refactor(semver): change ConstraintInterface to a closed enum

Replace the dyn ConstraintInterface trait objects with an AnyConstraint
enum closing over its four implementors (Simple, Multi, MatchAll,
MatchNone), mirroring the earlier Rule enum conversion. Rename
constraint.rs to simple_constraint.rs to match the renamed Constraint
type.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/crates/shirabe-semver/src/comparator.rs b/crates/shirabe-semver/src/comparator.rs
index 6db06d4..36a4142 100644
--- a/crates/shirabe-semver/src/comparator.rs
+++ b/crates/shirabe-semver/src/comparator.rs
@@ -1,6 +1,6 @@
 //! ref: composer/vendor/composer/semver/src/Comparator.php
 
-use crate::constraint::Constraint;
+use crate::constraint::SimpleConstraint;
 
 pub struct Comparator;
 
@@ -30,7 +30,10 @@ impl Comparator {
     }
 
     pub fn compare(version1: String, operator: String, version2: String) -> bool {
-        let constraint = Constraint::new(operator, version2);
-        constraint.match_specific(&Constraint::new("==".to_string(), version1), true)
+        let constraint = SimpleConstraint::new(operator, version2, None);
+        constraint.match_specific(
+            &SimpleConstraint::new("==".to_string(), version1, None),
+            true,
+        )
     }
 }