fix(skills): preserve preparation traces on the package path

Keep repository projection timing and verify both discovery and installed-version preparation without adding inventory work to the fast path.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

server/src/services/skill-package-runtime.ts

@@ -87,7 +87,7 @@ export function skillPackageRuntime(db: Db) {
     return [...files, ...generatedFiles];
   }
   async function materialize(version: StoredSkillVersion, directory: string) {
-    const files = await projection(version);
+    const files = await measureRunPhase("skills.repository.read", () => projection(version));
     const parent = path.dirname(directory);
     await ensureSkillCacheDirectory(parent, true);
     if (await measureRunPhase("skills.version.verify", () => verifySkillPackageDirectory(directory, files), { fileCount: files.length })) return directory;