refactor(xdebug-handler): extract composer/xdebug_handler into the shirabe-xdebug-handler crate

Move `Composer\XdebugHandler` out of shirabe-external-packages and into
its own crate, so the path is `shirabe_xdebug_handler::XdebugHandler`
instead of
`shirabe_external_packages::composer::xdebug_handler::XdebugHandler`.

Standing alone, the stub no longer sits in a crate that shirabe-php-rpc
depends on, so drop the dependency-cycle rationale from the comments that
explain why callers reach for shirabe_php_rpc directly.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/shirabe/src/console/application.rs b/crates/shirabe/src/console/application.rs
index f5c953da..cc456c3c 100644
--- a/crates/shirabe/src/console/application.rs
+++ b/crates/shirabe/src/console/application.rs
@@ -54,7 +54,6 @@ use crate::util::HttpDownloader;
 use crate::util::Platform;
 use crate::util::Silencer;
 use indexmap::IndexMap;
-use shirabe_external_packages::composer::xdebug_handler::XdebugHandler;
 use shirabe_php_shim::Catch as _;
 use shirabe_php_shim::{
     LogicException as ShimLogicException, PHP_VERSION, PHP_VERSION_ID, PhpMixed, RuntimeException,
@@ -99,6 +98,7 @@ use shirabe_symfony_console::style::style_interface::StyleInterface;
 use shirabe_symfony_console::style::symfony_style::SymfonyStyle;
 use shirabe_symfony_console::terminal::Terminal;
 use shirabe_symfony_process::exception::ProcessTimedOutException;
+use shirabe_xdebug_handler::XdebugHandler;
 
 /// The PHP `Composer\Console\Application` and `Symfony\Component\Console\Application` are
 /// flattened into a single struct. Methods that are overridden by subclass and called via