// Synthetic data for isolated engineering tests only. Not production reference evidence.
export function planFixture(){
  const binding={analysis_id:"analysis_fixture",drama_id:"drama_fixture"};
  const shared={target_binding:binding,withheld_information:["The author"]};
  const questions=["Who left this test note?","Why was the test note hidden?","Will the note resolve this dispute?","How will they find the author?"];
  return {
    recipe:{schema_version:"2.0",...binding,duration_strategy:"content_led",withheld_information:shared.withheld_information,reference_id:"ref_fixture",reference_evidence_tier:"A",ending:{cutoff_reason:"Synthetic ending with reaction",before_withheld_reveal:true},segments:[{id:"one",hook_id:"hook_1",episode_id:"ep_test",episode:1,source_start:0,source_end:10,target_start:0,target_end:10,semantic_role:"Synthetic question",continuity_group:"scene",source_gap_before:0,confidence:"high",reveal_risk:"low",cut_reason:"Test unit complete"}]},
    hookMap:{...shared,mainline_question:questions[0],beats:["beat","phase","mainline"].map((hook_level,index)=>({id:`hook_${String(index+1)}`,target_start:index*3,target_end:index===2?10:(index+1)*3,hook_level,audience_question_before:questions[index],information_revealed:["A test clue"],revealed_categories:["evidence"],question_resolved:"A clue exists",new_question:questions[index+1],expectation_a:null,actual_b:null,hook_c:null,withheld_information:shared.withheld_information,evidence:"Synthetic span"})),phase_hooks:[{id:"phase",beat_ids:["hook_1","hook_2"],stage_payoff:"The clue was found",escalated_question:questions[2]}],final_hook:{beat_id:"hook_3",cutoff_after_complete_action:true,reaction_retained:true,answer_withheld:true},final_unanswered_question:questions[3]},
    strategy:{...shared,narrative_structure:{mode:"linear",reason:"Synthetic causal sequence for engineering verification"},opening:{mode:"original_footage",voiceover_authorized:false},first_30_seconds:{central_promise:"Test clue"},character_amplification:{primary:"power",evidence:["Fixture"]},event_density:{major_events:["Test clue"]}},
    referenceCandidates:{candidates:[{id:"ref_fixture",platform:"Synthetic",reference_type:"short_drama_ad",origin_name:"Test-only publisher",origin_evidence_url:"https://example.com/title",playable_url:"https://example.com/video",evidence_url:"https://example.com/evidence",captured_at:new Date().toISOString(),full_video_access:true,evidence:{metrics:{views:10,likes:1}},genre_match:1,hook_match:1,replicability:1,market_recency:1}]},
    referenceAnalysis:{...shared,reference_id:"ref_fixture",structure:"Synthetic question then partial answer"},
    referenceRecipe:{...shared,reference_id:"ref_fixture",beats:[{role:"Synthetic question"}]},
    continuity:{...shared,checks:["Synthetic continuous shot"],findings:[]},
  };
}