fixture_id: 03_no_materials_ambiguous
expected_routing_class: clarify
expected_destination: clarification_only
escape_hatch_applied: false
notes: |
  Materials: none. Intent: ambiguous ("help me with my paper" — at which stage?).

  Per Routing Discipline Step 3 (no materials + ambiguous), trigger clarification.
  Per shared/references/intent_clarification_protocol.md worked example 3, the response
  should enumerate stage-based options (Socratic / pipeline / drafting / reviewer).

  Pass criteria:
  - Response asks clarification with a-d options
  - Options cover Socratic mode, pipeline start, drafting, and reviewer modes
  - Does NOT silently start any phase
