fix(resolver): strip inline #ref and gate alias trace on alias stability

Two related parity gaps surfaced by the `alias-with-reference` fixture:

1. A root require like `dev-main#abcd as 1.0.0` left the SAT-side
   constraint as `dev-main#abcd`, which no candidate matched, so
   resolution failed before the alias could be materialized. Mirror
   Composer's `extractAliases` regex (which captures only the
   constraint up to `#`) and `RootPackageLoader::extractReferences`
   (which records the hash separately): drop the trailing `#hex` from
   the resolver-side constraint and from the alias's left-hand side.
   Lockfile generation already pulls the reference back out of the
   raw require map for the post-resolve override.

2. `MarkAliasInstalled`'s trace line gated the reference suffix on
   the *target* package's stability, so a stable alias like `1.0.0`
   pointing at a dev-branch target rendered as `1.0.0 abcd`. Mirror
   `AliasPackage::getFullPrettyVersion`: the alias decides on its own
   whether to append the suffix based on its own normalized version,
   so a stable alias skips the suffix even when the target is dev.

1 files changed, 24 insertions, 0 deletions

diff --git a/crates/mozart-registry/src/installer_executor/mod.rs b/crates/mozart-registry/src/installer_executor/mod.rs
index c344ba4..c29e32c 100644
--- a/crates/mozart-registry/src/installer_executor/mod.rs
+++ b/crates/mozart-registry/src/installer_executor/mod.rs
@@ -110,6 +110,30 @@ pub fn format_full_pretty_with_pretty(pretty_version: &str, pkg: &LockedPackage)
     )
 }
 
+/// Render an alias's full pretty version: the alias's own pretty form for
+/// the visible text, the alias's *normalized* version for the dev-stability
+/// gate, and the target package's source/dist references for the suffix.
+/// Mirrors `AliasPackage::getFullPrettyVersion`, where the alias decides on
+/// its own whether to append a reference based on its own stability — so a
+/// stable alias like `1.0.0` skips the suffix even when the target is a dev
+/// branch.
+pub fn format_full_pretty_alias(
+    alias_pretty: &str,
+    alias_version: &str,
+    target: &LockedPackage,
+) -> String {
+    let source_ref = target.source.as_ref().and_then(|s| s.reference.as_deref());
+    let dist_ref = target.dist.as_ref().and_then(|d| d.reference.as_deref());
+    let source_type = target.source.as_ref().map(|s| s.source_type.as_str());
+    format_full_pretty_with_refs(
+        alias_pretty,
+        alias_version,
+        source_ref,
+        dist_ref,
+        source_type,
+    )
+}
+
 /// Same as [`format_full_pretty_version_for_installed`] but lets the caller
 /// supply an alternate pretty version. Used when emitting
 /// `MarkAliasUninstalled`: the alias's `1.0.x-dev` text needs to be rendered