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, 2 insertions, 3 deletions

diff --git a/crates/shirabe/src/command/fund_command.rs b/crates/shirabe/src/command/fund_command.rs
index f900bce0..ea077ef5 100644
--- a/crates/shirabe/src/command/fund_command.rs
+++ b/crates/shirabe/src/command/fund_command.rs
@@ -10,8 +10,7 @@ use crate::package::base_package::{self};
 use crate::repository::CompositeRepository;
 use crate::repository::RepositoryInterface;
 use indexmap::IndexMap;
-use shirabe_pcre::Preg;
-use shirabe_php_shim::{PhpMixed, impl_php_class, php_regex};
+use shirabe_php_shim::{PhpMixed, impl_php_class, php_regex, preg_match2};
 use shirabe_semver::constraint::AnyConstraint;
 use shirabe_semver::constraint::MatchAllConstraint;
 use shirabe_symfony_console::command::Command;
@@ -64,7 +63,7 @@ impl FundCommand {
                 .unwrap_or("");
             if r#type == "github"
                 && let Some(matches) =
-                    Preg::is_match3(php_regex!(r"{^https://github.com/([^/]+)$}"), &url)
+                    preg_match2(php_regex!(r"{^https://github.com/([^/]+)$}"), &url, 0)
                 && let Some(sponsor) = matches.get(1).map(str::to_string)
             {
                 url = format!("https://github.com/sponsors/{}", sponsor);