fix(install): skip MarkAliasInstalled when alias was already present

Composer's `Transaction::calculateOperations` only emits a
MarkAliasInstalledOperation when the alias isn't already in
`presentAliasMap`. Mirror that here: walk installed.json for each
package being installed/updated, recover its prior alias set (explicit
`extra.branch-alias` entries plus the synthetic `9999999-dev` alias for
`default-branch: true` dev packages), and suppress the trace line when
the new lock's alias normalized version was already there. Avoids the
spurious "Marking ... as installed" emitted on a same-alias dev ref bump.

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/mozart-registry/src/resolver.rs b/crates/mozart-registry/src/resolver.rs
index 0716246..f7feddd 100644
--- a/crates/mozart-registry/src/resolver.rs
+++ b/crates/mozart-registry/src/resolver.rs
@@ -208,7 +208,7 @@ fn has_numeric_alias_prefix(branch: &str) -> bool {
 /// This is the form Composer's `Locker::lockPackages` writes into the
 /// `aliases` block of `composer.lock` and the form `Pool` indexes for
 /// constraint matching, so Mozart needs to use it too.
-pub(crate) fn normalize_branch_alias_target(alias_target: &str) -> Option<String> {
+pub fn normalize_branch_alias_target(alias_target: &str) -> Option<String> {
     let trimmed = alias_target.trim();
     let lower = trimmed.to_lowercase();
     let base = lower.strip_suffix("-dev")?;