fix(cli): handle session.error in run command to prevent infinite wait

When session.error occurs with incomplete todos, the run command now:
- Captures the error via handleSessionError()
- Exits with code 1 instead of waiting indefinitely
- Shows clear error message to user

Previously, run command ignored session.error events, causing infinite
'Waiting: N todos remaining' loop when agent errors occurred.

🤖 Generated with assistance of OhMyOpenCode
https://github.com/code-yeongyu/oh-my-opencode

src/cli/run/runner.ts

@@ -87,6 +87,16 @@ export async function run(options: RunOptions): Promise<number> {
           continue
         }
 
+        // Check if session errored - exit with failure if so
+        if (eventState.mainSessionError) {
+          console.error(pc.red(`\n\nSession ended with error: ${eventState.lastError}`))
+          console.error(pc.yellow("Check if todos were completed before the error."))
+          abortController.abort()
+          await eventProcessor.catch(() => {})
+          cleanup()
+          return 1
+        }
+
         const shouldExit = await checkCompletionConditions(ctx)
         if (shouldExit) {
           console.log(pc.green("\n\nAll tasks completed."))