refactor(pcre): inline Preg into its call sites and drop the crate

Preg had shed everything it owned: after the last few rounds its methods
were one-line forwards to the shim's preg_*(), differing only in a
default argument or a wrapper the caller unwrapped anyway. The 460 call
sites now name the shim function, and shirabe-pcre is gone from the
workspace along with its LICENSE entry.

The forwards expand as they read: isMatch becomes
preg_match2(.., 0).is_some() (is_none() where PHP negates it), isMatch3
and match3 drop the .is_some(), matchAll counts through
preg_match_all2(..).occurrence_count(), and replace4/replace5 spell out
the limit and count arguments preg_replace2 takes. Callbacks are the one
place the shapes differ: preg_replace_callback carries an error out of
the callback, so the fourteen infallible closures wrap their result in
Ok() and expect() it back.

Config::process() is the fifteenth, and it drops the `error` cell it
captured to smuggle a failure past a closure that could only return a
String. The `?` in the closure now carries it, which is what the PHP
does -- a throw from the callback leaves preg_replace_callback at the
failing match rather than running the remaining replacements and
reporting the last error.

The module doc that explained why composer/pcre's exceptions and
*StrictGroups() variants have no counterpart moves to the shim's preg
module, where the functions it describes live.

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

1 files changed, 3 insertions, 4 deletions

diff --git a/crates/shirabe/src/repository/path_repository.rs b/crates/shirabe/src/repository/path_repository.rs
index 680911eb..77cc0222 100644
--- a/crates/shirabe/src/repository/path_repository.rs
+++ b/crates/shirabe/src/repository/path_repository.rs
@@ -23,10 +23,9 @@ use crate::util::Platform;
 use crate::util::ProcessExecutor;
 use crate::util::Url;
 use indexmap::IndexMap;
-use shirabe_pcre::Preg;
 use shirabe_php_shim::{
     GLOB_BRACE, GLOB_MARK, GLOB_ONLYDIR, PhpMixed, RuntimeException, defined, file_exists,
-    file_get_contents, glob_with_flags, hash, php_regex, realpath, serialize,
+    file_get_contents, glob_with_flags, hash, php_regex, preg_match2, realpath, serialize,
 };
 
 #[derive(Debug)]
@@ -159,9 +158,9 @@ impl PathRepository {
         let url_matches = self.get_url_matches()?;
 
         if url_matches.is_empty() {
-            if Preg::is_match(php_regex!(r"{[*{}]}"), &self.url) {
+            if preg_match2(php_regex!(r"{[*{}]}"), &self.url, 0).is_some() {
                 let mut url = self.url.clone();
-                while Preg::is_match(php_regex!(r"{[*{}]}"), &url) {
+                while preg_match2(php_regex!(r"{[*{}]}"), &url, 0).is_some() {
                     url = shirabe_php_shim::dirname(&url);
                 }
                 // the parent directory before any wildcard exists, so we assume it is correctly configured but simply empty