feat: auto-enrich IPs with country flags across all admin pages

DB-IP plugin onAfterRender scans admin HTML for IP addresses in
<code> tags, looks up geolocation, prepends country flag emoji and
adds city/region/country hover tooltip. Caches lookups per request,
skips private/loopback IPs and already-enriched elements.

source/packages/plg_system_mokosuiteclient_dbip/src/Extension/DBIP.php

@@ -23,6 +23,7 @@ class DBIP extends CMSPlugin implements SubscriberInterface
 	{
 		return [
 			'onAfterInitialise' => 'onAfterInitialise',
+			'onAfterRender'     => 'onAfterRender',
 		];
 	}
 
@@ -80,4 +81,92 @@ class DBIP extends CMSPlugin implements SubscriberInterface
 
 		DBIPHelper::downloadCityDb($url);
 	}
+
+	/**
+	 * Scan rendered admin HTML for IP addresses and enrich with geo flags + tooltips.
+	 */
+	public function onAfterRender(): void
+	{
+		$app = $this->getApplication();
+
+		if (!$app->isClient('administrator'))
+		{
+			return;
+		}
+
+		if ($app->getDocument()->getType() !== 'html')
+		{
+			return;
+		}
+
+		$body = $app->getBody();
+
+		if (empty($body))
+		{
+			return;
+		}
+
+		$ipv4 = '(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?)';
+		$ipv6 = '(?:[0-9a-fA-F]{1,4}:){2,7}[0-9a-fA-F]{1,4}(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?))?';
+		$pattern = '#<code(?:\s[^>]*)?>(' . $ipv4 . '|' . $ipv6 . ')</code>#';
+
+		$cache = [];
+
+		$newBody = preg_replace_callback($pattern, function ($m) use (&$cache) {
+			$fullMatch = $m[0];
+			$ip        = $m[1];
+
+			// Skip private/loopback
+			if (filter_var($ip, \FILTER_VALIDATE_IP, \FILTER_FLAG_NO_PRIV_RANGE | \FILTER_FLAG_NO_RES_RANGE) === false)
+			{
+				return $fullMatch;
+			}
+
+			// Already enriched (has a title attribute)
+			if (strpos($fullMatch, 'title=') !== false)
+			{
+				return $fullMatch;
+			}
+
+			if (!isset($cache[$ip]))
+			{
+				$cache[$ip] = DBIPHelper::lookup($ip);
+			}
+
+			$geo = $cache[$ip];
+
+			if ($geo === null || empty($geo['country_code']))
+			{
+				return $fullMatch;
+			}
+
+			$cc   = strtoupper($geo['country_code']);
+			$flag = self::countryFlag($cc);
+
+			$parts   = array_filter([$geo['city'], $geo['region'], $geo['country_name']]);
+			$tooltip = htmlspecialchars(implode(', ', $parts), \ENT_QUOTES, 'UTF-8');
+			$escaped = htmlspecialchars($ip, \ENT_QUOTES, 'UTF-8');
+
+			return $flag . ' <code title="' . $tooltip . '" style="cursor:help;">' . $escaped . '</code>';
+		}, $body);
+
+		if ($newBody !== null && $newBody !== $body)
+		{
+			$app->setBody($newBody);
+		}
+	}
+
+	private static function countryFlag(string $cc): string
+	{
+		if (\strlen($cc) !== 2)
+		{
+			return '';
+		}
+
+		$cc     = strtoupper($cc);
+		$first  = mb_chr(0x1F1E6 + \ord($cc[0]) - \ord('A'));
+		$second = mb_chr(0x1F1E6 + \ord($cc[1]) - \ord('A'));
+
+		return $first . $second;
+	}
 }