diff --git a/app/static/public/css/imagine_workbench.css b/app/static/public/css/imagine_workbench.css
index b2f4d4d..1830c8a 100644
--- a/app/static/public/css/imagine_workbench.css
+++ b/app/static/public/css/imagine_workbench.css
@@ -224,10 +224,22 @@ body {
   width: 100%;
   display: block;
   box-sizing: border-box;
+  min-height: 150px;
+  padding-left: 112px;
   padding-right: 116px;
   padding-bottom: 44px;
 }
 
+.field .prompt-enhance-wrap > .inline-submit-btn {
+  position: absolute;
+  left: 8px;
+  bottom: 8px;
+  z-index: 3;
+  height: 30px;
+  min-width: 88px;
+  padding: 0 10px;
+}
+
 .field .prompt-enhance-wrap > .prompt-enhance-btn {
   right: 8px;
   bottom: 8px;
@@ -245,6 +257,10 @@ body {
   gap: 8px;
 }
 
+.action-row.action-row-inline {
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+}
+
 .edit-progress-wrap {
   margin-top: 10px;
   width: 100%;
diff --git a/app/static/public/js/imagine_workbench.js b/app/static/public/js/imagine_workbench.js
new file mode 100644
index 0000000..b20ea81
--- /dev/null
+++ b/app/static/public/js/imagine_workbench.js
@@ -0,0 +1,978 @@
+(() => {
+  const seedImageInput = document.getElementById('seedImageInput');
+  const selectSeedBtn = document.getElementById('selectSeedBtn');
+  const seedFileName = document.getElementById('seedFileName');
+  const parentPostInput = document.getElementById('parentPostInput');
+  const applyParentBtn = document.getElementById('applyParentBtn');
+  const previewShell = document.getElementById('previewShell');
+  const currentImage = document.getElementById('currentImage');
+  const previewEmpty = document.getElementById('previewEmpty');
+  const currentParentId = document.getElementById('currentParentId');
+  const currentMode = document.getElementById('currentMode');
+  const editPromptInput = document.getElementById('editPromptInput');
+  const submitEditBtn = document.getElementById('submitEditBtn');
+  const resetCycleBtn = document.getElementById('resetCycleBtn');
+  const clearHistoryBtn = document.getElementById('clearHistoryBtn');
+  const editStatusText = document.getElementById('editStatusText');
+  const historyCount = document.getElementById('historyCount');
+  const historyEmpty = document.getElementById('historyEmpty');
+  const historyList = document.getElementById('historyList');
+  const editProgressWrap = document.getElementById('editProgressWrap');
+  const editProgressBar = document.getElementById('editProgressBar');
+  const editProgressText = document.getElementById('editProgressText');
+
+  const state = {
+    editing: false,
+    seedImageBase64: '',
+    seedFileName: '',
+    currentImageUrl: '',
+    currentParentPostId: '',
+    currentSourceImageUrl: '',
+    currentModeValue: 'upload',
+    history: [],
+    editRound: 0,
+  };
+  let editProgressTimer = null;
+  let editProgressHideTimer = null;
+  let editProgressValue = 0;
+  let dragCounter = 0;
+
+  function toast(message, type) {
+    if (typeof showToast === 'function') {
+      showToast(message, type);
+    }
+  }
+
+  function getParentMemoryApi() {
+    return window.ParentPostMemory || null;
+  }
+
+  function rememberParentPost(entry) {
+    const api = getParentMemoryApi();
+    if (!api || !entry) return;
+    try {
+      api.remember(entry);
+    } catch (e) {
+      // ignore
+    }
+  }
+
+  async function copyText(value) {
+    const text = String(value || '').trim();
+    if (!text) return false;
+    if (navigator.clipboard && window.isSecureContext) {
+      await navigator.clipboard.writeText(text);
+      return true;
+    }
+    const textarea = document.createElement('textarea');
+    textarea.value = text;
+    textarea.setAttribute('readonly', 'readonly');
+    textarea.style.position = 'fixed';
+    textarea.style.opacity = '0';
+    textarea.style.pointerEvents = 'none';
+    document.body.appendChild(textarea);
+    textarea.focus();
+    textarea.select();
+    const copied = document.execCommand('copy');
+    document.body.removeChild(textarea);
+    return copied;
+  }
+
+  function shortId(value) {
+    const raw = String(value || '').trim();
+    if (!raw) return '-';
+    if (raw.length <= 14) return raw;
+    return `${raw.slice(0, 7)}...${raw.slice(-7)}`;
+  }
+
+  function formatTime(ts) {
+    try {
+      return new Date(ts).toLocaleString('zh-CN', {
+        hour12: false,
+      });
+    } catch (e) {
+      return '-';
+    }
+  }
+
+  function maskPrompt(prompt) {
+    const raw = String(prompt || '').trim();
+    if (!raw) return '-';
+    return raw;
+  }
+
+  function buildImaginePublicUrl(parentPostId) {
+    return `https://imagine-public.x.ai/imagine-public/images/${parentPostId}.jpg`;
+  }
+
+  function normalizeHttpSourceUrl(value) {
+    const raw = String(value || '').trim();
+    if (!raw) return '';
+    if (raw.startsWith('data:')) return '';
+    if (raw.startsWith('http://') || raw.startsWith('https://')) {
+      return raw;
+    }
+    if (raw.startsWith('/')) {
+      return `${window.location.origin}${raw}`;
+    }
+    return '';
+  }
+
+  function pickSourceImageUrl(hit, parentPostId, fallbackValue = '') {
+    const candidates = [
+      hit && hit.current_source_image_url,
+      hit && hit.currentSourceImageUrl,
+      hit && hit.source_image_url,
+      hit && hit.sourceImageUrl,
+      hit && hit.image_url,
+      hit && hit.imageUrl,
+      fallbackValue,
+    ];
+    for (const candidate of candidates) {
+      const normalized = normalizeHttpSourceUrl(candidate);
+      if (normalized) return normalized;
+    }
+    return parentPostId ? buildImaginePublicUrl(parentPostId) : '';
+  }
+
+  function pickPreviewUrl(hit, parentPostId) {
+    const candidates = [
+      hit && hit.imageUrl,
+      hit && hit.image_url,
+      hit && hit.url,
+      hit && hit.sourceImageUrl,
+      hit && hit.source_image_url,
+    ];
+    for (const candidate of candidates) {
+      const raw = String(candidate || '').trim();
+      if (raw) return raw;
+    }
+    const source = pickSourceImageUrl(hit, parentPostId);
+    return source || (parentPostId ? buildImaginePublicUrl(parentPostId) : '');
+  }
+
+  function extractParentPostId(value) {
+    const raw = String(value || '').trim();
+    if (!raw) return '';
+    const direct = raw.match(/^[0-9a-fA-F-]{32,36}$/);
+    if (direct) return direct[0];
+    const generated = raw.match(/\/generated\/([0-9a-fA-F-]{32,36})(?:\/|$)/);
+    if (generated) return generated[1];
+    const imaginePublic = raw.match(/\/imagine-public\/images\/([0-9a-fA-F-]{32,36})(?:\.jpg|\/|$)/);
+    if (imaginePublic) return imaginePublic[1];
+    const imagePath = raw.match(/\/images\/([0-9a-fA-F-]{32,36})(?:\.jpg|\/|$)/);
+    if (imagePath) return imagePath[1];
+    const all = raw.match(/([0-9a-fA-F-]{32,36})/g);
+    return all && all.length ? all[all.length - 1] : '';
+  }
+
+  function resolveParentMemoryByText(text) {
+    const input = String(text || '').trim();
+    if (!input) return null;
+    const api = getParentMemoryApi();
+    if (api && typeof api.resolveByText === 'function') {
+      try {
+        const hit = api.resolveByText(input);
+        if (hit && hit.parentPostId) {
+          const parentPostId = String(hit.parentPostId || '').trim();
+          return {
+            ...hit,
+            parentPostId,
+          };
+        }
+        return hit;
+      } catch (e) {
+        // ignore
+      }
+    }
+    const parentPostId = extractParentPostId(input);
+    if (!parentPostId) return null;
+    return {
+      parentPostId,
+      sourceImageUrl: buildImaginePublicUrl(parentPostId),
+      imageUrl: buildImaginePublicUrl(parentPostId),
+      origin: 'fallback',
+    };
+  }
+
+  function applyParentPostFromText(text, options = {}) {
+    const silent = Boolean(options.silent);
+    const hit = resolveParentMemoryByText(text);
+    if (!hit || !hit.parentPostId) {
+      if (!silent) {
+        toast('未识别到有效 parentPostId', 'warning');
+      }
+      return false;
+    }
+    const parentPostId = String(hit.parentPostId || '').trim();
+    const sourceImageUrl = pickSourceImageUrl(hit, parentPostId);
+    const previewUrl = pickPreviewUrl(hit, parentPostId);
+
+    state.currentParentPostId = parentPostId;
+    state.currentSourceImageUrl = sourceImageUrl;
+    state.currentModeValue = 'parent_post';
+    setPreview(previewUrl);
+    updateMeta();
+    setStatus('done', `已加载 parentPostId：${shortId(parentPostId)}`);
+    if (parentPostInput) {
+      parentPostInput.value = parentPostId;
+    }
+    rememberParentPost({
+      parentPostId,
+      sourceImageUrl,
+      imageUrl: previewUrl,
+      origin: 'workbench_paste_apply',
+    });
+    if (!silent) {
+      toast('已载入 parentPostId，可直接继续编辑', 'success');
+    }
+    return true;
+  }
+
+  function setStatus(stateName, text) {
+    if (!editStatusText) return;
+    editStatusText.textContent = text;
+    editStatusText.classList.remove('running', 'done', 'error');
+    if (stateName) {
+      editStatusText.classList.add(stateName);
+    }
+  }
+
+  function clearEditProgressTimer() {
+    if (editProgressTimer) {
+      clearInterval(editProgressTimer);
+      editProgressTimer = null;
+    }
+    if (editProgressHideTimer) {
+      clearTimeout(editProgressHideTimer);
+      editProgressHideTimer = null;
+    }
+  }
+
+  function setEditProgress(value, text) {
+    const safe = Math.max(0, Math.min(100, Math.round(value || 0)));
+    editProgressValue = safe;
+    if (editProgressBar) {
+      editProgressBar.style.width = `${safe}%`;
+    }
+    if (editProgressText) {
+      editProgressText.textContent = text || `编辑中 ${safe}%`;
+    }
+  }
+
+  function showEditProgress() {
+    if (editProgressWrap) {
+      editProgressWrap.classList.add('active');
+      editProgressWrap.classList.remove('is-success', 'is-error');
+    }
+    if (editProgressText) {
+      editProgressText.classList.add('active');
+    }
+    setEditProgress(4, '编辑中 4%');
+  }
+
+  function hideEditProgress() {
+    clearEditProgressTimer();
+    if (editProgressWrap) {
+      editProgressWrap.classList.remove('active', 'is-success', 'is-error');
+    }
+    if (editProgressText) {
+      editProgressText.classList.remove('active');
+      editProgressText.textContent = '编辑中 0%';
+    }
+    if (editProgressBar) {
+      editProgressBar.style.width = '0%';
+    }
+    editProgressValue = 0;
+  }
+
+  function startEditProgress() {
+    clearEditProgressTimer();
+    showEditProgress();
+  }
+
+  function finishEditProgress(success, text) {
+    clearEditProgressTimer();
+    if (!editProgressWrap) return;
+    editProgressWrap.classList.add('active');
+    editProgressWrap.classList.remove('is-success', 'is-error');
+    editProgressWrap.classList.add(success ? 'is-success' : 'is-error');
+    if (editProgressText) {
+      editProgressText.classList.add('active');
+    }
+    setEditProgress(100, text || (success ? '编辑完成 100%' : '编辑失败'));
+    editProgressHideTimer = setTimeout(() => {
+      hideEditProgress();
+      editProgressHideTimer = null;
+    }, 900);
+  }
+
+  async function readFileAsDataUrl(file) {
+    return await new Promise((resolve, reject) => {
+      const reader = new FileReader();
+      reader.onload = () => resolve(String(reader.result || ''));
+      reader.onerror = () => reject(new Error('读取文件失败'));
+      reader.readAsDataURL(file);
+    });
+  }
+
+  async function applySeedImageFile(file, source) {
+    if (!file) return;
+    if (state.editing) {
+      toast('编辑进行中，暂时不能替换首图', 'warning');
+      return;
+    }
+    const mimeType = String(file.type || '');
+    if (mimeType && !mimeType.startsWith('image/')) {
+      toast('仅支持图片文件', 'warning');
+      return;
+    }
+    const dataUrl = await readFileAsDataUrl(file);
+    if (!dataUrl.startsWith('data:image/')) {
+      throw new Error('图片格式不受支持');
+    }
+
+    state.seedImageBase64 = dataUrl;
+    state.seedFileName = file.name || source || '未命名图片';
+    clearHistory();
+    resetCycle(true);
+    setStatus('', '已载入首图，可开始编辑');
+    updateMeta();
+    toast(`${source || '图片'}已载入，链路已重置`, 'success');
+  }
+
+  function setDragActive(active) {
+    if (!previewShell) return;
+    previewShell.classList.toggle('dragover', Boolean(active));
+  }
+
+  function pickImageFileFromDataTransfer(dataTransfer) {
+    if (!dataTransfer) return null;
+    if (dataTransfer.files && dataTransfer.files.length) {
+      for (const file of dataTransfer.files) {
+        if (file && String(file.type || '').startsWith('image/')) {
+          return file;
+        }
+      }
+    }
+    if (dataTransfer.items && dataTransfer.items.length) {
+      for (const item of dataTransfer.items) {
+        if (!item) continue;
+        if (item.kind === 'file') {
+          const file = item.getAsFile ? item.getAsFile() : null;
+          if (file && String(file.type || '').startsWith('image/')) {
+            return file;
+          }
+        }
+      }
+    }
+    return null;
+  }
+
+  function hasFiles(dataTransfer) {
+    if (!dataTransfer) return false;
+    if (dataTransfer.files && dataTransfer.files.length > 0) return true;
+    const types = dataTransfer.types;
+    if (!types) return false;
+    return Array.from(types).includes('Files');
+  }
+
+  function updateMeta() {
+    if (currentParentId) {
+      currentParentId.textContent = state.currentParentPostId || '-';
+    }
+    if (currentMode) {
+      currentMode.textContent = state.currentModeValue || '-';
+    }
+    if (seedFileName) {
+      seedFileName.textContent = state.seedFileName || '未选择文件';
+    }
+  }
+
+  function setPreview(url) {
+    const displayUrl = String(url || '').trim();
+    state.currentImageUrl = displayUrl;
+    if (!currentImage || !previewEmpty) return;
+    if (!displayUrl) {
+      currentImage.src = '';
+      currentImage.classList.add('hidden');
+      previewEmpty.classList.remove('hidden');
+      return;
+    }
+    currentImage.src = displayUrl;
+    currentImage.classList.remove('hidden');
+    previewEmpty.classList.add('hidden');
+  }
+
+  function setEditing(loading) {
+    state.editing = Boolean(loading);
+    if (submitEditBtn) submitEditBtn.disabled = state.editing;
+    if (selectSeedBtn) selectSeedBtn.disabled = state.editing;
+    if (resetCycleBtn) resetCycleBtn.disabled = state.editing;
+    if (clearHistoryBtn) clearHistoryBtn.disabled = state.editing;
+    if (editPromptInput) editPromptInput.disabled = state.editing;
+
+    if (state.editing) {
+      setStatus('running', '编辑中...');
+      if (submitEditBtn) submitEditBtn.textContent = '编辑中...';
+    } else {
+      if (submitEditBtn) submitEditBtn.textContent = '执行编辑';
+    }
+  }
+
+  function setCurrentFromEntry(entry) {
+    if (!entry) return;
+    state.currentParentPostId = String(entry.parentPostId || '').trim();
+    state.currentSourceImageUrl = String(entry.sourceImageUrl || '').trim();
+    state.currentModeValue = String(entry.mode || '').trim() || 'parent_post';
+    if (parentPostInput) {
+      parentPostInput.value = state.currentParentPostId;
+    }
+    setPreview(entry.imageUrl || '');
+    rememberParentPost({
+      parentPostId: state.currentParentPostId,
+      sourceImageUrl: state.currentSourceImageUrl,
+      imageUrl: entry.imageUrl || '',
+      origin: 'workbench_history_apply',
+    });
+    updateMeta();
+    setStatus('done', `已切换到历史版本 #${entry.round}`);
+  }
+
+  function renderHistory() {
+    if (!historyList || !historyEmpty || !historyCount) return;
+    historyList.innerHTML = '';
+    historyCount.textContent = `${state.history.length} 条`;
+
+    if (!state.history.length) {
+      historyEmpty.classList.remove('hidden');
+      return;
+    }
+    historyEmpty.classList.add('hidden');
+
+    state.history.forEach((entry) => {
+      const item = document.createElement('div');
+      item.className = 'history-item';
+
+      const thumb = document.createElement('img');
+      thumb.className = 'history-thumb';
+      thumb.src = entry.imageUrl || '';
+      thumb.alt = `history-${entry.round}`;
+      thumb.loading = 'lazy';
+      thumb.decoding = 'async';
+
+      const main = document.createElement('div');
+      main.className = 'history-main';
+
+      const line1 = document.createElement('div');
+      line1.className = 'history-line';
+      line1.innerHTML = `<strong>#${entry.round}</strong> · ${formatTime(entry.createdAt)} · ${entry.elapsedMs}ms`;
+
+      const line2 = document.createElement('div');
+      line2.className = 'history-line';
+      line2.innerHTML = `mode=<strong>${entry.mode}</strong> · parentPostId=<strong>${shortId(entry.parentPostId)}</strong>`;
+
+      const prompt = document.createElement('div');
+      prompt.className = 'history-prompt';
+      prompt.textContent = maskPrompt(entry.prompt);
+
+      const actions = document.createElement('div');
+      actions.className = 'history-actions';
+
+      const applyBtn = document.createElement('button');
+      applyBtn.type = 'button';
+      applyBtn.className = 'geist-button-outline';
+      applyBtn.textContent = '设为当前';
+      applyBtn.addEventListener('click', () => {
+        setCurrentFromEntry(entry);
+      });
+
+      const copyBtn = document.createElement('button');
+      copyBtn.type = 'button';
+      copyBtn.className = 'geist-button-outline';
+      copyBtn.textContent = '复制ID';
+      copyBtn.addEventListener('click', async () => {
+        try {
+          if (!entry.parentPostId) {
+            toast('当前记录没有 parentPostId', 'warning');
+            return;
+          }
+          const copied = await copyText(entry.parentPostId);
+          if (!copied) {
+            throw new Error('copy_failed');
+          }
+          toast('已复制 parentPostId', 'success');
+        } catch (e) {
+          toast('复制失败', 'error');
+        }
+      });
+
+      actions.appendChild(applyBtn);
+      actions.appendChild(copyBtn);
+
+      main.appendChild(line1);
+      main.appendChild(line2);
+      main.appendChild(prompt);
+      main.appendChild(actions);
+
+      item.appendChild(thumb);
+      item.appendChild(main);
+      historyList.appendChild(item);
+    });
+  }
+
+  function resetCycle(keepSeedPreview = true) {
+    state.currentParentPostId = '';
+    state.currentSourceImageUrl = '';
+    state.currentModeValue = 'upload';
+    if (parentPostInput) {
+      parentPostInput.value = '';
+    }
+    updateMeta();
+
+    if (keepSeedPreview && state.seedImageBase64) {
+      setPreview(state.seedImageBase64);
+    } else {
+      setPreview('');
+    }
+    setStatus('', '未开始');
+  }
+
+  function clearHistory() {
+    state.history = [];
+    state.editRound = 0;
+    renderHistory();
+  }
+
+  async function parseErrorText(res) {
+    const text = await res.text();
+    if (!text) return `请求失败：HTTP ${res.status}`;
+    try {
+      const data = JSON.parse(text);
+      if (data && typeof data === 'object' && data.detail) {
+        return String(data.detail);
+      }
+    } catch (e) {
+      // ignore
+    }
+    return text;
+  }
+
+  async function requestWorkbenchEditStream(authHeader, body, onProgress) {
+    const payload = {
+      ...body,
+      stream: true,
+    };
+    const res = await fetch('/v1/public/imagine/workbench/edit', {
+      method: 'POST',
+      headers: {
+        ...buildAuthHeaders(authHeader),
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(payload),
+    });
+
+    if (!res.ok) {
+      throw new Error(await parseErrorText(res));
+    }
+
+    const contentType = String(res.headers.get('content-type') || '').toLowerCase();
+    if (!contentType.includes('text/event-stream')) {
+      return await res.json();
+    }
+
+    const reader = res.body && res.body.getReader ? res.body.getReader() : null;
+    if (!reader) {
+      throw new Error('stream_not_supported');
+    }
+
+    const decoder = new TextDecoder('utf-8');
+    let buffer = '';
+    let finalResult = null;
+    let finalError = '';
+
+    function handleChunk(chunkText) {
+      let eventName = 'message';
+      const dataLines = [];
+      const lines = String(chunkText || '').split('\n');
+      for (const lineRaw of lines) {
+        const line = lineRaw.trim();
+        if (!line) continue;
+        if (line.startsWith('event:')) {
+          eventName = line.slice(6).trim();
+          continue;
+        }
+        if (line.startsWith('data:')) {
+          dataLines.push(line.slice(5).trim());
+        }
+      }
+      if (!dataLines.length) return;
+      let eventPayload = null;
+      try {
+        eventPayload = JSON.parse(dataLines.join('\n'));
+      } catch (e) {
+        return;
+      }
+      if (eventName === 'progress') {
+        if (onProgress && typeof onProgress === 'function') {
+          onProgress(eventPayload || {});
+        }
+      } else if (eventName === 'result') {
+        finalResult = eventPayload || {};
+      } else if (eventName === 'error') {
+        finalError = String((eventPayload && eventPayload.message) || 'workbench_edit_failed');
+      }
+    }
+
+    while (true) {
+      const { done, value } = await reader.read();
+      if (done) break;
+      buffer += decoder.decode(value, { stream: true });
+      while (true) {
+        const idx = buffer.indexOf('\n\n');
+        if (idx < 0) break;
+        const block = buffer.slice(0, idx);
+        buffer = buffer.slice(idx + 2);
+        handleChunk(block);
+      }
+    }
+
+    if (buffer.trim()) {
+      handleChunk(buffer);
+      buffer = '';
+    }
+
+    if (finalError) {
+      throw new Error(finalError);
+    }
+    if (finalResult) {
+      return finalResult;
+    }
+    throw new Error('workbench_edit_stream_empty_result');
+  }
+
+  async function ensurePublicAuth() {
+    if (typeof ensurePublicKey !== 'function') {
+      throw new Error('鉴权脚本未加载');
+    }
+    const authHeader = await ensurePublicKey();
+    if (authHeader === null) {
+      throw new Error('请先登录公开页面');
+    }
+    return authHeader;
+  }
+
+  async function runEdit() {
+    if (state.editing) return;
+
+    const prompt = String(editPromptInput ? editPromptInput.value : '').trim();
+    if (!prompt) {
+      toast('请输入编辑提示词', 'warning');
+      return;
+    }
+
+    if (!state.currentParentPostId && !state.seedImageBase64) {
+      toast('请先上传首图', 'warning');
+      return;
+    }
+
+    let authHeader = '';
+    try {
+      authHeader = await ensurePublicAuth();
+    } catch (e) {
+      toast(String(e.message || e), 'error');
+      if (String(e.message || '').includes('登录')) {
+        window.location.href = '/login';
+      }
+      return;
+    }
+
+    const body = {
+      prompt,
+    };
+
+    if (state.currentParentPostId) {
+      body.parent_post_id = state.currentParentPostId;
+      if (state.currentSourceImageUrl) {
+        body.source_image_url = state.currentSourceImageUrl;
+      }
+    } else {
+      body.image_base64 = state.seedImageBase64;
+    }
+
+    setEditing(true);
+    startEditProgress();
+
+    try {
+      const payload = await requestWorkbenchEditStream(authHeader, body, (evt) => {
+        const next = Number(evt && evt.progress ? evt.progress : 0);
+        const message = String((evt && evt.message) || '').trim();
+        if (Number.isFinite(next) && next > 0) {
+          const safe = Math.max(editProgressValue, Math.min(99, next));
+          setEditProgress(safe, message ? `${message} · ${safe}%` : `编辑中 ${safe}%`);
+          setStatus('running', message || `编辑中 ${safe}%`);
+        } else if (message) {
+          setEditProgress(editProgressValue, message);
+          setStatus('running', message);
+        }
+      });
+      const imageUrl = String(payload?.data?.[0]?.url || '').trim();
+      if (!imageUrl) {
+        throw new Error('返回结果缺少图片 URL');
+      }
+
+      const previousParentPostId = state.currentParentPostId;
+      const generatedParent = String(
+        payload.current_parent_post_id
+        || payload.generated_parent_post_id
+        || payload.input_parent_post_id
+        || extractParentPostId(imageUrl)
+      ).trim();
+      const resolvedParentPostId = generatedParent || previousParentPostId;
+
+      const sourceImageUrl = pickSourceImageUrl(
+        {
+          current_source_image_url: payload.current_source_image_url,
+          source_image_url: payload.source_image_url,
+          imageUrl,
+        },
+        resolvedParentPostId,
+        state.currentSourceImageUrl
+      );
+
+      const mode = String(payload.mode || (state.currentParentPostId ? 'parent_post' : 'upload')).trim();
+      const elapsedMs = Number(payload.elapsed_ms || 0);
+
+      state.currentParentPostId = resolvedParentPostId;
+      state.currentSourceImageUrl = sourceImageUrl;
+      state.currentModeValue = mode || 'parent_post';
+      if (parentPostInput) {
+        parentPostInput.value = state.currentParentPostId || '';
+      }
+      setPreview(imageUrl);
+      updateMeta();
+
+      state.editRound += 1;
+      const entry = {
+        id: `${Date.now()}_${Math.random().toString(16).slice(2, 8)}`,
+        round: state.editRound,
+        prompt,
+        mode: state.currentModeValue,
+        imageUrl,
+        parentPostId: resolvedParentPostId,
+        sourceImageUrl,
+        elapsedMs: Number.isFinite(elapsedMs) ? Math.max(0, Math.round(elapsedMs)) : 0,
+        createdAt: Date.now(),
+      };
+      state.history.unshift(entry);
+      renderHistory();
+      rememberParentPost({
+        parentPostId: resolvedParentPostId,
+        sourceImageUrl,
+        imageUrl,
+        origin: 'workbench_edit',
+      });
+
+      finishEditProgress(true, '编辑完成 100%');
+      setStatus('done', `编辑完成 · round #${entry.round}`);
+      toast('编辑成功，已更新当前画面', 'success');
+    } catch (e) {
+      finishEditProgress(false, '编辑失败');
+      setStatus('error', '编辑失败');
+      toast(String(e.message || e), 'error');
+    } finally {
+      setEditing(false);
+    }
+  }
+
+  function bindEvents() {
+    if (selectSeedBtn && seedImageInput) {
+      selectSeedBtn.addEventListener('click', () => {
+        seedImageInput.click();
+      });
+
+      seedImageInput.addEventListener('change', async (event) => {
+        const file = event.target && event.target.files ? event.target.files[0] : null;
+        if (!file) return;
+
+        try {
+          await applySeedImageFile(file, '本地图片');
+        } catch (e) {
+          toast(String(e.message || e), 'error');
+        } finally {
+          seedImageInput.value = '';
+        }
+      });
+    }
+
+    if (submitEditBtn) {
+      submitEditBtn.addEventListener('click', runEdit);
+    }
+
+    if (applyParentBtn) {
+      applyParentBtn.addEventListener('click', () => {
+        applyParentPostFromText(parentPostInput ? parentPostInput.value : '');
+      });
+    }
+
+    if (parentPostInput) {
+      parentPostInput.addEventListener('keydown', (event) => {
+        if (event.key === 'Enter') {
+          event.preventDefault();
+          applyParentPostFromText(parentPostInput.value);
+        }
+      });
+      parentPostInput.addEventListener('input', () => {
+        const raw = parentPostInput.value.trim();
+        if (!raw) return;
+        applyParentPostFromText(raw, { silent: true });
+      });
+      parentPostInput.addEventListener('paste', (event) => {
+        const text = String(event.clipboardData ? event.clipboardData.getData('text') || '' : '').trim();
+        if (!text) return;
+        event.preventDefault();
+        parentPostInput.value = text;
+        applyParentPostFromText(text, { silent: true });
+      });
+    }
+
+    if (editPromptInput) {
+      editPromptInput.addEventListener('keydown', (event) => {
+        if ((event.ctrlKey || event.metaKey) && event.key === 'Enter') {
+          event.preventDefault();
+          runEdit();
+        }
+      });
+    }
+
+    if (resetCycleBtn) {
+      resetCycleBtn.addEventListener('click', () => {
+        resetCycle(true);
+        toast('已重置编辑链路', 'success');
+      });
+    }
+
+    if (clearHistoryBtn) {
+      clearHistoryBtn.addEventListener('click', () => {
+        clearHistory();
+        toast('历史记录已清空', 'success');
+      });
+    }
+
+    document.addEventListener('paste', async (event) => {
+      const dataTransfer = event.clipboardData;
+      const file = pickImageFileFromDataTransfer(dataTransfer);
+      if (file) {
+        event.preventDefault();
+        try {
+          await applySeedImageFile(file, '粘贴图片');
+        } catch (e) {
+          toast(String(e.message || e), 'error');
+        }
+        return;
+      }
+      const text = dataTransfer ? String(dataTransfer.getData('text') || '').trim() : '';
+      if (!text) return;
+      const target = event.target;
+      const isTypingInPrompt = target === editPromptInput;
+      const isTypingInParentInput = target === parentPostInput;
+      if (isTypingInPrompt) return;
+      if (!isTypingInParentInput && (target instanceof HTMLInputElement || target instanceof HTMLTextAreaElement)) {
+        return;
+      }
+      const ok = applyParentPostFromText(text, { silent: true });
+      if (ok) {
+        event.preventDefault();
+      }
+    });
+
+    if (previewShell) {
+      previewShell.addEventListener('dragenter', (event) => {
+        if (!hasFiles(event.dataTransfer)) return;
+        event.preventDefault();
+        dragCounter += 1;
+        setDragActive(true);
+      });
+
+      previewShell.addEventListener('dragover', (event) => {
+        if (!hasFiles(event.dataTransfer)) return;
+        event.preventDefault();
+        if (event.dataTransfer) {
+          event.dataTransfer.dropEffect = 'copy';
+        }
+        setDragActive(true);
+      });
+
+      previewShell.addEventListener('dragleave', (event) => {
+        if (!hasFiles(event.dataTransfer)) return;
+        event.preventDefault();
+        dragCounter = Math.max(0, dragCounter - 1);
+        if (dragCounter === 0) {
+          setDragActive(false);
+        }
+      });
+
+      previewShell.addEventListener('drop', async (event) => {
+        event.preventDefault();
+        dragCounter = 0;
+        setDragActive(false);
+        const file = pickImageFileFromDataTransfer(event.dataTransfer);
+        if (!file) {
+          toast('未检测到可用图片文件', 'warning');
+          return;
+        }
+        try {
+          await applySeedImageFile(file, '拖拽图片');
+        } catch (e) {
+          toast(String(e.message || e), 'error');
+        }
+      });
+    }
+
+    window.addEventListener('dragover', (event) => {
+      if (!hasFiles(event.dataTransfer)) return;
+      event.preventDefault();
+    });
+
+    window.addEventListener('drop', (event) => {
+      if (!hasFiles(event.dataTransfer)) return;
+      if (previewShell && previewShell.contains(event.target)) {
+        return;
+      }
+      event.preventDefault();
+      setDragActive(false);
+      dragCounter = 0;
+    });
+  }
+
+  function mountInlineSubmitButton() {
+    if (!editPromptInput || !submitEditBtn) return false;
+    const promptWrap = editPromptInput.closest('.prompt-enhance-wrap');
+    if (!promptWrap) return false;
+    if (!promptWrap.contains(submitEditBtn)) {
+      const actionRow = submitEditBtn.parentElement;
+      promptWrap.appendChild(submitEditBtn);
+      if (actionRow && actionRow.classList && actionRow.classList.contains('action-row')) {
+        actionRow.classList.add('action-row-inline');
+      }
+    }
+    submitEditBtn.classList.add('inline-submit-btn');
+    return true;
+  }
+
+  function ensureInlineSubmitButton(attempt = 0) {
+    if (mountInlineSubmitButton()) return;
+    if (attempt >= 20) return;
+    setTimeout(() => ensureInlineSubmitButton(attempt + 1), 50);
+  }
+
+  function init() {
+    ensureInlineSubmitButton();
+    bindEvents();
+    renderHistory();
+    resetCycle(false);
+    updateMeta();
+  }
+
+  init();
+})();