/* ff.js — 측류추출 유량 권장(FF) 대시보드 + 설정 에디터.
   Phase II: X-Kb-Token 인증 (설정/쓰기), auto-write 결과 표시. */
paneInit.ff = ffInit;

let ffTimer = null;

function ffToken() { return sessionStorage.getItem('kbToken') || ''; }

async function ffApi(method, path, body) {
  const h = { 'Content-Type': 'application/json' };
  const t = ffToken();
  if (t) h['X-Kb-Token'] = t;
  const res = await fetch(path, { method, headers: h, body: body ? JSON.stringify(body) : undefined });
  if (res.status === 401) throw new Error('인증 필요 — RAG 관리 탭에서 로그인하세요');
  if (!res.ok) throw new Error(`HTTP ${res.status}: ${await res.text()}`);
  return res.status === 204 ? null : res.json();
}

async function ffInit() {
  if (ffTimer) { clearInterval(ffTimer); ffTimer = null; }
  await ffLoadDash();
  ffTimer = setInterval(ffLoadDash, 3000);

  document.getElementById('ff-cfg-toggle').onclick = () => {
    const c = document.getElementById('ff-cfg');
    c.style.display = c.style.display === 'none' ? 'block' : 'none';
  };
  document.getElementById('ff-ramp-toggle').onclick = () => {
    const r = document.getElementById('ff-ramp');
    r.style.display = r.style.display === 'none' ? 'block' : 'none';
  };
  document.getElementById('ff-ramp-go').onclick = ffRampCompute;

  document.getElementById('ff-new').onclick = () => ffEditColumn(null);
  ffLoadConfig().catch(()=>{});

  // WP7: sim override — 가능하면 로드(403 무시)
  ffSimLoad();
}

// ── WP7: 램프 계산기 ──────────────────────────────────────────
async function ffRampCompute() {
  const g = id => document.getElementById(id);
  const params = new URLSearchParams({
    columnId: g('ff-ramp-colId').value,
    targetFeed: g('ff-ramp-targetFeed').value,
    deltaIAllow: g('ff-ramp-deltaI').value,
    sensibleGain: g('ff-ramp-sensibleGain').value || '',
    feedTempRef: g('ff-ramp-feedTempRef').value || '',
    floodLimit: g('ff-ramp-floodLimit').value || '',
    n: g('ff-ramp-n').value
  });
  const host = g('ff-ramp-result');
  host.innerHTML = '계산 중…';
  try {
    const data = await api('GET', '/api/ff/ramp-advisor?' + params.toString());
    if (data.hold) {
      host.innerHTML = `<div class="ff-ramp-hold">HOLD: ${esc(data.warnings?.join(', ') || '피드 불량')}</div>`;
      return;
    }
    host.innerHTML = `
      <table class="ff-ramp-table">
        <tr><td>현재 피드</td><td class="ff-num">${fmtVal(data.currentFeed)}</td></tr>
        <tr><td>목표 피드</td><td class="ff-num">${fmtVal(data.targetFeed)}</td></tr>
        <tr><td>클램프 목표</td><td class="ff-num ff-rec">${fmtVal(data.clampedTarget)}</td></tr>
        <tr><td>Ceiling</td><td class="ff-num">${fmtVal(data.ceiling?.value)} <small>(${esc(data.ceiling?.binding)})</small></td></tr>
        <tr><td>램프율</td><td class="ff-num">${fmtVal(data.rampRate?.value)} kg/hr·min <small>(${esc(data.rampRate?.binding)})</small></td></tr>
        <tr><td>예상 시간</td><td class="ff-num">${data.rampTimeMin != null ? Math.round(data.rampTimeMin) + '분' : '–'}</td></tr>
        <tr><td>스팀(현재)</td><td class="ff-num">${fmtVal(data.steam?.fiq6115From)}</td></tr>
        <tr><td>스팀(목표)</td><td class="ff-num">${fmtVal(data.steam?.fiq6115To)}</td></tr>
      </table>
      <div class="ff-ramp-warn">${(data.warnings||[]).map(w => esc(w)).join('<br>')}</div>`;
  } catch (e) {
    host.innerHTML = `<div class="ff-ramp-err">오류: ${esc(e.message)}</div>`;
  }
}

// ── WP7: Sim Override ─────────────────────────────────────────
async function ffSimLoad() {
  try {
    const data = await api('GET', '/api/ff/sim/override');
    document.getElementById('ff-sim').style.display = 'block';
    document.getElementById('ff-sim-enabled').checked = data.enabled;
    document.getElementById('ff-sim-values').value = JSON.stringify(data.values || {}, null, 2);
  } catch (e) {
    // 403 또는 미구현 → 패널 숨김
  }
  document.getElementById('ff-sim-apply').onclick = ffSimApply;
  document.getElementById('ff-sim-clear').onclick = ffSimClear;
  const ca = document.getElementById('ff-comp-apply');
  if (ca) { ca.onclick = ffCompApply; document.getElementById('ff-comp-clear').onclick = ffCompClear; ffCompRefresh(); }
}
async function ffCompRefresh() {
  try {
    const d = await ffApi('GET', '/api/ff/composition');
    const el = document.getElementById('ff-comp-list');
    const ents = Object.entries(d.fractions || {});
    el.innerHTML = ents.length ? '입력됨: ' + ents.map(([k, v]) => `${esc(k)}=${v}`).join(' · ') : '<small>입력 없음 (config K 사용)</small>';
  } catch (e) {}
}
async function ffCompApply() {
  const g = id => document.getElementById(id);
  const st = g('ff-comp-status');
  try {
    await ffApi('POST', '/api/ff/composition', { columnId: +g('ff-comp-col').value, streamKey: g('ff-comp-key').value, fraction: +g('ff-comp-frac').value });
    st.textContent = '입력됨'; st.className = 'ff-msg'; ffCompRefresh();
  } catch (e) { st.textContent = '실패: ' + e.message; st.className = 'ff-msg err'; }
}
async function ffCompClear() {
  const g = id => document.getElementById(id);
  const st = g('ff-comp-status');
  try {
    await ffApi('DELETE', `/api/ff/composition/${+g('ff-comp-col').value}/${encodeURIComponent(g('ff-comp-key').value)}`);
    st.textContent = '해제됨'; st.className = 'ff-msg'; ffCompRefresh();
  } catch (e) { st.textContent = '실패: ' + e.message; st.className = 'ff-msg err'; }
}
async function ffSimApply() {
  const enabled = document.getElementById('ff-sim-enabled').checked;
  let values = {};
  try { values = JSON.parse(document.getElementById('ff-sim-values').value || '{}'); } catch (e) {}
  try {
    const data = await ffApi('POST', '/api/ff/sim/override', { enabled, values });
    document.getElementById('ff-sim-status').textContent = '적용됨';
    document.getElementById('ff-sim-status').className = 'ff-msg';
    document.getElementById('ff-sim-values').value = JSON.stringify(data.values || {}, null, 2);
  } catch (e) {
    document.getElementById('ff-sim-status').textContent = '실패: ' + e.message;
    document.getElementById('ff-sim-status').className = 'ff-msg err';
  }
}
async function ffSimClear() {
  try {
    const data = await ffApi('DELETE', '/api/ff/sim/override');
    document.getElementById('ff-sim-enabled').checked = false;
    document.getElementById('ff-sim-values').value = '{}';
    document.getElementById('ff-sim-status').textContent = '해제됨';
    document.getElementById('ff-sim-status').className = 'ff-msg';
  } catch (e) {
    document.getElementById('ff-sim-status').textContent = '실패: ' + e.message;
    document.getElementById('ff-sim-status').className = 'ff-msg err';
  }
}

// ── 대시보드 (공개) ──────────────────────────────────────────────
async function ffLoadDash() {
  let data;
  try { data = await api('GET', '/api/ff/advisory'); }
  catch (e) { return; }
  const host = document.getElementById('ff-dash');
  if (!host) { clearInterval(ffTimer); ffTimer = null; return; }
  const cols = data.columns || [];
  if (!cols.length) { host.innerHTML = '<div class="ff-empty">활성 컬럼 없음</div>'; return; }
  host.innerHTML = cols.map(ffCard).join('');
}

function ffTrendIco(t) { return t > 0 ? '▲' : t < 0 ? '▼' : '–'; }

function ffArm(id) {
  if (!confirm(`컬럼 ${id} 전환류 모드를 ARM(가동) 하시겠습니까?\n드로우 중단·전량 환류가 권장됩니다(실제 쓰기는 별도 인가).`)) return;
  ffApi('POST', `/api/ff/recovery/${id}/arm`).then(()=>ffLoadDash()).catch(()=>{});
}
function ffCancelRecovery(id) {
  ffApi('POST', `/api/ff/recovery/${id}/cancel`).then(()=>ffLoadDash()).catch(()=>{});
}
function ffCard(c) {
  const rows = (c.streams || []).map(s => {
    const lvlTag = s.levelTag || '';
    const roleLabel = s.role === 'LevelDriven' && lvlTag
      ? `LevelDriven<br><span class="ff-lvl-by">레벨: ${esc(lvlTag)}</span>`
      : s.role === 'Commanded' ? 'Commanded' : 'Monitor';
    const writeInfo = s.lastWriteSp != null
      ? `<br><small class="ff-write${s.lastWriteError ? ' ff-write-err' : ''}">쓰기${s.lastWriteError ? ' 오류' : '됨'} ${fmtVal(s.lastWriteSp)}${s.lastWriteError ? ': '+esc(s.lastWriteError) : ''}</small>`
      : '';
    return `<tr class="${s.valid ? '' : 'ff-stale'}">
      <td>${esc(s.key)}</td><td class="ff-tag">${esc(s.flowTag)}</td>
      <td><span class="ff-role ff-role-${esc(s.role)}">${roleLabel}</span></td>
      <td class="ff-num">${fmtVal(s.pv)}</td>
      <td class="ff-num ff-rec">${s.recommendedSp==null?'–':fmtVal(s.recommendedSp)}</td>
      <td class="ff-num">${s.gap==null?'–':fmtVal(s.gap)}</td>
      <td>${ffTrendIco(s.trend)}</td>
      <td><span class="ff-grade ff-grade-${esc(s.grade)}"${s.gradeReason ? ` title="${esc(s.gradeReason)}"` : ''}>${esc(s.grade)}</span>${s.kObsSuggest!=null ? `<br><small class="ff-kobs">K~${fmtVal(s.kObsSuggest)}</small>` : ''}${writeInfo}</td>
    </tr>`;}).join('');
  const banner = c.transient
    ? `<div class="ff-transient">과도상태: ${esc(c.transientReason)} — 권장값 정착 대기</div>` : '';
  const mb = `물질수지: ${esc(c.massBalanceState)}` +
    (c.vLoss!=null ? ` · V_loss ${fmtVal(c.vLoss)}` : '') +
    (c.vLossMa!=null ? ` · V_loss(MA) ${fmtVal(c.vLossMa)}` : '') +
    (c.yield!=null ? ` · 수율 ${fmtVal(c.yield)}%` : '');
  const temps = (c.temps && c.temps.length)
    ? `<div class="ff-temps">${c.temps.map(t => `<span class="ff-temp${t.good?'':' ff-stale'}">${esc(t.tag)} ${t.raw==null?'–':fmtVal(t.raw)}${(t.pct!=null && t.pct!==t.raw)?` <small>PCT ${fmtVal(t.pct)}</small>`:''}</span>`).join(' · ')}</div>`
    : '';
  const thetaSug = (c.streams||[]).filter(s => s.thetaSuggestConf != null);
  const theta = thetaSug.length
    ? `<div class="ff-theta">θ 제안 <small>(passive)</small>: ${thetaSug.map(s=>`${esc(s.key)} ↑${fmtVal(s.thetaSuggestUpSec)}s ↓${fmtVal(s.thetaSuggestDnSec)}s <small>conf ${fmtVal(s.thetaSuggestConf)}</small>`).join(' · ')} — 운전원 수동 반영</div>`
    : '';
  const front = c.frontPositionState
    ? `<div class="ff-front${c.frontTrimAdvice?' ff-front-warn':''}">프론트: ${esc(c.frontPositionState)}${c.frontTrimAdvice?` → <b>${esc(c.frontTrimAdvice)}</b>`:''}</div>`
    : '';

  // WP7: 온도 프로파일 상태 뱃지
  const tpBadge = c.tempProfileState ? (() => {
    const tpClass = c.tempProfileState === '온도역전' ? 'ff-tp-inv'
      : c.tempProfileState === '프로파일붕괴' ? 'ff-tp-collapse'
      : c.tempProfileState === '약화' ? 'ff-tp-warn'
      : c.tempProfileState === '정상' ? 'ff-tp-ok'
      : 'ff-tp-na';
    const spanStr = (c.tempSpan != null && c.tempSpanRef != null)
      ? ` <small>span ${fmtVal(c.tempSpan)}/${fmtVal(c.tempSpanRef)}</small>` : '';
    const invStr = c.inversionPair ? ` <small>(${esc(c.inversionPair)})</small>` : '';
    return `<div class="ff-tp-badge ${tpClass}">${esc(c.tempProfileState)}${invStr}${spanStr}</div>`;
  })() : '';

  // WP5 1단계: 2-point front (상부 C−D / 하부 C−B)
  const f2cls = s => s === '상승' ? 'ff-f2-up' : s === '하강' ? 'ff-f2-dn' : 'ff-f2-ok';
  const front2 = (c.upperFrontState || c.lowerFrontState) ? `<div class="ff-front2">
    <span class="ff-f2 ${f2cls(c.lowerFrontState)}">하부(B) ${esc(c.lowerFrontState||'–')}${c.lowerFrontMetric!=null?` <small>ΔT ${fmtVal(c.lowerFrontMetric)}</small>`:''}</span>
    <span class="ff-f2 ${f2cls(c.upperFrontState)}">상부(D) ${esc(c.upperFrontState||'–')}${c.upperFrontMetric!=null?` <small>ΔT ${fmtVal(c.upperFrontMetric)}</small>`:''}</span>
  </div>` : '';

  // WP5 2·3단계: 조성 권장SP(base+trim) — LevelDriven
  const compSp = (c.streams||[]).filter(s=>s.recommendedSpComposition!=null).map(s=>{
    const tr = s.trim!=null && s.trim!==0 ? `${s.trim>=0?'+':''}${fmtVal(s.trim)}` : '';
    return `${esc(s.key)}: ${fmtVal(s.compositionBase)}${tr} = <b>${fmtVal(s.recommendedSpComposition)}</b>`;
  }).join(' · ');
  const comp = compSp ? `<div class="ff-comp">조성 권장SP(base+편차): ${compSp} <small>(advisory · 게인·부호 현장 calibrate)</small></div>` : '';

  const armWait = (c.mode === 'Normal' && c.modeReason && c.modeReason.indexOf('ARM 대기') >= 0);
  const modeBadge =
      c.mode === 'Recovering' ? '<span class="ff-mode ff-mode-rec">전환류 복귀중 ●</span>'
    : c.mode === 'Returning'  ? '<span class="ff-mode ff-mode-ret">복귀 램프 ●</span>'
    : armWait                 ? '<span class="ff-mode ff-mode-arm">전환류 권장 ⚠</span>'
    : '';
  const recoveryCtl =
      armWait                                   ? `<button class="btn sm danger" onclick="ffArm(${c.columnId})">전환류 ARM</button>`
    : (c.mode==='Recovering'||c.mode==='Returning') ? `<button class="btn sm" onclick="ffCancelRecovery(${c.columnId})">취소(정상복귀)</button>`
    : '';
  const modeLine = (modeBadge || c.modeReason)
    ? `<div class="ff-modeline">${modeBadge} <small>${esc(c.modeReason||'')}</small> ${recoveryCtl}</div>` : '';
  const writeBadge = c.autoWriteActive ? '<span class="ff-write-badge">자동 SP 쓰기</span>' : '';
  const wgBlocked = c.writeGuardBlockedSp != null
    ? `<div class="ff-wg-blocked">쓰기 차단: ${esc(c.writeGuardReason)} (SP <b>${fmtVal(c.writeGuardBlockedSp)}</b>)</div>`
    : '';
  return `
  <div class="ff-col-card ${c.enabled?'':'ff-disabled'}">
    <div class="ff-col-head"><b>${esc(c.columnName)}</b>
      <span class="ff-feed">FEED ${fmtVal(c.feedFiltered)}</span>
      ${writeBadge}
      <span class="ff-time">${fmtTs(c.computedAt)}</span></div>
    ${modeLine}
    ${banner}
    ${wgBlocked}
    <table class="ff-tbl"><thead><tr>
      <th>스트림</th><th>태그</th><th>역할</th><th>PV</th><th>권장 SP</th><th>Δ</th><th>추세</th><th>신뢰</th>
    </tr></thead><tbody>${rows}</tbody></table>
    <div class="ff-mb">${esc(mb)}</div>
    ${temps}
    ${theta}
    ${front}
    ${tpBadge}
    ${front2}
    ${comp}
    <div class="ff-note">LevelDriven(D·B)은 레벨 제어(LIC)가 SP를 결정. 권장값은 참고 — 인가는 운전원.</div>
  </div>`;
}

// ── 설정 에디터 ──────────────────────────────────────────────────
function ffMsg(m, err) { const e=document.getElementById('ff-cfg-msg'); e.textContent=m; e.className='ff-msg'+(err?' err':''); }

async function ffLoadConfig() {
  const data = await ffApi('GET', '/api/ff/config');
  const host = document.getElementById('ff-cfg-list');
  host.innerHTML = (data.columns||[]).map(ffCfgRow).join('') || '<div class="ff-empty">설정 없음</div>';
  host.querySelectorAll('[data-edit]').forEach(b => b.onclick = () =>
    ffEditColumn(data.columns.find(c => c.id == b.dataset.edit)));
  host.querySelectorAll('[data-del]').forEach(b => b.onclick = () => ffDelete(b.dataset.del));
}
function ffCfgRow(c) {
  return `<div class="ff-cfg-item"><b>${esc(c.name)}</b> (id ${c.id}) — feed ${esc(c.feedTag)},
    스트림 ${c.streams.length}개, ${c.enabled?'활성':'비활성'}
    <button class="btn sm" data-edit="${c.id}">편집</button>
    <button class="btn sm danger" data-del="${c.id}">삭제</button></div>`;
}
async function ffDelete(id) {
  if (!confirm(`컬럼 ${id} 삭제?`)) return;
  try { await ffApi('DELETE', `/api/ff/config/${id}`); await ffLoadConfig(); ffMsg('삭제됨'); }
  catch (e) { ffMsg('삭제 실패', true); }
}

// ── 폼 에디터 모달 ──────────────────────────────────────────────
const FF_ROLES = ['Commanded','LevelDriven','Monitor'];
const FF_GRADES = ['A','B','C'];
const FF_KEY_DESC = { P:'주생성물(Feedforward 계산)', R:'환류(R_f × P_sp)', D:'유출액(LevelDriven 기대치)', B:'탑저(LevelDriven 기대치)' };

function ffEditColumn(c) {
  const existing = document.getElementById('ff-modal');
  if (existing) existing.remove();
  const isNew = !c;

  const modal = document.createElement('div');
  modal.id = 'ff-modal';
  modal.className = 'ff-modal';

  const def = isNew
    ? { name:'', enabled:false, feedTag:'', pressureTag:'',
        scanSec:2, feedFilterTauSec:300, feedMoveThresholdPerMin:5,
        pressFilterTauSec:60, pressureBand:3, settleSec:1800, staleSec:120, productKey:'P',
        // WO-2 온도/PCT · WO-3 θ자동튜닝 · WO-4 바이어스
        tempTags:[], sensitiveTrayTag:'', dtdp:0, pRef:null, steamOpTag:'', thetaAutoTune:false, biasMaWindowSec:21600,
        // WO-6 전환류 복귀
        recoveryEnabled:false, recoveryAutoArm:false, imbalanceTriggerFrac:0.10, imbalanceTriggerSec:600,
        recoverySettleSec:1800, returnRampSec:600, feedRecoverySp:0, deltaPTag:'', deltaPFloodLimit:1e9, tempHighLimit:1e9,
        streams:[
          {key:'P',flowTag:'',role:'Commanded',levelTag:'',targetCoeff:0.95,thetaUpSec:60,thetaDnSec:60,tauSec:900,spMin:0,spMax:9999,rateUpPerMin:30,rateDnPerMin:60,refluxFromProduct:false,grade:'A',isReflux:false,recoverySp:0,spNodeId:''},
          {key:'R',flowTag:'',role:'Commanded',levelTag:'',targetCoeff:0.80,thetaUpSec:0,thetaDnSec:0,tauSec:0,spMin:0,spMax:9999,rateUpPerMin:30,rateDnPerMin:30,refluxFromProduct:true,grade:'A',isReflux:true,recoverySp:null,spNodeId:''},
          {key:'D',flowTag:'',role:'LevelDriven',levelTag:'lica-6113',targetCoeff:0.02,thetaUpSec:0,thetaDnSec:0,tauSec:0,spMin:0,spMax:9999,rateUpPerMin:0,rateDnPerMin:0,refluxFromProduct:false,grade:'B',isReflux:false,recoverySp:0,spNodeId:''},
          {key:'B',flowTag:'',role:'LevelDriven',levelTag:'li-6111',targetCoeff:0.03,thetaUpSec:0,thetaDnSec:0,tauSec:0,spMin:0,spMax:9999,rateUpPerMin:0,rateDnPerMin:0,refluxFromProduct:false,grade:'B',isReflux:false,recoverySp:0,spNodeId:''}
        ] }
    : { ...c, pressureTag: c.pressureTag||'',
        tempTags: c.tempTags||[], sensitiveTrayTag: c.sensitiveTrayTag||'', steamOpTag: c.steamOpTag||'', deltaPTag: c.deltaPTag||'' };

  const colHtml = `
    <div class="ff-modal-col">
      <label>컬럼명 <input class="inp" id="ff-f-name" value="${esc(def.name)}"></label>
      <label><input type="checkbox" id="ff-f-enabled" ${def.enabled?'checked':''}> 활성</label>
      <label><input type="checkbox" id="ff-f-advisoryOnly" ${def.advisoryOnly!==false?'checked':''}> AdvisoryOnly(체크=권장만, 쓰기 안 함)</label>
      <label>Feed 태그 <input class="inp" id="ff-f-feedTag" value="${esc(def.feedTag)}"></label>
      <label>압력 태그 <input class="inp" id="ff-f-pressureTag" value="${esc(def.pressureTag)}"></label>
      <label>Product Key <input class="inp" id="ff-f-productKey" value="${esc(def.productKey)}"></label>
    </div>
    <div class="ff-modal-col">
      <label><span class="ff-desc">Scan(초): 계산 주기 — 빠를수록 민감하나 부하 증가</span><input class="inp" type="number" id="ff-f-scanSec" value="${def.scanSec}"></label>
      <label><span class="ff-desc">Feed 필터 τ(초): 원료투입량 필터 — 잦은 변화 안정화로 헌팅 방지</span><input class="inp" type="number" id="ff-f-feedFilterTauSec" value="${def.feedFilterTauSec}"></label>
      <label><span class="ff-desc">Feed 변동 임계(/분): 원료 투입량 분당 변화율 — 초과 시 과도상태 진입</span><input class="inp" type="number" id="ff-f-feedMoveThresholdPerMin" value="${def.feedMoveThresholdPerMin}"></label>
      <label><span class="ff-desc">압력 필터 τ(초): 진공압 필터 — 잦은 변화 안정화로 헌팅 방지</span><input class="inp" type="number" id="ff-f-pressFilterTauSec" value="${def.pressFilterTauSec}"></label>
      <label><span class="ff-desc">Pressure Band: 진공 설정값과 현재값 상하 변동폭 판정 기준</span><input class="inp" type="number" id="ff-f-pressureBand" value="${def.pressureBand}"></label>
      <label><span class="ff-desc">Settle(초): 안정화 판단 기준 시간 — 이 시간 동안 안정 시 과도상태 해제</span><input class="inp" type="number" id="ff-f-settleSec" value="${def.settleSec}"></label>
      <label><span class="ff-desc">Stale(초): 데이터 유효시간 — 마지막 갱신 후 이 시간 초과 시 사용 안 함</span><input class="inp" type="number" id="ff-f-staleSec" value="${def.staleSec}"></label>
    </div>
    <div class="ff-modal-col">
      <div class="ff-modal-subhd">온도 프로파일 / θ 자동튜닝 <small>(WO-2·3·4)</small></div>
      <label><span class="ff-desc">온도 태그(콤마구분, 상→하): 프로파일 PCT 모니터 대상. 비우면 온도기능 off</span><input class="inp" id="ff-f-tempTags" value="${esc((def.tempTags||[]).join(','))}"></label>
      <label><span class="ff-desc">감도트레이 태그: 프론트(sweet-spot) 위치 지표. 비우면 상-하 차온 사용</span><input class="inp" id="ff-f-sensitiveTrayTag" value="${esc(def.sensitiveTrayTag||'')}"></label>
      <label><span class="ff-desc">dT/dP(°C/압력): 압력보정온도(PCT) 계수. 0이면 생온도 사용</span><input class="inp" type="number" step="any" id="ff-f-dtdp" value="${def.dtdp}"></label>
      <label><span class="ff-desc">P_ref(압력 기준점): 비우면 최초 정상압력으로 자동 시드</span><input class="inp" type="number" step="any" id="ff-f-pRef" value="${def.pRef==null?'':def.pRef}"></label>
      <label><span class="ff-desc">스팀 OP 태그(예 tica-6111a.op): θ 추정 폐루프 오염 제거용</span><input class="inp" id="ff-f-steamOpTag" value="${esc(def.steamOpTag||'')}"></label>
      <label><input type="checkbox" id="ff-f-thetaAutoTune" ${def.thetaAutoTune?'checked':''}> θ 자동튜닝(제안만, 자동반영 없음)</label>
      <label><span class="ff-desc">바이어스 MA 창(초): K_obs·V_loss 장기평균 창(기본 6h=21600)</span><input class="inp" type="number" id="ff-f-biasMaWindowSec" value="${def.biasMaWindowSec}"></label>
    </div>
    <div class="ff-modal-col ff-recovery-col">
      <div class="ff-modal-subhd">전환류 평형복귀 (WO-6) ★</div>
      <label><input type="checkbox" id="ff-f-recoveryEnabled" ${def.recoveryEnabled?'checked':''}> 전환류 복귀 기능 사용</label>
      <label><input type="checkbox" id="ff-f-recoveryAutoArm" ${def.recoveryAutoArm?'checked':''}> 자동 무장(체크 해제 시 운전원 ARM 필요)</label>
      <label><span class="ff-desc">불균형 트리거 비율: |V_loss(MA)|/Feed 가 이 값 초과 지속 시 전환류 권장 (0.10 = 10%)</span><input class="inp ff-trig" type="number" step="any" id="ff-f-imbalanceTriggerFrac" value="${def.imbalanceTriggerFrac}"></label>
      <label><span class="ff-desc">트리거 지속(초): 불균형이 이 시간 연속 지속돼야 발동(오발동 방지, 기본 600=10분)</span><input class="inp ff-trig" type="number" id="ff-f-imbalanceTriggerSec" value="${def.imbalanceTriggerSec}"></label>
      <label><span class="ff-desc">평형 대기(초): 전환류 중 평형 회복 연속 만족 시간(기본 1800=30분)</span><input class="inp" type="number" id="ff-f-recoverySettleSec" value="${def.recoverySettleSec}"></label>
      <label><span class="ff-desc">복귀 램프(초): 정상 복귀 시 드로우/피드 점진 복원 시간(기본 600)</span><input class="inp" type="number" id="ff-f-returnRampSec" value="${def.returnRampSec}"></label>
      <label><span class="ff-desc">전환류 중 Feed 권장값: 보통 0(차단)</span><input class="inp" type="number" step="any" id="ff-f-feedRecoverySp" value="${def.feedRecoverySp}"></label>
      <label><span class="ff-desc">차압(ΔP) 태그: 플러딩 트리거용(선택). 비우면 미사용</span><input class="inp" id="ff-f-deltaPTag" value="${esc(def.deltaPTag||'')}"></label>
      <label><span class="ff-desc">ΔP 플러딩 상한: 초과 지속 시 전환류 트리거. 미사용 시 매우 큰 값</span><input class="inp" type="number" step="any" id="ff-f-deltaPFloodLimit" value="${def.deltaPFloodLimit}"></label>
      <label><span class="ff-desc">온도 HIGH LIMIT(raw): 온도태그 중 최고값이 초과 시 전환류 트리거(단독). 미사용 시 매우 큰 값(1e9)</span><input class="inp" type="number" step="any" id="ff-f-tempHighLimit" value="${def.tempHighLimit==null?1e9:def.tempHighLimit}"></label>
    </div>`;

  modal.innerHTML = `
    <div class="ff-modal-overlay"></div>
    <div class="ff-modal-box">
      <div class="ff-modal-hd">${isNew?'새 컬럼':'컬럼 편집'} <span class="ff-modal-id">${isNew?'':'(id '+c.id+')'}</span></div>
      <div class="ff-modal-body">
        <div class="ff-modal-grid">${colHtml}</div>
        <div class="ff-modal-sec">
          <div class="ff-modal-sec-hd">스트림
            <span class="ff-key-legend">P=주생성물  R=환류(P rec)  D=유출액  B=탑저</span>
            <button class="btn sm" id="ff-stream-add">+ 추가</button>
          </div>
          <table class="ff-tbl ff-stream-tbl">
            <thead><tr>
              <th>Key</th><th>Flow 태그</th><th>역할</th><th>레벨태그</th><th>K</th><th>θ_up</th><th>θ_dn</th><th>τ</th>
              <th>SP_min</th><th>SP_max</th><th>Rate_up</th><th>Rate_dn</th><th>환류</th><th title="전환류 시 전량환류 대상">전환류R</th><th title="전환류 시 이 스트림 권장값(비우면 0)">복귀SP</th><th title="OPC UA SP NodeId (예: ns=3;s=ficq-6113.sp)">SP NodeId</th><th>신뢰</th><th></th>
            </tr></thead>
            <tbody id="ff-stream-body">
              ${def.streams.map((s,i) => ffStreamRow(s,i)).join('')}
            </tbody>
          </table>
        </div>
      </div>
      <div class="ff-modal-ft">
        <span id="ff-modal-msg" class="ff-msg"></span>
        <button class="btn-b" id="ff-modal-cancel">취소</button>
        <button class="btn-a" id="ff-modal-save">${isNew?'생성':'저장'}</button>
      </div>
    </div>`;

  document.body.appendChild(modal);

  document.getElementById('ff-stream-add').onclick = () => {
    const tb = document.getElementById('ff-stream-body');
    const i = tb.children.length;
    tb.insertAdjacentHTML('beforeend', ffStreamRow({
      key:'',flowTag:'',role:'Commanded',levelTag:'',targetCoeff:0,thetaUpSec:0,thetaDnSec:0,
      tauSec:0,spMin:0,spMax:1e9,rateUpPerMin:1e9,rateDnPerMin:1e9,
      refluxFromProduct:false,grade:'A',isReflux:false,recoverySp:null,spNodeId:''
    }, i));
    ffWireStreamRow(tb.lastElementChild);
  };

  document.querySelectorAll('#ff-stream-body tr').forEach(ffWireStreamRow);
  document.getElementById('ff-modal-cancel').onclick = () => modal.remove();
  document.getElementById('ff-modal-save').onclick = () => ffSaveForm(c?.id);
  document.querySelector('.ff-modal-overlay').onclick = () => modal.remove();
}

function ffStreamRow(s, i) {
  const roleOpts = FF_ROLES.map(r => `<option ${r===s.role?'selected':''}>${r}</option>`).join('');
  const gradeOpts = FF_GRADES.map(g => `<option ${g===s.grade?'selected':''}>${g}</option>`).join('');
  const desc = FF_KEY_DESC[s.key] || '';
  const lvlTagHtml = s.role==='LevelDriven'
    ? `<input class="inp ff-si ff-lvl-tag" value="${esc(s.levelTag||'')}" data-idx="${i}" data-f="levelTag" placeholder="레벨태그">`
    : `<input type="hidden" data-idx="${i}" data-f="levelTag" value="">`;
  return `<tr>
    <td><input class="inp ff-si" value="${esc(s.key)}" title="${esc(desc)}" data-idx="${i}" data-f="key"></td>
    <td><input class="inp ff-si" value="${esc(s.flowTag)}" data-idx="${i}" data-f="flowTag"></td>
    <td><select class="inp ff-si" data-idx="${i}" data-f="role">${roleOpts}</select></td>
    <td>${lvlTagHtml}</td>
    <td><input class="inp ff-si" type="number" step="any" value="${s.targetCoeff}" data-idx="${i}" data-f="targetCoeff"></td>
    <td><input class="inp ff-si" type="number" value="${s.thetaUpSec}" data-idx="${i}" data-f="thetaUpSec"></td>
    <td><input class="inp ff-si" type="number" value="${s.thetaDnSec}" data-idx="${i}" data-f="thetaDnSec"></td>
    <td><input class="inp ff-si" type="number" value="${s.tauSec}" data-idx="${i}" data-f="tauSec"></td>
    <td><input class="inp ff-si" type="number" step="any" value="${s.spMin}" data-idx="${i}" data-f="spMin"></td>
    <td><input class="inp ff-si" type="number" step="any" value="${s.spMax}" data-idx="${i}" data-f="spMax"></td>
    <td><input class="inp ff-si" type="number" step="any" value="${s.rateUpPerMin}" data-idx="${i}" data-f="rateUpPerMin"></td>
    <td><input class="inp ff-si" type="number" step="any" value="${s.rateDnPerMin}" data-idx="${i}" data-f="rateDnPerMin"></td>
    <td><input type="checkbox" ${s.refluxFromProduct?'checked':''} data-idx="${i}" data-f="refluxFromProduct"></td>
    <td><input type="checkbox" ${s.isReflux?'checked':''} data-idx="${i}" data-f="isReflux"></td>
    <td><input class="inp ff-si" type="number" step="any" value="${s.recoverySp==null?'':s.recoverySp}" data-idx="${i}" data-f="recoverySp" placeholder="0"></td>
    <td><input class="inp ff-si" value="${esc(s.spNodeId||'')}" data-idx="${i}" data-f="spNodeId" placeholder="예: ns=3;s=ficq-6113.sp"></td>
    <td><select class="inp ff-si" data-idx="${i}" data-f="grade">${gradeOpts}</select></td>
    <td><button class="btn sm danger ff-stream-del" data-idx="${i}">✕</button></td>
  </tr>`;
}

function ffWireStreamRow(tr) {
  const del = tr.querySelector('.ff-stream-del');
  if (del) del.onclick = () => { tr.remove(); };
}

function ffSaveForm(existingId) {
  const g = id => document.getElementById(id);
  const body = {
    id: existingId || 0,
    name: g('ff-f-name').value,
    enabled: g('ff-f-enabled').checked,
    feedTag: g('ff-f-feedTag').value,
    pressureTag: g('ff-f-pressureTag').value || null,
    scanSec: +g('ff-f-scanSec').value,
    feedFilterTauSec: +g('ff-f-feedFilterTauSec').value,
    feedMoveThresholdPerMin: +g('ff-f-feedMoveThresholdPerMin').value,
    pressFilterTauSec: +g('ff-f-pressFilterTauSec').value,
    pressureBand: +g('ff-f-pressureBand').value,
    settleSec: +g('ff-f-settleSec').value,
    staleSec: +g('ff-f-staleSec').value,
    productKey: g('ff-f-productKey').value,
    advisoryOnly: g('ff-f-advisoryOnly').checked,
    // WO-2/3/4
    tempTags: g('ff-f-tempTags').value.split(',').map(s=>s.trim()).filter(Boolean),
    sensitiveTrayTag: g('ff-f-sensitiveTrayTag').value || null,
    dtdp: +g('ff-f-dtdp').value,
    pRef: g('ff-f-pRef').value === '' ? undefined : +g('ff-f-pRef').value,
    steamOpTag: g('ff-f-steamOpTag').value || null,
    thetaAutoTune: g('ff-f-thetaAutoTune').checked,
    biasMaWindowSec: +g('ff-f-biasMaWindowSec').value,
    // WO-6
    recoveryEnabled: g('ff-f-recoveryEnabled').checked,
    recoveryAutoArm: g('ff-f-recoveryAutoArm').checked,
    imbalanceTriggerFrac: +g('ff-f-imbalanceTriggerFrac').value,
    imbalanceTriggerSec: +g('ff-f-imbalanceTriggerSec').value,
    recoverySettleSec: +g('ff-f-recoverySettleSec').value,
    returnRampSec: +g('ff-f-returnRampSec').value,
    feedRecoverySp: +g('ff-f-feedRecoverySp').value,
    deltaPTag: g('ff-f-deltaPTag').value || null,
    deltaPFloodLimit: +g('ff-f-deltaPFloodLimit').value,
    tempHighLimit: +g('ff-f-tempHighLimit').value,
    streams: Array.from(document.querySelectorAll('#ff-stream-body tr')).map(tr => {
      const v = (sel, f) => {
        const el = tr.querySelector(`[data-f="${f}"]`);
        if (!el) return '';
        if (el.type === 'checkbox') return el.checked;
        if (el.tagName === 'SELECT') return el.value;
        return el.value;
      };
      return {
        key: v(null,'key'), flowTag: v(null,'flowTag'), role: v(null,'role'),
        levelTag: v(null,'levelTag') || null,
        targetCoeff: +v(null,'targetCoeff'), thetaUpSec: +v(null,'thetaUpSec'),
        thetaDnSec: +v(null,'thetaDnSec'), tauSec: +v(null,'tauSec'),
        spMin: +v(null,'spMin'), spMax: +v(null,'spMax'),
        rateUpPerMin: +v(null,'rateUpPerMin'), rateDnPerMin: +v(null,'rateDnPerMin'),
        refluxFromProduct: v(null,'refluxFromProduct'), grade: v(null,'grade'),
        isReflux: v(null,'isReflux'),
        recoverySp: (() => { const x = v(null,'recoverySp'); return x === '' ? undefined : +x; })(),
        spNodeId: v(null,'spNodeId') || null
      };
    })
  };
  if (existingId) body.id = existingId;

  const msg = g('ff-modal-msg');
  ffApi('POST', '/api/ff/config', body)
    .then(() => { document.getElementById('ff-modal').remove(); ffLoadConfig(); ffMsg('저장됨'); })
    .catch(e => { msg.textContent = '저장 실패: '+e.message; msg.className = 'ff-msg err'; });
}