refactor(pcre): extract composer/pcre into the shirabe-pcre crate

Move `Composer\Pcre` out of shirabe-external-packages and into its own
crate, so the path is `shirabe_pcre::preg::Preg` instead of
`shirabe_external_packages::composer::pcre::preg::Preg`.

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

1 files changed, 4 insertions, 7 deletions

diff --git a/crates/shirabe/src/util/http/response.rs b/crates/shirabe/src/util/http/response.rs
index 3ee538d5..47a1593f 100644
--- a/crates/shirabe/src/util/http/response.rs
+++ b/crates/shirabe/src/util/http/response.rs
@@ -1,7 +1,7 @@
 //! ref: composer/src/Composer/Util/Http/Response.php
 
 use crate::json::JsonFile;
-use shirabe_external_packages::composer::pcre::Preg;
+use shirabe_pcre::Preg;
 use shirabe_php_shim::{PhpMixed, php_regex, preg_quote};
 
 #[derive(Debug)]
@@ -65,13 +65,10 @@ impl Response {
         let mut value = None;
         let pattern = format!("{{^{}:\\s*(.+?)\\s*$}}i", preg_quote(name, None));
         for header in headers {
-            let mut matches: indexmap::IndexMap<
-                shirabe_external_packages::composer::pcre::CaptureKey,
-                String,
-            > = indexmap::IndexMap::new();
+            let mut matches: indexmap::IndexMap<shirabe_pcre::CaptureKey, String> =
+                indexmap::IndexMap::new();
             if Preg::match3(&pattern, header, Some(&mut matches))
-                && let Some(s) =
-                    matches.get(&shirabe_external_packages::composer::pcre::CaptureKey::ByIndex(1))
+                && let Some(s) = matches.get(&shirabe_pcre::CaptureKey::ByIndex(1))
             {
                 value = Some(s.clone());
             }