fix(skill): type expected skill failures (#28885)

packages/opencode/src/tool/skill.ts

@@ -22,12 +22,9 @@ export const SkillTool = Tool.define(
       parameters: Parameters,
       execute: (params: Schema.Schema.Type<typeof Parameters>, ctx: Tool.Context) =>
         Effect.gen(function* () {
-          const info = yield* skill.get(params.name)
-          if (!info) {
-            const all = yield* skill.all()
-            const available = all.map((item) => item.name).join(", ")
-            throw new Error(`Skill "${params.name}" not found. Available skills: ${available || "none"}`)
-          }
+          const info = yield* skill
+            .require(params.name)
+            .pipe(Effect.catchTag("Skill.NotFoundError", (error) => Effect.die(new Error(error.message))))
 
           yield* ctx.ask({
             permission: "skill",