feat(tools): enhance CLI tool descriptions and add remote handling option

- Updated `cleanupTool` description to include detailed usage and arguments.
- Added optional `noRemote` flag to `cleanupTool` for local‑only tag deletion.
- Adjusted remote handling logic to respect the new `noRemote` flag.
- Expanded `closeTool` description with clear argument documentation.
- Expanded `openTool` description with detailed argument documentation.

src/tools/open.ts

@@ -9,7 +9,11 @@ import { getBinaryName } from "../core/utils";
  * Returns instructions for attaching to and cleaning up the session.
  */
 export const openTool = tool({
-  description: "Launch multiple OpenCode models in tmux",
+  description: `Launch multiple OpenCode models in tmux.
+
+Arguments:
+- \`sessionName\` (string, required): tmux session name to create.
+- \`models\` (array of strings, required): one or more OpenCode model IDs to launch.`,
   args: {
     sessionName: tool.schema
       .string()