fix(semver): resolve shirabe-semver compile errors

- Replace RefCell with Mutex in Constraint for thread safety
- Add clone_box() to ConstraintInterface for cloning trait objects
- Propagate Result from Constraint::new() and unwrap at call sites
- Fix VersionParser instantiation (unit struct, not fn)
- Add indexmap dependency to shirabe-semver

1 files changed, 1 insertions, 0 deletions

diff --git a/Cargo.lock b/Cargo.lock
index b275c43..bd3ea0e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -931,6 +931,7 @@ name = "shirabe-semver"
 version = "0.0.1"
 dependencies = [
  "anyhow",
+ "indexmap",
  "shirabe-php-shim",
 ]