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, 4 insertions, 4 deletions

diff --git a/crates/shirabe/src/package/locker.rs b/crates/shirabe/src/package/locker.rs
index 7d45e573..fee45fef 100644
--- a/crates/shirabe/src/package/locker.rs
+++ b/crates/shirabe/src/package/locker.rs
@@ -24,12 +24,11 @@ use crate::repository::RootPackageRepository;
 use crate::util::Git as GitUtil;
 use crate::util::ProcessExecutor;
 use indexmap::IndexMap;
-use shirabe_pcre::Preg;
 use shirabe_php_shim::Catch as _;
 use shirabe_php_shim::{
     DATE_RFC3339, LogicException, PhpMixed, RuntimeException, array_intersect, array_keys,
     array_map, array_merge, file_get_contents, filemtime, function_exists, hash, in_array_loose,
-    is_int, ksort, php_regex, realpath, strcmp, strtolower, touch2, trim, usort,
+    is_int, ksort, php_regex, preg_match2, realpath, strcmp, strtolower, touch2, trim, usort,
 };
 use shirabe_seld_json_lint::ParsingException;
 
@@ -824,7 +823,7 @@ impl Locker {
                             ),
                             None,
                         );
-                        if Preg::is_match(php_regex!(r"{^\s*\d+\s*$}"), &output_str) {
+                        if preg_match2(php_regex!(r"{^\s*\d+\s*$}"), &output_str, 0).is_some() {
                             let ts = trim(&output_str, None).parse::<i64>().unwrap_or(0);
                             datetime = chrono::DateTime::from_timestamp(ts, 0);
                         }
@@ -843,9 +842,10 @@ impl Locker {
                         ]),
                         &mut output,
                         path.as_deref(),
-                    )? && let Some(m) = Preg::is_match3(
+                    )? && let Some(m) = preg_match2(
                         php_regex!(r"{^\s*(\d+)\s*}"),
                         output.as_string().unwrap_or(""),
+                        0,
                     ) {
                         let ts = m
                             .get(1)