diff --git a/.gitea/workflows/creative-workspace.yml b/.gitea/workflows/creative-workspace.yml
index a5eb2aa..5529d33 100644
--- a/.gitea/workflows/creative-workspace.yml
+++ b/.gitea/workflows/creative-workspace.yml
@@ -7,6 +7,8 @@ on:
       - 'apps/waterfall-wiki/**'
       - '.gitea/workflows/**'
       - 'scripts/*studio*'
+      - 'compose.creative-review.yml'
+      - 'scripts/integration.sh'
 concurrency:
   group: creative-workspace-${{ gitea.event.pull_request.number }}
   cancel-in-progress: true
@@ -28,6 +30,7 @@ jobs:
           docker build --target runtime -t "creative-wiki-review:${{ gitea.sha }}" .
       - name: Verify isolated PostgreSQL, S3 and browser integration
         env:
+          STUDIO_REVIEW_IMAGE: creative-studio-review:${{ gitea.sha }}
           WATERFALL_WIKI_IMAGE: creative-wiki-review:${{ gitea.sha }}
           WATERFALL_WIKI_TEST_IMAGE: creative-wiki-tests:${{ gitea.sha }}
           GITEA_RUN_ID: ${{ gitea.run_id }}
diff --git a/apps/studio/Dockerfile b/apps/studio/Dockerfile
index c1e0eb4..e05abfa 100644
--- a/apps/studio/Dockerfile
+++ b/apps/studio/Dockerfile
@@ -11,6 +11,7 @@ COPY apps/studio/ .
 # Compare the two public parameter validators inside the isolated CI build.
 COPY apps/waterfall-wiki/src/lib/layout-parameters.ts /waterfall-wiki/src/lib/layout-parameters.ts
 COPY apps/waterfall-wiki/src/lib/series.ts /waterfall-wiki/src/lib/series.ts
+COPY apps/waterfall-wiki/src/lib/canvas-document.ts /waterfall-wiki/src/lib/canvas-document.ts
 RUN pnpm typecheck && pnpm test && pnpm build && pnpm test:smoke
 FROM node:24-bookworm-slim
 WORKDIR /app
diff --git a/apps/studio/scripts/infinite-canvas-smoke.cjs b/apps/studio/scripts/infinite-canvas-smoke.cjs
index 495a538..f78e547 100644
--- a/apps/studio/scripts/infinite-canvas-smoke.cjs
+++ b/apps/studio/scripts/infinite-canvas-smoke.cjs
@@ -1,91 +1,93 @@
-// Supply authorized browser state for the server. Local acceptance was explicitly authorized for this revision.
+// Isolated browser context against the designated deployed server only.
 const {chromium}=require('playwright-core');
 const assert=require('node:assert/strict');
 const fs=require('node:fs/promises');
 (async()=>{
- const base=process.env.BASE_URL;
- assert.ok(['http://8.211.154.134:18131','http://127.0.0.1:3024'].includes(base),'Use the designated server or the explicitly authorized local preview');
- const browser=await chromium.launch(process.env.CHROMIUM_PATH?{executablePath:process.env.CHROMIUM_PATH,headless:true}:{channel:'chrome',headless:true});
+ const base=process.env.BASE_URL||'http://8.211.154.134:18131';
+ assert.equal(base,'http://8.211.154.134:18131');
+ const browser=await chromium.launch(process.env.CHROMIUM_PATH?{executablePath:process.env.CHROMIUM_PATH,headless:true,args:['--no-sandbox','--disable-dev-shm-usage']}:{channel:'chrome',headless:true});
  try{
   const context=await browser.newContext({viewport:{width:1600,height:1100},storageState:process.env.STORAGE_STATE||undefined});
-  const page=await context.newPage(),errors=[];page.on('pageerror',e=>errors.push(e.message));
-  await page.goto(base+'/infinite_canvas');
-  assert.equal(new URL(page.url()).pathname,'/infinite_canvas','Login required; authenticate without weakening protection');
-  await page.getByRole('heading',{name:'无限画布 / Infinite canvas'}).waitFor();
-  await page.getByRole('button',{name:'从示例开始 ↗',exact:true}).click();
-  // A fresh context is used so this test cannot overwrite a human browser draft.
+  const page=await context.newPage(),errors=[];let choosers=0;
+  page.on('pageerror',e=>errors.push(e.message));page.on('filechooser',()=>choosers++);
   const snapshot=()=>page.evaluate(()=>JSON.parse(localStorage.getItem('studio.infinite-canvas.v1')));
   const node=id=>page.locator(`[data-node-id="${id}"]`);
+  const content=id=>node(id).locator('[data-node-content]');
+  const waitField=(id,key,value)=>page.waitForFunction(({id,key,value})=>JSON.parse(localStorage.getItem('studio.infinite-canvas.v1')).cards.find(n=>n.id===id)?.[key]===value,{id,key,value});
+  const composer=page.getByRole('region',{name:'节点编辑器'});
   const close=(a,b)=>assert.ok(Math.abs(a-b)<2,`${a} ≈ ${b}`);
-  async function drag(handle,dx,dy){const box=await handle.boundingBox();assert.ok(box);await page.mouse.move(box.x+box.width/2,box.y+box.height/2);await page.mouse.down();await page.mouse.move(box.x+box.width/2+dx,box.y+box.height/2+dy,{steps:12});await page.mouse.up()}
-  for(const scale of [0,1]){
-   await page.getByRole('button',{name:'适应画布',exact:true}).click();
-   if(scale)await page.getByRole('button',{name:'放大',exact:true}).click();
-   const z=await page.locator('[class*=world]').evaluate(el=>new DOMMatrix(getComputedStyle(el).transform).a);
-   for(const id of ['brief','reference']){
-    const before=(await snapshot()).cards.find(c=>c.id===id);
-    await drag(node(id).locator(':scope > div').nth(1),45,25);
-    const after=(await snapshot()).cards.find(c=>c.id===id);close(after.x-before.x,45/z);close(after.y-before.y,25/z);
-   }
-  }
-  // Double-click content enters editing without moving or creating nodes.
-  const nodeCount=(await snapshot()).cards.length;
-  const before=(await snapshot()).cards.find(c=>c.id==='brief');
-  await node('brief').locator('textarea').dblclick({force:true});
-  assert.equal(await node('brief').locator('textarea').getAttribute('readonly'),null);
-  await node('brief').locator('textarea').fill('双击后直接编辑');
-  assert.equal((await snapshot()).cards.length,nodeCount);
-  assert.equal((await snapshot()).cards.find(c=>c.id==='brief').x,before.x);
-  assert.equal((await snapshot()).cards.find(c=>c.id==='brief').y,before.y);
+  async function drag(handle,dx,dy){const b=await handle.boundingBox();assert.ok(b);await page.mouse.move(b.x+b.width/2,b.y+b.height/2);await page.mouse.down();await page.mouse.move(b.x+b.width/2+dx,b.y+b.height/2+dy,{steps:12});await page.mouse.up()}
+  await page.goto(base+'/infinite_canvas');
+  await page.getByRole('button',{name:'从示例开始 ↗',exact:true}).click();
+  await page.getByRole('button',{name:'适应画布',exact:true}).click();
+  await content('brief').click({position:{x:20,y:20}});
+  assert.equal(await node('brief').getAttribute('data-selected'),'true');assert.equal(await node('brief').getAttribute('data-editing'),'false');
+  await page.waitForTimeout(700);
+  await content('brief').click({position:{x:20,y:20}});
+  await node('brief').getByRole('textbox',{name:'01 / 创意简报 内容'}).fill('选择后再次点击进入编辑');
+  await waitField('brief','text','选择后再次点击进入编辑');
+  await node('brief').getByRole('button',{name:'加粗',exact:true}).click();
+  assert.equal((await snapshot()).cards.find(n=>n.id==='brief').style.bold,true);
   await page.keyboard.press('Escape');
-  const chooser=page.waitForEvent('filechooser');
-  await node('reference').getByRole('button',{name:/替换.*图片/}).dblclick();
-  const imagePicker=await chooser;
-  await imagePicker.setFiles({name:'replacement.png',mimeType:'image/png',buffer:Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+jC1sAAAAASUVORK5CYII=','base64')});
-  await page.waitForFunction(()=>JSON.parse(localStorage.getItem('studio.infinite-canvas.v1')).cards.find(c=>c.id==='reference').image?.startsWith('data:image/png;base64,'));
-  assert.equal((await snapshot()).cards.length,nodeCount);
+  const before=(await snapshot()).cards.find(n=>n.id==='brief');
+  const z=await page.locator('[class*=world]').evaluate(el=>new DOMMatrix(getComputedStyle(el).transform).a);
+  await drag(content('brief'),45,25);
+  const after=(await snapshot()).cards.find(n=>n.id==='brief');close(after.x-before.x,45/z);close(after.y-before.y,25/z);
+  assert.equal(await node('brief').getAttribute('data-editing'),'false');
+
+  await content('reference').click();assert.equal(await composer.count(),0);
+  await page.waitForTimeout(700);await content('reference').click();await composer.waitFor();assert.equal(choosers,0,'Entering image editing must not force a file picker');
+  const panelBefore=await composer.boundingBox(),imageBefore=await node('reference').boundingBox();
+  await page.getByRole('button',{name:'缩小',exact:true}).click();
+  const panelAfter=await composer.boundingBox(),imageAfter=await node('reference').boundingBox();
+  close(panelBefore.width,panelAfter.width);close(panelBefore.height,panelAfter.height);assert.ok(imageAfter.width<imageBefore.width);
+  const chooser=page.waitForEvent('filechooser');await composer.getByRole('button',{name:'上传图片',exact:true}).click();
+  await (await chooser).setFiles({name:'reference.png',mimeType:'image/png',buffer:Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+ip1sAAAAASUVORK5CYII=','base64')});
+  await page.waitForFunction(()=>!!JSON.parse(localStorage.getItem('studio.infinite-canvas.v1')).cards.find(n=>n.id==='reference').image);
+  await node('reference').getByRole('button',{name:'图片高清 ↗',exact:true}).click();
+  const upscale=(await snapshot()).cards.find(n=>n.operation==='upscale');assert.ok(upscale);
+  const download=page.waitForEvent('download');await composer.getByRole('button',{name:'导出任务',exact:true}).click();
+  const task=JSON.parse(await fs.readFile(await (await download).path(),'utf8'));
+  assert.equal(task.target.id,upscale.id);assert.equal(task.references[0].id,'reference');assert.ok(task.references[0].image);
+
+  await page.keyboard.press('Escape');await page.getByRole('button',{name:'适应画布',exact:true}).click();
+  await content('brief').click({position:{x:20,y:20}});
+  await node('brief').getByRole('button',{name:'引用 01 / 创意简报 生成',exact:true}).click();
+  await page.getByRole('dialog',{name:'画布操作'}).getByRole('button',{name:'脚本',exact:true}).click();
+  const script=(await snapshot()).cards.find(n=>n.kind==='script');assert.ok(script);
+  await composer.getByRole('textbox',{name:'创作要求',exact:true}).fill('基于简报写六个分镜');
+  await waitField(script.id,'instruction','基于简报写六个分镜');assert.equal((await snapshot()).cards.find(n=>n.id===script.id).text,'');
+  await composer.getByRole('button',{name:'画布参考',exact:true}).click();
+  await composer.getByRole('group',{name:'选择引用节点'}).getByRole('button',{name:'02 / 视觉参考',exact:true}).click();
+  assert.ok((await snapshot()).links.some(([a,b])=>a==='reference'&&b===script.id));
+  await composer.getByRole('button',{name:'移除引用 01 / 创意简报',exact:true}).click();
+  assert.ok(!(await snapshot()).links.some(([a,b])=>a==='brief'&&b===script.id));
   await page.keyboard.press('Escape');
-  assert.equal(await node('brief').locator('textarea').getAttribute('readonly'),'');await node('brief').getByRole('button',{name:/^编辑 /}).click();await node('brief').locator('textarea').fill('真实工具内编辑 · 输入不能移动节点');
-  const edited=(await snapshot()).cards.find(c=>c.id==='brief');assert.equal(edited.x,before.x);assert.equal(edited.y,before.y);
-  await drag(node('brief').locator('textarea'),20,10);const inEdit=(await snapshot()).cards.find(c=>c.id==='brief');assert.equal(inEdit.x,edited.x);assert.equal(inEdit.y,edited.y);await node('brief').getByRole('button',{name:/^完成编辑 /}).click();const resize=node('brief').getByRole('button',{name:/调整/});await drag(resize,60,40);
-  assert.ok((await snapshot()).cards.find(c=>c.id==='brief').width>320);
-  await page.getByRole('button',{name:'撤销',exact:true}).click();assert.equal((await snapshot()).cards.find(c=>c.id==='brief').width,undefined);
-  await page.getByRole('button',{name:'重做',exact:true}).click();assert.ok((await snapshot()).cards.find(c=>c.id==='brief').width>320);
-  // Each SVG endpoint must agree with the actual transformed node edge, after resize and pan.
-  async function wires(){const mismatch=await page.evaluate(()=>{
-   return [...document.querySelectorAll('svg path')].filter(p=>p.getAttribute('d')?.startsWith('M ')).slice(0,1).some(p=>{const d=p.getAttribute('d').match(/-?\d+(?:\.\d+)?/g).map(Number),world=p.closest('div').getBoundingClientRect();const matrix=p.getScreenCTM();const pt=new DOMPoint(d[0],d[1]).matrixTransform(matrix);const card=document.querySelector('[data-node-id="brief"]').getBoundingClientRect();return Math.abs(pt.x-card.right)>3||Math.abs(pt.y-(card.top+card.height/2))>3});
-  });assert.equal(mismatch,false)}
-  // The first link starts at brief; check it specifically.
-  await wires();
+  await page.getByRole('button',{name:'适应画布',exact:true}).click();
+  await content('reference').click();await node('reference').getByRole('button',{name:'02 / 视觉参考 操作',exact:true}).click();
+  await page.getByRole('button',{name:'删除节点',exact:true}).click();
+  assert.ok((await snapshot()).cards.some(n=>n.id===script.id));assert.ok((await snapshot()).links.every(l=>!l.includes('reference')));
+  await page.getByRole('button',{name:'撤销',exact:true}).click();assert.ok((await snapshot()).links.some(([a,b])=>a==='reference'&&b===script.id));
+  await page.keyboard.press('Escape');
+  await content('brief').click({position:{x:20,y:20}});
+  const priorWidth=(await snapshot()).cards.find(n=>n.id==='brief').width;
+  await drag(node('brief').getByRole('button',{name:'调整 01 / 创意简报 尺寸',exact:true}),50,30);
+  assert.ok((await snapshot()).cards.find(n=>n.id==='brief').width>(priorWidth||320));
+  await page.getByRole('button',{name:'撤销',exact:true}).click();assert.equal((await snapshot()).cards.find(n=>n.id==='brief').width,priorWidth);
+  await page.getByRole('button',{name:'重做',exact:true}).click();
   await page.getByRole('button',{name:'移动画布',exact:true}).click();
-  const viewport=page.locator('[class*="viewport"]');const box=await viewport.boundingBox();await page.mouse.move(box.x+20,box.y+20);await page.mouse.down();await page.mouse.move(box.x+100,box.y+80,{steps:8});await page.mouse.up();
-  await wires();
-  const saved=await snapshot(),view=await page.evaluate(()=>localStorage.getItem('studio.infinite-canvas.v1.view'));
-  await page.reload();await page.getByRole('heading',{name:'无限画布 / Infinite canvas'}).waitFor();assert.deepEqual(await snapshot(),saved);assert.equal(await page.evaluate(()=>localStorage.getItem('studio.infinite-canvas.v1.view')),view);
-  // Zoom must preserve the world coordinate beneath the pointer.
-  const vp=await viewport.boundingBox();assert.equal(vp.x,0);assert.equal(vp.y,0);assert.equal(vp.width,1600);assert.equal(vp.height,1100);
-  const anchor={x:vp.x+vp.width*.65,y:vp.y+vp.height*.25};
-  const worldAt=()=>page.locator('[class*=world]').evaluate((el,p)=>{const m=new DOMMatrix(getComputedStyle(el).transform);return {x:(p.x-m.e)/m.a,y:(p.y-m.f)/m.d}},anchor);
-  const point=await worldAt();await page.mouse.move(anchor.x,anchor.y);await page.keyboard.down('Control');await page.mouse.wheel(0,-80);await page.keyboard.up('Control');
-  await page.waitForFunction(old=>JSON.parse(localStorage.getItem('studio.infinite-canvas.v1.view')).zoom!==JSON.parse(old).zoom,view);
-  const pointAfter=await worldAt();close(point.x,pointAfter.x);close(point.y,pointAfter.y);
-  await page.getByRole('button',{name:'选择工具',exact:true}).click();
-  await page.getByRole('button',{name:'添加笔记',exact:true}).click();
-  assert.equal((await snapshot()).cards.length,saved.cards.length+1);
-  await page.getByRole('button',{name:/操作$/}).last().click();
-  await page.getByRole('button',{name:'复制节点',exact:true}).click();assert.equal((await snapshot()).cards.length,saved.cards.length+2);
-  await page.getByRole('button',{name:'删除节点',exact:true}).click();assert.equal((await snapshot()).cards.length,saved.cards.length+1);
-  await page.getByRole('button',{name:'撤销',exact:true}).click();assert.equal((await snapshot()).cards.length,saved.cards.length+2);
-  await page.getByRole('button',{name:'重做',exact:true}).click();assert.equal((await snapshot()).cards.length,saved.cards.length+1);
-  if(await page.getByRole('button',{name:'关闭画布操作',exact:true}).isVisible())await page.getByRole('button',{name:'关闭画布操作',exact:true}).click();
-  // Return to the saved three-node document through undo.
-  await page.getByRole('button',{name:'撤销',exact:true}).click();await page.getByRole('button',{name:'撤销',exact:true}).click();await page.getByRole('button',{name:'撤销',exact:true}).click();
-  await page.getByRole('button',{name:'适应画布',exact:true}).click();await page.reload();await page.getByRole('heading',{name:'无限画布 / Infinite canvas'}).waitFor();
-  const dock=await page.getByRole('navigation',{name:'画布工具'}).boundingBox();assert.ok(dock.y>950);assert.ok(dock.x>500);
-  await page.getByRole('button',{name:'切换明暗主题'}).click();assert.equal(await page.locator('main').getAttribute('data-theme'),'light');await page.reload();await page.waitForFunction(()=>document.querySelector('main').dataset.theme==='light');
-  if(process.env.SCREENSHOT_DIR)await page.screenshot({path:process.env.SCREENSHOT_DIR+'/canvas-light.png'});
-  await page.getByRole('button',{name:'切换明暗主题'}).click();
-  if(process.env.SCREENSHOT_DIR){await fs.mkdir(process.env.SCREENSHOT_DIR,{recursive:true});await page.screenshot({path:process.env.SCREENSHOT_DIR+'/canvas-rebuild.png'});await page.setViewportSize({width:390,height:844});assert.ok(await page.evaluate(()=>document.documentElement.scrollWidth<=innerWidth));const mobile=await viewport.boundingBox();assert.equal(mobile.width,390);assert.equal(mobile.height,844);await page.getByRole('button',{name:'适应画布',exact:true}).click();await page.screenshot({path:process.env.SCREENSHOT_DIR+'/canvas-mobile.png'});}
-  assert.deepEqual(errors,[]);console.log('Passed: two-node drag at two scales, inline input, resize, undo/redo, wires, pan, reload, pointer zoom, CRUD and full-screen desktop/mobile');
+  await page.mouse.move(15,300);await page.mouse.down();await page.mouse.move(75,340,{steps:8});await page.mouse.up();
+  assert.equal(await page.evaluate(()=>{const path=[...document.querySelectorAll('svg path')].find(p=>p.getAttribute('d')?.startsWith('M '));const d=path.getAttribute('d').match(/-?\d+(?:\.\d+)?/g).map(Number),point=new DOMPoint(d[0],d[1]).matrixTransform(path.getScreenCTM()),card=document.querySelector('[data-node-id="brief"]').getBoundingClientRect();return Math.abs(point.x-card.right)<3&&Math.abs(point.y-(card.top+card.height/2))<3}),true);
+  const worldAt=()=>page.locator('[class*=world]').evaluate(el=>{const m=new DOMMatrix(getComputedStyle(el).transform);return {x:(1450-m.e)/m.a,y:(150-m.f)/m.d,z:m.a}});
+  const anchorBefore=await worldAt();await page.mouse.move(1450,150);await page.keyboard.down('Control');await page.mouse.wheel(0,-80);await page.keyboard.up('Control');
+  await page.waitForFunction(z=>new DOMMatrix(getComputedStyle(document.querySelector('[class*=world]')).transform).a!==z,anchorBefore.z);
+  const anchorAfter=await worldAt();close(anchorBefore.x,anchorAfter.x);close(anchorBefore.y,anchorAfter.y);
+  const saved=await snapshot();await page.reload();await page.waitForFunction(()=>!!localStorage.getItem('studio.infinite-canvas.v1'));assert.deepEqual(await snapshot(),saved);
+  await page.getByRole('button',{name:'切换明暗主题',exact:true}).click();await page.reload();await page.waitForFunction(()=>document.querySelector('main').dataset.theme==='light');
+  if(process.env.SCREENSHOT_DIR){await fs.mkdir(process.env.SCREENSHOT_DIR,{recursive:true});await page.screenshot({path:process.env.SCREENSHOT_DIR+'/canvas-nodes-desktop.png'});}
+  await page.setViewportSize({width:390,height:844});assert.ok(await page.evaluate(()=>document.documentElement.scrollWidth<=innerWidth));
+  const viewport=await page.locator('[class*=viewport]').boundingBox();assert.equal(viewport.width,390);assert.equal(viewport.height,844);
+  if(process.env.SCREENSHOT_DIR)await page.screenshot({path:process.env.SCREENSHOT_DIR+'/canvas-nodes-mobile.png'});
+  assert.deepEqual(errors,[]);console.log('Passed: selected-node re-click editing, drag, formatting, fixed composer, upload, references, task export, deletion/undo, reload and mobile bounds');
  }finally{await browser.close()}
 })().catch(e=>{console.error(e);process.exitCode=1});
diff --git a/apps/studio/src/components/canvas/CanvasAgentPanel.tsx b/apps/studio/src/components/canvas/CanvasAgentPanel.tsx
new file mode 100644
index 0000000..175c086
--- /dev/null
+++ b/apps/studio/src/components/canvas/CanvasAgentPanel.tsx
@@ -0,0 +1,38 @@
+import {forwardRef,useEffect,useImperativeHandle,useRef,useState} from 'react';
+import {parseCanvasDocument,type CanvasDocument} from '../../lib/canvas-document';
+import s from '../../styles/canvas-agent.module.css';
+type Task={id:string;targetId:string;status:'queued'|'running'|'succeeded'|'failed';error?:string};
+type State={id:string;name:string;revision:number;document:CanvasDocument;tasks:Task[]};
+type LinkState={expiresAt:string;lastSeenAt:string|null};
+export type CanvasAgentHandle={queue:(target:string)=>Promise<void>};
+type Props={document:CanvasDocument;email:string;onLoad:(document:CanvasDocument)=>void;onFeedback:(text:string)=>void};
+async function api(path:string,method='GET',body?:unknown){const r=await fetch('/api/canvases'+path,{method,headers:body?{'Content-Type':'application/json'}:undefined,...(body?{body:JSON.stringify(body)}:{})});const data=await r.json();if(!r.ok)throw Error(data.error||'在线画布暂时不可用');return data;}
+const names={queued:'等待 Agent',running:'Agent 正在处理',succeeded:'已完成',failed:'已结束'};
+export default forwardRef<CanvasAgentHandle,Props>(function CanvasAgentPanel(p,ref){
+ const [open,setOpen]=useState(false),[busy,setBusy]=useState(false),[message,setMessage]=useState(''),[remote,setRemote]=useState<State|null>(null),[pending,setPending]=useState<State|null>(null),[connection,setConnection]=useState<LinkState|null>(null),[credential,setCredential]=useState(''),[items,setItems]=useState<{id:string;name:string}[]>([]);
+ const live=useRef(p.document),synced=useRef(''),current=useRef<State|null>(null),locked=useRef(false),account=useRef(p.email),generation=useRef(0),credentialField=useRef<HTMLTextAreaElement>(null);
+ live.current=p.document;account.current=p.email;
+ function update(state:State){current.current=state;setRemote(state);}
+ function apply(state:State){state={...state,document:parseCanvasDocument(state.document)};synced.current=JSON.stringify(state.document);update(state);setPending(null);p.onLoad(state.document);}
+ async function run(action:()=>Promise<void>){if(locked.current)return;locked.current=true;setBusy(true);try{await action()}catch(e){const text=e instanceof Error?e.message:'操作失败';setMessage(text);p.onFeedback(text)}finally{locked.current=false;setBusy(false)}}
+ useEffect(()=>{generation.current++;current.current=null;synced.current='';setRemote(null);setPending(null);setConnection(null);setCredential('');setItems([]);if(!p.email)return;const epoch=generation.current;void api('').then(data=>{if(epoch===generation.current)setItems(data.canvases)}).catch(()=>{});},[p.email]);
+ useEffect(()=>{if(!remote||!p.email)return;const id=remote.id,epoch=generation.current;let cancelled=false;const poll=async()=>{try{const state:State=await api('/'+id);if(cancelled||epoch!==generation.current||current.current?.id!==id||locked.current)return;if(state.revision!==current.current.revision){if(JSON.stringify(live.current)===synced.current){apply(state);setMessage('已同步 Agent 的画布更新')}else{setPending(state);setMessage('在线画布有更新，请选择要保留的版本')}}else update(state);const link=await api('/'+id+'/link');if(!cancelled&&epoch===generation.current)setConnection(link.link)}catch(e){if(!cancelled)setMessage(e instanceof Error?e.message:'同步失败')}};void poll();const timer=setInterval(()=>void poll(),5000);return()=>{cancelled=true;clearInterval(timer)};},[remote?.id,p.email]);
+ async function save():Promise<State>{if(!account.current)throw Error('请先登录邮箱账户');if(pending)throw Error('请先处理在线版本冲突');const doc=live.current,serialized=JSON.stringify(doc),old=current.current;const state:State=old?serialized===synced.current?old:await api('/'+old.id,'PUT',{revision:old.revision,document:doc}):await api('','POST',{document:doc,name:'灵感画布 '+new Date().toLocaleDateString()});if(account.current!==p.email)throw Error('账户已切换，请重新连接');synced.current=serialized;update(state);setMessage('已保存在线画布');return state;}
+ useImperativeHandle(ref,()=>({queue:async target=>{setOpen(true);await run(async()=>{const state=await save();if(JSON.stringify(live.current)!==synced.current)throw Error('画布刚有修改，请重新派发任务');const task:Task=await api('/'+state.id+'/tasks','POST',{revision:state.revision,targetId:target});if(account.current!==p.email)return;update({...state,tasks:[task,...state.tasks]});setMessage('任务已创建，等待你的 coding agent 领取');p.onFeedback('任务已创建，等待 Agent')})}}));
+ async function connect(){const state=await save(),link=await api('/'+state.id+'/link','POST',{});if(account.current!==p.email)return;setConnection({expiresAt:link.expiresAt,lastSeenAt:null});setCredential(JSON.stringify({canvasUrl:location.origin+'/api/canvases/'+state.id,authorization:'Bearer '+link.token,documentation:location.origin+link.documentation,expiresAt:link.expiresAt},null,2));setMessage('连接凭据已生成，有效期 1 小时');}
+ async function copyCredential(){
+  if(navigator.clipboard?.writeText){try{await navigator.clipboard.writeText(credential);setMessage('凭据已复制');return}catch{}}
+  const field=credentialField.current;if(!field)return;field.focus();field.select();
+  let copied=false;try{copied=document.execCommand('copy')}catch{}
+  setMessage(copied?'凭据已复制':'已选中凭据，请按 Ctrl+C 或 ⌘C 复制');
+ }
+ const dirty=!!remote&&JSON.stringify(p.document)!==synced.current;
+ return <div className={s.root}><button onClick={()=>setOpen(v=>!v)} aria-expanded={open}>Agent{remote?' · 在线画布':''}</button>{open&&<section className={s.panel} aria-label="Agent 连接"><header><strong>你的 coding agent</strong><button aria-label="关闭 Agent 连接" onClick={()=>setOpen(false)}>×</button></header>{!p.email?<a href="/account">登录后连接在线画布 ↗</a>:<>
+ <div className={s.actions}><button disabled={busy||!!pending} onClick={()=>void run(async()=>{await save()})}>{remote?(dirty?'保存修改':'已同步'):'保存为在线画布'}</button><button disabled={busy||!!pending} onClick={()=>void run(connect)}>生成连接凭据</button>{connection&&<button disabled={busy} onClick={()=>void run(async()=>{await api('/'+current.current!.id+'/link','DELETE',{});setConnection(null);setCredential('');setMessage('Agent 访问已撤销')})}>撤销连接</button>}</div>
+ {!remote&&<label>打开在线画布<select aria-label="打开在线画布" defaultValue="" disabled={busy} onChange={e=>{const id=e.target.value;if(id)void run(async()=>{const state:State=await api('/'+id);parseCanvasDocument(state.document);setPending(state);setMessage('加载在线画布将替换当前草稿，请先导出需要保留的内容')})}}><option value="">选择画布</option>{items.map(item=><option value={item.id} key={item.id}>{item.name} · {item.id.slice(0,8)}</option>)}</select></label>}
+ {connection&&<small>{connection.lastSeenAt?'Agent 最近访问：'+new Date(connection.lastSeenAt).toLocaleTimeString():'等待 Agent 首次访问'} · 到期 {new Date(connection.expiresAt).toLocaleTimeString()}</small>}
+ {credential&&<><textarea ref={credentialField} aria-label="Agent 连接凭据" readOnly value={credential}/><button onClick={()=>void copyCredential()}>复制给 coding agent</button></>}
+ {pending&&<div className={s.conflict}><button disabled={busy} onClick={()=>{apply(pending);setMessage('已载入在线版本')}}>载入在线版本</button><button disabled={busy} onClick={()=>{setPending(null);current.current=null;setRemote(null);synced.current='';setConnection(null);setCredential('');setMessage('已保留本机草稿，可另存为新画布')}}>保留草稿并断开</button></div>}
+ {!!remote?.tasks.length&&<ul aria-label="画布任务">{remote.tasks.slice(0,8).map(task=><li key={task.id}><span>{p.document.cards.find(n=>n.id===task.targetId)?.title||'已移除节点'} · {names[task.status]}</span>{task.error&&<small>{task.error}</small>}{['queued','running'].includes(task.status)&&<button disabled={busy} onClick={()=>void run(async()=>{await api('/'+remote.id+'/tasks/'+task.id,'PATCH',{status:'failed',error:'用户结束任务'});setMessage('任务已结束，可修改后重新派发')})}>结束任务</button>}</li>)}</ul>}
+ </>}<p role="status">{message}</p><a href="/api/canvases?agent_mode=True" target="_blank" rel="noreferrer">接入文档 ↗</a></section>}</div>
+});
diff --git a/apps/studio/src/components/canvas/CanvasComposer.tsx b/apps/studio/src/components/canvas/CanvasComposer.tsx
new file mode 100644
index 0000000..4f82298
--- /dev/null
+++ b/apps/studio/src/components/canvas/CanvasComposer.tsx
@@ -0,0 +1,9 @@
+import {useEffect,useState} from 'react';
+import {ImagePlus,FileText,Plus,X,Maximize,Download,ArrowUp} from 'lucide-react';
+import type {CanvasNode} from '../../lib/canvas-document';
+import s from '../../styles/canvas-composer.module.css';
+type Props={pickerRequest:number;feedback:string;node:CanvasNode;nodes:CanvasNode[];references:CanvasNode[];onChange:(text:string)=>void;onRename:(title:string)=>void;onBeginEdit:()=>void;onUpload:()=>void;onAddReference:(id:string)=>void;onRemoveReference:(id:string)=>void;onQueue:()=>void;onExport:()=>void;onClose:()=>void};
+export default function CanvasComposer(p:Props){const [expanded,expand]=useState(false),[choosing,choose]=useState(false);useEffect(()=>{if(p.pickerRequest)choose(true)},[p.pickerRequest]);return <section className={s.composer} data-expanded={expanded} aria-label="节点编辑器"><header><span>{p.node.kind==='image'?<ImagePlus size={16}/>:<FileText size={16}/>} <input aria-label="节点名称" maxLength={200} value={p.node.title} onFocus={p.onBeginEdit} onChange={e=>p.onRename(e.target.value)}/></span><div>{p.node.kind==='image'&&<button onClick={p.onUpload}><Plus size={15}/>上传图片</button>}<button aria-expanded={choosing} onClick={()=>choose(v=>!v)}><Plus size={15}/>画布参考</button><button aria-label="展开编辑器" aria-pressed={expanded} onClick={()=>expand(v=>!v)}><Maximize size={16}/></button><button aria-label="关闭节点编辑器" onClick={p.onClose}><X size={17}/></button></div></header>
+ {choosing&&<div className={s.picker} role="group" aria-label="选择引用节点">{p.nodes.filter(n=>n.id!==p.node.id&&!p.references.some(r=>r.id===n.id)).map(n=><button key={n.id} onClick={()=>{p.onAddReference(n.id);choose(false)}}>{n.kind==='image'?<ImagePlus size={15}/>:<FileText size={15}/>} {n.title}</button>)}{p.nodes.length<2&&<span>先在画布上添加一个参考节点</span>}</div>}
+ {!!p.references.length&&<div className={s.references}>{p.references.map((n,i)=><div className={s.reference} key={n.id}>{n.image?<img src={n.image} alt={n.title}/>:<FileText size={24}/>}<span>{i+1}</span><small>{n.title}</small><button aria-label={`移除引用 ${n.title}`} onClick={()=>p.onRemoveReference(n.id)}><X size={12}/></button></div>)}</div>}
+ <textarea aria-label="创作要求" maxLength={10000} value={p.node.instruction??p.node.text} onFocus={p.onBeginEdit} onChange={e=>p.onChange(e.target.value)} placeholder={p.node.kind==='script'?'描述剧情片段、故事或分镜要求…':'描述画面，或写下对参考图的修改要求…'}/><footer><span role="status">{p.feedback||<>{p.node.operation==='upscale'?'图片高清':p.node.kind==='script'?'分镜脚本':'创作任务'} · {p.references.length} 个引用</>}</span><div><button onClick={p.onExport}><Download size={15}/>导出任务</button><button onClick={p.onQueue}><ArrowUp size={15}/>交给 Agent</button></div></footer></section>}
diff --git a/apps/studio/src/components/canvas/CanvasNodeView.tsx b/apps/studio/src/components/canvas/CanvasNodeView.tsx
new file mode 100644
index 0000000..509a146
--- /dev/null
+++ b/apps/studio/src/components/canvas/CanvasNodeView.tsx
@@ -0,0 +1,16 @@
+import {useRef,type PointerEvent} from 'react';
+import {Type,ImagePlus,FileText,Plus,Bold,Italic,Maximize,MoreHorizontal} from 'lucide-react';
+import type {CanvasNode,TextStyle} from '../../lib/canvas-document';
+import s from '../../styles/canvas-node.module.css';
+type Props={node:CanvasNode;selected:boolean;editing:boolean;hand:boolean;onSelect:()=>void;onChooseReference:()=>void;onEdit:()=>void;onDrag:(e:PointerEvent<HTMLElement>)=>void;onResize:(e:PointerEvent<HTMLElement>)=>void;onChange:(text:string)=>void;onRename:(title:string)=>void;onStyle:(style:TextStyle)=>void;onReference:(e:PointerEvent<HTMLButtonElement>|React.MouseEvent<HTMLButtonElement>)=>void;onMenu:(e:React.MouseEvent<HTMLButtonElement>)=>void;onUpload:()=>void;onUpscale:()=>void;onExpand:()=>void;onBeginEdit:()=>void};
+export default function CanvasNodeView(p:Props){
+ const {node:n}=p;const gesture=useRef<{selected:boolean;x:number;y:number;moved:boolean}|null>(null);
+ const icon=n.kind==='image'?<ImagePlus size={15}/>:n.kind==='script'?<FileText size={15}/>:<Type size={15}/>;
+ const style={fontWeight:n.style?.bold?700:400,fontStyle:n.style?.italic?'italic':'normal',fontSize:n.style?.size||15,color:n.style?.color};
+ return <article data-node-id={n.id} data-editing={p.editing} data-selected={p.selected} className={s.node} style={{left:n.x,top:n.y,width:n.width||320,height:n.height||350}} onPointerDown={e=>{gesture.current=null;if(p.hand||(p.editing&&n.kind==='text')||e.button!==0||(e.target as HTMLElement).closest('button,input,select'))return;gesture.current={selected:p.selected,x:e.clientX,y:e.clientY,moved:false};e.stopPropagation();p.onSelect();p.onDrag(e)}} onPointerMove={e=>{const g=gesture.current;if(g&&Math.hypot(e.clientX-g.x,e.clientY-g.y)>=4)g.moved=true}} onClick={e=>{if((e.target as HTMLElement).closest('button,input,select'))return;const g=gesture.current;if(!p.hand&&!p.editing&&g?.selected&&!g.moved)p.onEdit();gesture.current=null}} onKeyDown={e=>{if(e.target!==e.currentTarget)return;if(e.key==='Enter'){e.preventDefault();p.onEdit()}}} tabIndex={0} aria-label={n.title}>
+ <header className={s.title}>{icon}<input aria-label="节点名称" value={n.title} maxLength={200} onFocus={p.onBeginEdit} onChange={e=>p.onRename(e.target.value)} onPointerDown={e=>e.stopPropagation()}/>{p.selected&&<button aria-label={`${n.title} 操作`} onClick={e=>{e.stopPropagation();p.onMenu(e)}}><MoreHorizontal size={17}/></button>}</header>
+ {p.editing&&n.kind==='text'&&<div className={s.format} onPointerDown={e=>e.stopPropagation()}><input aria-label="文字颜色" type="color" value={n.style?.color||'#dddddd'} onChange={e=>p.onStyle({...n.style,color:e.target.value})}/><select aria-label="文字样式" value={n.style?.size||15} onChange={e=>p.onStyle({...n.style,size:Number(e.target.value)})}><option value={15}>正文</option><option value={24}>小标题</option><option value={32}>标题</option></select><button aria-label="加粗" aria-pressed={!!n.style?.bold} onClick={()=>p.onStyle({...n.style,bold:!n.style?.bold})}><Bold size={17}/></button><button aria-label="斜体" aria-pressed={!!n.style?.italic} onClick={()=>p.onStyle({...n.style,italic:!n.style?.italic})}><Italic size={17}/></button><button aria-label="展开文本节点" onClick={p.onExpand}><Maximize size={17}/></button></div>}
+ {n.kind==='image'?<div data-node-content className={s.image}>{n.image?<img src={n.image} alt={n.title} draggable={false}/>:<div className={s.empty}><ImagePlus size={48} strokeWidth={1}/><button onClick={e=>{e.stopPropagation();p.onUpload()}}>上传图片</button></div>}{p.selected&&n.image&&<button className={s.upscale} onClick={e=>{e.stopPropagation();p.onUpscale()}}>图片高清 ↗</button>}</div>:p.editing&&n.kind==='text'?<textarea data-node-content autoFocus aria-label={`${n.title} 内容`} style={style} value={n.text} maxLength={10000} placeholder="输入内容…" onFocus={p.onBeginEdit} onChange={e=>p.onChange(e.target.value)}/>:<div data-node-content className={s.content} style={style}>{n.text?<p>{n.text}</p>:<div className={s.empty}>{icon}<button onClick={e=>{e.stopPropagation();p.onEdit()}}>{n.kind==='text'?'自己编写内容':n.kind==='script'?'编写脚本':'填写创作要求'}</button></div>}</div>}
+ {p.selected&&<><button className={`${s.reference} ${s.incoming}`} aria-label={`为 ${n.title} 添加参考`} onClick={e=>{e.stopPropagation();p.onChooseReference()}}><Plus size={18}/></button><button className={s.reference} aria-label={`引用 ${n.title} 生成`} onClick={e=>{e.stopPropagation();p.onReference(e)}}><Plus size={18}/></button><button className={s.resize} aria-label={`调整 ${n.title} 尺寸`} onPointerDown={e=>{e.stopPropagation();gesture.current=null;p.onResize(e)}} onClick={e=>e.stopPropagation()}>↘</button></>}
+ </article>;
+}
diff --git a/apps/studio/src/lib/canvas-document.ts b/apps/studio/src/lib/canvas-document.ts
new file mode 100644
index 0000000..f7f55da
--- /dev/null
+++ b/apps/studio/src/lib/canvas-document.ts
@@ -0,0 +1,72 @@
+export type NodeKind = 'text' | 'image' | 'prompt' | 'script';
+export type TextStyle = {bold?:boolean;italic?:boolean;color?:string;size?:number};
+export type CanvasNode = {
+ id:string;kind:NodeKind;title:string;text:string;x:number;y:number;
+ image?:string;width?:number;height?:number;style?:TextStyle;
+ instruction?:string;
+ operation?:'generate'|'upscale'|'script';
+};
+export type CanvasDocument = {version:1;cards:CanvasNode[];links:[string,string][]};
+const kinds:NodeKind[]=['text','image','prompt','script'];
+const object=(v:unknown):v is Record<string,unknown>=>!!v&&typeof v==='object'&&!Array.isArray(v);
+const bounded=(v:unknown,min:number,max:number)=>typeof v==='number'&&Number.isFinite(v)&&v>=min&&v<=max;
+const text=(v:unknown,max:number)=>typeof v==='string'&&v.length<=max;
+const image=(v:unknown)=>typeof v==='string'&&v.length<3000000&&/^data:image\/(png|jpeg|webp);base64,[A-Za-z0-9+/=]+$/.test(v);
+
+export function parseCanvasDocument(value:unknown):CanvasDocument {
+ const d=typeof value==='string'?JSON.parse(value):value;
+ if(!object(d)||d.version!==1||!Array.isArray(d.cards)||d.cards.length>80||!Array.isArray(d.links)||d.links.length>200)throw Error('画布格式不正确');
+ const ids=new Set<string>();
+ const cards:CanvasNode[]=d.cards.map((n:unknown)=>{
+  if(!object(n)||!text(n.id,100)||!n.id||ids.has(n.id as string)||!kinds.includes(n.kind as NodeKind)||!text(n.title,200)||!text(n.text,10000)||!bounded(n.x,-100000,100000)||!bounded(n.y,-100000,100000))throw Error('节点格式不正确');
+  if(n.width!==undefined&&!bounded(n.width,180,1200)||n.height!==undefined&&!bounded(n.height,160,1200)||n.image!==undefined&&!image(n.image))throw Error('节点尺寸或图片不正确');
+  if(n.instruction!==undefined&&!text(n.instruction,10000))throw Error('创作要求格式不正确');
+  if(n.operation!==undefined&&!['generate','upscale','script'].includes(n.operation as string))throw Error('生成任务类型不正确');
+  let style:TextStyle|undefined;
+  if(n.style!==undefined){
+   if(!object(n.style)||n.style.bold!==undefined&&typeof n.style.bold!=='boolean'||n.style.italic!==undefined&&typeof n.style.italic!=='boolean'||n.style.color!==undefined&&(typeof n.style.color!=='string'||!/^#[a-f\d]{6}$/i.test(n.style.color))||n.style.size!==undefined&&!bounded(n.style.size,10,72))throw Error('文字样式不正确');
+   style={...(n.style.bold===undefined?{}:{bold:n.style.bold as boolean}),...(n.style.italic===undefined?{}:{italic:n.style.italic as boolean}),...(n.style.color===undefined?{}:{color:n.style.color as string}),...(n.style.size===undefined?{}:{size:n.style.size as number})};
+  }
+  ids.add(n.id as string);
+  return {id:n.id as string,kind:n.kind as NodeKind,title:n.title as string,text:n.text as string,x:n.x as number,y:n.y as number,...(n.width===undefined?{}:{width:n.width as number}),...(n.height===undefined?{}:{height:n.height as number}),...(n.image===undefined?{}:{image:n.image as string}),...(style?{style}:{}),...(n.instruction===undefined?{}:{instruction:n.instruction as string}),...(n.operation===undefined?{}:{operation:n.operation as CanvasNode['operation']})};
+ });
+ const pairs=new Set<string>();
+ const links:[string,string][]=d.links.map((l:unknown)=>{
+  if(!Array.isArray(l)||l.length!==2||l[0]===l[1]||!l.every(id=>typeof id==='string'&&ids.has(id)))throw Error('引用节点不存在');
+  const key=JSON.stringify(l);if(pairs.has(key))throw Error('引用重复');pairs.add(key);return [l[0],l[1]];
+ });
+ const outgoing=new Map<string,string[]>(),indegree=new Map(cards.map(n=>[n.id,0]));
+ for(const [from,to] of links){outgoing.set(from,[...(outgoing.get(from)||[]),to]);indegree.set(to,indegree.get(to)!+1)}
+ const roots=cards.filter(n=>indegree.get(n.id)===0).map(n=>n.id);let visited=0;
+ while(roots.length){const id=roots.pop()!;visited++;for(const to of outgoing.get(id)||[]){const count=indegree.get(to)!-1;indegree.set(to,count);if(!count)roots.push(to)}}
+ if(visited!==cards.length)throw Error('引用不能形成循环');
+ return {version:1,cards,links};
+}
+
+export function referencedNodes(doc:CanvasDocument,target:string):CanvasNode[]{
+ return doc.links.filter(([,to])=>to===target).map(([from])=>doc.cards.find(n=>n.id===from)!).filter(Boolean);
+}
+export function connectNodes(doc:CanvasDocument,from:string,to:string):CanvasDocument {
+ if(from===to||![from,to].every(id=>doc.cards.some(n=>n.id===id)))throw Error('请选择不同的有效节点');
+ if(doc.links.some(([a,b])=>a===from&&b===to))return doc;
+ if(doc.links.length>=200)throw Error('最多 200 条引用');
+ const seen=new Set<string>();const pending=[to];
+ while(pending.length){const id=pending.pop()!;if(id===from)throw Error('引用不能形成循环');if(seen.has(id))continue;seen.add(id);pending.push(...doc.links.filter(([a])=>a===id).map(([,b])=>b));}
+ return {...doc,links:[...doc.links,[from,to]]};
+}
+export function removeCanvasNode(doc:CanvasDocument,id:string):CanvasDocument {
+ return {...doc,cards:doc.cards.filter(n=>n.id!==id),links:doc.links.filter(l=>!l.includes(id))};
+}
+export function deriveNode(doc:CanvasDocument,source:string,node:CanvasNode):CanvasDocument {
+ if(doc.cards.length>=80||doc.cards.some(n=>n.id===node.id))throw Error('节点数量或标识不正确');
+ const result=connectNodes({...doc,cards:[...doc.cards,node]},source,node.id);
+ return parseCanvasDocument(result);
+}
+export function agentTask(doc:CanvasDocument,id:string){
+ const node=doc.cards.find(n=>n.id===id);if(!node)throw Error('目标节点不存在');
+ const instruction=node.instruction??node.text;
+ if(!instruction.trim()&&node.operation!=='upscale')throw Error('请先填写创作要求');
+ const references=referencedNodes(doc,id);
+ if(node.operation==='upscale'&&!references.some(n=>n.kind==='image'&&n.image))throw Error('请先引用一张图片');
+ return {schema:'studio.canvas-task/1',target:{id:node.id,kind:node.kind,title:node.title},operation:node.operation||'generate',instruction,...(node.image?{sourceImage:node.image}:{}),references:references.map(n=>({id:n.id,kind:n.kind,title:n.title,text:n.text,...(n.image?{image:n.image}:{}),...(n.style?{style:n.style}:{})})),result:{targetId:node.id,allowedFields:node.kind==='image'?['image','text']:['text']}};
+}
diff --git a/apps/studio/src/pages/api/index.ts b/apps/studio/src/pages/api/index.ts
index 6c0b54b..3e75da6 100644
--- a/apps/studio/src/pages/api/index.ts
+++ b/apps/studio/src/pages/api/index.ts
@@ -1,3 +1,3 @@
 import type {NextApiRequest,NextApiResponse} from 'next';
 import {ideas} from '../../content/ideas';
-export default function handler(_:NextApiRequest,res:NextApiResponse){res.setHeader('Content-Type','text/markdown; charset=utf-8');res.send('# 创作站\n\n- [27 套排版目录与 API](/studio/api/layouts?agent_mode=True)\n- [多页作品与统一视觉](/api/studio/series?agent_mode=True)\n- [按 ID 保存效果](/api/studio/designs?agent_mode=True)\n\n'+ideas.map(i=>`- [${i.title}](/studio/ideas/${i.slug}) · [正文](/studio/api/export/${i.slug}?format=markdown)`).join('\n'));}
+export default function handler(_:NextApiRequest,res:NextApiResponse){res.setHeader('Content-Type','text/markdown; charset=utf-8');res.send('# 创作站\n\n- [在线画布、引用与 Agent 任务](/api/canvases?agent_mode=True)\n- [27 套排版目录与 API](/studio/api/layouts?agent_mode=True)\n- [多页作品与统一视觉](/api/studio/series?agent_mode=True)\n- [按 ID 保存效果](/api/studio/designs?agent_mode=True)\n\n'+ideas.map(i=>`- [${i.title}](/studio/ideas/${i.slug}) · [正文](/studio/api/export/${i.slug}?format=markdown)`).join('\n'));}
diff --git a/apps/studio/src/pages/infinite_canvas/index.tsx b/apps/studio/src/pages/infinite_canvas/index.tsx
index 9666c5a..499ebd6 100644
--- a/apps/studio/src/pages/infinite_canvas/index.tsx
+++ b/apps/studio/src/pages/infinite_canvas/index.tsx
@@ -2,42 +2,57 @@ import Head from 'next/head';
 import {useEffect,useRef,useState} from 'react';
 import {ArrowLeft,Plus,MousePointer2,Hand,ImagePlus,Type,Workflow,Undo2,Redo2,Minus,Maximize,Download,Upload,Trash2,Link2,Sparkles,ChevronRight,Sun,Moon} from 'lucide-react';
 import s from '../../styles/infinite-canvas.module.css';
-type Card={id:string;kind:'text'|'image'|'prompt';title:string;text:string;x:number;y:number;image?:string;width?:number;height?:number};
-type Doc={version:1;cards:Card[];links:[string,string][]};
+import CanvasNodeView from '../../components/canvas/CanvasNodeView';
+import CanvasComposer from '../../components/canvas/CanvasComposer';
+import CanvasAgentPanel,{type CanvasAgentHandle} from '../../components/canvas/CanvasAgentPanel';
+import {parseCanvasDocument,deriveNode,connectNodes,removeCanvasNode,referencedNodes,agentTask,type CanvasNode as Card,type CanvasDocument as Doc} from '../../lib/canvas-document';
 const example:Doc={version:1,cards:[{id:'brief',kind:'text',title:'01 / 创意简报',text:'把日常，拍成一场电影。\n\n一段关于城市清晨的视觉散文。低饱和色彩、自然光与细腻颗粒，让每一帧都有呼吸感。',x:70,y:140},{id:'reference',kind:'image',title:'02 / 视觉参考',text:'晨光 · 建筑 · 胶片质感\n上传你的参考图片',x:460,y:80},{id:'shot',kind:'prompt',title:'03 / 镜头构思',text:'清晨，阳光穿过窗边的植物，落在安静的房间里。缓慢推进镜头，35mm 胶片，温暖柔和的光线。',x:850,y:160}],links:[['brief','reference'],['reference','shot']]};
 const initial:Doc={version:1,cards:[],links:[]};
 const key='studio.infinite-canvas.v1';
-function valid(v:unknown):v is Doc{const d=v as Doc;return !!d&&d.version===1&&Array.isArray(d.cards)&&d.cards.length<=80&&d.cards.every(c=>c&&typeof c.id==='string'&&c.id.length<100&&['text','image','prompt'].includes(c.kind)&&typeof c.title==='string'&&c.title.length<=200&&typeof c.text==='string'&&c.text.length<=10000&&Number.isFinite(c.x)&&Number.isFinite(c.y)&&Math.abs(c.x)<100000&&Math.abs(c.y)<100000&& (c.width===undefined||(Number.isFinite(c.width)&&c.width>=260&&c.width<=1200))&&(c.height===undefined||(Number.isFinite(c.height)&&c.height>=300&&c.height<=1200))&&(!c.image||(/^data:image\/(png|jpeg|webp);base64,/.test(c.image)&&c.image.length<3000000)))&&new Set(d.cards.map(c=>c.id)).size===d.cards.length&&Array.isArray(d.links)&&d.links.length<=200&&d.links.every(l=>Array.isArray(l)&&l.length===2&&l[0]!==l[1]&&l.every(id=>d.cards.some(c=>c.id===id)));}
 export default function InfiniteCanvas(){
- const [doc,setDoc]=useState<Doc>(initial),[selected,select]=useState('shot'),[zoom,setZoom]=useState(.8),[pan,setPan]=useState({x:0,y:0}),[tool,setTool]=useState('select'),[past,setPast]=useState<Doc[]>([]),[future,setFuture]=useState<Doc[]>([]),[status,setStatus]=useState('示例项目 · 尚未保存'),[ready,setReady]=useState(false),[email,setEmail]=useState(''),[link,setLink]=useState(''),[menu,setMenu]=useState<{x:number;y:number}|null>(null),[theme,setTheme]=useState<'light'|'dark'>('dark'),[editing,setEditing]=useState('');
+ const [doc,setDoc]=useState<Doc>(initial),[selected,select]=useState('shot'),[zoom,setZoom]=useState(.8),[pan,setPan]=useState({x:0,y:0}),[tool,setTool]=useState('select'),[past,setPast]=useState<Doc[]>([]),[future,setFuture]=useState<Doc[]>([]),[status,setStatus]=useState('示例项目 · 尚未保存'),[ready,setReady]=useState(false),[email,setEmail]=useState(''),[link,setLink]=useState(''),[menu,setMenu]=useState<{x:number;y:number}|null>(null),[theme,setTheme]=useState<'light'|'dark'>('dark'),[editing,setEditing]=useState(''),[refMenu,setRefMenu]=useState(''),[taskFeedback,setTaskFeedback]=useState(''),[composerTarget,setComposerTarget]=useState(''),[pickerRequest,setPickerRequest]=useState(0);
  const file=useRef<HTMLInputElement>(null),json=useRef<HTMLInputElement>(null),viewport=useRef<HTMLDivElement>(null),drag=useRef<{id:string;x:number;y:number;ox:number;oy:number;before:Doc;resize?:boolean}|null>(null);
+ const pickerSequence=useRef(0),agent=useRef<CanvasAgentHandle>(null);
  const active=doc.cards.find(c=>c.id===selected);
- useEffect(()=>{try{const raw=localStorage.getItem(key);if(raw){const d=JSON.parse(raw);if(valid(d)){setDoc(d);setStatus('已恢复本机草稿')}}}catch{setStatus('草稿读取失败，可导入 JSON 恢复')}try{const v=JSON.parse(localStorage.getItem(key+'.view')||'null');if(v&&Number.isFinite(v.zoom)&&v.zoom>=.2&&v.zoom<=2&&Number.isFinite(v.x)&&Number.isFinite(v.y)){setZoom(v.zoom);setPan({x:v.x,y:v.y})}}catch{}try{const t=localStorage.getItem(key+'.theme');setTheme(t==='light'?'light':'dark')}catch{}setReady(true);fetch('/api/account/session').then(r=>r.ok?r.json():null).then(d=>setEmail(d?.user?.email||'')).catch(()=>{});},[]);
+ useEffect(()=>{try{const raw=localStorage.getItem(key);if(raw){const d=parseCanvasDocument(raw);setDoc(d);setStatus('已恢复本机草稿')}}catch{setStatus('草稿读取失败，可导入 JSON 恢复')}try{const v=JSON.parse(localStorage.getItem(key+'.view')||'null');if(v&&Number.isFinite(v.zoom)&&v.zoom>=.2&&v.zoom<=2&&Number.isFinite(v.x)&&Number.isFinite(v.y)){setZoom(v.zoom);setPan({x:v.x,y:v.y})}}catch{}try{const t=localStorage.getItem(key+'.theme');setTheme(t==='light'?'light':'dark')}catch{}setReady(true);fetch('/api/account/session').then(r=>r.ok?r.json():null).then(d=>setEmail(d?.user?.email||'')).catch(()=>{});},[]);
  useEffect(()=>{if(!ready)return;try{localStorage.setItem(key,JSON.stringify(doc));setStatus('已保存到此浏览器')}catch{setStatus('本机空间不足，请导出项目备份')}},[doc,ready]);
  useEffect(()=>{if(ready)try{localStorage.setItem(key+'.view',JSON.stringify({...pan,zoom}))}catch{}},[pan,zoom,ready]);
  useEffect(()=>{const el=viewport.current;if(!el)return;const block=(e:WheelEvent)=>{if(!(e.target as HTMLElement).closest('textarea,input,select'))e.preventDefault()};el.addEventListener('wheel',block,{passive:false});return()=>el.removeEventListener('wheel',block)},[]);
- useEffect(()=>{const keys=(e:KeyboardEvent)=>{if(e.key==='Escape'){setMenu(null);setEditing('');return}if((e.target as HTMLElement).closest('input,textarea,select,[contenteditable]'))return;if((e.ctrlKey||e.metaKey)&&e.key.toLowerCase()==='z'){e.preventDefault();if(e.shiftKey)redo();else undo()}if((e.ctrlKey||e.metaKey)&&e.key.toLowerCase()==='d'){e.preventDefault();duplicate()}};window.addEventListener('keydown',keys);return()=>window.removeEventListener('keydown',keys)});
+ useEffect(()=>{const keys=(e:KeyboardEvent)=>{if(e.key==='Escape'){setMenu(null);setRefMenu('');setEditing('');return}if((e.target as HTMLElement).closest('input,textarea,select,[contenteditable]'))return;if((e.ctrlKey||e.metaKey)&&e.key.toLowerCase()==='z'){e.preventDefault();if(e.shiftKey)redo();else undo()}if((e.ctrlKey||e.metaKey)&&e.key.toLowerCase()==='d'){e.preventDefault();duplicate()}};window.addEventListener('keydown',keys);return()=>window.removeEventListener('keydown',keys)});
  useEffect(()=>{if(ready)try{localStorage.setItem(key+'.theme',theme)}catch{}},[theme,ready]);
  function scaleAt(next:number,cx?:number,cy?:number){const el=viewport.current;if(!el)return;const r=el.getBoundingClientRect(),x=cx===undefined?r.width/2:cx-r.left,y=cy===undefined?r.height/2:cy-r.top;const z=Math.max(.2,Math.min(2,next));setPan({x:x-(x-pan.x)*z/zoom,y:y-(y-pan.y)*z/zoom});setZoom(z)}
  function duplicate(){if(!active||doc.cards.length>=80)return;const id=Array.from(crypto.getRandomValues(new Uint8Array(16)),b=>b.toString(16).padStart(2,'0')).join('');commit({...doc,cards:[...doc.cards,{...active,id,title:active.title.slice(0,197)+' 副本',x:active.x+40,y:active.y+40}]});select(id)}
  function commit(next:Doc){setPast(p=>[...p.slice(-29),doc]);setFuture([]);setDoc(next)}
- function add(kind:Card['kind'],image?:string){if(doc.cards.length>=80){setStatus('最多 80 个节点');return}const id=Array.from(crypto.getRandomValues(new Uint8Array(16)),b=>b.toString(16).padStart(2,'0')).join('');const rect=viewport.current?.getBoundingClientRect();commit({...doc,cards:[...doc.cards,{id,kind,title:kind==='text'?'灵感笔记':kind==='image'?'参考素材':'生成提示词',text:'',x:((menu?.x??(rect?.width||700)/2)-pan.x)/zoom-160,y:((menu?.y??(rect?.height||600)/2)-pan.y)/zoom-100,image}]});select(id)}
- function change(field:'title'|'text',value:string,id=selected){setDoc(d=>({...d,cards:d.cards.map(c=>c.id===id?{...c,[field]:value}:c)}))}
+ function add(kind:Card['kind'],image?:string){if(doc.cards.length>=80){setStatus('最多 80 个节点');return}const id=Array.from(crypto.getRandomValues(new Uint8Array(16)),b=>b.toString(16).padStart(2,'0')).join('');const rect=viewport.current?.getBoundingClientRect();commit({...doc,cards:[...doc.cards,{id,kind,title:kind==='text'?'灵感笔记':kind==='image'?'图片节点':kind==='script'?'脚本生成器':'生成提示词',text:'',x:((menu?.x??(rect?.width||700)/2)-pan.x)/zoom-160,y:((menu?.y??(rect?.height||600)/2)-pan.y)/zoom-100,image}]});select(id)}
+ function change(field:'title'|'text'|'instruction',value:string,id=selected){setDoc(d=>({...d,cards:d.cards.map(c=>c.id===id?{...c,[field]:value}:c)}))}
  function beginEdit(){setPast(p=>[...p.slice(-29),doc]);setFuture([])}
  function undo(){if(!past.length)return;setFuture(f=>[doc,...f]);setDoc(past[past.length-1]);setPast(p=>p.slice(0,-1))}
  function redo(){if(!future.length)return;setPast(p=>[...p,doc]);setDoc(future[0]);setFuture(f=>f.slice(1))}
  function fit(){const el=viewport.current;if(!el||!doc.cards.length)return;const minX=Math.min(...doc.cards.map(c=>c.x)),minY=Math.min(...doc.cards.map(c=>c.y));const w=Math.max(...doc.cards.map(c=>c.x+(c.width||320)))-minX,h=Math.max(...doc.cards.map(c=>c.y+(c.height||350)))-minY;const z=Math.max(.2,Math.min(1,(el.clientWidth-80)/w,(el.clientHeight-100)/h));setZoom(z);setPan({x:(el.clientWidth-w*z)/2-minX*z,y:(el.clientHeight-h*z)/2-minY*z})}
+ function selectNode(id:string){if(id!==selected)setEditing('');select(id)}
+ function editNode(id:string){setPickerRequest(0);setComposerTarget('');select(id);setEditing(id);setMenu(null);setRefMenu('');setTaskFeedback('');setTool('select')}
+ function patchNode(id:string,patch:Partial<Card>){commit({...doc,cards:doc.cards.map(n=>n.id===id?{...n,...patch}:n)})}
+ function derive(source:string,kind:Card['kind'],operation:Card['operation']='generate'){
+  const parent=doc.cards.find(n=>n.id===source);if(!parent)return;
+  const id=Array.from(crypto.getRandomValues(new Uint8Array(16)),b=>b.toString(16).padStart(2,'0')).join('');
+  const title=operation==='upscale'?'图片高清':kind==='script'?'脚本生成器':kind==='image'?'图片节点':'文本节点';
+  try{commit(deriveNode(doc,source,{id,kind,operation,title,text:'',x:parent.x+(parent.width||320)+150,y:parent.y,width:360,height:300}));editNode(id);setComposerTarget(id)}catch(e){setStatus(e instanceof Error?e.message:'无法创建节点')}
+ }
+ function connect(from:string,to:string){try{const next=connectNodes(doc,from,to);if(next!==doc)commit(next);setTaskFeedback('')}catch(e){setTaskFeedback(e instanceof Error?e.message:'无法引用节点')}}
+ function exportTask(id:string){try{const task=agentTask(doc,id),url=URL.createObjectURL(new Blob([JSON.stringify(task,null,2)],{type:'application/json'}));const a=document.createElement('a');a.href=url;a.download=`canvas-task-${id}.json`;a.click();setTimeout(()=>URL.revokeObjectURL(url),1000);setTaskFeedback('Agent 任务已导出')}catch(e){setTaskFeedback(e instanceof Error?e.message:'无法导出任务')}}
  function exportDoc(){const url=URL.createObjectURL(new Blob([JSON.stringify(doc,null,2)],{type:'application/json'}));const a=document.createElement('a');a.href=url;a.download='studio-canvas.json';a.click();setTimeout(()=>URL.revokeObjectURL(url),1000)}
  return <main className={s.app} data-theme={theme}><Head><title>无限画布 · Studio</title><meta name="description" content="在无限画布上组织灵感、参考素材与镜头提示词"/></Head>
- <header className={s.header}><a href="/workspace" className={s.back} aria-label="返回 Studio"><ArrowLeft size={18}/></a><a href="/workspace" className={s.brand}>STUDIO<span>✳</span></a><i/><span className={s.crumb}>工作空间 <ChevronRight size={13}/></span><strong>未命名的灵感宇宙</strong><span className={s.badge}>本机草稿</span><div className={s.spacer}/><button aria-label="切换明暗主题" title={theme==='dark'?'切换浅色模式':'切换深色模式'} onClick={()=>setTheme(t=>t==='dark'?'light':'dark')}>{theme==='dark'?<Sun size={17}/>:<Moon size={17}/>}</button><a href="/account">{email||'登录账户'}</a><button className={s.export} onClick={exportDoc}><Download size={15}/>导出项目</button></header>
+ <header className={s.header}><a href="/workspace" className={s.back} aria-label="返回 Studio"><ArrowLeft size={18}/></a><a href="/workspace" className={s.brand}>STUDIO<span>✳</span></a><i/><span className={s.crumb}>工作空间 <ChevronRight size={13}/></span><strong>未命名的灵感宇宙</strong><span className={s.badge}>本机草稿</span><div className={s.spacer}/><CanvasAgentPanel ref={agent} document={doc} email={email} onLoad={next=>{setDoc(next);setPast([]);setFuture([]);setEditing('');select('')}} onFeedback={setTaskFeedback}/><button aria-label="切换明暗主题" title={theme==='dark'?'切换浅色模式':'切换深色模式'} onClick={()=>setTheme(t=>t==='dark'?'light':'dark')}>{theme==='dark'?<Sun size={17}/>:<Moon size={17}/>}</button><a href="/account">{email||'登录账户'}</a><button className={s.export} onClick={exportDoc}><Download size={15}/>导出项目</button></header>
  <div className={s.workspace}><nav className={s.rail} aria-label="画布工具"><button title="选择工具" aria-label="选择工具" aria-pressed={tool==='select'} onClick={()=>setTool('select')}><MousePointer2/></button><button title="移动画布" aria-label="移动画布" aria-pressed={tool==='hand'} onClick={()=>setTool('hand')}><Hand/></button><hr/><button title="添加笔记" aria-label="添加笔记" onClick={()=>add('text')}><Type/></button><button title="上传图片" aria-label="上传图片" onClick={()=>file.current?.click()}><ImagePlus/></button><button title="添加提示词" aria-label="添加提示词" onClick={()=>add('prompt')}><Sparkles/></button><button title="导入项目" aria-label="导入项目" onClick={()=>json.current?.click()}><Upload/></button><div className={s.spacer}/><span>∞</span></nav>
  <section className={s.canvasArea}>{!doc.cards.length&&<div className={s.startPanel}><span>YOUR NEXT IDEA STARTS HERE</span><h2>给想法，一个无限的空间。</h2><p>双击画布添加节点，或选择一个起点。</p><div><button onClick={()=>add('text')}><Type size={19}/>灵感笔记</button><button onClick={()=>file.current?.click()}><ImagePlus size={19}/>参考图片</button><button onClick={()=>add('prompt')}><Sparkles size={19}/>创作提示词</button></div><button onClick={()=>{commit(example);select('');setPan({x:0,y:0});setZoom(.7)}}>从示例开始 ↗</button><a href="/studio/api" target="_blank" rel="noreferrer">连接你的 coding agent · 接入文档 ↗</a></div>}<div className={s.canvasTitle}><span className={s.eyebrow}>YOUR IDEAS, CONNECTED</span><h1>无限画布<span> / Infinite canvas</span></h1><p>从一个灵感，连接所有可能。</p></div>
- <div className={s.viewport} style={{backgroundPosition:`${pan.x}px ${pan.y}px`,backgroundSize:`${24*zoom*Math.max(1,2**Math.ceil(Math.log2(1/zoom)))}px ${24*zoom*Math.max(1,2**Math.ceil(Math.log2(1/zoom)))}px`}} ref={viewport} onDoubleClick={e=>{if(e.target===e.currentTarget){setMenu(null);add('text')}}} onContextMenu={e=>{e.preventDefault();const id=(e.target as HTMLElement).closest('[data-node-id]')?.getAttribute('data-node-id');select(id||'');setMenu({x:Math.min(e.clientX,window.innerWidth-250),y:Math.min(e.clientY,window.innerHeight-330)})}} onWheel={e=>{const target=e.target as HTMLElement;if(drag.current)return;if(target.closest('textarea,input,select'))return;if(e.ctrlKey||e.metaKey){scaleAt(zoom*Math.exp(-e.deltaY*.002),e.clientX,e.clientY)}else setPan(p=>({x:p.x-e.deltaX,y:p.y-e.deltaY}))}} onPointerDown={e=>{setMenu(null);if(e.target===e.currentTarget)setEditing('');if(e.target===e.currentTarget||(tool==='hand'&&!(e.target as HTMLElement).closest('input,textarea,button,select'))||e.button===1){e.currentTarget.setPointerCapture(e.pointerId);drag.current={id:'pan',x:e.clientX,y:e.clientY,ox:pan.x,oy:pan.y,before:doc}}}} onPointerMove={e=>{const d=drag.current;if(!d)return;if(d.id==='pan')setPan({x:d.ox+e.clientX-d.x,y:d.oy+e.clientY-d.y});else {if(!d.resize&&Math.hypot(e.clientX-d.x,e.clientY-d.y)<4)return;e.currentTarget.setPointerCapture(e.pointerId);setDoc({...d.before,cards:d.before.cards.map(c=>c.id===d.id?(d.resize?{...c,width:Math.max(260,Math.min(1200,d.ox+(e.clientX-d.x)/zoom)),height:Math.max(300,Math.min(1200,d.oy+(e.clientY-d.y)/zoom))}:{...c,x:d.ox+(e.clientX-d.x)/zoom,y:d.oy+(e.clientY-d.y)/zoom}):c)})}}} onPointerUp={e=>{const d=drag.current;if(d?.id==='pan'&&tool==='select'&&Math.hypot(e.clientX-d.x,e.clientY-d.y)<4){select('');setMenu({x:Math.min(e.clientX,window.innerWidth-250),y:Math.min(e.clientY,window.innerHeight-230)})}if(d&&d.id!=='pan'&&doc!==d.before){setPast(p=>[...p.slice(-29),d.before]);setFuture([])}drag.current=null}} onPointerCancel={()=>{if(drag.current?.id!=='pan'&&drag.current)setDoc(drag.current.before);drag.current=null}}>
+ <div className={s.viewport} style={{backgroundPosition:`${pan.x}px ${pan.y}px`,backgroundSize:`${24*zoom*Math.max(1,2**Math.ceil(Math.log2(1/zoom)))}px ${24*zoom*Math.max(1,2**Math.ceil(Math.log2(1/zoom)))}px`}} ref={viewport} onDoubleClick={e=>{if(e.target===e.currentTarget){setMenu(null);add('text')}}} onContextMenu={e=>{e.preventDefault();const id=(e.target as HTMLElement).closest('[data-node-id]')?.getAttribute('data-node-id');select(id||'');setMenu({x:Math.min(e.clientX,window.innerWidth-250),y:Math.min(e.clientY,window.innerHeight-330)})}} onWheel={e=>{const target=e.target as HTMLElement;if(drag.current)return;if(target.closest('textarea,input,select'))return;if(e.ctrlKey||e.metaKey){scaleAt(zoom*Math.exp(-e.deltaY*.002),e.clientX,e.clientY)}else setPan(p=>({x:p.x-e.deltaX,y:p.y-e.deltaY}))}} onPointerDown={e=>{setMenu(null);setRefMenu('');if(e.target===e.currentTarget){setEditing('');select('')};if(e.target===e.currentTarget||(tool==='hand'&&!(e.target as HTMLElement).closest('input,textarea,button,select'))||e.button===1){e.currentTarget.setPointerCapture(e.pointerId);drag.current={id:'pan',x:e.clientX,y:e.clientY,ox:pan.x,oy:pan.y,before:doc}}}} onPointerMove={e=>{const d=drag.current;if(!d)return;if(d.id==='pan')setPan({x:d.ox+e.clientX-d.x,y:d.oy+e.clientY-d.y});else {if(!d.resize&&Math.hypot(e.clientX-d.x,e.clientY-d.y)<4)return;e.currentTarget.setPointerCapture(e.pointerId);setDoc({...d.before,cards:d.before.cards.map(c=>c.id===d.id?(d.resize?{...c,width:Math.max(260,Math.min(1200,d.ox+(e.clientX-d.x)/zoom)),height:Math.max(300,Math.min(1200,d.oy+(e.clientY-d.y)/zoom))}:{...c,x:d.ox+(e.clientX-d.x)/zoom,y:d.oy+(e.clientY-d.y)/zoom}):c)})}}} onPointerUp={e=>{const d=drag.current;if(d?.id==='pan'&&tool==='select'&&Math.hypot(e.clientX-d.x,e.clientY-d.y)<4){select('');setMenu({x:Math.min(e.clientX,window.innerWidth-250),y:Math.min(e.clientY,window.innerHeight-230)})}if(d&&d.id!=='pan'&&doc!==d.before){setPast(p=>[...p.slice(-29),d.before]);setFuture([])}drag.current=null}} onPointerCancel={()=>{if(drag.current?.id!=='pan'&&drag.current)setDoc(drag.current.before);drag.current=null}}>
  <div className={s.world} style={{transform:`translate(${pan.x}px,${pan.y}px) scale(${zoom})`}}><svg className={s.wires} aria-hidden="true">{doc.links.map(([a,b])=>{const from=doc.cards.find(c=>c.id===a),to=doc.cards.find(c=>c.id===b);if(!from||!to)return null;return <path key={a+b} d={`M ${from.x+(from.width||320)} ${from.y+(from.height||350)/2} C ${from.x+(from.width||320)+70} ${from.y+(from.height||350)/2},${to.x-45} ${to.y+(to.height||350)/2},${to.x} ${to.y+(to.height||350)/2}`}/>})}</svg>
- {doc.cards.map(c=><article key={c.id} className={`${s.card} ${selected===c.id?s.selected:''} ${editing===c.id?s.editing:s.preview}`} data-node-id={c.id} style={{left:c.x,top:c.y,width:c.width||320,height:c.height||350}} onPointerDown={e=>{if(editing===c.id||tool==='hand'||e.button!==0||(e.target as HTMLElement).closest('button'))return;e.stopPropagation();setMenu(null);select(c.id);setEditing('');drag.current={id:c.id,x:e.clientX,y:e.clientY,ox:c.x,oy:c.y,before:doc}}} onClick={()=>select(c.id)}><div className={s.cardHead} title="拖动手柄 · 移动工具" aria-label={`移动 ${c.title}`} onPointerDown={e=>{if(tool==='hand'||e.button!==0)return;e.stopPropagation();viewport.current?.setPointerCapture(e.pointerId);select(c.id);drag.current={id:c.id,x:e.clientX,y:e.clientY,ox:c.x,oy:c.y,before:doc}}}><span>{c.kind==='text'?<Type size={15}/>:c.kind==='image'?<ImagePlus size={15}/>:<Sparkles size={15}/>} {c.title}</span><span>⠿</span></div>{c.kind==='image'?<div className={s.image} role="button" tabIndex={0} aria-label={`替换 ${c.title} 图片`} onDoubleClick={e=>{e.stopPropagation();select(c.id);setEditing(c.id);setTool('select');setMenu(null);file.current?.click()}} onKeyDown={e=>{if(e.key==='Enter'||e.key===' '){e.preventDefault();select(c.id);setEditing(c.id);file.current?.click()}}}>{c.image?<img src={c.image} alt={c.title}/>:<><div className={s.landscape}><span>REF.</span><b>光的形状</b><small>LIGHT / SPACE / EMOTION</small></div><span className={s.sample}>双击替换参考图</span></>}</div>:<div className={s.cardBody} onDoubleClick={e=>{e.stopPropagation();if(editing===c.id)return;select(c.id);setEditing(c.id);setTool('select');setMenu(null);const body=e.currentTarget;const name=body.querySelector('input');const field=name&&e.clientY<=name.getBoundingClientRect().bottom?name:body.querySelector('textarea');requestAnimationFrame(()=>field?.focus())}}><span className={s.nodeType}>{c.kind==='prompt'?'PROMPT / 提示词':'NOTE / 灵感笔记'}</span><input readOnly={editing!==c.id} tabIndex={editing===c.id?0:-1} aria-label={`${c.title} 名称`} value={c.title} maxLength={200} onFocus={beginEdit} onChange={e=>change('title',e.target.value,c.id)}/><textarea readOnly={editing!==c.id} tabIndex={editing===c.id?0:-1} aria-label={`${c.title} 内容`} value={c.text} maxLength={10000} placeholder="在工具内直接编辑…" onFocus={beginEdit} onChange={e=>change('text',e.target.value,c.id)}/></div>}{c.kind==='prompt'&&<div className={s.disconnected}>提示词已备好，交给你的 Agent 继续创作。</div>}<footer>{c.kind==='image'?'视觉素材':c.kind==='prompt'?'镜头设计':'创作起点'}<button aria-label={`${editing===c.id?'完成编辑':'编辑'} ${c.title}`} onClick={e=>{e.stopPropagation();select(c.id);setEditing(editing===c.id?'':c.id)}}>{editing===c.id?'完成':'编辑'}</button><button aria-label={`${c.title} 操作`} onClick={e=>{e.stopPropagation();select(c.id);setMenu({x:Math.min(e.clientX,window.innerWidth-250),y:Math.min(e.clientY,window.innerHeight-330)})}}>•••</button></footer><span className={s.inputPort}/><span className={s.outputPort}/><button className={s.resize} aria-label={`调整 ${c.title} 尺寸`} onPointerDown={e=>{e.stopPropagation();viewport.current?.setPointerCapture(e.pointerId);select(c.id);drag.current={id:c.id,x:e.clientX,y:e.clientY,ox:c.width||320,oy:c.height||350,before:doc,resize:true}}}>↘</button></article>)}
+ {doc.cards.map(c=><CanvasNodeView key={c.id} node={c} selected={selected===c.id} editing={editing===c.id&&composerTarget!==c.id} hand={tool==='hand'} onSelect={()=>selectNode(c.id)} onChooseReference={()=>{editNode(c.id);setComposerTarget(c.id);setPickerRequest(++pickerSequence.current)}} onEdit={()=>editNode(c.id)} onDrag={e=>{setMenu(null);if(c.id!==editing)setEditing('');drag.current={id:c.id,x:e.clientX,y:e.clientY,ox:c.x,oy:c.y,before:doc}}} onResize={e=>{viewport.current?.setPointerCapture(e.pointerId);select(c.id);drag.current={id:c.id,x:e.clientX,y:e.clientY,ox:c.width||320,oy:c.height||350,before:doc,resize:true}}} onChange={value=>change('text',value,c.id)} onRename={value=>change('title',value,c.id)} onStyle={style=>patchNode(c.id,{style})} onReference={e=>{select(c.id);setRefMenu(c.id);setMenu({x:Math.min(e.clientX,window.innerWidth-250),y:Math.min(e.clientY,window.innerHeight-230)})}} onMenu={e=>{select(c.id);setRefMenu('');setMenu({x:Math.min(e.clientX,window.innerWidth-250),y:Math.min(e.clientY,window.innerHeight-330)})}} onUpload={()=>{select(c.id);file.current?.click()}} onUpscale={()=>derive(c.id,'image','upscale')} onExpand={()=>patchNode(c.id,{width:Math.min(1200,(c.width||320)*1.5),height:Math.min(1200,(c.height||350)*1.3)})} onBeginEdit={beginEdit}/>)}
+
  </div></div><div className={s.canvasBottom}><span role="status">● {status}</span><div className={s.controls}><button aria-label="撤销" disabled={!past.length} onClick={undo}><Undo2 size={16}/></button><button aria-label="重做" disabled={!future.length} onClick={redo}><Redo2 size={16}/></button><i/><button aria-label="缩小" onClick={()=>scaleAt(zoom-.1)}><Minus size={16}/></button><span>{Math.round(zoom*100)}%</span><button aria-label="放大" onClick={()=>scaleAt(zoom+.1)}><Plus size={16}/></button><button aria-label="适应画布" onClick={fit}><Maximize size={16}/></button></div></div></section>
- {menu&&<div className={s.contextMenu} role="dialog" aria-label="画布操作" style={{left:Math.max(8,menu.x),top:Math.max(8,menu.y)}}><div className={s.menuTitle}>{active?active.title:'添加到画布'}<button aria-label="关闭画布操作" onClick={()=>setMenu(null)}>×</button></div>{active?<><button onClick={duplicate}>复制节点</button><button onClick={()=>{commit({...doc,cards:doc.cards.filter(c=>c.id!==selected),links:doc.links.filter(l=>!l.includes(selected))});select('');setMenu(null)}}>删除节点</button><label>连接到<select value={link} onChange={e=>setLink(e.target.value)}><option value="">选择目标节点</option>{doc.cards.filter(c=>c.id!==selected).map(c=><option key={c.id} value={c.id}>{c.title}</option>)}</select></label><button disabled={!link} onClick={()=>{if(!doc.links.some(l=>l[0]===selected&&l[1]===link))commit({...doc,links:[...doc.links,[selected,link]]});setLink('')}}>连接节点</button>{doc.links.filter(l=>l.includes(selected)).map(([a,b])=><button key={a+b} onClick={()=>commit({...doc,links:doc.links.filter(l=>l[0]!==a||l[1]!==b)})}>断开：{doc.cards.find(c=>c.id===(a===selected?b:a))?.title}</button>)}</>:<><button onClick={()=>{add('text');setMenu(null)}}>添加笔记</button><button onClick={()=>{add('image');setMenu(null)}}>添加图片</button><button onClick={()=>{add('prompt');setMenu(null)}}>添加提示词</button></>}</div>}</div>
+ {menu&&<div className={s.contextMenu} role="dialog" aria-label="画布操作" style={{left:Math.max(8,menu.x),top:Math.max(8,menu.y)}}><div className={s.menuTitle}>{refMenu?'引用该节点生成':active?active.title:'添加到画布'}<button aria-label="关闭画布操作" onClick={()=>setMenu(null)}>×</button></div>{refMenu?<>{(['text','image','script'] as const).map(kind=><button key={kind} onClick={()=>derive(refMenu,kind,kind==='script'?'script':'generate')}>{kind==='text'?'文本':kind==='image'?'图片':'脚本'}</button>)}</>:active?<><button onClick={()=>{editNode(active.id);setComposerTarget(active.id)}}>创作要求</button><button onClick={duplicate}>复制节点</button><button onClick={()=>{commit(removeCanvasNode(doc,selected));select('');setEditing('');setMenu(null)}}>删除节点</button><label>连接到<select value={link} onChange={e=>setLink(e.target.value)}><option value="">选择目标节点</option>{doc.cards.filter(c=>c.id!==selected).map(c=><option key={c.id} value={c.id}>{c.title}</option>)}</select></label><button disabled={!link} onClick={()=>{connect(selected,link);setLink('')}}>连接节点</button>{doc.links.filter(l=>l.includes(selected)).map(([a,b])=><button key={a+b} onClick={()=>commit({...doc,links:doc.links.filter(l=>l[0]!==a||l[1]!==b)})}>断开：{doc.cards.find(c=>c.id===(a===selected?b:a))?.title}</button>)}</>:<><button onClick={()=>{add('text');setMenu(null)}}>添加笔记</button><button onClick={()=>{add('image');setMenu(null)}}>添加图片</button><button onClick={()=>{add('script');setMenu(null)}}>添加脚本</button></>}</div>}</div>
+ {active&&editing===active.id&&(active.kind!=='text'||composerTarget===active.id)&&<CanvasComposer pickerRequest={pickerRequest} key={active.id} node={active} nodes={doc.cards} references={referencedNodes(doc,active.id)} onChange={value=>change('instruction',value,active.id)} onRename={value=>change('title',value,active.id)} onBeginEdit={beginEdit} onUpload={()=>file.current?.click()} onAddReference={id=>connect(id,active.id)} onRemoveReference={id=>commit({...doc,links:doc.links.filter(([from,to])=>from!==id||to!==active.id)})} onQueue={()=>void agent.current?.queue(active.id)} onExport={()=>exportTask(active.id)} onClose={()=>setEditing('')} feedback={taskFeedback}/>}
  <input hidden ref={file} type="file" accept="image/png,image/jpeg,image/webp" onChange={async e=>{const f=e.target.files?.[0];e.target.value='';if(!f)return;if(!['image/png','image/jpeg','image/webp'].includes(f.type)||f.size>2000000){setStatus('请选择 2MB 以内的 PNG、JPEG 或 WebP');return}const reader=new FileReader();reader.onload=()=>{const image=String(reader.result);if(active?.kind==='image')commit({...doc,cards:doc.cards.map(c=>c.id===selected?{...c,image}:c)});else add('image',image)};reader.readAsDataURL(f)}}/>
- <input hidden ref={json} type="file" accept="application/json,.json" onChange={async e=>{const f=e.target.files?.[0];e.target.value='';if(!f)return;try{if(f.size>15000000)throw Error();const d=JSON.parse(await f.text());if(!valid(d))throw Error();commit(d);select(d.cards[0]?.id||'');setPan({x:0,y:0});setStatus('项目已导入')}catch{setStatus('无法导入：项目格式错误或文件过大')}}}/>
+ <input hidden ref={json} type="file" accept="application/json,.json" onChange={async e=>{const f=e.target.files?.[0];e.target.value='';if(!f)return;try{if(f.size>15000000)throw Error();const d=parseCanvasDocument(await f.text());commit(d);select(d.cards[0]?.id||'');setPan({x:0,y:0});setStatus('项目已导入')}catch{setStatus('无法导入：项目格式错误或文件过大')}}}/>
  </main>;
 }
diff --git a/apps/studio/src/styles/canvas-agent.module.css b/apps/studio/src/styles/canvas-agent.module.css
new file mode 100644
index 0000000..482071d
--- /dev/null
+++ b/apps/studio/src/styles/canvas-agent.module.css
@@ -0,0 +1,3 @@
+.root{position:static}.panel{position:absolute;left:0;top:calc(100% + 12px);width:min(390px,calc(100vw - 32px));max-height:75dvh;overflow:auto;padding:20px;border:1px solid #414141;border-radius:16px;background:#242424;color:#ddd;box-shadow:0 15px 70px #0005;z-index:12;display:grid;gap:14px;font-size:12px}.panel header,.actions,.conflict{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}.panel button{font-size:11px!important;padding:7px 10px!important;background:#333!important;color:inherit!important;border:1px solid #555!important}.panel button:disabled{opacity:.45}.panel textarea{width:100%;height:150px;resize:vertical;background:#181818;color:#ddd;border:1px solid #444;border-radius:8px;padding:10px;font:10px/1.7 monospace}.panel p{margin:0;color:#aaa;line-height:1.7}.panel small{color:#aaa;font-size:10px}.panel label{display:grid;gap:8px}.panel select{width:100%;background:#333;color:inherit;padding:8px;border-radius:6px}.panel ul{padding:0;margin:0;list-style:none;display:grid;gap:12px}.panel li{display:grid;gap:5px;border-top:1px solid #444;padding-top:10px}.panel li button{justify-self:start}.panel a{color:inherit!important;text-decoration:underline!important}:global([data-theme=light]) .panel{background:white;color:#333;border-color:#ccc}:global([data-theme=light]) .panel button{background:#f3f3f3!important;border-color:#ddd!important}
+
+:global(header):has(> .root .panel){z-index:12}
diff --git a/apps/studio/src/styles/canvas-composer.module.css b/apps/studio/src/styles/canvas-composer.module.css
new file mode 100644
index 0000000..f9da111
--- /dev/null
+++ b/apps/studio/src/styles/canvas-composer.module.css
@@ -0,0 +1,4 @@
+.composer{position:fixed;z-index:6;left:50%;bottom:92px;transform:translateX(-50%);width:min(900px,calc(100vw - 40px));height:280px;border:1px solid #414141;border-radius:22px;padding:20px 24px;background:#242424;color:#ddd;display:flex;flex-direction:column;box-shadow:0 15px 70px #0003}.composer[data-expanded=true]{height:min(65dvh,650px)}.composer header{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px}.composer header>span,.composer header>div{display:flex;align-items:center;gap:8px}.composer header button,.composer footer button{background:#303030;border-color:#414141;font-size:11px;padding:7px 10px}.composer textarea{display:block;flex:1;min-height:50px;width:100%;resize:none;padding:17px 0;border:0;background:transparent;color:inherit;font:inherit;line-height:1.8;outline:none}.composer footer{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:10px;color:#888}.references{display:flex;gap:10px;padding-top:15px;flex-shrink:0;overflow:auto}.reference{width:70px;height:65px;border:1px solid #555;border-radius:8px;position:relative;display:grid;place-items:center;flex-shrink:0;overflow:hidden;background:#333}.reference img{width:100%;height:100%;object-fit:cover}.reference>span{position:absolute;top:3px;left:4px;background:#151515;color:white;border-radius:50%;padding:1px 4px;font-size:9px}.reference small{position:absolute;bottom:0;width:100%;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;background:#222b;font-size:8px;padding:3px}.reference button{position:absolute;top:1px;right:1px;padding:2px!important;background:#222c!important;border:0!important}.picker{position:absolute;bottom:calc(100% + 10px);left:0;background:#242424;border:1px solid #444;border-radius:14px;padding:10px;max-height:200px;overflow:auto;display:grid;gap:5px;min-width:220px}.picker button{justify-content:flex-start;background:transparent;border:0}.picker>span{font-size:11px;padding:12px}:global([data-theme=light]) .composer,:global([data-theme=light]) .picker{background:#fff;color:#333;border-color:#ccc}:global([data-theme=light]) .composer button{background:#f1f1f1;color:#333;border-color:#ddd}@media(max-width:600px){.composer{width:calc(100vw - 20px);padding:15px;bottom:80px;height:260px;border-radius:16px}.composer header>span{max-width:95px;overflow:hidden;white-space:nowrap;font-size:10px}.composer header button{padding:5px;font-size:10px}.composer header{gap:4px}.composer header>div{gap:4px}}
+.composer header input{width:200px;max-width:25vw;min-width:0;border:0;background:transparent;color:inherit;font:inherit;outline:none}
+
+.composer footer>div{display:flex;gap:8px;flex-shrink:0}@media(max-width:600px){.composer footer>div{gap:4px}.composer footer button{font-size:10px;padding:6px}.composer footer>span{min-width:0}}
diff --git a/apps/studio/src/styles/canvas-node.module.css b/apps/studio/src/styles/canvas-node.module.css
new file mode 100644
index 0000000..0f98852
--- /dev/null
+++ b/apps/studio/src/styles/canvas-node.module.css
@@ -0,0 +1,3 @@
+.node{position:absolute;background:#242424;border:1px solid #414141;border-radius:13px;color:#ddd;pointer-events:auto;touch-action:none;cursor:grab;outline:none}.node[data-selected=true]{border-color:#999}.node[data-editing=true]{border:2px solid #aaa;cursor:default}.title{position:absolute;top:-31px;left:0;right:0;display:flex;gap:7px;align-items:center;height:26px;color:#969696;font-size:12px;white-space:nowrap}.title>span{overflow:hidden;text-overflow:ellipsis}.title>button{margin-left:auto;padding:3px!important;background:transparent!important;border:0!important}.content,.image{height:100%;overflow:hidden;border-radius:12px}.content{padding:25px;white-space:pre-wrap;overflow:auto;scrollbar-width:thin}.content p{margin:0;line-height:1.7;pointer-events:none}.image{position:relative;display:grid;place-items:center}.image img{width:100%;height:100%;object-fit:contain;pointer-events:none;user-select:none;-webkit-user-drag:none}.empty{height:100%;width:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;color:#777}.empty button{background:transparent!important;border:0!important;color:#bbb!important;font-size:12px!important}.node>textarea{width:100%;height:100%;border:0;border-radius:12px;background:transparent;color:inherit;outline:none;resize:none;padding:25px;line-height:1.7;touch-action:auto}.format{position:absolute;bottom:calc(100% + 48px);left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:4px;background:#242424;border:1px solid #444;border-radius:12px;padding:6px;white-space:nowrap;z-index:3}.format input{width:24px;height:24px;padding:0;border:0;background:transparent}.format select{max-width:100px;background:transparent;color:#ddd;border:0;padding:6px}.format button{padding:5px!important;border:0!important;background:transparent!important}.format button[aria-pressed=true]{background:#4b4b4b!important}.reference{position:absolute!important;right:-38px;top:calc(50% - 14px);width:28px;height:28px;border-radius:50%!important;border:1px solid #777!important;padding:2px!important;background:#202020!important;color:#ddd!important}.resize{position:absolute!important;right:3px;bottom:3px;padding:3px!important;border:0!important;background:transparent!important;color:#888!important;cursor:nwse-resize!important}.upscale{position:absolute;bottom:10px;left:10px;font-size:10px!important;background:#242424df!important}.node:focus-visible{outline:2px solid #a6c579;outline-offset:3px}:global([data-theme=light]) .node{background:white;color:#333;border-color:#d0d0d0}:global([data-theme=light]) .node[data-selected=true]{border-color:#555}:global([data-theme=light]) .empty button{color:#555!important}:global([data-theme=light]) .format{background:white;border-color:#ccc}:global([data-theme=light]) .format select{color:#333}
+.title>input{min-width:0;width:100%;border:0!important;background:transparent!important;padding:0!important;color:inherit;font:inherit;outline:none}.title>button{flex-shrink:0}
+.incoming{right:auto!important;left:-38px}
diff --git a/apps/studio/tests/canvas-document.test.mjs b/apps/studio/tests/canvas-document.test.mjs
new file mode 100644
index 0000000..26db818
--- /dev/null
+++ b/apps/studio/tests/canvas-document.test.mjs
@@ -0,0 +1,41 @@
+import test from 'node:test';
+import {readFileSync} from 'node:fs';
+import assert from 'node:assert/strict';
+import {parseCanvasDocument,deriveNode,connectNodes,removeCanvasNode,referencedNodes,agentTask} from '../src/lib/canvas-document.ts';
+const note={id:'brief',kind:'text',title:'创意简报',text:'清晨的城市',x:20,y:50};
+const doc={version:1,cards:[note],links:[]};
+test('existing v1 browser drafts remain readable and untrusted fields are discarded',()=>{
+ assert.deepEqual(parseCanvasDocument(JSON.stringify({...doc,token:'ignored',cards:[{...note,html:'ignored'}]})),doc);
+ for(const bad of [{...doc,cards:[note,note]},{...doc,links:[['brief','missing']]},{...doc,cards:[{...note,image:'https://example.com/x.png'}]},{...doc,cards:[{...note,style:{color:'url(javascript:bad)'}}]}])assert.throws(()=>parseCanvasDocument(bad));
+});
+test('derived image and script nodes preserve directed references across save and restore',()=>{
+ const picture={...note,id:'picture',kind:'image',title:'参考图',image:'data:image/png;base64,AAAA',operation:'generate'};
+ const next=deriveNode(doc,'brief',picture);
+ const restored=parseCanvasDocument(JSON.stringify(deriveNode(next,'picture',{...note,id:'script',kind:'script',operation:'script'})));
+ assert.equal(referencedNodes(restored,'picture')[0].id,'brief');assert.equal(referencedNodes(restored,'script')[0].id,'picture');
+ assert.throws(()=>connectNodes(restored,'script','brief'),/循环/);
+ assert.throws(()=>parseCanvasDocument({...restored,links:[...restored.links,['script','brief']]}),/循环/);
+ const removed=removeCanvasNode(restored,'picture');assert.deepEqual(removed.links,[]);assert.equal(removed.cards.length,2);
+});
+test('agent task captures current referenced content and validates upscale inputs',()=>{
+ const next=deriveNode(doc,'brief',{...note,id:'out',kind:'script',operation:'script'});
+ assert.equal(agentTask(next,'out').references[0].text,'清晨的城市');
+ assert.equal(agentTask(next,'out').result.targetId,'out');
+ assert.throws(()=>agentTask({...next,cards:next.cards.map(n=>n.id==='out'?{...n,operation:'upscale'}:n)},'out'),/引用一张图片/);
+});
+
+test('instructions stay distinct from generated content in agent requests',()=>{
+ const result={...note,id:'script',kind:'script',text:'已有脚本正文',instruction:'改写为六个分镜',operation:'script'};
+ const restored=parseCanvasDocument(JSON.stringify(deriveNode(doc,'brief',result)));
+ assert.equal(agentTask(restored,'script').instruction,'改写为六个分镜');
+ assert.equal(restored.cards.find(n=>n.id==='script').text,'已有脚本正文');
+});
+
+test('editing an image passes the current image to the external agent',()=>{
+ const image={...note,id:'image',kind:'image',instruction:'把背景改为雪夜',image:'data:image/png;base64,AAAA'};
+ assert.equal(agentTask({version:1,cards:[image],links:[]},'image').sourceImage,image.image);
+});
+
+test('agent and browser parse the same canvas document contract',()=>{
+ assert.equal(readFileSync(new URL('../src/lib/canvas-document.ts',import.meta.url),'utf8'),readFileSync(new URL('../../waterfall-wiki/src/lib/canvas-document.ts',import.meta.url),'utf8'));
+});
diff --git a/apps/waterfall-wiki/db/016_canvas_workspace.sql b/apps/waterfall-wiki/db/016_canvas_workspace.sql
new file mode 100644
index 0000000..76c13d2
--- /dev/null
+++ b/apps/waterfall-wiki/db/016_canvas_workspace.sql
@@ -0,0 +1,23 @@
+BEGIN;
+CREATE TABLE canvas_documents (
+ id uuid PRIMARY KEY, owner_id uuid NOT NULL REFERENCES account_users(id) ON DELETE CASCADE,
+ name text NOT NULL DEFAULT '未命名画布' CHECK(length(name) BETWEEN 1 AND 200),
+ revision integer NOT NULL DEFAULT 1 CHECK(revision>0), document_key text NOT NULL,
+ updated_at timestamptz NOT NULL DEFAULT now()
+);
+CREATE INDEX canvas_owner_updated ON canvas_documents(owner_id,updated_at DESC);
+CREATE TABLE canvas_agent_links (
+ digest text PRIMARY KEY, canvas_id uuid NOT NULL REFERENCES canvas_documents(id) ON DELETE CASCADE,
+ expires_at timestamptz NOT NULL, last_seen_at timestamptz
+);
+CREATE INDEX canvas_link_expiry ON canvas_agent_links(canvas_id,expires_at);
+CREATE TABLE canvas_tasks (
+ id uuid PRIMARY KEY, canvas_id uuid NOT NULL REFERENCES canvas_documents(id) ON DELETE CASCADE,
+ target_id text NOT NULL, source_revision integer NOT NULL,
+ status text NOT NULL DEFAULT 'queued' CHECK(status IN ('queued','running','succeeded','failed')),
+ request_key text NOT NULL, result_digest text, error text,
+ created_at timestamptz NOT NULL DEFAULT now(), updated_at timestamptz NOT NULL DEFAULT now()
+);
+CREATE UNIQUE INDEX canvas_target_active_task ON canvas_tasks(canvas_id,target_id) WHERE status IN ('queued','running');
+INSERT INTO schema_migrations(version) VALUES ('016_canvas_workspace');
+COMMIT;
diff --git a/apps/waterfall-wiki/src/lib/api-documentation.ts b/apps/waterfall-wiki/src/lib/api-documentation.ts
index 342bf7e..da49d07 100644
--- a/apps/waterfall-wiki/src/lib/api-documentation.ts
+++ b/apps/waterfall-wiki/src/lib/api-documentation.ts
@@ -2,6 +2,14 @@ import type {NextApiRequest,NextApiResponse} from 'next';
 
 // Read documentation before business validation or storage access. Mutations never enter this branch.
 export const apiDocuments:Record<string,readonly string[]>={
+ "/api/canvases/{...path}": [
+  "在线画布与 coding agent", "GET, POST, PUT, PATCH, DELETE",
+  "参数：POST /api/canvases {name?,document} 创建本人画布；GET 列出本人画布。GET /api/canvases/{id} 返回 document、revision 和 tasks；PUT {revision,document} 更新，冲突返回 409。所有者使用已验证邮箱会话，写入要求同源 Origin。",
+  "连接：所有者 POST /api/canvases/{id}/link 创建仅限此画布、有效一小时的 token（只返回一次，旧 token 同时撤销）。Agent 使用 Authorization: Bearer <token>。DELETE 同一路径并发送 {} 撤销；GET 读取 expiresAt/lastSeenAt。不要将 token 放入 URL、日志或作品中。",
+  "任务：POST /api/canvases/{id}/tasks {revision,targetId} 保存当前引用和指令快照；GET /api/canvases/{id}/tasks/{taskId} 读取 request（instruction、references、可选 sourceImage）。PATCH 先发送 {status:running} 领取任务，执行实际生成后发送 {status:succeeded,result:{text?,image?}}，或 {status:failed,error:原因}。image 仅允许嵌入式 PNG/JPEG/WebP data URL（小于 3MB）；正文最多 10000 字符。结果只写回该任务的目标节点，不能改写节点标识和引用。",
+  "返回：任务状态 queued/running/succeeded/failed，画布版本为正整数。任务期间画布变动则结果回写返回 409，先读取新画布并重新派发任务；相同成功结果重复提交幂等。请求快照和画布内容保存在 S3；访问凭据仅在数据库保存摘要。",
+  "401 未登录；403 来源或权限不足；404 画布/任务不存在或不可访问；409 版本/任务冲突；413 文件过大；503 服务不可用。"
+ ],
   "/api/posts/{id}/archive": [
     "归档或恢复笔记", "POST",
     "路径参数 id 为存储 UUID 或24位 publicId。JSON 参数：{archived:true} 归档，{archived:false} 恢复。重复调用幂等，不删除 post、正文、媒体、标签或页面记录。",
diff --git a/apps/waterfall-wiki/src/lib/canvas-document.ts b/apps/waterfall-wiki/src/lib/canvas-document.ts
new file mode 100644
index 0000000..f7f55da
--- /dev/null
+++ b/apps/waterfall-wiki/src/lib/canvas-document.ts
@@ -0,0 +1,72 @@
+export type NodeKind = 'text' | 'image' | 'prompt' | 'script';
+export type TextStyle = {bold?:boolean;italic?:boolean;color?:string;size?:number};
+export type CanvasNode = {
+ id:string;kind:NodeKind;title:string;text:string;x:number;y:number;
+ image?:string;width?:number;height?:number;style?:TextStyle;
+ instruction?:string;
+ operation?:'generate'|'upscale'|'script';
+};
+export type CanvasDocument = {version:1;cards:CanvasNode[];links:[string,string][]};
+const kinds:NodeKind[]=['text','image','prompt','script'];
+const object=(v:unknown):v is Record<string,unknown>=>!!v&&typeof v==='object'&&!Array.isArray(v);
+const bounded=(v:unknown,min:number,max:number)=>typeof v==='number'&&Number.isFinite(v)&&v>=min&&v<=max;
+const text=(v:unknown,max:number)=>typeof v==='string'&&v.length<=max;
+const image=(v:unknown)=>typeof v==='string'&&v.length<3000000&&/^data:image\/(png|jpeg|webp);base64,[A-Za-z0-9+/=]+$/.test(v);
+
+export function parseCanvasDocument(value:unknown):CanvasDocument {
+ const d=typeof value==='string'?JSON.parse(value):value;
+ if(!object(d)||d.version!==1||!Array.isArray(d.cards)||d.cards.length>80||!Array.isArray(d.links)||d.links.length>200)throw Error('画布格式不正确');
+ const ids=new Set<string>();
+ const cards:CanvasNode[]=d.cards.map((n:unknown)=>{
+  if(!object(n)||!text(n.id,100)||!n.id||ids.has(n.id as string)||!kinds.includes(n.kind as NodeKind)||!text(n.title,200)||!text(n.text,10000)||!bounded(n.x,-100000,100000)||!bounded(n.y,-100000,100000))throw Error('节点格式不正确');
+  if(n.width!==undefined&&!bounded(n.width,180,1200)||n.height!==undefined&&!bounded(n.height,160,1200)||n.image!==undefined&&!image(n.image))throw Error('节点尺寸或图片不正确');
+  if(n.instruction!==undefined&&!text(n.instruction,10000))throw Error('创作要求格式不正确');
+  if(n.operation!==undefined&&!['generate','upscale','script'].includes(n.operation as string))throw Error('生成任务类型不正确');
+  let style:TextStyle|undefined;
+  if(n.style!==undefined){
+   if(!object(n.style)||n.style.bold!==undefined&&typeof n.style.bold!=='boolean'||n.style.italic!==undefined&&typeof n.style.italic!=='boolean'||n.style.color!==undefined&&(typeof n.style.color!=='string'||!/^#[a-f\d]{6}$/i.test(n.style.color))||n.style.size!==undefined&&!bounded(n.style.size,10,72))throw Error('文字样式不正确');
+   style={...(n.style.bold===undefined?{}:{bold:n.style.bold as boolean}),...(n.style.italic===undefined?{}:{italic:n.style.italic as boolean}),...(n.style.color===undefined?{}:{color:n.style.color as string}),...(n.style.size===undefined?{}:{size:n.style.size as number})};
+  }
+  ids.add(n.id as string);
+  return {id:n.id as string,kind:n.kind as NodeKind,title:n.title as string,text:n.text as string,x:n.x as number,y:n.y as number,...(n.width===undefined?{}:{width:n.width as number}),...(n.height===undefined?{}:{height:n.height as number}),...(n.image===undefined?{}:{image:n.image as string}),...(style?{style}:{}),...(n.instruction===undefined?{}:{instruction:n.instruction as string}),...(n.operation===undefined?{}:{operation:n.operation as CanvasNode['operation']})};
+ });
+ const pairs=new Set<string>();
+ const links:[string,string][]=d.links.map((l:unknown)=>{
+  if(!Array.isArray(l)||l.length!==2||l[0]===l[1]||!l.every(id=>typeof id==='string'&&ids.has(id)))throw Error('引用节点不存在');
+  const key=JSON.stringify(l);if(pairs.has(key))throw Error('引用重复');pairs.add(key);return [l[0],l[1]];
+ });
+ const outgoing=new Map<string,string[]>(),indegree=new Map(cards.map(n=>[n.id,0]));
+ for(const [from,to] of links){outgoing.set(from,[...(outgoing.get(from)||[]),to]);indegree.set(to,indegree.get(to)!+1)}
+ const roots=cards.filter(n=>indegree.get(n.id)===0).map(n=>n.id);let visited=0;
+ while(roots.length){const id=roots.pop()!;visited++;for(const to of outgoing.get(id)||[]){const count=indegree.get(to)!-1;indegree.set(to,count);if(!count)roots.push(to)}}
+ if(visited!==cards.length)throw Error('引用不能形成循环');
+ return {version:1,cards,links};
+}
+
+export function referencedNodes(doc:CanvasDocument,target:string):CanvasNode[]{
+ return doc.links.filter(([,to])=>to===target).map(([from])=>doc.cards.find(n=>n.id===from)!).filter(Boolean);
+}
+export function connectNodes(doc:CanvasDocument,from:string,to:string):CanvasDocument {
+ if(from===to||![from,to].every(id=>doc.cards.some(n=>n.id===id)))throw Error('请选择不同的有效节点');
+ if(doc.links.some(([a,b])=>a===from&&b===to))return doc;
+ if(doc.links.length>=200)throw Error('最多 200 条引用');
+ const seen=new Set<string>();const pending=[to];
+ while(pending.length){const id=pending.pop()!;if(id===from)throw Error('引用不能形成循环');if(seen.has(id))continue;seen.add(id);pending.push(...doc.links.filter(([a])=>a===id).map(([,b])=>b));}
+ return {...doc,links:[...doc.links,[from,to]]};
+}
+export function removeCanvasNode(doc:CanvasDocument,id:string):CanvasDocument {
+ return {...doc,cards:doc.cards.filter(n=>n.id!==id),links:doc.links.filter(l=>!l.includes(id))};
+}
+export function deriveNode(doc:CanvasDocument,source:string,node:CanvasNode):CanvasDocument {
+ if(doc.cards.length>=80||doc.cards.some(n=>n.id===node.id))throw Error('节点数量或标识不正确');
+ const result=connectNodes({...doc,cards:[...doc.cards,node]},source,node.id);
+ return parseCanvasDocument(result);
+}
+export function agentTask(doc:CanvasDocument,id:string){
+ const node=doc.cards.find(n=>n.id===id);if(!node)throw Error('目标节点不存在');
+ const instruction=node.instruction??node.text;
+ if(!instruction.trim()&&node.operation!=='upscale')throw Error('请先填写创作要求');
+ const references=referencedNodes(doc,id);
+ if(node.operation==='upscale'&&!references.some(n=>n.kind==='image'&&n.image))throw Error('请先引用一张图片');
+ return {schema:'studio.canvas-task/1',target:{id:node.id,kind:node.kind,title:node.title},operation:node.operation||'generate',instruction,...(node.image?{sourceImage:node.image}:{}),references:references.map(n=>({id:n.id,kind:n.kind,title:n.title,text:n.text,...(n.image?{image:n.image}:{}),...(n.style?{style:n.style}:{})})),result:{targetId:node.id,allowedFields:node.kind==='image'?['image','text']:['text']}};
+}
diff --git a/apps/waterfall-wiki/src/lib/canvas-store.ts b/apps/waterfall-wiki/src/lib/canvas-store.ts
new file mode 100644
index 0000000..8067e18
--- /dev/null
+++ b/apps/waterfall-wiki/src/lib/canvas-store.ts
@@ -0,0 +1,81 @@
+import {randomUUID,createHash} from 'node:crypto';
+import {PutObjectCommand} from '@aws-sdk/client-s3';
+import {db,transaction} from './db';
+import {storage,bucket,getObject,removeObject} from './storage';
+import {newToken,tokenDigest} from './account-crypto';
+import {parseCanvasDocument,agentTask,type CanvasDocument} from './canvas-document';
+export class CanvasError extends Error { constructor(public status:number,message:string){super(message)} }
+const inputDocument=(input:unknown)=>{try{return parseCanvasDocument(input)}catch{throw new CanvasError(400,'画布或结果参数无效')}};
+export const uuid=(v:unknown):v is string=>typeof v==='string'&&/^[a-f\d]{8}-[a-f\d]{4}-[a-f\d]{4}-[a-f\d]{4}-[a-f\d]{12}$/i.test(v);
+export const revision=(v:unknown):v is number=>typeof v==='number'&&Number.isSafeInteger(v)&&v>0&&v<2147483647;
+export async function readCanvasBody(key:string):Promise<CanvasDocument>{const o=await getObject(key);return parseCanvasDocument(await o.Body!.transformToString())}
+async function putJson(canvas:string,value:unknown){const key=`canvases/${canvas}/${randomUUID()}.json`,body=JSON.stringify(value);if(Buffer.byteLength(body)>15000000)throw new CanvasError(413,'画布不能超过 15MB');await storage().send(new PutObjectCommand({Bucket:bucket(),Key:key,Body:body,ContentType:'application/json'}));return key}
+export async function authorizeCanvas(id:string,owner:string|null,bearer:string|null){
+ const record=await db().query('SELECT * FROM canvas_documents WHERE id=$1',[id]);const doc=record.rows[0];
+ if(!doc)throw new CanvasError(404,'画布不存在');
+ if(owner===doc.owner_id)return doc;
+ if(bearer&&/^[a-f\d]{64}$/.test(bearer)){
+  const auth=await db().query('UPDATE canvas_agent_links SET last_seen_at=now() WHERE canvas_id=$1 AND digest=$2 AND expires_at>now() RETURNING canvas_id',[id,tokenDigest(bearer)]);
+  if(auth.rowCount)return doc;
+ }
+ throw new CanvasError(404,'画布不存在或无访问权限');
+}
+export async function canvasState(record:{id:string;revision:number;name:string;document_key:string}){
+ const tasks=await db().query('SELECT id,target_id AS "targetId",status,error,source_revision AS "sourceRevision",created_at AS "createdAt" FROM canvas_tasks WHERE canvas_id=$1 ORDER BY created_at DESC LIMIT 80',[record.id]);
+ return {id:record.id,name:record.name,revision:record.revision,document:await readCanvasBody(record.document_key),tasks:tasks.rows};
+}
+export async function createCanvas(owner:string,input:unknown,name='未命名画布'){
+ if(typeof name!=='string'||!name.trim()||name.length>200)throw new CanvasError(400,'画布名称无效');
+ const document=inputDocument(input),id=randomUUID(),key=await putJson(id,document);
+ try{const r=await db().query('INSERT INTO canvas_documents(id,owner_id,name,document_key) VALUES($1,$2,$3,$4) RETURNING *',[id,owner,name.trim(),key]);return canvasState(r.rows[0])}catch(e){await removeObject(key).catch(()=>{});throw e}
+}
+export async function saveCanvas(id:string,expected:number,input:unknown){
+ if(!revision(expected))throw new CanvasError(400,'版本无效');const document=inputDocument(input),key=await putJson(id,document);
+ try{return await transaction(async client=>{const r=await client.query('UPDATE canvas_documents SET document_key=$3,revision=revision+1,updated_at=now() WHERE id=$1 AND revision=$2 RETURNING *',[id,expected,key]);if(!r.rowCount)throw new CanvasError(409,'在线画布已有更新，请先读取新版本');return r.rows[0]})}catch(e){await removeObject(key).catch(()=>{});throw e}
+}
+export async function createCanvasLink(id:string){
+ const token=newToken(),expiresAt=new Date(Date.now()+3600000).toISOString();
+ await transaction(async client=>{await client.query('SELECT id FROM canvas_documents WHERE id=$1 FOR UPDATE',[id]);await client.query('DELETE FROM canvas_agent_links WHERE canvas_id=$1',[id]);await client.query('INSERT INTO canvas_agent_links(digest,canvas_id,expires_at) VALUES($1,$2,$3)',[tokenDigest(token),id,expiresAt])});
+ return {token,expiresAt};
+}
+export async function queueCanvasTask(id:string,expected:number,target:string){
+ if(!revision(expected)||typeof target!=='string'||target.length>100)throw new CanvasError(400,'任务参数无效');
+ let key:string|undefined;
+ try{return await transaction(async client=>{
+  const row=(await client.query('SELECT * FROM canvas_documents WHERE id=$1 FOR UPDATE',[id])).rows[0];if(!row)throw new CanvasError(404,'画布不存在');if(row.revision!==expected)throw new CanvasError(409,'画布已有更新，请先同步');
+  const body=await readCanvasBody(row.document_key);let request;try{request=agentTask(body,target)}catch(e){throw new CanvasError(400,e instanceof Error?e.message:'创作要求无效')}key=await putJson(id,request);
+  const result=await client.query('INSERT INTO canvas_tasks(id,canvas_id,target_id,source_revision,request_key) VALUES($1,$2,$3,$4,$5) RETURNING id,status,target_id AS "targetId"',[randomUUID(),id,target,expected,key]);return result.rows[0];
+ })}catch(e){if(key)await removeObject(key).catch(()=>{});if((e as {code?:string}).code==='23505')throw new CanvasError(409,'该节点已有待处理任务');throw e}
+}
+export async function readCanvasTask(id:string,task:string){
+ const r=await db().query('SELECT * FROM canvas_tasks WHERE canvas_id=$1 AND id=$2',[id,task]);if(!r.rowCount)throw new CanvasError(404,'任务不存在');const row=r.rows[0],o=await getObject(row.request_key);return {id:row.id,targetId:row.target_id,status:row.status,sourceRevision:row.source_revision,error:row.error,request:JSON.parse(await o.Body!.transformToString())};
+}
+export async function updateCanvasTask(id:string,task:string,input:{status?:unknown;result?:unknown;error?:unknown}){
+ let key:string|undefined;
+ try{return await transaction(async client=>{
+  const record=(await client.query('SELECT * FROM canvas_documents WHERE id=$1 FOR UPDATE',[id])).rows[0];
+  const row=(await client.query('SELECT * FROM canvas_tasks WHERE canvas_id=$1 AND id=$2 FOR UPDATE',[id,task])).rows[0];
+  if(!record||!row)throw new CanvasError(404,'任务不存在');
+  if(input.status==='running'){
+   if(!['queued','running'].includes(row.status))throw new CanvasError(409,'任务已经结束');
+   await client.query("UPDATE canvas_tasks SET status='running',updated_at=now() WHERE id=$1",[task]);return {id:task,status:'running',revision:record.revision};
+  }
+  if(input.status==='failed'){
+   if(!['queued','running'].includes(row.status))throw new CanvasError(409,'任务已经结束');
+   if(typeof input.error!=='string'||!input.error.trim()||input.error.length>1000)throw new CanvasError(400,'请提供任务失败原因');
+   await client.query("UPDATE canvas_tasks SET status='failed',error=$2,updated_at=now() WHERE id=$1",[task,input.error]);return {id:task,status:'failed',revision:record.revision};
+  }
+  if(input.status!=='succeeded'||!input.result||typeof input.result!=='object'||Array.isArray(input.result))throw new CanvasError(400,'任务更新格式不正确');
+  const result=input.result as {text?:unknown;image?:unknown};
+  if(result.text===undefined&&result.image===undefined)throw new CanvasError(400,'没有返回结果');
+  const digest=createHash('sha256').update(JSON.stringify({text:result.text,image:result.image})).digest('hex');
+  if(row.status==='succeeded'&&row.result_digest===digest)return {id:task,status:'succeeded',revision:record.revision};
+  if(row.status!=='running')throw new CanvasError(409,'请先领取任务，已结束的任务不能改写');
+  if(record.revision!==row.source_revision)throw new CanvasError(409,'画布在任务创建后已修改，请重新派发任务');
+  const doc=await readCanvasBody(record.document_key),node=doc.cards.find(n=>n.id===row.target_id);if(!node)throw new CanvasError(409,'目标节点已移除');
+  if(result.image!==undefined&&node.kind!=='image')throw new CanvasError(400,'该节点不接收图片结果');
+  const next=inputDocument({...doc,cards:doc.cards.map(n=>n.id===node.id?{...n,...(result.text===undefined?{}:{text:result.text}),...(result.image===undefined?{}:{image:result.image})}:n)});
+  key=await putJson(id,next);await client.query('UPDATE canvas_documents SET document_key=$2,revision=revision+1,updated_at=now() WHERE id=$1',[id,key]);
+  await client.query("UPDATE canvas_tasks SET status='succeeded',result_digest=$2,error=NULL,updated_at=now() WHERE id=$1",[task,digest]);return {id:task,status:'succeeded',revision:record.revision+1};
+ })}catch(e){if(key)await removeObject(key).catch(()=>{});throw e}
+}
diff --git a/apps/waterfall-wiki/src/pages/api/canvases/[[...path]].ts b/apps/waterfall-wiki/src/pages/api/canvases/[[...path]].ts
new file mode 100644
index 0000000..a72b687
--- /dev/null
+++ b/apps/waterfall-wiki/src/pages/api/canvases/[[...path]].ts
@@ -0,0 +1,55 @@
+import type {NextApiRequest,NextApiResponse} from 'next';
+import {serveApiDocumentation} from '@/lib/api-documentation';
+import {currentAccount} from '@/lib/account';
+import {trustedOrigin} from '@/lib/account-crypto';
+import {db} from '@/lib/db';
+import {CanvasError,uuid,authorizeCanvas,canvasState,createCanvas,saveCanvas,createCanvasLink,queueCanvasTask,readCanvasTask,updateCanvasTask} from '@/lib/canvas-store';
+export const config={api:{bodyParser:{sizeLimit:'15mb'}}};
+export default async function handler(req:NextApiRequest,res:NextApiResponse){
+ if(serveApiDocumentation(req,res,'/api/canvases/{...path}'))return;
+ res.setHeader('Cache-Control','private, no-store');res.setHeader('Referrer-Policy','no-referrer');
+ const path=req.query.path||[];if(!Array.isArray(path)||path.length>3)return res.status(404).end();
+ const [id,section,taskId]=path;
+ if(id&&!uuid(id)||taskId&&!uuid(taskId))return res.status(404).end();
+ if(!['GET','POST','PUT','PATCH','DELETE'].includes(req.method||'')){res.setHeader('Allow','GET, POST, PUT, PATCH, DELETE');return res.status(405).end()}
+ const input=req.body;
+ if(req.method!=='GET'&&(!input||typeof input!=='object'||Array.isArray(input)))return res.status(400).json({error:'请发送 JSON 对象'});
+ try{
+  const headers=new Headers(Object.entries(req.headers).filter(([,v])=>typeof v==='string') as [string,string][]);
+  const request=new Request(new URL(req.url||'/',process.env.ACCOUNT_PUBLIC_ORIGIN||'http://'+req.headers.host),{headers});
+  const bearer=req.headers.authorization?.startsWith('Bearer ')?req.headers.authorization.slice(7):null;
+  if(bearer&&req.headers['sec-fetch-site']==='cross-site')throw new CanvasError(403,'请求来源不受信任');
+  if(!bearer&&req.method!=='GET'&&!trustedOrigin(request))throw new CanvasError(403,'请求来源不受信任');
+  const user=bearer?null:await currentAccount(request);
+  if(!id){
+   if(!user)throw new CanvasError(401,'请先登录邮箱账户');
+   if(req.method==='GET'){const rows=await db().query('SELECT id,name,revision,updated_at AS "updatedAt" FROM canvas_documents WHERE owner_id=$1 ORDER BY updated_at DESC LIMIT 100',[user.id]);return res.json({canvases:rows.rows})}
+   if(req.method==='POST')return res.status(201).json(await createCanvas(user.id,input.document,input.name));
+   return res.status(405).end();
+  }
+  const record=await authorizeCanvas(id,user?.id||null,bearer);
+  if(!section){
+   if(req.method==='GET')return res.json(await canvasState(record));
+   if(req.method==='PUT')return res.json(await canvasState(await saveCanvas(id,input.revision,input.document)));
+   return res.status(405).end();
+  }
+  if(section==='link'&&!taskId){
+   if(!user||user.id!==record.owner_id)throw new CanvasError(403,'只有画布所有者可以管理 Agent 连接');
+   if(req.method==='POST')return res.status(201).json({...await createCanvasLink(id),canvasId:id,documentation:`/api/canvases/${id}?agent_mode=True`});
+   if(req.method==='DELETE'){await db().query('DELETE FROM canvas_agent_links WHERE canvas_id=$1',[id]);return res.json({revoked:true})}
+   if(req.method==='GET'){const r=await db().query('SELECT expires_at AS "expiresAt",last_seen_at AS "lastSeenAt" FROM canvas_agent_links WHERE canvas_id=$1 AND expires_at>now() ORDER BY expires_at DESC LIMIT 1',[id]);return res.json({link:r.rows[0]||null})}
+   return res.status(405).end();
+  }
+  if(section==='tasks'){
+   if(!taskId&&req.method==='POST')return res.status(201).json(await queueCanvasTask(id,input.revision,input.targetId));
+   if(taskId&&req.method==='GET')return res.json(await readCanvasTask(id,taskId));
+   if(taskId&&req.method==='PATCH')return res.json(await updateCanvasTask(id,taskId,input));
+   return res.status(405).end();
+  }
+  return res.status(404).end();
+ }catch(e){
+  if(e instanceof CanvasError)return res.status(e.status).json({error:e.message});
+  if(e instanceof SyntaxError||e instanceof Error&&/格式|节点|引用|创作要求|图片|画布不能/.test(e.message))return res.status(400).json({error:'画布或任务参数无效'});
+  return res.status(503).json({error:'在线画布暂时不可用'});
+ }
+}
diff --git a/apps/waterfall-wiki/src/proxy.ts b/apps/waterfall-wiki/src/proxy.ts
index 1dea998..113de46 100644
--- a/apps/waterfall-wiki/src/proxy.ts
+++ b/apps/waterfall-wiki/src/proxy.ts
@@ -5,7 +5,7 @@ export function proxy(request: NextRequest) {
  const responseHeaders = {'Cache-Control':'private, no-store', 'Referrer-Policy':'same-origin'};
  // Public knowledge pages are read-only. Account handlers enforce their own origin and session checks.
  const publicRead = ['GET','HEAD'].includes(request.method) && (path === '/' || ['/workspace','/graphic','/infinite_canvas','/studio','/studio/graphic','/studio/infinite_canvas','/studio/api'].includes(path) || path.startsWith('/studio/_next/') || path === '/protocol' || ['/llms.txt','/index.md','/agent','/agent/index.md','/api/agent-index','/api/guides'].includes(path) || path.startsWith('/guide/') || path.startsWith('/api/guides/'));
- if (path === '/write' || path === '/documents' || path.startsWith('/documents/') || path === '/api/documents' || path.startsWith('/api/documents/') || publicRead || path === '/account' || path.startsWith('/api/account/')) return NextResponse.next({headers:{...responseHeaders,'Referrer-Policy':'no-referrer'}});
+ if (path === '/api/canvases' || path.startsWith('/api/canvases/') || path === '/write' || path === '/documents' || path.startsWith('/documents/') || path === '/api/documents' || path.startsWith('/api/documents/') || publicRead || path === '/account' || path.startsWith('/api/account/')) return NextResponse.next({headers:{...responseHeaders,'Referrer-Policy':'no-referrer'}});
  if (path === '/brand-mark.svg' || path === '/login' || path === '/api/auth/login' || path === '/api/auth/logout' || path === '/api/health' || path === '/api/ready' || path.startsWith('/_next/static/')) return NextResponse.next({headers:responseHeaders});
  let config;
  try { config = authConfig(); } catch { return NextResponse.json({error:'登录服务配置不可用'}, {status:503,headers:responseHeaders}); }
diff --git a/apps/waterfall-wiki/tests/api-documentation.test.ts b/apps/waterfall-wiki/tests/api-documentation.test.ts
index c0c12ca..6183ec4 100644
--- a/apps/waterfall-wiki/tests/api-documentation.test.ts
+++ b/apps/waterfall-wiki/tests/api-documentation.test.ts
@@ -13,7 +13,7 @@ const request=(method:string,agent_mode:unknown)=>({method,query:{agent_mode}} a
 
 test('every business handler serves documentation before validating parameters or accessing dependencies',async()=>{
  const routes:Record<string,string>={
- '/api/explore-feed':'explore-feed','/api/feed':'feed','/api/notes/{id}':'notes/[id]',
+ '/api/canvases/{...path}':'canvases/[[...path]]','/api/explore-feed':'explore-feed','/api/feed':'feed','/api/notes/{id}':'notes/[id]',
  '/api/posts/{id}/archive':'posts/[id]/archive','/api/posts':'posts/index','/api/tags':'tags','/api/upload':'upload',
  '/api/media/{id}':'media/[id]','/api/preview':'preview',
  '/api/skills/street-people':'skills/street-people','/api/health':'health','/api/ready':'ready',
diff --git a/apps/waterfall-wiki/tests/canvas-integration.ts b/apps/waterfall-wiki/tests/canvas-integration.ts
new file mode 100644
index 0000000..352a937
--- /dev/null
+++ b/apps/waterfall-wiki/tests/canvas-integration.ts
@@ -0,0 +1,87 @@
+import assert from 'node:assert/strict';
+import {randomUUID} from 'node:crypto';
+import {db} from '../src/lib/db';
+import {newToken,tokenDigest,ACCOUNT_COOKIE} from '../src/lib/account-crypto';
+import type {CanvasDocument} from '../src/lib/canvas-document';
+export async function verifyCanvasWorkspace(base:string){
+ const identities=await Promise.all([0,1].map(async()=>{const id=randomUUID(),token=newToken();await db().query("INSERT INTO account_users(id,email,password_hash,verified_at) VALUES($1,$2,'test',now())",[id,id+'@example.com']);await db().query("INSERT INTO account_tokens(digest,user_id,kind,expires_at) VALUES($1,$2,'session',now()+interval '1 hour')",[tokenDigest(token),id]);return {[`cookie`]:ACCOUNT_COOKIE+'='+token}}));
+ const origin=process.env.ACCOUNT_PUBLIC_ORIGIN||base;
+ const call=(path:string,method='GET',body?:unknown,headers:Record<string,string>={})=>fetch(base+'/api/canvases'+path,{method,headers:{'Content-Type':'application/json',origin,...headers},...(body===undefined?{}:{body:JSON.stringify(body)})});
+ const doc={version:1,cards:[{id:'note',kind:'text',title:'简报',text:'自然光与城市清晨',x:0,y:0},{id:'script',kind:'script',title:'脚本',text:'',instruction:'写六个分镜',operation:'script',x:500,y:0}],links:[['note','script']]};
+ assert.equal((await call('','POST',{document:doc})).status,401);
+ const create=await call('','POST',{document:doc},identities[0]);assert.equal(create.status,201,await create.clone().text());const canvas=await create.json();assert.equal(canvas.revision,1);
+ const root='/'+canvas.id;
+ assert.equal((await call(root,'GET',undefined,identities[1])).status,404);
+ assert.equal((await call(root,'PUT',{revision:1,document:doc},{...identities[0],origin:'https://evil.example'})).status,403);
+ assert.equal((await call(root,'PUT',{revision:1,document:doc},{...identities[0],authorization:'Bearer invalid',origin:'https://evil.example'})).status,404,'A bearer request cannot fall back to an owner cookie');
+ assert.equal((await call(root,'PUT',{revision:1,document:{...doc,links:[['note','script'],['script','note']]}},identities[0])).status,400,'Imported cyclic graphs are rejected');
+ const linked=await call(root+'/link','POST',{},identities[0]);assert.equal(linked.status,201);const credentials=await linked.json();const agent={authorization:'Bearer '+credentials.token};
+ assert.equal((await call('','GET',undefined,agent)).status,401);
+ const other=await (await call('','POST',{document:doc},identities[0])).json();assert.equal((await call('/'+other.id,'GET',undefined,agent)).status,404,'A link cannot read another canvas');
+ assert.equal((await call(root,'PUT',{revision:1,document:doc},identities[0])).status,200);
+ assert.equal((await call(root,'PUT',{revision:1,document:doc},identities[0])).status,409);
+ async function queue(rev:number){const r=await call(root+'/tasks','POST',{revision:rev,targetId:'script'},identities[0]);assert.equal(r.status,201,await r.clone().text());return (await r.json()).id as string}
+ const concurrent=await Promise.all([0,1].map(()=>call('/'+other.id,'PUT',{revision:1,document:doc},identities[0])));
+ assert.deepEqual(concurrent.map(r=>r.status).sort(),[200,409],'Concurrent saves cannot lose an update');
+ const first=await queue(2);
+ assert.equal((await call(root+'/tasks','POST',{revision:2,targetId:'script'},identities[0])).status,409,'Only one live task per target');
+ const recipe=await (await call(root+'/tasks/'+first,'GET',undefined,agent)).json();assert.equal(recipe.request.references[0].text,doc.cards[0].text);assert.equal(recipe.request.instruction,'写六个分镜');
+ assert.equal((await call(root+'/tasks/'+first,'GET',undefined,identities[1])).status,404);
+ const result={status:'succeeded',result:{text:'第一镜：城市醒来。'}};
+ assert.equal((await call(root+'/tasks/'+first,'PATCH',result,agent)).status,409,'Result cannot arrive before claim');
+ assert.equal((await call(root+'/tasks/'+first,'PATCH',{status:'running'},agent)).status,200);
+ assert.equal((await call(root,'PUT',{revision:2,document:{...doc,cards:doc.cards.map(n=>({...n,x:n.x+10}))}},identities[0])).status,200);
+ assert.equal((await call(root+'/tasks/'+first,'PATCH',result,agent)).status,409,'Stale result must not overwrite newer user edits');
+ assert.equal((await call(root+'/tasks/'+first,'PATCH',{status:'failed',error:'依据新版本重新派发'},identities[0])).status,200);
+ const second=await queue(3);assert.equal((await call(root+'/tasks/'+second,'PATCH',{status:'running'},agent)).status,200);
+ assert.equal((await call(root+'/tasks/'+second,'PATCH',{status:'succeeded',result:{text:{invalid:true}}},agent)).status,400,'Malformed results do not mutate the canvas');
+ assert.equal((await call(root+'/tasks/'+second,'PATCH',{status:'succeeded',result:{image:'data:image/png;base64,AAAA'}},agent)).status,400,'A script node cannot accept an image result');
+ assert.equal((await call(root+'/tasks/'+second,'PATCH',result,agent)).status,200);
+ assert.equal((await call(root+'/tasks/'+second,'PATCH',result,agent)).status,200,'Identical completion is idempotent');
+ assert.equal((await call(root+'/tasks/'+second,'PATCH',{status:'succeeded',result:{text:'覆盖'}},agent)).status,409);
+ const final=await (await call(root,'GET',undefined,identities[0])).json();assert.equal(final.revision,4);assert.equal(final.document.cards.find((n:{id:string})=>n.id==='script').text,'第一镜：城市醒来。');assert.deepEqual(final.document.links,doc.links);
+ const png='data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+ip1sAAAAASUVORK5CYII=';
+ const imageDocument:CanvasDocument={version:1,cards:[
+  {id:'source',kind:'image',title:'参考图',text:'保留原图',image:png,x:0,y:0},
+  {id:'generated',kind:'image',title:'图生图',text:'',instruction:'保留构图，改为雪夜',operation:'generate',x:500,y:0},
+  {id:'upscaled',kind:'image',title:'图片高清',text:'',operation:'upscale',x:1000,y:0},
+ ],links:[['source','generated'],['generated','upscaled']]};
+ const imageCreate=await call('','POST',{document:imageDocument},identities[0]);assert.equal(imageCreate.status,201);
+ const imageCanvas=await imageCreate.json(),imageRoot='/'+imageCanvas.id;
+ const imageLink=await call(imageRoot+'/link','POST',{},identities[0]);assert.equal(imageLink.status,201);
+ const imageAgent={authorization:'Bearer '+(await imageLink.json()).token};
+ for(const [index,targetId] of ['generated','upscaled'].entries()){
+  const queued=await call(imageRoot+'/tasks','POST',{revision:index+1,targetId},identities[0]);assert.equal(queued.status,201,await queued.clone().text());
+  const taskId=(await queued.json()).id,taskPath=imageRoot+'/tasks/'+taskId;
+  const snapshotResponse=await call(taskPath,'GET',undefined,imageAgent);assert.equal(snapshotResponse.status,200);
+  const snapshot=await snapshotResponse.json();assert.equal(snapshot.request.operation,index===0?'generate':'upscale');
+  assert.equal(snapshot.request.references[0].id,index===0?'source':'generated');
+  assert.equal(snapshot.request.references[0].image,png,'Image tasks carry the referenced image bytes');
+  assert.deepEqual(snapshot.request.result.allowedFields,['image','text']);
+  assert.equal((await call(taskPath,'PATCH',{status:'running'},imageAgent)).status,200);
+  const completion={status:'succeeded',result:{image:png,text:index===0?'雪夜图片结果':'高清图片结果'}};
+  const completed=await call(taskPath,'PATCH',completion,imageAgent);assert.equal(completed.status,200,await completed.clone().text());
+  assert.equal((await call(taskPath,'PATCH',completion,imageAgent)).status,200,'Image completion retries are idempotent');
+  const stateResponse=await call(imageRoot,'GET',undefined,identities[0]);assert.equal(stateResponse.status,200);
+  const state=await stateResponse.json();assert.equal(state.revision,index+2);
+  const cards=(state.document as CanvasDocument).cards;
+  assert.equal(cards.find(n=>n.id===targetId)?.image,png);assert.equal(cards.find(n=>n.id===targetId)?.text,completion.result.text);
+  assert.deepEqual(cards.find(n=>n.id==='source'),imageDocument.cards[0],'Generation preserves the reference node');
+  assert.deepEqual(state.document.links,imageDocument.links,'Image results preserve the reference graph');
+  if(index===0)assert.deepEqual(cards.find(n=>n.id==='upscaled'),imageDocument.cards[2],'Generation only updates its target');
+  else assert.equal(cards.find(n=>n.id==='generated')?.text,'雪夜图片结果','Upscaling preserves the previous generated image');
+ }
+ assert.equal((await call(imageRoot+'/link','DELETE',{},identities[0])).status,200);
+ assert.equal((await call(imageRoot,'GET',undefined,imageAgent)).status,404);
+ assert.equal((await call(root+'/link','POST',{},agent)).status,403,'A delegated agent cannot mint links');
+ assert.equal((await call(root+'/link','DELETE',{},identities[0])).status,200);
+ assert.equal((await call(root,'GET',undefined,agent)).status,404,'Revocation takes effect on the next request');
+ const rotated=await (await call(root+'/link','POST',{},identities[0])).json();
+ const expired={authorization:'Bearer '+rotated.token};
+ await db().query("UPDATE canvas_agent_links SET expires_at=now()-interval '1 second' WHERE canvas_id=$1",[canvas.id]);
+ assert.equal((await call(root,'GET',undefined,expired)).status,404,'Expired capabilities are rejected');
+ const rotations=await Promise.all([call(root+'/link','POST',{},identities[0]),call(root+'/link','POST',{},identities[0])]);
+ assert.ok(rotations.every(r=>r.status===201));
+ assert.equal((await db().query('SELECT count(*)::int AS count FROM canvas_agent_links WHERE canvas_id=$1',[canvas.id])).rows[0].count,1,'Concurrent rotation leaves one active capability');
+ const docs=await call(root+'?agent_mode=True');assert.equal(docs.status,200);assert.match(await docs.text(),/Authorization/);
+}
diff --git a/apps/waterfall-wiki/tests/canvas-ui-integration.ts b/apps/waterfall-wiki/tests/canvas-ui-integration.ts
new file mode 100644
index 0000000..7f882cf
--- /dev/null
+++ b/apps/waterfall-wiki/tests/canvas-ui-integration.ts
@@ -0,0 +1,117 @@
+import assert from 'node:assert/strict';
+import {randomUUID} from 'node:crypto';
+import {chromium,type Request} from 'playwright-core';
+import {db} from '../src/lib/db';
+import {hashPassword,ACCOUNT_COOKIE} from '../src/lib/account-crypto';
+
+export async function verifyCanvasAgentUI(base:string){
+ assert.equal(process.env.PROMPT_INTEGRATION_TEST,'1');
+ const owner=randomUUID(),email=owner+'@example.com',password='Canvas integration example1!';
+ await db().query("INSERT INTO account_users(id,email,password_hash,verified_at) VALUES($1,$2,$3,now())",[owner,email,await hashPassword(password)]);
+ const browser=await chromium.launch({executablePath:process.env.CHROMIUM_PATH||'/usr/bin/chromium',headless:true,args:['--no-sandbox','--disable-dev-shm-usage']});
+ const context=await browser.newContext({viewport:{width:1440,height:1000}}),errors:string[]=[];
+ const page=await context.newPage(),canvasRequests:string[]=[],pending=new Set<Request>(),network:string[]=[];
+ const started=Date.now(),navigation:{ms:number;event:string;path:string}[]=[];
+ const mark=(event:string)=>{navigation.push({ms:Date.now()-started,event,path:new URL(page.url()).pathname});if(navigation.length>60)navigation.shift()};
+ page.on('framenavigated',frame=>{if(frame===page.mainFrame())mark('framenavigated')});
+ page.on('domcontentloaded',()=>mark('domcontentloaded'));page.on('load',()=>mark('load'));
+ const requestName=(request:{method:()=>string;url:()=>string})=>request.method()+' '+new URL(request.url()).pathname;
+ page.on('request',request=>pending.add(request));
+ page.on('requestfinished',request=>pending.delete(request));
+ page.on('requestfailed',request=>{pending.delete(request);network.push(requestName(request)+': '+request.failure()?.errorText)});
+ page.on('response',response=>{const url=new URL(response.url());if(url.pathname.startsWith('/api/canvases'))canvasRequests.push(`${response.request().method()} ${url.pathname} ${response.status()}`)});
+ try{
+  page.setDefaultTimeout(20000);page.on('pageerror',e=>errors.push(e.message));
+  mark('open landing');await page.goto(base+'/',{waitUntil:'domcontentloaded'});
+  await page.getByRole('heading',{name:/想法不该停在对话里/,level:1}).waitFor();
+  const accountSession=page.waitForResponse(response=>new URL(response.url()).pathname==='/api/account/session'&&response.request().method()==='GET');
+  const [,sessionResponse]=await Promise.all([page.getByRole('link',{name:'开始创作',exact:true}).click(),accountSession]);
+  assert.equal(sessionResponse.status(),200);assert.equal((await sessionResponse.json()).user,null);
+  await page.getByRole('heading',{name:'欢迎回来',exact:true,level:2}).waitFor();
+  mark('login form ready');
+  await page.getByLabel('邮箱地址',{exact:true}).fill(email);
+  await page.getByLabel('密码',{exact:true}).fill(password);
+  mark('before login click');await page.locator('form').getByRole('button',{name:'登录',exact:true}).click();
+  mark('after login click');
+  await page.waitForURL(url=>url.pathname==='/workspace',{waitUntil:'commit'});
+  mark('workspace URL accepted');
+  await page.getByRole('heading',{name:'今天，让哪个想法成形？',exact:true}).waitFor();
+  mark('workspace rendered');
+  const session=(await context.cookies()).find(c=>c.name===ACCOUNT_COOKIE);assert.ok(session?.httpOnly,'The actual login response establishes an HTTP-only account session');
+  const ownerHeaders={cookie:ACCOUNT_COOKIE+'='+session.value};
+  await page.getByRole('link',{name:'无限画布',exact:true}).click();
+  await page.getByRole('link',{name:email,exact:true}).waitFor({state:'attached'});
+  await page.getByRole('button',{name:'从示例开始 ↗',exact:true}).click();
+  const shot=page.locator('[data-node-id="shot"] [data-node-content]');
+  await shot.click();await shot.click();
+  const composer=page.getByRole('region',{name:'节点编辑器',exact:true});
+  await composer.getByRole('textbox',{name:'创作要求',exact:true}).fill('根据参考资料写六个分镜');
+  await composer.getByRole('button',{name:'交给 Agent',exact:true}).click();
+  const panel=page.getByRole('region',{name:'Agent 连接',exact:true});
+  await panel.getByText('任务已创建，等待你的 coding agent 领取',{exact:true}).waitFor();
+  const list=await fetch(base+'/api/canvases',{headers:ownerHeaders}).then(r=>r.json());assert.equal(list.canvases.length,1);
+  const root='/api/canvases/'+list.canvases[0].id;
+  const state=await fetch(base+root,{headers:ownerHeaders}).then(r=>r.json());assert.equal(state.tasks.length,1);assert.equal(state.tasks[0].status,'queued');
+  await panel.getByRole('button',{name:'生成连接凭据',exact:true}).click();
+  const credentials=panel.getByRole('textbox',{name:'Agent 连接凭据',exact:true});await credentials.waitFor();
+  await panel.getByRole('button',{name:'复制给 coding agent',exact:true}).click();
+  await panel.getByRole('status').filter({hasText:/凭据已复制|已选中凭据/}).waitFor();
+  const first=JSON.parse(await credentials.inputValue());assert.equal(first.canvasUrl,base+root);
+  const agentHeaders={'Content-Type':'application/json',authorization:first.authorization};
+  const task=root+'/tasks/'+state.tasks[0].id;
+  const recipe=await fetch(base+task,{headers:agentHeaders}).then(r=>r.json());assert.equal(recipe.request.instruction,'根据参考资料写六个分镜');assert.equal(recipe.request.references[0].id,'reference');
+  const patch=async(body:unknown)=>fetch(base+task,{method:'PATCH',headers:agentHeaders,body:JSON.stringify(body)});
+  assert.equal((await patch({status:'running'})).status,200);
+  await panel.getByText(/Agent 正在处理/).waitFor();
+  // This fixture verifies the external-client protocol and UI delivery, not model quality.
+  let generated='第一镜：晨光穿过窗边的植物。';
+  assert.equal((await patch({status:'succeeded',result:{text:generated}})).status,200);
+  await page.locator('[data-node-id="shot"] [data-node-content]').getByText(generated,{exact:true}).waitFor();
+  const updated=await fetch(base+root,{headers:ownerHeaders}).then(r=>r.json());
+  assert.equal(updated.document.cards.find((n:{id:string})=>n.id==='shot').instruction,'根据参考资料写六个分镜');
+  await panel.getByRole('button',{name:'关闭 Agent 连接',exact:true}).click();
+  await shot.click();await shot.click();
+  await composer.getByRole('textbox',{name:'创作要求',exact:true}).fill('再写一个新镜头');
+  const queued=page.waitForResponse(r=>r.request().method()==='POST'&&new URL(r.url()).pathname===root+'/tasks');
+  await composer.getByRole('button',{name:'交给 Agent',exact:true}).click();
+  const queuedResponse=await queued;assert.equal(queuedResponse.status(),201);const secondTask=await queuedResponse.json();
+  await panel.getByRole('button',{name:'关闭 Agent 连接',exact:true}).click();
+  const brief=page.locator('[data-node-id="brief"] [data-node-content]');await brief.click();await brief.click();
+  const localText=page.getByRole('textbox',{name:'01 / 创意简报 内容',exact:true});await localText.fill('用户尚未同步的本机修改');
+  const nextTask=root+'/tasks/'+secondTask.id;
+  const nextPatch=(body:unknown)=>fetch(base+nextTask,{method:'PATCH',headers:agentHeaders,body:JSON.stringify(body)});
+  assert.equal((await nextPatch({status:'running'})).status,200);
+  generated='第二镜：城市在雨后醒来。';
+  assert.equal((await nextPatch({status:'succeeded',result:{text:generated}})).status,200);
+  await page.getByRole('button',{name:'Agent · 在线画布',exact:true}).click();
+  await panel.getByRole('button',{name:'载入在线版本',exact:true}).waitFor();
+  assert.equal(await localText.inputValue(),'用户尚未同步的本机修改','Polling must not replace unsaved local work');
+  await panel.getByRole('button',{name:'载入在线版本',exact:true}).click();
+  await page.locator('[data-node-id="shot"] [data-node-content]').getByText(generated,{exact:true}).waitFor();
+  assert.equal(await page.locator('[data-node-id="brief"] [data-node-content]').textContent(),state.document.cards.find((n:{id:string})=>n.id==='brief').text);
+  await panel.getByRole('button',{name:'生成连接凭据',exact:true}).click();
+  await page.waitForFunction(old=>{const field=document.querySelector<HTMLTextAreaElement>('textarea[aria-label="Agent 连接凭据"]');return !!field&&JSON.parse(field.value).authorization!==old},first.authorization);
+  const second=JSON.parse(await credentials.inputValue());assert.equal((await fetch(base+root,{headers:agentHeaders})).status,404);
+  await panel.getByRole('button',{name:'撤销连接',exact:true}).click();
+  await panel.getByText('Agent 访问已撤销',{exact:true}).waitFor();
+  assert.equal((await fetch(base+root,{headers:{authorization:second.authorization}})).status,404);
+  await page.setViewportSize({width:390,height:844});
+  const bounds=await panel.boundingBox();assert.ok(bounds&&bounds.x>=0&&bounds.x+bounds.width<=390,'Agent panel stays within the mobile viewport');
+  await page.reload({waitUntil:'domcontentloaded'});
+  await page.getByRole('link',{name:email,exact:true,includeHidden:true}).waitFor({state:'attached'});
+  await page.getByRole('button',{name:'Agent',exact:true}).click();
+  const reopened=page.getByRole('region',{name:'Agent 连接',exact:true});
+  await reopened.getByRole('combobox',{name:'打开在线画布',exact:true}).selectOption(list.canvases[0].id);
+  await reopened.getByRole('button',{name:'载入在线版本',exact:true}).click();
+  await page.locator('[data-node-id="shot"] [data-node-content]').getByText(generated,{exact:true}).waitFor();
+  assert.deepEqual(errors,[]);
+  console.log('Canvas navigation timeline',JSON.stringify(navigation));
+  console.log('Canvas UI dispatched a real stored task, received an external-client fixture result, rotated/revoked access and restored its online document');
+ }catch(error){
+  const statuses=await page.getByRole('status').allTextContents().catch(()=>[]);
+  const headings=await page.getByRole('heading').allTextContents().catch(()=>[]);
+  const documentState=await page.evaluate(()=>({readyState:document.readyState,navigation:performance.getEntriesByType('navigation').map(entry=>{const timing=entry as PerformanceNavigationTiming;return {type:timing.type,domContentLoadedEventEnd:timing.domContentLoadedEventEnd,loadEventEnd:timing.loadEventEnd}})})).catch(()=>null);
+  console.error('Canvas agent UI diagnostics',JSON.stringify({url:page.url(),browserConnected:browser.isConnected(),headings,statuses,documentState,navigation,pending:[...pending].map(requestName),network:network.slice(-20),canvasRequests:canvasRequests.slice(-20),errors}));
+  throw error;
+ }finally{await context.close();await browser.close()}
+}
diff --git a/apps/waterfall-wiki/tests/integration.test.ts b/apps/waterfall-wiki/tests/integration.test.ts
index 44e3f46..ca8c41a 100644
--- a/apps/waterfall-wiki/tests/integration.test.ts
+++ b/apps/waterfall-wiki/tests/integration.test.ts
@@ -1,3 +1,5 @@
+import {verifyCanvasWorkspace} from './canvas-integration';
+import {verifyCanvasAgentUI} from './canvas-ui-integration';
 import assert from 'node:assert/strict';
 import {test} from 'node:test';
 import {spawn} from 'node:child_process';
@@ -20,7 +22,7 @@ import {verifyFlatNoteMigration} from './flat-note-migration';
 import {staticEntries} from '../src/lib/explore';
 import {publishLearningSeries} from '../src/lib/publish-learning-series';
 
-test('real PostgreSQL + S3 notes, flat tags, resource sharing and video processing', {timeout:300000}, async()=>{
+test('real PostgreSQL + S3 notes, flat tags, resource sharing and video processing', {timeout:600000}, async()=>{
  assert.equal(process.env.PROMPT_INTEGRATION_TEST,'1','Run only against an explicitly isolated test database');
  const socket=createServer();socket.listen(0,'127.0.0.1');await once(socket,'listening');const address=socket.address();assert.ok(address&&typeof address!=='string');const port=address.port;await new Promise<void>(r=>socket.close(()=>r()));
  const external=process.env.PROMPT_TEST_BASE_URL;
@@ -32,6 +34,8 @@ test('real PostgreSQL + S3 notes, flat tags, resource sharing and video processi
   let ready=false;for(let i=0;i<60;i++){try{if((await fetch(base+'/api/health')).ok){ready=true;break;}}catch{}await setTimeout(250);}assert.ok(ready);
   for(const route of ['/','/images','/videos','/audio','/articles','/motion','/library/import','/tools/doodle','/tools/skills','/tools/skills/street-people','/tools/skills/shadow-puppet'])assert.equal((await fetch(base+route)).status,200,route);
   await verifyEmailAccounts();
+  await verifyCanvasWorkspace(base);
+  if(process.env.VERIFY_CANVAS_UI==='1')await verifyCanvasAgentUI(base);
   await verifyGuidancePublishing(base);
   await verifyFlatNoteMigration();
   const root=await request('/api/tags',{name:'线条',slug:'lines'});const child=await request('/api/tags',{name:'白色',slug:'white'});
diff --git a/compose.creative-review.yml b/compose.creative-review.yml
new file mode 100644
index 0000000..c5fbd80
--- /dev/null
+++ b/compose.creative-review.yml
@@ -0,0 +1,20 @@
+# Added only by isolated CI integration; no production ports or volumes.
+services:
+  prompt-studio:
+    image: ${STUDIO_REVIEW_IMAGE:?Build the Studio review image first}
+    init: true
+    environment:
+      HOSTNAME: 0.0.0.0
+      PORT: "3000"
+      STUDIO_WIKI_ORIGIN: http://waterfall-wiki:3000
+    security_opt:
+      - no-new-privileges:true
+    cap_drop: [ALL]
+    healthcheck:
+      test: ["CMD", "node", "-e", "fetch('http://127.0.0.1:3000/studio/api/health').then(r=>{if(!r.ok)process.exit(1)}).catch(()=>process.exit(1))"]
+      interval: 5s
+      timeout: 8s
+      retries: 24
+  tests:
+    environment:
+      VERIFY_CANVAS_UI: "1"
diff --git a/scripts/check-studio-contracts.mjs b/scripts/check-studio-contracts.mjs
index 73e75fb..e39543f 100644
--- a/scripts/check-studio-contracts.mjs
+++ b/scripts/check-studio-contracts.mjs
@@ -2,7 +2,7 @@
 import {readFile} from 'node:fs/promises';
 import assert from 'node:assert/strict';
 const root=new URL('../',import.meta.url),read=path=>readFile(new URL(path,root),'utf8');
-for(const file of ['layout-parameters.ts','series.ts'])assert.equal(await read('apps/studio/src/lib/'+file),await read('apps/waterfall-wiki/src/lib/'+file),file+' contract drift');
+for(const file of ['layout-parameters.ts','series.ts','canvas-document.ts'])assert.equal(await read('apps/studio/src/lib/'+file),await read('apps/waterfall-wiki/src/lib/'+file),file+' contract drift');
 const canonical=await read('content/studio-examples/autumn-journal.json');for(const app of ['studio','waterfall-wiki'])assert.equal(canonical,await read('apps/'+app+'/fixtures/autumn-journal.json'),'Example fixture drift');
 const doc=await read('apps/waterfall-wiki/src/lib/studio-design-documentation.ts'),encoded=doc.match(/export const designDocs=(.*);\n/);
 assert.ok(encoded);assert.equal(JSON.parse(encoded[1]),(await read('content/studio-tools/layouts-api.md')).replace('{{LAYOUTS}}','读取 /studio/api/layouts 获取全部27套构图。'),'Wiki/agent documentation drift');
diff --git a/scripts/integration.sh b/scripts/integration.sh
index 4e65f87..d08dad7 100644
--- a/scripts/integration.sh
+++ b/scripts/integration.sh
@@ -6,16 +6,23 @@ export COMPOSE_PROJECT_NAME="prompt-ci-${GITEA_RUN_ID:-$$}"
 export PG_PORT=0 S3_PORT=0 WEB_PORT=0 WEB_BIND_ADDRESS=127.0.0.1
 TEST_ENV=$(mktemp)
 chmod 0600 "$TEST_ENV"
-compose(){ docker compose -p "$COMPOSE_PROJECT_NAME" --env-file "$TEST_ENV" -f compose.yml "$@"; }
-cleanup(){ code=$?; if [ "$code" -ne 0 ]; then compose logs --tail 160 waterfall-wiki waterfall-wiki-worker; fi; compose down -v --remove-orphans; rm -f "$TEST_ENV"; }
+COMPOSE_FILES=(-f compose.yml)
+STUDIO_SERVICES=()
+if [[ -n "${STUDIO_REVIEW_IMAGE:-}" ]]; then
+ COMPOSE_FILES+=(-f compose.creative-review.yml)
+ STUDIO_SERVICES+=(prompt-studio)
+fi
+compose(){ docker compose -p "$COMPOSE_PROJECT_NAME" --env-file "$TEST_ENV" "${COMPOSE_FILES[@]}" "$@"; }
+cleanup(){ code=$?; if [ "$code" -ne 0 ]; then compose logs --tail 160 waterfall-wiki waterfall-wiki-worker "${STUDIO_SERVICES[@]}"; fi; compose down -v --remove-orphans; rm -f "$TEST_ENV"; }
 trap cleanup EXIT
 # Random credentials exist only for this disposable stack; no host Node required.
 docker run --rm --entrypoint node "$WATERFALL_WIKI_IMAGE" -e "const c=require('crypto');const hex=()=>c.randomBytes(24).toString('hex');console.log('POSTGRES_PASSWORD='+hex()+'\nS3_ACCESS_KEY='+hex()+'\nS3_SECRET_KEY='+hex())" > "$TEST_ENV"
 # Explicitly isolate legacy unauthenticated integration coverage; production fails closed.
 printf '\nAUTH_DISABLED_FOR_TESTS=true\n' >> "$TEST_ENV"
+if [[ -n "${STUDIO_REVIEW_IMAGE:-}" ]]; then printf '\nACCOUNT_PUBLIC_ORIGIN=http://waterfall-wiki:3000\nAUTH_COOKIE_SECURE=false\n' >> "$TEST_ENV"; fi
 compose up -d --no-build --wait --wait-timeout 120 postgres objects
 compose run --rm --no-deps migrate
-compose up -d --no-build --wait --wait-timeout 150 waterfall-wiki waterfall-wiki-worker
+compose up -d --no-build --wait --wait-timeout 150 waterfall-wiki waterfall-wiki-worker "${STUDIO_SERVICES[@]}"
 # The test runner calls the actual non-root production web/worker containers.
 compose run --rm --no-deps tests
 compose exec -T waterfall-wiki node container-health.mjs
diff --git a/scripts/verify-studio-production.sh b/scripts/verify-studio-production.sh
index 72c934a..66e6d2a 100644
--- a/scripts/verify-studio-production.sh
+++ b/scripts/verify-studio-production.sh
@@ -43,3 +43,9 @@ docker run --rm --volumes-from prompt-waterfall-wiki-1:ro \
  --mount "type=bind,src=$RESULT_DIR,dst=/tmp/studio-library" \
  -e AUTH_CONFIG_FILE=/auth/config.json -e NODE_PATH=/app/node_modules \
  --entrypoint node "$TEST_IMAGE" /delivery/scripts/verify-studio-visual.cjs "$MODE"
+docker run --rm \
+ --mount "type=bind,src=$REPO_ROOT,dst=/delivery,readonly" \
+ --mount "type=bind,src=$RESULT_DIR,dst=/tmp/studio-library" \
+ -e NODE_PATH=/app/node_modules -e CHROMIUM_PATH=/usr/bin/chromium \
+ -e SCREENSHOT_DIR=/tmp/studio-library/visual \
+ --entrypoint node "$TEST_IMAGE" /delivery/apps/studio/scripts/infinite-canvas-smoke.cjs