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, 5 insertions, 3 deletions

diff --git a/crates/shirabe/src/package/version/version_bumper.rs b/crates/shirabe/src/package/version/version_bumper.rs
index 4f2d3242..e1f58942 100644
--- a/crates/shirabe/src/package/version/version_bumper.rs
+++ b/crates/shirabe/src/package/version/version_bumper.rs
@@ -7,6 +7,7 @@ use crate::package::version::VersionParser;
 use crate::util::Platform;
 use indexmap::IndexMap;
 use shirabe_external_packages::composer::pcre::{CaptureKey, Preg};
+use shirabe_php_shim::php_regex;
 use shirabe_semver::Intervals;
 use shirabe_semver::constraint::AnyConstraint;
 
@@ -45,11 +46,12 @@ impl VersionBumper {
             return Ok(pretty_constraint);
         }
 
-        let major = Preg::replace(r"{^([1-9][0-9]*|0\.\d+).*}", "$1", &version);
-        let version_without_suffix = Preg::replace(r"{(?:\.(?:0|9999999))+(-dev)?$}", "", &version);
+        let major = Preg::replace(php_regex!(r"{^([1-9][0-9]*|0\.\d+).*}"), "$1", &version);
+        let version_without_suffix =
+            Preg::replace(php_regex!(r"{(?:\.(?:0|9999999))+(-dev)?$}"), "", &version);
         let new_pretty_constraint = format!("^{}", version_without_suffix);
 
-        if !Preg::is_match(r"{^\^\d+(\.\d+)*$}", &new_pretty_constraint) {
+        if !Preg::is_match(php_regex!(r"{^\^\d+(\.\d+)*$}"), &new_pretty_constraint) {
             return Ok(pretty_constraint);
         }