Chat Modes -> Agents (#433)

* Migrating chat modes to agents now that's been released to stable

* Fixing collections

* Fixing names of agents

* Formatting

* name too long

* Escaping C# agent name

collections/rust-mcp-development.collection.yml

@@ -1,14 +1,25 @@
 id: rust-mcp-development
 name: Rust MCP Server Development
 description: Build high-performance Model Context Protocol servers in Rust using the official rmcp SDK with async/await, procedural macros, and type-safe implementations.
-tags: [rust, mcp, model-context-protocol, server-development, sdk, tokio, async, macros, rmcp]
+tags:
+  [
+    rust,
+    mcp,
+    model-context-protocol,
+    server-development,
+    sdk,
+    tokio,
+    async,
+    macros,
+    rmcp,
+  ]
 items:
   - path: instructions/rust-mcp-server.instructions.md
     kind: instruction
   - path: prompts/rust-mcp-server-generator.prompt.md
     kind: prompt
-  - path: chatmodes/rust-mcp-expert.chatmode.md
-    kind: chat-mode
+  - path: agents/rust-mcp-expert.agent.md
+    kind: agent
     usage: |
       recommended
 
@@ -34,4 +45,3 @@ items:
 display:
   ordering: manual
   show_badge: true
-