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, 3 deletions

diff --git a/crates/shirabe/src/command/create_project_command.rs b/crates/shirabe/src/command/create_project_command.rs
index f1b899d3..fbdcfabb 100644
--- a/crates/shirabe/src/command/create_project_command.rs
+++ b/crates/shirabe/src/command/create_project_command.rs
@@ -37,12 +37,11 @@ use crate::util::Filesystem;
 use crate::util::Platform;
 use crate::util::ProcessExecutor;
 use indexmap::IndexMap;
-use shirabe_pcre::Preg;
 use shirabe_php_shim::Catch as _;
 use shirabe_php_shim::{
     InvalidArgumentException, PhpMixed, RuntimeException, UnexpectedValueException, array_pop,
     chdir, explode_with_limit, file_exists, getcwd, impl_php_class, implode, is_dir, is_file,
-    mkdir, realpath, rtrim, strtolower, unlink,
+    mkdir, preg_match2, realpath, rtrim, strtolower, unlink,
 };
 use shirabe_symfony_console::command::Command;
 use shirabe_symfony_console::input::InputInterface;
@@ -526,7 +525,7 @@ impl CreateProjectCommand {
             if package_version.is_none() {
                 stability = Some("stable".to_string());
             } else {
-                let matched = Preg::is_match3(
+                let matched = preg_match2(
                     format!(
                         "{{^[^,\\s]*?@({})$}}i",
                         implode(
@@ -538,6 +537,7 @@ impl CreateProjectCommand {
                         )
                     ),
                     package_version.as_deref().unwrap_or(""),
+                    0,
                 );
                 if let Some(matched) = matched {
                     stability = Some(matched.get(1).unwrap_or_default().to_string());