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/io/console_io.rs b/crates/shirabe/src/io/console_io.rs
index e9ca2048..e3ba68b3 100644
--- a/crates/shirabe/src/io/console_io.rs
+++ b/crates/shirabe/src/io/console_io.rs
@@ -9,10 +9,9 @@ use crate::io::io_interface;
 use crate::question::StrictConfirmationQuestion;
 use indexmap::IndexMap;
 use indexmap::indexmap;
-use shirabe_pcre::Preg;
 use shirabe_php_shim::{
-    PhpMixed, array_search, in_array_strict, is_array, is_string, microtime, str_repeat,
-    strip_tags, strlen,
+    PhpMixed, array_search, in_array_strict, is_array, is_string, microtime, preg_replace,
+    str_repeat, strip_tags, strlen,
 };
 use shirabe_symfony_console::helper::ProgressBar;
 use shirabe_symfony_console::helper::QuestionHelper;
@@ -237,7 +236,7 @@ impl ConsoleIO {
         };
         let messages = Self::ensure_valid_utf8(messages);
 
-        Preg::replace(&pattern, replacement, &messages)
+        preg_replace(&pattern, replacement, &messages)
     }
 
     /// Ensures a string is valid UTF-8, replacing invalid byte sequences with '?'