feat(plugin): run plugin-provided commands in a worker-side application

A same-FQCN Composer\Console\Application, hand-written under the new
php/runtime/ tree, hosts CommandProvider commands inside the PHP worker:
PhpCommandProxy overrides run() and forwards the stringified input, so the
real Symfony machinery binds, validates and executes against the live
command object, while help/list render Rust-side from a definition read
back at construction. Reverse \Shirabe\RustCommandStub rows let a plugin
command invoke built-in commands back in the Rust process, keeping every
command on the side whose helper set it was written for.

Composer\EventDispatcher\Event moves from a generated stub to a dual-mode
runtime class: the real BaseCommand::initialize constructs a
PreCommandRunEvent natively in the worker, which a proxy-only constructor
guard rejected. Its PRE_COMMAND_RUN dispatch reaches a new EventDispatcher
stub whose dispatch supports the observably-no-op no-listener case and
fails explicitly otherwise. The stub generator now accepts runtime-provided
classes as stub bases (never as targets) and cross-checks the Application
handoff property table against the real class.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

1 files changed, 0 insertions, 67 deletions

diff --git a/crates/shirabe-php-rpc/php/stubs/Composer/EventDispatcher/Event.php b/crates/shirabe-php-rpc/php/stubs/Composer/EventDispatcher/Event.php
deleted file mode 100644
index fea84c75..00000000
--- a/crates/shirabe-php-rpc/php/stubs/Composer/EventDispatcher/Event.php
+++ /dev/null
@@ -1,67 +0,0 @@
-<?php
-
-// Generated by scripts/plugin-stub-generator; do not edit by hand.
-// Proxy stub for Composer\EventDispatcher\Event: the public surface forwards to the Rust-side entity over RPC.
-
-namespace Composer\EventDispatcher;
-
-class Event implements \ShirabeRustStub
-{
-    /** @var int */
-    protected $__rhandle;
-    /** @var int */
-    protected $__epoch;
-
-    public function __construct(int $rhandle = 0, int $epoch = 0)
-    {
-        if (func_num_args() < 2) {
-            // Constructing the class from plugin code (a common idiom for e.g. `new BufferIO()`)
-            // is an open question of the plugin design; only proxy instantiation passes a
-            // Rust handle. Fail with a diagnosable message instead of an ArgumentCountError.
-            throw new \RuntimeException(
-                'Shirabe does not support constructing ' . static::class . ' inside the plugin process yet'
-            );
-        }
-        $this->__rhandle = $rhandle;
-        $this->__epoch = $epoch;
-    }
-
-    public function __destruct()
-    {
-        \ShirabeRustObjectRegistry::release($this->__rhandle);
-    }
-
-    public function __shirabeRustHandleDescriptor(): array
-    {
-        return [
-            '__rhandle' => $this->__rhandle,
-            '__class' => static::class,
-            '__epoch' => $this->__epoch,
-        ];
-    }
-
-    public function getName(): string
-    {
-        return \ShirabeRpcRuntime::callRust($this->__rhandle, 'getName', []);
-    }
-
-    public function getArguments(): array
-    {
-        return \ShirabeRpcRuntime::callRust($this->__rhandle, 'getArguments', []);
-    }
-
-    public function getFlags(): array
-    {
-        return \ShirabeRpcRuntime::callRust($this->__rhandle, 'getFlags', []);
-    }
-
-    public function isPropagationStopped(): bool
-    {
-        return \ShirabeRpcRuntime::callRust($this->__rhandle, 'isPropagationStopped', []);
-    }
-
-    public function stopPropagation(): void
-    {
-        \ShirabeRpcRuntime::callRust($this->__rhandle, 'stopPropagation', []);
-    }
-}