[Bug] check_task spam - repeated polling of same task IDs #102

Problem

Massive spam of check_task calls showing the same task IDs repeated dozens of times:

✓ check_task  tsk_c06c5f29a001bcnd7mkJTAguRq
✓ check_task  tsk_c06c5f29a002dHyuvbLOXPdCkR
✓ check_task  tsk_c06c5f29b001TTd14SorIbN4u8
... (repeated 20+ times)

Cause

Likely a polling loop that's checking task status too frequently or not stopping when tasks complete.

Files

• Task polling logic in session or task management code
• Possibly packages/opencode/src/cli/lite/index.ts

Acceptance Criteria

• check_task only shows once per status change
• No repeated polling of completed tasks
• Polling stops when task reaches terminal state