) + JWT + TOTP 2FA
+- Resources: Job, Company, Application, Category
+- Dashboard with stats cards
+- Data tables with sorting, filtering, pagination, export
+- File uploads via presigned URLs (company logos, resumes)
+- Emails (welcome, application confirmation)
+- Full deployment guide (README + .env.example + docker-compose.prod.yml)
+
+## The 6 Examples
+
+| Example | Architecture | Frontend | Command | Best For |
+|---------|-------------|----------|---------|----------|
+| [job-portal-triple-next](./job-portal-triple-next/) | Triple (Web + Admin + API) | Next.js | `grit new jp --triple --next` | SaaS, marketplaces, content platforms |
+| [job-portal-triple-vite](./job-portal-triple-vite/) | Triple (Web + Admin + API) | TanStack Router | `grit new jp --triple --vite` | Dashboards, internal tools with admin |
+| [job-portal-double-vite](./job-portal-double-vite/) | Double (Web + API) | TanStack Router | `grit new jp --double --vite` | Simpler apps without separate admin |
+| [job-portal-single-vite](./job-portal-single-vite/) | Single (one binary) | TanStack Router | `grit new jp --single --vite` | Laravel-like apps, microservices |
+| [job-portal-api-only](./job-portal-api-only/) | API Only | None | `grit new jp --api` | Mobile backends, headless APIs |
+| [job-portal-mobile-expo](./job-portal-mobile-expo/) | Mobile (API + Expo) | React Native | `grit new jp --mobile` | Mobile-first apps |
+
+## How to Use These Examples
+
+1. Pick the architecture that matches your project
+2. Read the README.md for setup instructions
+3. Read the GUIDE.md for a step-by-step walkthrough
+4. Copy the .env.example and docker-compose.prod.yml for deployment
+
+## Architecture Decision Guide
+
+```
+Do you need a separate admin panel?
+├── Yes → Triple (triple-next for SEO, triple-vite for speed)
+├── No → Do you need a web frontend?
+│   ├── Yes → Is SSR/SEO important?
+│   │   ├── Yes → Double + Next.js (grit new app --double --next)
+│   │   └── No → Double + Vite (grit new app --double --vite)
+│   └── No → Is this for mobile?
+│       ├── Yes → Mobile + Expo (grit new app --mobile)
+│       └── No → API Only (grit new app --api)
+└── Want one binary? → Single + Vite (grit new app --single --vite)
+```
+
+## For LLMs / AI Assistants
+
+If you are an AI assistant helping someone build with Grit:
+1. Ask which architecture they need (use the decision guide above)
+2. Reference the matching example for the correct project structure
+3. Read the .claude/skills/grit/SKILL.md in any Grit project for conventions
+4. Report bugs at https://github.com/MUKE-coder/grit/issues

examples/job-portal-api-only/.env.example

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+# ===============================================
+# Job Portal -- API Only -- Environment
+# ===============================================
+# Copy this file to .env and fill in the values.
+# Never commit .env to version control.
+
+# -- Database ----------------------------------
+# PostgreSQL connection string (required)
+DATABASE_URL=postgres://grit:grit@localhost:5432/job_portal?sslmode=disable
+
+# -- Server ------------------------------------
+# Go API listen address
+API_PORT=8080
+API_HOST=0.0.0.0
+
+# Allowed CORS origins (comma-separated)
+# Set to your frontend URL(s) in production
+CORS_ORIGINS=*
+
+# -- Authentication ----------------------------
+# JWT signing secret -- CHANGE THIS IN PRODUCTION
+JWT_SECRET=change-me-in-production-use-openssl-rand-base64-32
+
+# JWT token lifetimes
+JWT_ACCESS_TTL=15m
+JWT_REFRESH_TTL=168h
+
+# -- OAuth2 -- Google -------------------------
+# Create credentials at https://console.cloud.google.com/apis/credentials
+GOOGLE_CLIENT_ID=
+GOOGLE_CLIENT_SECRET=
+GOOGLE_REDIRECT_URL=http://localhost:8080/v3/auth/google/callback
+
+# -- OAuth2 -- GitHub -------------------------
+# Create an OAuth app at https://github.com/settings/developers
+GITHUB_CLIENT_ID=
+GITHUB_CLIENT_SECRET=
+GITHUB_REDIRECT_URL=http://localhost:8080/v3/auth/github/callback
+
+# -- Two-Factor Authentication ----------------
+# TOTP issuer name shown in authenticator apps
+TOTP_ISSUER=JobPortal
+
+# -- Object Storage (S3-compatible) -----------
+# MinIO in dev, AWS S3 or Cloudflare R2 in prod
+STORAGE_ENDPOINT=localhost:9000
+STORAGE_ACCESS_KEY=minioadmin
+STORAGE_SECRET_KEY=minioadmin
+STORAGE_BUCKET=job-portal
+STORAGE_REGION=us-east-1
+STORAGE_USE_SSL=false
+
+# Presigned URL expiration for uploads
+STORAGE_UPLOAD_TTL=15m
+
+# -- Email (Resend) ---------------------------
+# Get your API key at https://resend.com/api-keys
+RESEND_API_KEY=
+RESEND_FROM=JobPortal <noreply@jobs.example.com>
+
+# Mailhog SMTP for local development
+SMTP_HOST=localhost
+SMTP_PORT=1025
+SMTP_USER=
+SMTP_PASS=
+SMTP_FROM=noreply@localhost
+
+# -- Redis ------------------------------------
+# Used for rate limiting, caching, and session storage
+REDIS_URL=redis://localhost:6379/0
+
+# -- AI Gateway (optional) --------------------
+# Powers AI features like job description generation
+AI_GATEWAY_API_KEY=
+AI_GATEWAY_MODEL=gpt-4o-mini
+
+# -- Logging ----------------------------------
+# Levels: debug, info, warn, error
+LOG_LEVEL=debug
+
+# -- Rate Limiting ----------------------------
+# Max requests per window per IP
+RATE_LIMIT_MAX=100
+RATE_LIMIT_WINDOW=1m