diff --git a/src/StaticPHP/Command/Dev/DumpCapabilitiesCommand.php b/src/StaticPHP/Command/Dev/DumpCapabilitiesCommand.php
new file mode 100644
index 00000000..e2f3dba9
--- /dev/null
+++ b/src/StaticPHP/Command/Dev/DumpCapabilitiesCommand.php
@@ -0,0 +1,111 @@
+<?php
+
+declare(strict_types=1);
+
+namespace StaticPHP\Command\Dev;
+
+use StaticPHP\Command\BaseCommand;
+use StaticPHP\Package\PhpExtensionPackage;
+use StaticPHP\Registry\PackageLoader;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Helper\Table;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputOption;
+
+#[AsCommand('dev:dump-capabilities', 'Dump installable/buildable capabilities of all target and library packages')]
+class DumpCapabilitiesCommand extends BaseCommand
+{
+    protected bool $no_motd = true;
+
+    public function configure(): void
+    {
+        $this->addArgument('output', InputArgument::OPTIONAL, 'Output file path (JSON). Defaults to <ROOT_DIR>/dump-capabilities.json', ROOT_DIR . '/dump-capabilities.json');
+        $this->addOption('print', null, InputOption::VALUE_NONE, 'Print capabilities as a table to the terminal instead of writing to a file');
+    }
+
+    public function handle(): int
+    {
+        $result = $this->buildCapabilities();
+
+        if ($this->getOption('print')) {
+            $this->printTable($result);
+        } else {
+            $outputFile = $this->getArgument('output');
+            $json = json_encode($result, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
+            file_put_contents($outputFile, $json . PHP_EOL);
+            $this->output->writeln('<info>Dumped capabilities for ' . count($result) . " package(s) to: {$outputFile}</info>");
+        }
+
+        return static::SUCCESS;
+    }
+
+    /**
+     * Build the capabilities map for all relevant packages.
+     *
+     * For library/target/virtual-target:
+     *   buildable: string[]  - OS families with a registered #[BuildFor] function
+     *   installable: string[] - arch-os platforms with a declared binary
+     *
+     * For php-extension:
+     *   buildable: array<string, string>  - {OS: 'yes'|'wip'|'partial'|'no'} (v2 support semantics)
+     *   installable: (not applicable, omitted)
+     */
+    private function buildCapabilities(): array
+    {
+        $result = [];
+
+        // library / target / virtual-target
+        foreach (PackageLoader::getPackages(['library', 'target', 'virtual-target']) as $name => $pkg) {
+            $installable = [];
+            $artifact = $pkg->getArtifact();
+            if ($artifact !== null) {
+                $installable = $artifact->getBinaryPlatforms();
+            }
+
+            $result[$name] = [
+                'type' => $pkg->getType(),
+                'buildable' => $pkg->getBuildForOSList(),
+                'installable' => $installable,
+            ];
+        }
+
+        // php-extension: buildable uses v2 support-field semantics
+        foreach (PackageLoader::getPackages('php-extension') as $name => $pkg) {
+            /* @var PhpExtensionPackage $pkg */
+            $result[$name] = [
+                'type' => $pkg->getType(),
+                'buildable' => $pkg->getBuildSupportStatus(),
+            ];
+        }
+
+        return $result;
+    }
+
+    private function printTable(array $result): void
+    {
+        $table = new Table($this->output);
+        $table->setHeaders(['Package', 'Type', 'Buildable (OS)', 'Installable (arch-os)']);
+
+        foreach ($result as $name => $info) {
+            // For php-extension, buildable is a map {OS => status}
+            if (is_array($info['buildable']) && array_is_list($info['buildable']) === false) {
+                $buildableStr = implode("\n", array_map(
+                    static fn (string $os, string $status) => $status === 'yes' ? $os : "{$os} ({$status})",
+                    array_keys($info['buildable']),
+                    array_values($info['buildable'])
+                ));
+            } else {
+                $buildableStr = implode("\n", $info['buildable']) ?: '<none>';
+            }
+
+            $table->addRow([
+                $name,
+                $info['type'],
+                $buildableStr,
+                implode("\n", $info['installable'] ?? []) ?: '<n/a>',
+            ]);
+        }
+
+        $table->render();
+    }
+}
diff --git a/src/StaticPHP/Command/Dev/DumpStagesCommand.php b/src/StaticPHP/Command/Dev/DumpStagesCommand.php
index 4b20fe21..c757ab86 100644
--- a/src/StaticPHP/Command/Dev/DumpStagesCommand.php
+++ b/src/StaticPHP/Command/Dev/DumpStagesCommand.php
@@ -148,10 +148,11 @@ class DumpStagesCommand extends BaseCommand
 
     private function toRelativePath(string $absolutePath): string
     {
+        $normalized = realpath($absolutePath) ?: $absolutePath;
         $root = rtrim(ROOT_DIR, '/') . '/';
-        if (str_starts_with($absolutePath, $root)) {
-            return substr($absolutePath, strlen($root));
+        if (str_starts_with($normalized, $root)) {
+            return substr($normalized, strlen($root));
         }
-        return $absolutePath;
+        return $normalized;
     }
 }
diff --git a/src/StaticPHP/ConsoleApplication.php b/src/StaticPHP/ConsoleApplication.php
index 4afa221c..023ddf84 100644
--- a/src/StaticPHP/ConsoleApplication.php
+++ b/src/StaticPHP/ConsoleApplication.php
@@ -6,10 +6,12 @@ namespace StaticPHP;
 
 use StaticPHP\Command\BuildLibsCommand;
 use StaticPHP\Command\BuildTargetCommand;
+use StaticPHP\Command\Dev\DumpCapabilitiesCommand;
 use StaticPHP\Command\Dev\DumpStagesCommand;
 use StaticPHP\Command\Dev\EnvCommand;
 use StaticPHP\Command\Dev\IsInstalledCommand;
 use StaticPHP\Command\Dev\LintConfigCommand;
+use StaticPHP\Command\Dev\PackageInfoCommand;
 use StaticPHP\Command\Dev\PackLibCommand;
 use StaticPHP\Command\Dev\ShellCommand;
 use StaticPHP\Command\DoctorCommand;
@@ -69,6 +71,8 @@ class ConsoleApplication extends Application
             new LintConfigCommand(),
             new PackLibCommand(),
             new DumpStagesCommand(),
+            new DumpCapabilitiesCommand(),
+            new PackageInfoCommand(),
         ]);
 
         // add additional commands from registries