begin;
set local standard_conforming_strings = on;
set local lock_timeout = '5s';
select pg_advisory_xact_lock(hashtextextended('proposal-rollback:' || E'9b2b5fa4-0e0d-5db0-aa4d-6fd102889946', 0));
do $rollback$
declare
  affected integer;
  approval_now jsonb;
begin
  perform 1 from kb_stage.kb_proposals
   where id = E'9b2b5fa4-0e0d-5db0-aa4d-6fd102889946'::uuid
   for update;
  if not found then
    raise exception 'proposal rollback: proposal row missing';
  end if;
  if not exists (
    select 1 from kb_stage.kb_proposals
     where id = E'9b2b5fa4-0e0d-5db0-aa4d-6fd102889946'::uuid
       and proposal_type = 'approve_claim'
       and status = 'applied'
       and payload = E'{"apply_payload":{"agent_id":null,"claims":[{"confidence":0.9,"created_by":null,"id":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","status":"open","superseded_by":null,"tags":["working-leo","clone-canary"],"text":"An approved strict proposal can create exact canonical rows atomically.","type":"structural"},{"confidence":0.85,"created_by":null,"id":"71a3331b-fb75-5e18-aa61-b256bc38af36","status":"open","superseded_by":null,"tags":["working-leo","row-proof"],"text":"Row-level proof is the authority for canonical KB state.","type":"concept"}],"contract_version":2,"edges":[{"created_by":null,"edge_type":"supports","from_claim":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","to_claim":"71a3331b-fb75-5e18-aa61-b256bc38af36","weight":0.75}],"evidence":[{"claim_id":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","created_by":null,"role":"grounds","source_id":"ed9da5f1-846e-5298-8689-15027a7ce56d","weight":0.9},{"claim_id":"71a3331b-fb75-5e18-aa61-b256bc38af36","created_by":null,"role":"illustrates","source_id":"a86f55dc-5058-585d-b492-a4f1d932670f","weight":0.8}],"reasoning_tools":[{"agent_id":null,"category":"verification","description":"Verify approved proposal to canonical graph lifecycle in a disposable clone.","id":"2b8a01ea-125c-5d90-a9b9-39ccb0a1c9e0","name":"Canonical row proof canary"}],"sources":[{"created_by":null,"excerpt":"Disposable clone lifecycle canary source A.","hash":"approve-claim-canary-08c2358330-a","id":"ed9da5f1-846e-5298-8689-15027a7ce56d","source_type":"observation","storage_path":null,"url":null},{"created_by":null,"excerpt":"Disposable clone lifecycle canary source B.","hash":"approve-claim-canary-08c2358330-b","id":"a86f55dc-5058-585d-b492-a4f1d932670f","source_type":"observation","storage_path":null,"url":null}]}}'::jsonb
       and reviewed_by_handle is not distinct from E'm3ta'
       and reviewed_by_agent_id is not distinct from E'11111111-1111-4111-8111-111111111111'::uuid
       and reviewed_at is not distinct from E'2026-07-15 01:59:03.105846+00'::timestamptz
       and review_note is not distinct from E'Reviewed exact strict payload inside the disposable clone.'
       and applied_by_handle is not distinct from E'kb-apply'
       and applied_by_agent_id is not distinct from E'44444444-4444-4444-4444-444444444444'::uuid
       and applied_at is not distinct from E'2026-07-15 01:59:04.449051+00'::timestamptz
  ) then
    raise exception 'proposal rollback: applied ledger does not match apply receipt';
  end if;
  select jsonb_build_object(
    'proposal_id', proposal_id::text,
    'proposal_type', proposal_type,
    'payload', payload,
    'reviewed_by_handle', reviewed_by_handle,
    'reviewed_by_agent_id', reviewed_by_agent_id::text,
    'reviewed_by_db_role', reviewed_by_db_role::text,
    'reviewed_at', reviewed_at::text,
    'review_note', review_note
  ) into approval_now
    from kb_stage.kb_proposal_approvals
   where proposal_id = E'9b2b5fa4-0e0d-5db0-aa4d-6fd102889946'::uuid;
  if approval_now is distinct from E'{"payload":{"apply_payload":{"agent_id":null,"claims":[{"confidence":0.9,"created_by":null,"id":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","status":"open","superseded_by":null,"tags":["working-leo","clone-canary"],"text":"An approved strict proposal can create exact canonical rows atomically.","type":"structural"},{"confidence":0.85,"created_by":null,"id":"71a3331b-fb75-5e18-aa61-b256bc38af36","status":"open","superseded_by":null,"tags":["working-leo","row-proof"],"text":"Row-level proof is the authority for canonical KB state.","type":"concept"}],"contract_version":2,"edges":[{"created_by":null,"edge_type":"supports","from_claim":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","to_claim":"71a3331b-fb75-5e18-aa61-b256bc38af36","weight":0.75}],"evidence":[{"claim_id":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","created_by":null,"role":"grounds","source_id":"ed9da5f1-846e-5298-8689-15027a7ce56d","weight":0.9},{"claim_id":"71a3331b-fb75-5e18-aa61-b256bc38af36","created_by":null,"role":"illustrates","source_id":"a86f55dc-5058-585d-b492-a4f1d932670f","weight":0.8}],"reasoning_tools":[{"agent_id":null,"category":"verification","description":"Verify approved proposal to canonical graph lifecycle in a disposable clone.","id":"2b8a01ea-125c-5d90-a9b9-39ccb0a1c9e0","name":"Canonical row proof canary"}],"sources":[{"created_by":null,"excerpt":"Disposable clone lifecycle canary source A.","hash":"approve-claim-canary-08c2358330-a","id":"ed9da5f1-846e-5298-8689-15027a7ce56d","source_type":"observation","storage_path":null,"url":null},{"created_by":null,"excerpt":"Disposable clone lifecycle canary source B.","hash":"approve-claim-canary-08c2358330-b","id":"a86f55dc-5058-585d-b492-a4f1d932670f","source_type":"observation","storage_path":null,"url":null}]}},"proposal_id":"9b2b5fa4-0e0d-5db0-aa4d-6fd102889946","proposal_type":"approve_claim","review_note":"Reviewed exact strict payload inside the disposable clone.","reviewed_at":"2026-07-15 01:59:03.105846+00","reviewed_by_agent_id":"11111111-1111-4111-8111-111111111111","reviewed_by_db_role":"kb_review","reviewed_by_handle":"m3ta"}'::jsonb then
    raise exception 'proposal rollback: immutable approval snapshot drifted';
  end if;
  if (select count(*) from public.claim_evidence t
       where t.id = E'dac3934f-b7ad-5205-8efe-a00163370a54'::uuid and to_jsonb(t) = E'{"claim_id":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","created_at":"2026-07-15T01:59:04.44165+00:00","created_by":null,"id":"dac3934f-b7ad-5205-8efe-a00163370a54","role":"grounds","source_id":"ed9da5f1-846e-5298-8689-15027a7ce56d","weight":0.9}'::jsonb) <> 1 then
    raise exception 'proposal rollback drift: claim_evidence[0] row does not match apply receipt';
  end if;
  if (select count(*) from public.claim_evidence t
       where t.id = E'13e580c5-458d-5146-aef3-8c74ffc43b7c'::uuid and to_jsonb(t) = E'{"claim_id":"71a3331b-fb75-5e18-aa61-b256bc38af36","created_at":"2026-07-15T01:59:04.44165+00:00","created_by":null,"id":"13e580c5-458d-5146-aef3-8c74ffc43b7c","role":"illustrates","source_id":"a86f55dc-5058-585d-b492-a4f1d932670f","weight":0.8}'::jsonb) <> 1 then
    raise exception 'proposal rollback drift: claim_evidence[1] row does not match apply receipt';
  end if;
  if (select count(*) from public.claim_edges t
       where t.id = E'b28d8770-9ac9-5b5f-bfe2-7280d7422a21'::uuid and to_jsonb(t) = E'{"created_at":"2026-07-15T01:59:04.44165+00:00","created_by":null,"edge_type":"supports","from_claim":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","id":"b28d8770-9ac9-5b5f-bfe2-7280d7422a21","to_claim":"71a3331b-fb75-5e18-aa61-b256bc38af36","weight":0.75}'::jsonb) <> 1 then
    raise exception 'proposal rollback drift: claim_edges[0] row does not match apply receipt';
  end if;
  if (select count(*) from public.reasoning_tools t
       where t.id = E'2b8a01ea-125c-5d90-a9b9-39ccb0a1c9e0'::uuid and to_jsonb(t) = E'{"agent_id":null,"category":"verification","created_at":"2026-07-15T01:59:04.44165+00:00","description":"Verify approved proposal to canonical graph lifecycle in a disposable clone.","id":"2b8a01ea-125c-5d90-a9b9-39ccb0a1c9e0","name":"Canonical row proof canary"}'::jsonb) <> 1 then
    raise exception 'proposal rollback drift: reasoning_tools[0] row does not match apply receipt';
  end if;
  if (select count(*) from public.sources t
       where t.id = E'ed9da5f1-846e-5298-8689-15027a7ce56d'::uuid and to_jsonb(t) = E'{"captured_at":null,"created_at":"2026-07-15T01:59:04.44165+00:00","created_by":null,"excerpt":"Disposable clone lifecycle canary source A.","hash":"approve-claim-canary-08c2358330-a","id":"ed9da5f1-846e-5298-8689-15027a7ce56d","source_type":"observation","storage_path":null,"url":null}'::jsonb) <> 1 then
    raise exception 'proposal rollback drift: sources[0] row does not match apply receipt';
  end if;
  if (select count(*) from public.sources t
       where t.id = E'a86f55dc-5058-585d-b492-a4f1d932670f'::uuid and to_jsonb(t) = E'{"captured_at":null,"created_at":"2026-07-15T01:59:04.44165+00:00","created_by":null,"excerpt":"Disposable clone lifecycle canary source B.","hash":"approve-claim-canary-08c2358330-b","id":"a86f55dc-5058-585d-b492-a4f1d932670f","source_type":"observation","storage_path":null,"url":null}'::jsonb) <> 1 then
    raise exception 'proposal rollback drift: sources[1] row does not match apply receipt';
  end if;
  if (select count(*) from public.claims t
       where t.id = E'71a3331b-fb75-5e18-aa61-b256bc38af36'::uuid and to_jsonb(t) = E'{"confidence":0.85,"created_at":"2026-07-15T01:59:04.44165+00:00","created_by":null,"id":"71a3331b-fb75-5e18-aa61-b256bc38af36","status":"open","superseded_by":null,"tags":["working-leo","row-proof"],"text":"Row-level proof is the authority for canonical KB state.","type":"concept","updated_at":"2026-07-15T01:59:04.44165+00:00"}'::jsonb) <> 1 then
    raise exception 'proposal rollback drift: claims[0] row does not match apply receipt';
  end if;
  if (select count(*) from public.claims t
       where t.id = E'38dead14-6b1d-5909-99c4-3c45ad2dd21f'::uuid and to_jsonb(t) = E'{"confidence":0.9,"created_at":"2026-07-15T01:59:04.44165+00:00","created_by":null,"id":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","status":"open","superseded_by":null,"tags":["working-leo","clone-canary"],"text":"An approved strict proposal can create exact canonical rows atomically.","type":"structural","updated_at":"2026-07-15T01:59:04.44165+00:00"}'::jsonb) <> 1 then
    raise exception 'proposal rollback drift: claims[1] row does not match apply receipt';
  end if;
  delete from public.claim_evidence where id in (E'dac3934f-b7ad-5205-8efe-a00163370a54'::uuid, E'13e580c5-458d-5146-aef3-8c74ffc43b7c'::uuid);
  get diagnostics affected = row_count;
  if affected <> 2 then
    raise exception 'proposal rollback count mismatch for claim_evidence: expected 2, got %', affected;
  end if;
  delete from public.claim_edges where id in (E'b28d8770-9ac9-5b5f-bfe2-7280d7422a21'::uuid);
  get diagnostics affected = row_count;
  if affected <> 1 then
    raise exception 'proposal rollback count mismatch for claim_edges: expected 1, got %', affected;
  end if;
  delete from public.reasoning_tools where id in (E'2b8a01ea-125c-5d90-a9b9-39ccb0a1c9e0'::uuid);
  get diagnostics affected = row_count;
  if affected <> 1 then
    raise exception 'proposal rollback count mismatch for reasoning_tools: expected 1, got %', affected;
  end if;
  delete from public.sources where id in (E'ed9da5f1-846e-5298-8689-15027a7ce56d'::uuid, E'a86f55dc-5058-585d-b492-a4f1d932670f'::uuid);
  get diagnostics affected = row_count;
  if affected <> 2 then
    raise exception 'proposal rollback count mismatch for sources: expected 2, got %', affected;
  end if;
  delete from public.claims where id in (E'71a3331b-fb75-5e18-aa61-b256bc38af36'::uuid, E'38dead14-6b1d-5909-99c4-3c45ad2dd21f'::uuid);
  get diagnostics affected = row_count;
  if affected <> 2 then
    raise exception 'proposal rollback count mismatch for claims: expected 2, got %', affected;
  end if;
  update kb_stage.kb_proposals
     set status = 'approved',
         applied_by_handle = null,
         applied_by_agent_id = null,
         applied_at = null,
         updated_at = now()
   where id = E'9b2b5fa4-0e0d-5db0-aa4d-6fd102889946'::uuid
     and status = 'applied'
     and payload = E'{"apply_payload":{"agent_id":null,"claims":[{"confidence":0.9,"created_by":null,"id":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","status":"open","superseded_by":null,"tags":["working-leo","clone-canary"],"text":"An approved strict proposal can create exact canonical rows atomically.","type":"structural"},{"confidence":0.85,"created_by":null,"id":"71a3331b-fb75-5e18-aa61-b256bc38af36","status":"open","superseded_by":null,"tags":["working-leo","row-proof"],"text":"Row-level proof is the authority for canonical KB state.","type":"concept"}],"contract_version":2,"edges":[{"created_by":null,"edge_type":"supports","from_claim":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","to_claim":"71a3331b-fb75-5e18-aa61-b256bc38af36","weight":0.75}],"evidence":[{"claim_id":"38dead14-6b1d-5909-99c4-3c45ad2dd21f","created_by":null,"role":"grounds","source_id":"ed9da5f1-846e-5298-8689-15027a7ce56d","weight":0.9},{"claim_id":"71a3331b-fb75-5e18-aa61-b256bc38af36","created_by":null,"role":"illustrates","source_id":"a86f55dc-5058-585d-b492-a4f1d932670f","weight":0.8}],"reasoning_tools":[{"agent_id":null,"category":"verification","description":"Verify approved proposal to canonical graph lifecycle in a disposable clone.","id":"2b8a01ea-125c-5d90-a9b9-39ccb0a1c9e0","name":"Canonical row proof canary"}],"sources":[{"created_by":null,"excerpt":"Disposable clone lifecycle canary source A.","hash":"approve-claim-canary-08c2358330-a","id":"ed9da5f1-846e-5298-8689-15027a7ce56d","source_type":"observation","storage_path":null,"url":null},{"created_by":null,"excerpt":"Disposable clone lifecycle canary source B.","hash":"approve-claim-canary-08c2358330-b","id":"a86f55dc-5058-585d-b492-a4f1d932670f","source_type":"observation","storage_path":null,"url":null}]}}'::jsonb
     and applied_at is not distinct from E'2026-07-15 01:59:04.449051+00'::timestamptz;
  get diagnostics affected = row_count;
  if affected <> 1 then
    raise exception 'proposal rollback: expected one applied ledger row, got %', affected;
  end if;
end
$rollback$;
commit;