Add PackageInfoCommand to display package configuration information and support status

src/StaticPHP/Package/Package.php

@@ -138,6 +138,16 @@ abstract class Package
         return $this->stages;
     }
 
+    /**
+     * Get the list of OS families that have a registered build function (via #[BuildFor]).
+     *
+     * @return string[] e.g. ['Linux', 'Darwin']
+     */
+    public function getBuildForOSList(): array
+    {
+        return array_keys($this->build_functions);
+    }
+
     /**
      * Check if the package has a specific stage defined.
      *

src/StaticPHP/Package/PhpExtensionPackage.php

@@ -280,6 +280,27 @@ class PhpExtensionPackage extends Package
         $builder->deployBinary($soFile, $soFile, false);
     }
 
+    /**
+     * Get per-OS build support status for this php-extension.
+     *
+     * Rules (same as v2):
+     * - OS not listed in 'support' config  => 'yes' (fully supported)
+     * - OS listed with 'wip'               => 'wip'
+     * - OS listed with 'partial'           => 'partial'
+     * - OS listed with 'no'               => 'no'
+     *
+     * @return array<string, string> e.g. ['Linux' => 'yes', 'Darwin' => 'partial', 'Windows' => 'no']
+     */
+    public function getBuildSupportStatus(): array
+    {
+        $exceptions = $this->extension_config['support'] ?? [];
+        $result = [];
+        foreach (['Linux', 'Darwin', 'Windows'] as $os) {
+            $result[$os] = $exceptions[$os] ?? 'yes';
+        }
+        return $result;
+    }
+
     /**
      * Register default stages if not already defined by attributes.
      * This is called after all attributes have been loaded.