platform/multiplatform: add multiplatform client with cross-ref

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: Ie2cf48136e5a9017265a3b0ef26619356a6a6964

src/platform/curseforge.rs

@@ -391,6 +391,18 @@ impl PlatformClient for CurseForgePlatform {
 
     Ok(None)
   }
+
+  async fn request_project_from_slug(
+    &self,
+    slug: &str,
+  ) -> Result<Option<Project>> {
+    // Try to fetch project by slug using search API
+    match self.search_project_by_slug(slug).await {
+      Ok(cf_project) => Ok(Some(self.convert_project(cf_project))),
+      Err(PakkerError::ProjectNotFound(_)) => Ok(None),
+      Err(e) => Err(e),
+    }
+  }
 }
 
 // CurseForge API models