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, 9 insertions, 6 deletions

diff --git a/crates/shirabe/src/console/html_output_formatter.rs b/crates/shirabe/src/console/html_output_formatter.rs
index 694f8de6..bcc7c045 100644
--- a/crates/shirabe/src/console/html_output_formatter.rs
+++ b/crates/shirabe/src/console/html_output_formatter.rs
@@ -1,7 +1,7 @@
 //! ref: composer/src/Composer/Console/HtmlOutputFormatter.php
 
 use indexmap::IndexMap;
-use shirabe_pcre::{Preg, PregMatches};
+use shirabe_php_shim::{PregMatches, preg_replace_callback};
 use shirabe_symfony_console::formatter::OutputFormatter;
 use shirabe_symfony_console::formatter::OutputFormatterInterface;
 use shirabe_symfony_console::formatter::OutputFormatterStyleInterface;
@@ -65,11 +65,14 @@ impl HtmlOutputFormatter {
             clear_escape_codes, clear_escape_codes
         );
 
-        Ok(Some(Preg::replace_callback(
-            &pattern,
-            |matches| self.format_html(matches),
-            &formatted,
-        )))
+        Ok(Some(
+            preg_replace_callback(
+                &pattern,
+                |matches| Ok(self.format_html(matches)),
+                &formatted,
+            )
+            .expect("the replacement callback cannot fail"),
+        ))
     }
 
     fn format_html(&self, matches: &PregMatches) -> String {