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, 5 insertions, 4 deletions

diff --git a/crates/shirabe/tests/package/archiver/archivable_files_finder_test.rs b/crates/shirabe/tests/package/archiver/archivable_files_finder_test.rs
index 499e08dc..d932dd4e 100644
--- a/crates/shirabe/tests/package/archiver/archivable_files_finder_test.rs
+++ b/crates/shirabe/tests/package/archiver/archivable_files_finder_test.rs
@@ -3,8 +3,9 @@
 use indexmap::IndexMap;
 use shirabe::package::archiver::ArchivableFilesFinder;
 use shirabe::util::Filesystem;
-use shirabe_pcre::Preg;
-use shirabe_php_shim::{PhpMixed, ZipArchive, dirname, file_put_contents, preg_quote};
+use shirabe_php_shim::{
+    PhpMixed, ZipArchive, dirname, file_put_contents, preg_quote, preg_replace,
+};
 use shirabe_symfony_process::Process;
 use tempfile::TempDir;
 
@@ -85,7 +86,7 @@ fn get_archivable_files(set_up: &SetUp, finder: ArchivableFilesFinder) -> Vec<St
     for file in finder {
         if !file.is_dir() {
             let real_path = file.canonicalize().unwrap();
-            files.push(Preg::replace(
+            files.push(preg_replace(
                 format!("#^{}#", preg_quote(&set_up.sources, Some('#'))),
                 "",
                 &set_up.fs.normalize_path(&real_path.to_string_lossy()),
@@ -196,7 +197,7 @@ fn get_archived_files(set_up: &SetUp, command: &str) -> Vec<String> {
             continue;
         }
         let virtual_path = format!("phar://{}/archive.zip/{}", set_up.sources, name);
-        files.push(Preg::replace(
+        files.push(preg_replace(
             &prefix,
             "",
             &set_up.fs.normalize_path(&virtual_path),