Enhance onboarding script and documentation for developer setup. Added functions for Git configuration, SSH key generation, and connection testing. Updated README with setup instructions and usage tips.

README.md

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+# Developer Onboarding
+
+A comprehensive developer environment setup toolkit that automates the installation of essential tools and configures Git and SSH for seamless development workflows.
+
+## Overview
+
+This project provides scripts and documentation to quickly set up a development environment with all the necessary tools, from basic system utilities to modern development tools and containerization platforms.
+
+## Quick Start
+
+### Prerequisites
+- Ubuntu/Debian-based Linux system
+- `sudo` privileges for package installation
+- Internet connection
+
+### Setup Process
+
+1. **Run the onboarding script:**
+   ```bash
+   chmod +x onboarding.sh
+   ./onboarding.sh
+   ```
+
+2. **Follow the interactive prompts:**
+   - Configure Git username and email
+   - Generate SSH keys for secure Git operations
+   - Test SSH connection to your Git server
+
+## What Gets Configured
+
+### Git Configuration
+- Global username and email setup
+- Credential caching for convenience
+- Color output for better readability
+
+### SSH Key Management
+- Ed25519 SSH key generation (modern, secure)
+- Automatic key copying to clipboard
+- SSH connection testing to Git server
+
+## Files in This Repository
+
+- `onboarding.sh` - Main interactive setup script
+- `onboarding.sh.save` - Backup/alternative version
+- `applications.md` - Complete list of installed applications
+- `README.md` - This file
+
+## Usage Tips
+
+- The script is idempotent - safe to run multiple times
+- SSH keys are only generated if they don't already exist
+- Git config is only set if not already configured
+- All operations are interactive with user confirmation
+
+## Customization
+
+You can modify the `onboarding.sh` script to:
+- Change the Git server URL (currently set to `10.0.30.169:3000`)
+- Adjust SSH key types or parameters
+- Add additional Git configuration options
+
+## Support
+
+If you encounter issues:
+1. Ensure you have the required permissions
+2. Check network connectivity to the Git server
+3. Verify SSH key permissions (`chmod 600 ~/.ssh/id_ed25519`)
+
+## Contributing
+
+Feel free to submit issues or pull requests to improve the onboarding experience.

onboarding.sh

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+#!/bin/bash
+# Git + SSH onboarding script for developer environments.
+# Prompts for missing git config, sets recommended options, and helps create and test SSH keys.
+# Author: [ilia] | Created: [Aug 28, 2025]
+
+set -euo pipefail  # Exit on error, unset vars, and in pipe failures
+
+## FUNCTIONS
+
+# Prompt for and set global git config if missing
+set_git_config() {
+  local key="$1"
+  local prompt="$2"
+  if ! git config --get "user.${key}" &>/dev/null; then
+    read -rp "$prompt" value
+    git config --global "user.${key}" "$value"
+  fi
+}
+
+# Create ed25519 SSH key if missing
+setup_ssh_key() {
+  if [ ! -f ~/.ssh/id_ed25519 ]; then
+    read -rp "No ed25519 SSH key found! Create one for Git usage? (y/n): " sshyn
+    if [[ "$sshyn" =~ ^[Yy]$ ]]; then
+      ssh-keygen -t ed25519 -C "$(git config --get user.email)"
+    fi
+  fi
+}
+
+# Show public SSH key and copy to clipboard
+show_and_copy_ssh_key() {
+  if [ -f ~/.ssh/id_ed25519.pub ]; then
+    echo "Your public ed25519 SSH key:"
+    cat ~/.ssh/id_ed25519.pub
+    if command -v xclip &>/dev/null; then
+      xclip -sel clip < ~/.ssh/id_ed25519.pub
+      echo "Public key copied to clipboard."
+    fi
+    echo "Add this key to Gitea: http://10.0.30.169:3000/user/settings/keys"
+  else
+    echo "No public ed25519 SSH key found. You might need to generate it."
+  fi
+}
+
+# SSH connection test
+test_ssh_connection() {
+  read -rp "Test SSH connection to Gitea server? (y/n): " testssh
+  if [[ "$testssh" =~ ^[Yy]$ ]]; then
+    ssh -T gitvm@10.0.30.169
+  fi
+}
+
+## MAIN LOGIC
+
+echo "Checking Git global config..."
+set_git_config "name" "Enter your Git user name: "
+set_git_config "email" "Enter your Git email: "
+
+# Set best-practice Git global defaults
+git config --global credential.helper cache
+git config --global color.ui auto
+
+echo
+echo "Current global Git configuration:"
+git config --global --list
+
+setup_ssh_key
+show_and_copy_ssh_key
+test_ssh_connection
+
+echo
+echo "Setup complete!"