perf(regex): eliminate per-call clone overhead in preg_* dispatch

regex::Regex::clone() does not share the underlying meta engine's
search-cache pool, so every fresh clone pays a ~10us warmup cost on
its first use. Two changes together eliminate this across nearly all
preg_* call sites:

- A php_regex! macro resolves PHP-style patterns to a per-call-site
  &'static regex::Regex (via regex-macro's LazyLock), applied at the
  majority of call sites throughout the codebase.
- Call sites still passing dynamic pattern strings go through
  PATTERN_CACHE, which now stores Arc<(Regex, bool)> and hands out
  Arc::clone()s instead of cloning the Regex itself.

PregPattern::resolve() returns a ResolvedPattern enum (Arc or
'static reference) rather than an owned Regex, so neither path ever
clones the Regex proper.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/crates/shirabe/src/util/gitlab.rs b/crates/shirabe/src/util/gitlab.rs
index eae26f0e..4a636efa 100644
--- a/crates/shirabe/src/util/gitlab.rs
+++ b/crates/shirabe/src/util/gitlab.rs
@@ -10,7 +10,9 @@ use crate::util::HttpDownloader;
 use crate::util::ProcessExecutor;
 use indexmap::IndexMap;
 use shirabe_external_packages::composer::pcre::Preg;
-use shirabe_php_shim::{PhpMixed, RuntimeException, http_build_query, json_decode, time};
+use shirabe_php_shim::{
+    PhpMixed, RuntimeException, http_build_query, json_decode, php_regex, time,
+};
 
 #[derive(Debug)]
 pub struct GitLab {
@@ -50,7 +52,7 @@ impl GitLab {
 
     pub fn authorize_oauth(&mut self, origin_url: &str) -> bool {
         // before composer 1.9, origin URLs had no port number in them
-        let bc_origin_url = Preg::replace("{:\\d+}", "", origin_url);
+        let bc_origin_url = Preg::replace(php_regex!("{:\\d+}"), "", origin_url);
 
         let gitlab_domains = self.config.borrow_mut().get("gitlab-domains");
         let domains = match gitlab_domains.as_array() {