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, 3 insertions, 3 deletions

diff --git a/crates/shirabe/src/command/package_discovery_trait.rs b/crates/shirabe/src/command/package_discovery_trait.rs
index e5427514..f8f7cede 100644
--- a/crates/shirabe/src/command/package_discovery_trait.rs
+++ b/crates/shirabe/src/command/package_discovery_trait.rs
@@ -24,7 +24,7 @@ use shirabe_external_packages::symfony::console::output::OutputInterface;
 use shirabe_php_shim::{
     Exception, InvalidArgumentException, LogicException, PHP_EOL, PhpMixed, array_keys,
     array_slice, asort, explode, file_get_contents, implode, in_array, is_array, is_file,
-    is_numeric, json_decode, levenshtein, strlen, strpos, trim,
+    is_numeric, json_decode, levenshtein, php_regex, strlen, strpos, trim,
 };
 
 /// @internal
@@ -145,7 +145,7 @@ pub trait PackageDiscoveryTrait: BaseCommand {
             for mut requirement in requires_norm {
                 if requirement.contains_key("version")
                     && Preg::is_match(
-                        r"{^\d+(\.\d+)?$}",
+                        php_regex!(r"{^\d+(\.\d+)?$}"),
                         requirement.get("version").map(|s| s.as_str()).unwrap_or(""),
                     )
                 {
@@ -337,7 +337,7 @@ pub trait PackageDiscoveryTrait: BaseCommand {
 
                             let mut m: IndexMap<CaptureKey, String> = IndexMap::new();
                             if Preg::is_match3(
-                                r"{^\s*(?P<name>[\S/]+)(?:\s+(?P<version>\S+))?\s*$}",
+                                php_regex!(r"{^\s*(?P<name>[\S/]+)(?:\s+(?P<version>\S+))?\s*$}"),
                                 &selection,
                                 Some(&mut m),
                             ) {