feat(metrics): add pressure threshold helper

app/Support/Metrics/PressureLevel.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Support\Metrics;
+
+class PressureLevel
+{
+    public static function for(?float $percent, string $kind = 'default'): string
+    {
+        if ($percent === null) {
+            return 'ok';
+        }
+
+        [$warn, $error] = $kind === 'disk' ? [80.0, 90.0] : [70.0, 90.0];
+
+        return match (true) {
+            $percent >= $error => 'error',
+            $percent >= $warn => 'warning',
+            default => 'ok',
+        };
+    }
+
+    public static function textClass(string $level): string
+    {
+        return match ($level) {
+            'error' => 'text-red-500 dark:text-red-400',
+            'warning' => 'text-orange-500 dark:text-warning',
+            default => 'text-black dark:text-fg',
+        };
+    }
+
+    public static function barClass(string $level): string
+    {
+        return match ($level) {
+            'error' => 'bg-red-500 dark:bg-red-400',
+            'warning' => 'bg-orange-500 dark:bg-warning',
+            default => 'bg-neutral-400 dark:bg-white/30',
+        };
+    }
+}