tweak: adjust skill presentation to be a little less token heavy (#17098)

packages/opencode/src/session/system.ts

@@ -64,7 +64,9 @@ export namespace SystemPrompt {
     return [
       "Skills provide specialized instructions and workflows for specific tasks.",
       "Use the skill tool to load a skill when a task matches its description.",
-      list.length === 0 ? "No skills are currently available." : "\n" + Skill.fmt(list),
+      // the agents seem to ingest the information about skills a bit better if we present a more verbose
+      // version of them here and a less verbose version in tool description, rather than vice versa.
+      Skill.fmt(list, { verbose: true }),
     ].join("\n")
   }
 }