CRITICAL: Fix PHP-FPM pool detection - search by domain name not username

Problem:
- find_fpm_pool_config() only searched for $username.conf
- cPanel EA-PHP names pool configs as $domain.conf
- Example: pickledperil.com.conf NOT pickledperil.conf
- Result: 'No PHP-FPM pools found' error

Fix:
- Modified find_fpm_pool_config() to try domain-based naming first
- Falls back to username-based naming for compatibility
- Search order: domain → username
- Applies to all control panels (cPanel, Plesk, InterWorx)

Impact:
- PHP-FPM pools now detected correctly
- Memory capacity analysis now works
- All pool-based features functional

Test:
- find_fpm_pool_config('pickledperil', 'pickledperil.com')
- Returns: /opt/cpanel/ea-php81/root/etc/php-fpm.d/pickledperil.com.conf

lib/php-detector.sh

@@ -208,23 +208,38 @@ find_fpm_pool_config() {
 
     local pool_config=""
 
-    # cPanel EA-PHP pools
+    # cPanel EA-PHP pools - try domain first, then username
     if [ -n "$php_version" ]; then
+        # Try domain-based config first
+        if [ -n "$domain" ]; then
+            pool_config="/opt/cpanel/$php_version/root/etc/php-fpm.d/$domain.conf"
+            [ -f "$pool_config" ] && echo "$pool_config" && return 0
+        fi
+        # Try username-based config
         pool_config="/opt/cpanel/$php_version/root/etc/php-fpm.d/$username.conf"
         [ -f "$pool_config" ] && echo "$pool_config" && return 0
     fi
 
-    # Search all EA-PHP versions
+    # Search all EA-PHP versions - try domain first, then username
+    if [ -n "$domain" ]; then
+        pool_config=$(find /opt/cpanel/ea-php*/root/etc/php-fpm.d/ -name "$domain.conf" 2>/dev/null | head -1)
+        [ -n "$pool_config" ] && echo "$pool_config" && return 0
+    fi
+
     pool_config=$(find /opt/cpanel/ea-php*/root/etc/php-fpm.d/ -name "$username.conf" 2>/dev/null | head -1)
     [ -n "$pool_config" ] && echo "$pool_config" && return 0
 
     # Plesk pools
+    if [ -n "$domain" ]; then
         pool_config="/etc/php-fpm.d/plesk-php*-fpm/$domain.conf"
         [ -f "$pool_config" ] && echo "$pool_config" && return 0
+    fi
 
     # InterWorx pools
+    if [ -n "$domain" ]; then
         pool_config="/home/$username/var/$domain/php-fpm.conf"
         [ -f "$pool_config" ] && echo "$pool_config" && return 0
+    fi
 
     return 1
 }