Document git-based deployment flow and update scripts

- Add comprehensive deployment architecture documentation to DEPLOYMENT.md
- Include ASCII diagram showing local → Gitea → Unraid flow
- Document all three deployment scripts with examples
- Update scripts to use root@192.168.2.61 for SSH authentication
- Add automatic SSH config setup in deploy.sh for git server port 28
- Include troubleshooting section for common deployment issues

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

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

deploy.sh

@@ -4,7 +4,7 @@
 set -e
 
 # Configuration
-UNRAID_HOST="${UNRAID_HOST:-192.168.2.61}"
+UNRAID_HOST="${UNRAID_HOST:-root@192.168.2.61}"
 REMOTE_PATH="/mnt/user/docker/custom-dockers/discord-stock-bot"
 GIT_REPO="git@git.michaelsimard.ca:msimard/discord-stock-bot.git"
 
@@ -13,6 +13,19 @@ echo "Deploying discord-stock-bot to ${UNRAID_HOST}..."
 ssh ${UNRAID_HOST} bash << EOF
 set -e
 
+# Ensure SSH config for git server (port 28)
+mkdir -p ~/.ssh
+chmod 700 ~/.ssh
+if ! grep -q "^Host git.michaelsimard.ca" ~/.ssh/config 2>/dev/null; then
+    echo "Configuring SSH for git.michaelsimard.ca (port 28)..."
+    cat >> ~/.ssh/config << 'SSHCONFIG'
+
+Host git.michaelsimard.ca
+    Port 28
+SSHCONFIG
+    chmod 600 ~/.ssh/config
+fi
+
 # Clone or pull repository
 if [ -d "${REMOTE_PATH}/.git" ]; then
     echo "Repository exists, pulling latest changes..."