diff --git a/demos/hello-world/bin/be.php b/demos/hello-world/bin/be.php
new file mode 100644
index 0000000..1a2109e
--- /dev/null
+++ b/demos/hello-world/bin/be.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\Hello;
+
+require dirname(__DIR__) . '/vendor/autoload.php';
+
+use Be\Framework\BecomingInterface;
+use Be\Pattern\Hello\Final\Hello;
+use Be\Pattern\Hello\Input\HelloInput;
+use Be\Pattern\Hello\Module\DevModule;
+use Ray\Di\Injector;
+
+use function assert;
+use function dirname;
+use function escapeshellarg;
+use function passthru;
+use function printf;
+
+$injector = new Injector(new DevModule());
+$becoming = $injector->getInstance(BecomingInterface::class);
+
+$final = $becoming(new HelloInput(name: 'World'));
+assert($final instanceof Hello);
+printf("greeting: %s\n", $final->greeting);
+
+echo "\n--- stree ---\n";
+passthru('vendor/bin/stree ' . escapeshellarg(dirname(__DIR__) . '/var/log/hello-world.json'));
diff --git a/demos/hello-world/src/Becoming/DevBecoming.php b/demos/hello-world/src/Becoming/DevBecoming.php
new file mode 100644
index 0000000..c208246
--- /dev/null
+++ b/demos/hello-world/src/Becoming/DevBecoming.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\Hello\Becoming;
+
+use Be\Framework\Becoming;
+use Be\Framework\BecomingInterface;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Override;
+
+use function dirname;
+use function file_put_contents;
+use function is_dir;
+use function json_encode;
+use function mkdir;
+
+use const JSON_PRETTY_PRINT;
+use const JSON_UNESCAPED_SLASHES;
+use const JSON_UNESCAPED_UNICODE;
+
+final class DevBecoming implements BecomingInterface
+{
+    public function __construct(
+        private readonly Becoming $becoming,
+        private readonly SemanticLoggerInterface $logger,
+    ) {
+    }
+
+    #[Override]
+    public function __invoke(object $input): object
+    {
+        try {
+            return ($this->becoming)($input);
+        } finally {
+            $dir = dirname(__DIR__, 2) . '/var/log';
+            if (! is_dir($dir)) {
+                mkdir($dir, 0755, true);
+            }
+
+            file_put_contents(
+                $dir . '/hello-world.json',
+                json_encode($this->logger->flush(), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . PHP_EOL,
+            );
+        }
+    }
+}
diff --git a/demos/hello-world/src/Module/AppModule.php b/demos/hello-world/src/Module/AppModule.php
index 4d83001..1b6107f 100644
--- a/demos/hello-world/src/Module/AppModule.php
+++ b/demos/hello-world/src/Module/AppModule.php
@@ -4,15 +4,14 @@
 
 namespace Be\Pattern\Hello\Module;
 
-use Be\Pattern\Hello\Reason\Greeting;
 use Be\Framework\Module\BeModule;
+use Be\Pattern\Hello\Reason\Greeting;
 use Ray\Di\AbstractModule;
 
 final class AppModule extends AbstractModule
 {
     protected function configure(): void
     {
-        // Install BeModule with demo's semantic namespace
         $this->install(new BeModule('Be\Pattern\Hello\Semantic'));
 
         $this->bind(Greeting::class);
diff --git a/demos/hello-world/src/Module/DevModule.php b/demos/hello-world/src/Module/DevModule.php
new file mode 100644
index 0000000..8717ae1
--- /dev/null
+++ b/demos/hello-world/src/Module/DevModule.php
@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\Hello\Module;
+
+use Be\Framework\Becoming;
+use Be\Framework\BecomingInterface;
+use Be\Pattern\Hello\Becoming\DevBecoming;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Ray\Di\AbstractModule;
+use Ray\Di\Scope;
+
+final class DevModule extends AbstractModule
+{
+    protected function configure(): void
+    {
+        $this->install(new AppModule());
+
+        $this->bind(Becoming::class);
+        $this->bind(BecomingInterface::class)->to(DevBecoming::class);
+        $this->bind(SemanticLoggerInterface::class)
+            ->toProvider(DevSemanticLoggerProvider::class)
+            ->in(Scope::SINGLETON);
+    }
+}
diff --git a/demos/hello-world/src/Module/DevSemanticLoggerProvider.php b/demos/hello-world/src/Module/DevSemanticLoggerProvider.php
new file mode 100644
index 0000000..6692934
--- /dev/null
+++ b/demos/hello-world/src/Module/DevSemanticLoggerProvider.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\Hello\Module;
+
+use Koriym\SemanticLogger\DevSemanticLogger;
+use Koriym\SemanticLogger\SemanticLogger;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Override;
+use Ray\Di\ProviderInterface;
+
+/** @implements ProviderInterface<SemanticLoggerInterface> */
+final class DevSemanticLoggerProvider implements ProviderInterface
+{
+    #[Override]
+    public function get(): SemanticLoggerInterface
+    {
+        return new DevSemanticLogger(new SemanticLogger());
+    }
+}
diff --git a/demos/hello-world/var/log/hello-world.json b/demos/hello-world/var/log/hello-world.json
new file mode 100644
index 0000000..d7c3a53
--- /dev/null
+++ b/demos/hello-world/var/log/hello-world.json
@@ -0,0 +1,35 @@
+{
+    "$schema": "https://koriym.github.io/Koriym.SemanticLogger/schemas/combined.json",
+    "open": {
+        "id": "becoming_open_1",
+        "type": "becoming_open",
+        "schemaUrl": "https://be-framework.org/schemas/becoming-open.json",
+        "context": {
+            "from": "Be\\Pattern\\Hello\\Input\\HelloInput",
+            "be": "Be\\Pattern\\Hello\\Final\\Hello",
+            "input": {
+                "name": "Be\\Pattern\\Hello\\Input\\HelloInput::name"
+            },
+            "inject": {
+                "greeting": "Be\\Pattern\\Hello\\Reason\\Greeting"
+            }
+        }
+    },
+    "close": {
+        "id": "becoming_final_1",
+        "type": "becoming_final",
+        "schemaUrl": "https://be-framework.org/schemas/becoming-final.json",
+        "context": {
+            "final": "Be\\Pattern\\Hello\\Final\\Hello",
+            "prop": {
+                "greeting": "Hello World"
+            }
+        },
+        "openId": "becoming_open_1",
+        "profile": {
+            "wallTime": 0.0008828639984130859,
+            "xdebug": [],
+            "xhprof": []
+        }
+    }
+}
diff --git a/demos/medical-triage/bin/be.php b/demos/medical-triage/bin/be.php
new file mode 100644
index 0000000..8b8abb5
--- /dev/null
+++ b/demos/medical-triage/bin/be.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\MedicalTriage;
+
+require dirname(__DIR__) . '/vendor/autoload.php';
+
+use Be\Framework\BecomingInterface;
+use Be\Pattern\MedicalTriage\Input\PatientInput;
+use Be\Pattern\MedicalTriage\Module\DevModule;
+use Ray\Di\Injector;
+
+use function dirname;
+use function escapeshellarg;
+use function passthru;
+use function printf;
+
+$injector = new Injector(new DevModule());
+$becoming = $injector->getInstance(BecomingInterface::class);
+
+$final = $becoming(new PatientInput(
+    patientId: 'PT-10001',
+    chiefComplaint: 'severe chest pain',
+    consciousnessLevel: 0,
+));
+printf("triage: %s\n", $final::class);
+
+echo "\n--- stree ---\n";
+passthru('vendor/bin/stree ' . escapeshellarg(dirname(__DIR__) . '/var/log/medical-triage.json'));
diff --git a/demos/medical-triage/src/Becoming/DevBecoming.php b/demos/medical-triage/src/Becoming/DevBecoming.php
new file mode 100644
index 0000000..57b14da
--- /dev/null
+++ b/demos/medical-triage/src/Becoming/DevBecoming.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\MedicalTriage\Becoming;
+
+use Be\Framework\Becoming;
+use Be\Framework\BecomingInterface;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Override;
+
+use function dirname;
+use function file_put_contents;
+use function is_dir;
+use function json_encode;
+use function mkdir;
+
+use const JSON_PRETTY_PRINT;
+use const JSON_UNESCAPED_SLASHES;
+use const JSON_UNESCAPED_UNICODE;
+
+final class DevBecoming implements BecomingInterface
+{
+    public function __construct(
+        private readonly Becoming $becoming,
+        private readonly SemanticLoggerInterface $logger,
+    ) {
+    }
+
+    #[Override]
+    public function __invoke(object $input): object
+    {
+        try {
+            return ($this->becoming)($input);
+        } finally {
+            $dir = dirname(__DIR__, 2) . '/var/log';
+            if (! is_dir($dir)) {
+                mkdir($dir, 0755, true);
+            }
+
+            file_put_contents(
+                $dir . '/medical-triage.json',
+                json_encode($this->logger->flush(), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . PHP_EOL,
+            );
+        }
+    }
+}
diff --git a/demos/medical-triage/src/Module/DevModule.php b/demos/medical-triage/src/Module/DevModule.php
new file mode 100644
index 0000000..a4fa9d4
--- /dev/null
+++ b/demos/medical-triage/src/Module/DevModule.php
@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\MedicalTriage\Module;
+
+use Be\Framework\Becoming;
+use Be\Framework\BecomingInterface;
+use Be\Pattern\MedicalTriage\Becoming\DevBecoming;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Ray\Di\AbstractModule;
+use Ray\Di\Scope;
+
+final class DevModule extends AbstractModule
+{
+    protected function configure(): void
+    {
+        $this->install(new AppModule());
+
+        $this->bind(Becoming::class);
+        $this->bind(BecomingInterface::class)->to(DevBecoming::class);
+        $this->bind(SemanticLoggerInterface::class)
+            ->toProvider(DevSemanticLoggerProvider::class)
+            ->in(Scope::SINGLETON);
+    }
+}
diff --git a/demos/medical-triage/src/Module/DevSemanticLoggerProvider.php b/demos/medical-triage/src/Module/DevSemanticLoggerProvider.php
new file mode 100644
index 0000000..d11e6a1
--- /dev/null
+++ b/demos/medical-triage/src/Module/DevSemanticLoggerProvider.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\MedicalTriage\Module;
+
+use Koriym\SemanticLogger\DevSemanticLogger;
+use Koriym\SemanticLogger\SemanticLogger;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Override;
+use Ray\Di\ProviderInterface;
+
+/** @implements ProviderInterface<SemanticLoggerInterface> */
+final class DevSemanticLoggerProvider implements ProviderInterface
+{
+    #[Override]
+    public function get(): SemanticLoggerInterface
+    {
+        return new DevSemanticLogger(new SemanticLogger());
+    }
+}
diff --git a/demos/medical-triage/var/log/medical-triage.json b/demos/medical-triage/var/log/medical-triage.json
new file mode 100644
index 0000000..9ac1276
--- /dev/null
+++ b/demos/medical-triage/var/log/medical-triage.json
@@ -0,0 +1,79 @@
+{
+    "$schema": "https://koriym.github.io/Koriym.SemanticLogger/schemas/combined.json",
+    "open": {
+        "id": "becoming_open_2",
+        "type": "becoming_open",
+        "schemaUrl": "https://be-framework.org/schemas/becoming-open.json",
+        "context": {
+            "from": "Be\\Pattern\\MedicalTriage\\Being\\TriageLevelDetermined",
+            "be": "Be\\Pattern\\MedicalTriage\\Final\\EmergencyAdmitted",
+            "input": {
+                "being": "Be\\Pattern\\MedicalTriage\\Being\\TriageLevelDetermined::being",
+                "patientId": "Be\\Pattern\\MedicalTriage\\Being\\TriageLevelDetermined::patientId"
+            },
+            "inject": {}
+        },
+        "open": {
+            "id": "becoming_open_1",
+            "type": "becoming_open",
+            "schemaUrl": "https://be-framework.org/schemas/becoming-open.json",
+            "context": {
+                "from": "Be\\Pattern\\MedicalTriage\\Input\\PatientInput",
+                "be": "Be\\Pattern\\MedicalTriage\\Being\\TriageLevelDetermined",
+                "input": {
+                    "patientId": "Be\\Pattern\\MedicalTriage\\Input\\PatientInput::patientId",
+                    "chiefComplaint": "Be\\Pattern\\MedicalTriage\\Input\\PatientInput::chiefComplaint",
+                    "consciousnessLevel": "Be\\Pattern\\MedicalTriage\\Input\\PatientInput::consciousnessLevel"
+                },
+                "inject": {
+                    "protocol": "Be\\Pattern\\MedicalTriage\\Reason\\JTASProtocol"
+                }
+            }
+        }
+    },
+    "close": {
+        "id": "becoming_final_1",
+        "type": "becoming_final",
+        "schemaUrl": "https://be-framework.org/schemas/becoming-final.json",
+        "context": {
+            "final": "Be\\Pattern\\MedicalTriage\\Final\\EmergencyAdmitted",
+            "prop": {
+                "admissionId": "ADM-20260420-9b8b8250",
+                "status": "admitted",
+                "triageCode": "RED",
+                "being": {
+                    "triageCode": "RED"
+                },
+                "patientId": "PT-10001"
+            }
+        },
+        "openId": "becoming_open_2",
+        "profile": {
+            "wallTime": 0.0006999969482421875,
+            "xdebug": [],
+            "xhprof": []
+        },
+        "close": {
+            "id": "becoming_being_1",
+            "type": "becoming_being",
+            "schemaUrl": "https://be-framework.org/schemas/becoming-being.json",
+            "context": {
+                "being": "Be\\Pattern\\MedicalTriage\\Being\\TriageLevelDetermined",
+                "prop": {
+                    "being": {
+                        "triageCode": "RED"
+                    },
+                    "patientId": "PT-10001",
+                    "chiefComplaint": "severe chest pain",
+                    "consciousnessLevel": 0
+                }
+            },
+            "openId": "becoming_open_1",
+            "profile": {
+                "wallTime": 0.001873016357421875,
+                "xdebug": [],
+                "xhprof": []
+            }
+        }
+    }
+}
diff --git a/demos/order-processing/bin/app.php b/demos/order-processing/bin/be.php
similarity index 61%
rename from demos/order-processing/bin/app.php
rename to demos/order-processing/bin/be.php
index c90da65..af4c73c 100644
--- a/demos/order-processing/bin/app.php
+++ b/demos/order-processing/bin/be.php
@@ -6,15 +6,20 @@
 
 require dirname(__DIR__) . '/vendor/autoload.php';
 
-use Be\Pattern\OrderProcessing\Input\OrderInput;
-use Be\Pattern\OrderProcessing\Module\AppModule;
-use Be\Framework\Becoming;
+use Be\Framework\BecomingInterface;
 use Be\Framework\Exception\SemanticVariableException;
+use Be\Pattern\OrderProcessing\Final\OrderConfirmed;
+use Be\Pattern\OrderProcessing\Input\OrderInput;
+use Be\Pattern\OrderProcessing\Module\DevModule;
 use Ray\Di\Injector;
+
+use function assert;
 use function dirname;
+use function escapeshellarg;
+use function passthru;
 
-$injector = new Injector(new AppModule());
-$becoming = new Becoming($injector, __NAMESPACE__ . '\\Semantic');
+$injector = new Injector(new DevModule());
+$becoming = $injector->getInstance(BecomingInterface::class);
 
 $input = new OrderInput(
     cartId: 'CART-001',
@@ -27,7 +32,7 @@
 );
 try {
     $order = $becoming($input);
-    assert($order instanceof Final\OrderConfirmed);
+    assert($order instanceof OrderConfirmed);
     echo "Order confirmed: {$order->orderId}" . PHP_EOL;
 } catch (SemanticVariableException $e) {
     $messages = $e->getErrors()->getMessages('ja');
@@ -35,3 +40,5 @@
     echo $errorMessage . PHP_EOL;
 }
 
+echo "\n--- stree ---\n";
+passthru('vendor/bin/stree ' . escapeshellarg(dirname(__DIR__) . '/var/log/order-processing.json'));
diff --git a/demos/order-processing/src/Becoming/DevBecoming.php b/demos/order-processing/src/Becoming/DevBecoming.php
new file mode 100644
index 0000000..906575a
--- /dev/null
+++ b/demos/order-processing/src/Becoming/DevBecoming.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\OrderProcessing\Becoming;
+
+use Be\Framework\Becoming;
+use Be\Framework\BecomingInterface;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Override;
+
+use function dirname;
+use function file_put_contents;
+use function is_dir;
+use function json_encode;
+use function mkdir;
+
+use const JSON_PRETTY_PRINT;
+use const JSON_UNESCAPED_SLASHES;
+use const JSON_UNESCAPED_UNICODE;
+
+final class DevBecoming implements BecomingInterface
+{
+    public function __construct(
+        private readonly Becoming $becoming,
+        private readonly SemanticLoggerInterface $logger,
+    ) {
+    }
+
+    #[Override]
+    public function __invoke(object $input): object
+    {
+        try {
+            return ($this->becoming)($input);
+        } finally {
+            $dir = dirname(__DIR__, 2) . '/var/log';
+            if (! is_dir($dir)) {
+                mkdir($dir, 0755, true);
+            }
+
+            file_put_contents(
+                $dir . '/order-processing.json',
+                json_encode($this->logger->flush(), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . PHP_EOL,
+            );
+        }
+    }
+}
diff --git a/demos/order-processing/src/Module/DevModule.php b/demos/order-processing/src/Module/DevModule.php
new file mode 100644
index 0000000..6c34ad4
--- /dev/null
+++ b/demos/order-processing/src/Module/DevModule.php
@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\OrderProcessing\Module;
+
+use Be\Framework\Becoming;
+use Be\Framework\BecomingInterface;
+use Be\Pattern\OrderProcessing\Becoming\DevBecoming;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Ray\Di\AbstractModule;
+use Ray\Di\Scope;
+
+final class DevModule extends AbstractModule
+{
+    protected function configure(): void
+    {
+        $this->install(new AppModule());
+
+        $this->bind(Becoming::class);
+        $this->bind(BecomingInterface::class)->to(DevBecoming::class);
+        $this->bind(SemanticLoggerInterface::class)
+            ->toProvider(DevSemanticLoggerProvider::class)
+            ->in(Scope::SINGLETON);
+    }
+}
diff --git a/demos/order-processing/src/Module/DevSemanticLoggerProvider.php b/demos/order-processing/src/Module/DevSemanticLoggerProvider.php
new file mode 100644
index 0000000..91fcc81
--- /dev/null
+++ b/demos/order-processing/src/Module/DevSemanticLoggerProvider.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\OrderProcessing\Module;
+
+use Koriym\SemanticLogger\DevSemanticLogger;
+use Koriym\SemanticLogger\SemanticLogger;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Override;
+use Ray\Di\ProviderInterface;
+
+/** @implements ProviderInterface<SemanticLoggerInterface> */
+final class DevSemanticLoggerProvider implements ProviderInterface
+{
+    #[Override]
+    public function get(): SemanticLoggerInterface
+    {
+        return new DevSemanticLogger(new SemanticLogger());
+    }
+}
diff --git a/demos/order-processing/var/log/order-processing.json b/demos/order-processing/var/log/order-processing.json
new file mode 100644
index 0000000..76a4b9a
--- /dev/null
+++ b/demos/order-processing/var/log/order-processing.json
@@ -0,0 +1,73 @@
+{
+    "$schema": "https://koriym.github.io/Koriym.SemanticLogger/schemas/combined.json",
+    "open": {
+        "id": "becoming_open_1",
+        "type": "becoming_open",
+        "schemaUrl": "https://be-framework.org/schemas/becoming-open.json",
+        "context": {
+            "from": "Be\\Pattern\\OrderProcessing\\Input\\OrderInput",
+            "be": "Be\\Pattern\\OrderProcessing\\Final\\OrderConfirmed",
+            "input": {},
+            "inject": {
+                "inventory": "Be\\Pattern\\OrderProcessing\\Moment\\InventoryReserved",
+                "payment": "Be\\Pattern\\OrderProcessing\\Moment\\PaymentCompleted",
+                "shipping": "Be\\Pattern\\OrderProcessing\\Moment\\ShippingArranged",
+                "been": "Be\\Framework\\SemanticLog\\Been"
+            }
+        }
+    },
+    "events": [
+        {
+            "id": "order_finalized_1",
+            "type": "order_finalized",
+            "schemaUrl": "https://be-framework.github.io/schemas/order-processing/order-finalized.json",
+            "context": {
+                "orderId": "ORD-20260420-f239e28a",
+                "status": "confirmed"
+            },
+            "openId": "becoming_open_1"
+        }
+    ],
+    "close": {
+        "id": "becoming_final_1",
+        "type": "becoming_final",
+        "schemaUrl": "https://be-framework.org/schemas/becoming-final.json",
+        "context": {
+            "final": "Be\\Pattern\\OrderProcessing\\Final\\OrderConfirmed",
+            "prop": {
+                "orderId": "ORD-20260420-f239e28a",
+                "status": "confirmed",
+                "inventory": {
+                    "reservation": {
+                        "reservationId": "RSV-TOKYO-20260420122626-7948"
+                    },
+                    "productId": "PROD-001",
+                    "quantity": 1,
+                    "warehouseId": "WH-TOKYO-01"
+                },
+                "payment": {
+                    "capture": {
+                        "authorizationCode": "AUTH-10000-08e6ef82",
+                        "amount": 10000
+                    },
+                    "cardNumber": "4111111111111111",
+                    "amount": 10000
+                },
+                "shipping": {
+                    "dispatch": {
+                        "trackingNumber": "YAMATO-202604201226261461",
+                        "shippingRate": 800
+                    },
+                    "carrierId": "YAMATO",
+                    "address": "Tokyo, Japan"
+                }
+            }
+        },
+        "openId": "becoming_open_1",
+        "profile": {
+            "wallTime": 0.0006608963012695312,
+            "xdebug": [],
+            "xhprof": []
+        }
+    }
+}
diff --git a/demos/user-registration/bin/be.php b/demos/user-registration/bin/be.php
new file mode 100644
index 0000000..95d24a1
--- /dev/null
+++ b/demos/user-registration/bin/be.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\UserRegistration;
+
+require dirname(__DIR__) . '/vendor/autoload.php';
+
+use Be\Framework\BecomingInterface;
+use Be\Pattern\UserRegistration\Final\UserRegistered;
+use Be\Pattern\UserRegistration\Input\RegistrationInput;
+use Be\Pattern\UserRegistration\Module\DevModule;
+use Ray\Di\Injector;
+
+use function assert;
+use function dirname;
+use function escapeshellarg;
+use function passthru;
+use function printf;
+
+$injector = new Injector(new DevModule());
+$becoming = $injector->getInstance(BecomingInterface::class);
+
+$final = $becoming(new RegistrationInput(
+    email: 'alice@example.com',
+    password: 'Str0ngP@ss',
+    displayName: 'Alice',
+));
+assert($final instanceof UserRegistered);
+printf("userId: %s\n", $final->userId);
+
+echo "\n--- stree ---\n";
+passthru('vendor/bin/stree ' . escapeshellarg(dirname(__DIR__) . '/var/log/user-registration.json'));
diff --git a/demos/user-registration/src/Becoming/DevBecoming.php b/demos/user-registration/src/Becoming/DevBecoming.php
new file mode 100644
index 0000000..5987750
--- /dev/null
+++ b/demos/user-registration/src/Becoming/DevBecoming.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\UserRegistration\Becoming;
+
+use Be\Framework\Becoming;
+use Be\Framework\BecomingInterface;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Override;
+
+use function dirname;
+use function file_put_contents;
+use function is_dir;
+use function json_encode;
+use function mkdir;
+
+use const JSON_PRETTY_PRINT;
+use const JSON_UNESCAPED_SLASHES;
+use const JSON_UNESCAPED_UNICODE;
+
+final class DevBecoming implements BecomingInterface
+{
+    public function __construct(
+        private readonly Becoming $becoming,
+        private readonly SemanticLoggerInterface $logger,
+    ) {
+    }
+
+    #[Override]
+    public function __invoke(object $input): object
+    {
+        try {
+            return ($this->becoming)($input);
+        } finally {
+            $dir = dirname(__DIR__, 2) . '/var/log';
+            if (! is_dir($dir)) {
+                mkdir($dir, 0755, true);
+            }
+
+            file_put_contents(
+                $dir . '/user-registration.json',
+                json_encode($this->logger->flush(), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . PHP_EOL,
+            );
+        }
+    }
+}
diff --git a/demos/user-registration/src/Module/AppModule.php b/demos/user-registration/src/Module/AppModule.php
index 6ee7859..94c69e0 100644
--- a/demos/user-registration/src/Module/AppModule.php
+++ b/demos/user-registration/src/Module/AppModule.php
@@ -4,26 +4,23 @@
 
 namespace Be\Pattern\UserRegistration\Module;
 
+use Be\Framework\Module\BeModule;
 use Be\Pattern\UserRegistration\Reason\EmailVerifier;
 use Be\Pattern\UserRegistration\Reason\EmailVerifierInterface;
 use Be\Pattern\UserRegistration\Reason\GravatarResolver;
 use Be\Pattern\UserRegistration\Reason\PasswordHasher;
 use Be\Pattern\UserRegistration\Reason\UserIdGenerator;
 use Be\Pattern\UserRegistration\Reason\WelcomeTokenGenerator;
-use Be\Framework\Module\BeModule;
 use Ray\Di\AbstractModule;
 
 final class AppModule extends AbstractModule
 {
     protected function configure(): void
     {
-        // Install BeModule with demo's semantic namespace
         $this->install(new BeModule('Be\Pattern\UserRegistration\Semantic'));
 
-        // Reason bindings (via interface for testability)
         $this->bind(EmailVerifierInterface::class)->to(EmailVerifier::class);
 
-        // Reason bindings (concrete classes)
         $this->bind(PasswordHasher::class);
         $this->bind(GravatarResolver::class);
         $this->bind(UserIdGenerator::class);
diff --git a/demos/user-registration/src/Module/DevModule.php b/demos/user-registration/src/Module/DevModule.php
new file mode 100644
index 0000000..57927cb
--- /dev/null
+++ b/demos/user-registration/src/Module/DevModule.php
@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\UserRegistration\Module;
+
+use Be\Framework\Becoming;
+use Be\Framework\BecomingInterface;
+use Be\Pattern\UserRegistration\Becoming\DevBecoming;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Ray\Di\AbstractModule;
+use Ray\Di\Scope;
+
+final class DevModule extends AbstractModule
+{
+    protected function configure(): void
+    {
+        $this->install(new AppModule());
+
+        $this->bind(Becoming::class);
+        $this->bind(BecomingInterface::class)->to(DevBecoming::class);
+        $this->bind(SemanticLoggerInterface::class)
+            ->toProvider(DevSemanticLoggerProvider::class)
+            ->in(Scope::SINGLETON);
+    }
+}
diff --git a/demos/user-registration/src/Module/DevSemanticLoggerProvider.php b/demos/user-registration/src/Module/DevSemanticLoggerProvider.php
new file mode 100644
index 0000000..3ef5658
--- /dev/null
+++ b/demos/user-registration/src/Module/DevSemanticLoggerProvider.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Be\Pattern\UserRegistration\Module;
+
+use Koriym\SemanticLogger\DevSemanticLogger;
+use Koriym\SemanticLogger\SemanticLogger;
+use Koriym\SemanticLogger\SemanticLoggerInterface;
+use Override;
+use Ray\Di\ProviderInterface;
+
+/** @implements ProviderInterface<SemanticLoggerInterface> */
+final class DevSemanticLoggerProvider implements ProviderInterface
+{
+    #[Override]
+    public function get(): SemanticLoggerInterface
+    {
+        return new DevSemanticLogger(new SemanticLogger());
+    }
+}
diff --git a/demos/user-registration/var/log/user-registration.json b/demos/user-registration/var/log/user-registration.json
new file mode 100644
index 0000000..079cfee
--- /dev/null
+++ b/demos/user-registration/var/log/user-registration.json
@@ -0,0 +1,166 @@
+{
+    "$schema": "https://koriym.github.io/Koriym.SemanticLogger/schemas/combined.json",
+    "open": {
+        "id": "becoming_open_4",
+        "type": "becoming_open",
+        "schemaUrl": "https://be-framework.org/schemas/becoming-open.json",
+        "context": {
+            "from": "Be\\Pattern\\UserRegistration\\Being\\ProfileEnriched",
+            "be": "Be\\Pattern\\UserRegistration\\Final\\UserRegistered",
+            "input": {
+                "email": "Be\\Pattern\\UserRegistration\\Being\\ProfileEnriched::email",
+                "displayName": "Be\\Pattern\\UserRegistration\\Being\\ProfileEnriched::displayName",
+                "hashedPassword": "Be\\Pattern\\UserRegistration\\Being\\ProfileEnriched::hashedPassword",
+                "avatarUrl": "Be\\Pattern\\UserRegistration\\Being\\ProfileEnriched::avatarUrl"
+            },
+            "inject": {
+                "idGen": "Be\\Pattern\\UserRegistration\\Reason\\UserIdGenerator",
+                "tokenGen": "Be\\Pattern\\UserRegistration\\Reason\\WelcomeTokenGenerator",
+                "been": "Be\\Framework\\SemanticLog\\Been"
+            }
+        },
+        "open": {
+            "id": "becoming_open_3",
+            "type": "becoming_open",
+            "schemaUrl": "https://be-framework.org/schemas/becoming-open.json",
+            "context": {
+                "from": "Be\\Pattern\\UserRegistration\\Being\\PasswordHashed",
+                "be": "Be\\Pattern\\UserRegistration\\Being\\ProfileEnriched",
+                "input": {
+                    "email": "Be\\Pattern\\UserRegistration\\Being\\PasswordHashed::email",
+                    "displayName": "Be\\Pattern\\UserRegistration\\Being\\PasswordHashed::displayName",
+                    "hashedPassword": "Be\\Pattern\\UserRegistration\\Being\\PasswordHashed::hashedPassword"
+                },
+                "inject": {
+                    "resolver": "Be\\Pattern\\UserRegistration\\Reason\\GravatarResolver"
+                }
+            },
+            "open": {
+                "id": "becoming_open_2",
+                "type": "becoming_open",
+                "schemaUrl": "https://be-framework.org/schemas/becoming-open.json",
+                "context": {
+                    "from": "Be\\Pattern\\UserRegistration\\Being\\EmailVerified",
+                    "be": "Be\\Pattern\\UserRegistration\\Being\\PasswordHashed",
+                    "input": {
+                        "email": "Be\\Pattern\\UserRegistration\\Being\\EmailVerified::email",
+                        "password": "Be\\Pattern\\UserRegistration\\Being\\EmailVerified::password",
+                        "displayName": "Be\\Pattern\\UserRegistration\\Being\\EmailVerified::displayName"
+                    },
+                    "inject": {
+                        "hasher": "Be\\Pattern\\UserRegistration\\Reason\\PasswordHasher"
+                    }
+                },
+                "open": {
+                    "id": "becoming_open_1",
+                    "type": "becoming_open",
+                    "schemaUrl": "https://be-framework.org/schemas/becoming-open.json",
+                    "context": {
+                        "from": "Be\\Pattern\\UserRegistration\\Input\\RegistrationInput",
+                        "be": "Be\\Pattern\\UserRegistration\\Being\\EmailVerified",
+                        "input": {
+                            "email": "Be\\Pattern\\UserRegistration\\Input\\RegistrationInput::email",
+                            "password": "Be\\Pattern\\UserRegistration\\Input\\RegistrationInput::password",
+                            "displayName": "Be\\Pattern\\UserRegistration\\Input\\RegistrationInput::displayName"
+                        },
+                        "inject": {
+                            "verifier": "Be\\Pattern\\UserRegistration\\Reason\\EmailVerifier"
+                        }
+                    }
+                }
+            }
+        }
+    },
+    "events": [
+        {
+            "id": "user_created_1",
+            "type": "user_created",
+            "schemaUrl": "https://be-framework.github.io/schemas/user-registration/user-created.json",
+            "context": {
+                "userId": "USR-20260420-fb66ef83c08236b2",
+                "email": "alice@example.com"
+            },
+            "openId": "becoming_open_4"
+        }
+    ],
+    "close": {
+        "id": "becoming_final_1",
+        "type": "becoming_final",
+        "schemaUrl": "https://be-framework.org/schemas/becoming-final.json",
+        "context": {
+            "final": "Be\\Pattern\\UserRegistration\\Final\\UserRegistered",
+            "prop": {
+                "userId": "USR-20260420-fb66ef83c08236b2",
+                "welcomeToken": "870dc0778580246f38d7248c24085eed34828ba07ee29540919c4f9e79156b30",
+                "email": "alice@example.com",
+                "displayName": "Alice",
+                "hashedPassword": "$2y$12$ypkeDoTNzeS8BYm/.HsG0uAYXsOsCraLvKseZ6kiR2jIml0rBSE8e",
+                "avatarUrl": "https://www.gravatar.com/avatar/c160f8cc69a4f0bf2b0362752353d060"
+            }
+        },
+        "openId": "becoming_open_4",
+        "profile": {
+            "wallTime": 0.0009059906005859375,
+            "xdebug": [],
+            "xhprof": []
+        },
+        "close": {
+            "id": "becoming_being_3",
+            "type": "becoming_being",
+            "schemaUrl": "https://be-framework.org/schemas/becoming-being.json",
+            "context": {
+                "being": "Be\\Pattern\\UserRegistration\\Being\\ProfileEnriched",
+                "prop": {
+                    "avatarUrl": "https://www.gravatar.com/avatar/c160f8cc69a4f0bf2b0362752353d060",
+                    "email": "alice@example.com",
+                    "displayName": "Alice",
+                    "hashedPassword": "$2y$12$ypkeDoTNzeS8BYm/.HsG0uAYXsOsCraLvKseZ6kiR2jIml0rBSE8e"
+                }
+            },
+            "openId": "becoming_open_3",
+            "profile": {
+                "wallTime": 0.00021505355834960938,
+                "xdebug": [],
+                "xhprof": []
+            },
+            "close": {
+                "id": "becoming_being_2",
+                "type": "becoming_being",
+                "schemaUrl": "https://be-framework.org/schemas/becoming-being.json",
+                "context": {
+                    "being": "Be\\Pattern\\UserRegistration\\Being\\PasswordHashed",
+                    "prop": {
+                        "hashedPassword": "$2y$12$ypkeDoTNzeS8BYm/.HsG0uAYXsOsCraLvKseZ6kiR2jIml0rBSE8e",
+                        "email": "alice@example.com",
+                        "displayName": "Alice"
+                    }
+                },
+                "openId": "becoming_open_2",
+                "profile": {
+                    "wallTime": 0.23204898834228516,
+                    "xdebug": [],
+                    "xhprof": []
+                },
+                "close": {
+                    "id": "becoming_being_1",
+                    "type": "becoming_being",
+                    "schemaUrl": "https://be-framework.org/schemas/becoming-being.json",
+                    "context": {
+                        "being": "Be\\Pattern\\UserRegistration\\Being\\EmailVerified",
+                        "prop": {
+                            "email": "alice@example.com",
+                            "password": "Str0ngP@ss",
+                            "displayName": "Alice"
+                        }
+                    },
+                    "openId": "becoming_open_1",
+                    "profile": {
+                        "wallTime": 0.0007009506225585938,
+                        "xdebug": [],
+                        "xhprof": []
+                    }
+                }
+            }
+        }
+    }
+}