Add CLIAdapterModule with pretty JSONL formatting

New src/cli/format-event.ts handles formatting OpenCode JSONL events:
- step_start: skip in normal mode, show in debug
- text: display as-is
- tool_use: show errors, skip in normal mode
- step_finish: show message + tokens/cost in debug
- error: display error message

Exports cliAdapter.formatStdoutEvent for Paperclip UI to call.
Also fixes ui-parser.ts to re-export from format-event.ts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/index.ts

@@ -3,6 +3,19 @@ export const label = "OpenCode (Kubernetes)";
 
 export const models: undefined = undefined;
 
+import type { CLIAdapterModule } from "@paperclipai/adapter-utils";
+import { formatEvent } from "./cli/format-event.js";
+
+export const cliAdapter: CLIAdapterModule = {
+  type,
+  formatStdoutEvent: (line: string, debug: boolean) => {
+    const formatted = formatEvent(line, debug);
+    if (formatted) {
+      console.log(formatted);
+    }
+  },
+};
+
 export const agentConfigurationDoc = `# opencode_k8s agent configuration
 
 Adapter: opencode_k8s