Add slug support and new admin features

REMOTE-BLOGS-GUIDE.md

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+# Remote Blog Management - Complete Guide
+
+## 🎯 Goal
+Remove local blog files and work exclusively with remote server blogs.
+
+## 📋 Options Available
+
+### Option 1: Quick Remove Local Blogs
+```bash
+# Run this in your bizoni directory
+./remove-local-blogs.sh
+```
+
+### Option 2: Ubuntu Server Management Script
+```bash
+# Upload to your Ubuntu server and run
+./ubuntu-remote-blogs.sh migrate
+```
+
+### Option 3: Backend Configuration (Recommended)
+Update backend to work with remote blogs only.
+
+## 🚀 Recommended Deployment Steps
+
+### Step 1: Remove Local Blogs
+```bash
+cd /home/tdvorak/Desktop/HTML_Projekty/bizoni
+./remove-local-blogs.sh
+```
+
+### Step 2: Update Backend Configuration
+The backend is now configured to work with remote blogs at `/var/www/bizoni/blog`.
+
+You can set the remote path with environment variable:
+```bash
+export REMOTE_BLOG_DIR="/var/www/bizoni/blog"
+```
+
+### Step 3: Deploy Backend to Server
+1. Build the updated backend
+2. Deploy to your server
+3. Set REMOTE_BLOG_DIR environment variable
+
+### Step 4: Run Migration on Server
+```bash
+# On your Ubuntu server
+./ubuntu-remote-blogs.sh migrate
+```
+
+## 📁 File Structure After Changes
+
+### Local (Development)
+```
+bizoni/
+├── backend/main.go          # Updated for remote blogs
+├── admin/new.html           # Updated with new fields
+├── js/admin-auth.js         # Login persistence
+├── tools/migrate_slugs.go   # Migration tool
+├── remove-local-blogs.sh    # Local cleanup script
+└── ubuntu-remote-blogs.sh   # Server management script
+```
+
+### Server (Production)
+```
+/var/www/bizoni/
+├── blog/
+│   ├── 0000.html            # Original numeric files
+│   ├── 0001.html
+│   ├── jdeme-do-finale.html # New slug files
+│   └── 1-zapas-final-score.html
+├── img/blog/
+│   ├── 0000.png
+│   └── 0001.png
+└── backend                  # Updated backend
+```
+
+## 🔧 Ubuntu Server Script Usage
+
+### List All Blogs
+```bash
+./ubuntu-remote-blogs.sh list
+```
+
+### Migrate All Blogs to Slugs
+```bash
+./ubuntu-remote-blogs.sh migrate
+```
+
+### Show Blog Info
+```bash
+./ubuntu-remote-blogs.sh info 0030
+```
+
+### Add Slug to Specific Blog
+```bash
+./ubuntu-remote-blogs.sh add-slug 0030
+```
+
+### Create Backup
+```bash
+./ubuntu-remote-blogs.sh backup
+```
+
+## 🌐 URL Structure After Migration
+
+### Before
+- `/blog/0030.html`
+- `/blog/0001.html`
+
+### After
+- `/blog/jdeme-do-finale` (clean URL)
+- `/blog/1-zapas-final-score`
+- `/blog/0030.html` (still works for backward compatibility)
+
+## ⚠️ Important Notes
+
+1. **Backup First**: Always create backup before migration
+2. **Test Locally**: Test backend with REMOTE_BLOG_DIR set to local copy
+3. **Deploy Gradually**: Deploy backend first, then run migration
+4. **Environment Variables**: Use REMOTE_BLOG_DIR for flexibility
+
+## 🔄 Environment Variables
+
+Set these on your server:
+
+```bash
+# Path to remote blog directory
+export REMOTE_BLOG_DIR="/var/www/bizoni/blog"
+
+# Port for backend (if needed)
+export PORT="8080"
+
+# Static files path
+export STATIC_PATH="/var/www/bizoni"
+```
+
+## 🚨 Troubleshooting
+
+### Backend Can't Find Blogs
+```bash
+# Check if directory exists
+ls -la /var/www/bizoni/blog
+
+# Set correct path
+export REMOTE_BLOG_DIR="/correct/path/to/blogs"
+```
+
+### Migration Script Fails
+```bash
+# Make script executable
+chmod +x ubuntu-remote-blogs.sh
+
+# Update paths in script
+nano ubuntu-remote-blogs.sh
+```
+
+### Permission Issues
+```bash
+# Fix permissions on server
+sudo chown -R www-data:www-data /var/www/bizoni/blog
+sudo chmod -R 755 /var/www/bizoni/blog
+```
+
+## 📞 Next Steps
+
+1. **Choose your option** (1, 2, or 3)
+2. **Remove local blogs** with the provided script
+3. **Deploy updated backend** to server
+4. **Run migration** on server
+5. **Test new URLs** and admin interface
+
+Your blog system will then work entirely with remote server blogs! 🎉