Convert to template with dynamic configuration

Add comprehensive environment-based configuration system:
- Created config.js module to centralize all environment variables
- Updated server.js to use config module for all settings
- Added /api/config endpoint to expose company info to frontend
- Created init.js to dynamically inject config into HTML pages
- Updated .env.example with comprehensive configuration options
- Added data attributes to index.html for dynamic content
- Updated Dockerfile to include config.js

This allows users to customize:
- Company name, tagline, and description
- Branding colors (primary, accent, dark)
- Contact information (email, phone, address, hours)
- Social media links
- About page content
- Services offered

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.env.example

@@ -1,16 +1,110 @@
+# ===================================
+# AI Recruitment Site - Configuration
+# ===================================
+# Copy this file to .env and customize for your company
+
+# ===================================
+# Company Information
+# ===================================
+COMPANY_NAME=Your Recruitment Firm
+COMPANY_TAGLINE=Finding the Perfect Match for Your Career
+COMPANY_DESCRIPTION=We specialize in connecting talented professionals with exceptional opportunities across various industries.
+
+# ===================================
+# Company Branding (Colors)
+# ===================================
+# Primary brand color (e.g., #2563EB for blue)
+PRIMARY_COLOR=#2563EB
+# Accent/success color (e.g., #059669 for green)
+ACCENT_COLOR=#059669
+# Dark/secondary color (e.g., #1E293B)
+DARK_COLOR=#1E293B
+
+# ===================================
+# Contact Information
+# ===================================
+CONTACT_EMAIL=info@yourcompany.com
+CONTACT_PHONE=+1 (555) 123-4567
+CONTACT_ADDRESS=123 Business St, Suite 100, City, State 12345
+
+# Social Media Links (leave empty to hide)
+SOCIAL_LINKEDIN=https://linkedin.com/company/yourcompany
+SOCIAL_TWITTER=https://twitter.com/yourcompany
+SOCIAL_FACEBOOK=
+
+# ===================================
+# Deployment Configuration
+# ===================================
+# Your custom subdomain (e.g., 'yourname' becomes yourname.recruitai.startanaicompany.com)
+SUBDOMAIN=yourname
+
+# Your Gitea username and repository name
+GITEA_USERNAME=your-gitea-username
+GITEA_REPO_NAME=ai-recruit-site-template
+
+# ===================================
+# Application Settings
+# ===================================
+NODE_ENV=production
+PORT=3000
+
+# Session secret (will be auto-generated if empty)
+SESSION_SECRET=
+
+# ===================================
 # Database Configuration
+# ===================================
+# PostgreSQL connection details
 DB_HOST=postgres
 DB_PORT=5432
 DB_NAME=recruitment
 DB_USER=postgres
-DB_PASSWORD=changeme123
+# Database password (will be auto-generated if empty)
+DB_PASSWORD=
 
-# Application Configuration
-PORT=3000
-NODE_ENV=production
+# ===================================
+# API Tokens (for deployment script)
+# ===================================
+# These should be set as environment variables, NOT in this file
+# COOLIFY_API_TOKEN=your-coolify-api-token
+# GITEA_API_TOKEN=your-gitea-api-token
 
-# Session Secret (CHANGE THIS IN PRODUCTION!)
-SESSION_SECRET=your-very-secret-session-key-change-this-in-production
+# ===================================
+# Feature Configuration
+# ===================================
+# Maximum CV file size in MB
+MAX_CV_SIZE_MB=5
 
-# Optional: Application URL
-APP_URL=http://localhost:3000
+# Allowed CV file types (comma-separated)
+ALLOWED_CV_TYPES=application/pdf,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document
+
+# ===================================
+# About Page Content
+# ===================================
+ABOUT_MISSION=Our mission is to bridge the gap between exceptional talent and outstanding opportunities.
+ABOUT_VISION=We envision a world where every professional finds their perfect career match.
+ABOUT_VALUES=Integrity, Excellence, Innovation, Partnership
+
+# ===================================
+# Services Offered (comma-separated)
+# ===================================
+SERVICES_LIST=Executive Search,Contract Staffing,Permanent Placement,Career Consulting,Talent Assessment,Industry Expertise
+
+# ===================================
+# Contact Page Settings
+# ===================================
+# Email address where contact form submissions are sent
+CONTACT_FORM_RECIPIENT=info@yourcompany.com
+
+# Business hours
+BUSINESS_HOURS=Monday - Friday: 9:00 AM - 6:00 PM
+
+# ===================================
+# Email Configuration (Optional)
+# ===================================
+# If you want to send email notifications
+SMTP_HOST=
+SMTP_PORT=587
+SMTP_USER=
+SMTP_PASSWORD=
+SMTP_FROM=noreply@yourcompany.com