[OK] Created single change: 26-04-09T21-17_demo

Files:
  .sspec\changes\26-04-09T21-17_demo/
  ├── spec.md      # Change definition
  ├── tasks.md     # Execution plan
  ├── memory.md    # Scoped memory
  └── reference/   # Auxiliary files

Next:
  1. Read sspec-design skill
  2. Fill spec.md, then @align with the user before implementation
  3. Use `sspec change scaffold` to add design/revision files when needed
