feat(plugin): let links and release dates cross the RPC boundary

The link getters and setters and the release date accessors were explicit
errors for every non-empty value, because an immutable value has no entity
to point a handle at. They now cross as materialized values: the descriptor
names the real class and the constructor arguments, and each side builds a
genuine instance of its own.

The semver constraint a link holds is encoded structurally rather than
re-parsed from its string form, so the pretty strings and the conjunctive
flag survive the crossing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/crates/shirabe-semver/src/constraint/any_constraint.rs b/crates/shirabe-semver/src/constraint/any_constraint.rs
index b61a36fb..37541deb 100644
--- a/crates/shirabe-semver/src/constraint/any_constraint.rs
+++ b/crates/shirabe-semver/src/constraint/any_constraint.rs
@@ -118,6 +118,19 @@ impl AnyConstraint {
         matches!(self, Self::MatchNone(_))
     }
 
+    /// The pretty string as stored, without the `getPrettyString()` fallback to the
+    /// constraint's string form. PHP has no such reader — `$prettyString` is protected — so
+    /// this exists for callers that must round-trip a constraint without inventing a value
+    /// for the unset case.
+    pub fn pretty_string(&self) -> Option<&str> {
+        match self {
+            Self::Simple(c) => c.pretty_string.as_deref(),
+            Self::Multi(c) => c.pretty_string.as_deref(),
+            Self::MatchAll(c) => c.pretty_string.as_deref(),
+            Self::MatchNone(c) => c.pretty_string.as_deref(),
+        }
+    }
+
     /// PHP exposes `ConstraintInterface::setPrettyString()` and defaults the
     /// pretty string to the constraint's string form when unset. This port takes
     /// the pretty string at construction instead; this setter exists only so