refactor(package): rename traits and switch dep maps to IndexMap

Rename Package/CompletePackage to PackageInterface/CompletePackageInterface
to mirror Composer's interface names, and split each into its own module
under crates/mozart-core/src/package/.

Switch dependency-link and metadata maps from BTreeMap to indexmap::IndexMap
so serialized JSON preserves the original key ordering rather than sorting
alphabetically — matching PHP associative-array semantics. The
--sort-packages behaviour in `require` is preserved via sort_unstable_keys.

1 files changed, 1 insertions, 2 deletions

diff --git a/crates/mozart-core/src/repository/vcs_bridge.rs b/crates/mozart-core/src/repository/vcs_bridge.rs
index 18a8420..79c0c5b 100644
--- a/crates/mozart-core/src/repository/vcs_bridge.rs
+++ b/crates/mozart-core/src/repository/vcs_bridge.rs
@@ -10,7 +10,6 @@ use crate::repository::resolver::{parse_normalized, version_stability};
 use crate::repository::vcs::DriverConfig;
 use crate::vcs::repository::{VcsPackageVersion, VcsRepository};
 use indexmap::IndexMap;
-use std::collections::BTreeMap;
 
 /// Scan all VCS-type repositories and collect package versions.
 ///
@@ -191,7 +190,7 @@ pub fn vcs_to_packagist_version(vpkg: &VcsPackageVersion) -> PackagistVersion {
 }
 
 /// Extract a dependency map from composer.json JSON.
-fn extract_dep_map(json: &serde_json::Value, key: &str) -> BTreeMap<String, String> {
+fn extract_dep_map(json: &serde_json::Value, key: &str) -> indexmap::IndexMap<String, String> {
     json.get(key)
         .and_then(|v| v.as_object())
         .map(|obj| {