import {measureRenderer} from './renderer-performance.mjs';
/** Actual dashboard, GraphPage, headless renderer, browser storage and Next proxy. */
import assert from 'node:assert/strict';
import { createServer } from 'node:http';
import { mkdtemp, cp, copyFile, symlink, readFile, writeFile, rm } from 'node:fs/promises';
import { join, resolve } from 'node:path';
import { tmpdir } from 'node:os';
import { spawn } from 'node:child_process';
import { setTimeout as pause } from 'node:timers/promises';
import { createDocument, applyChanges } from '../../src/lib/canvas-core/index.ts';
const hooksOnly=process.argv.includes('--hooks-only'),performanceMode=process.argv.includes('--performance'),performanceCount=Number(process.env.HEADLESS_PERFORMANCE_COUNT??1000);
if(performanceMode&&(!Number.isSafeInteger(performanceCount)||performanceCount<1||performanceCount>10000))throw Error('invalid performance count');
const source = resolve(import.meta.dirname, '../..'), directory = await mkdtemp(join(tmpdir(), 'endoleap-renderer-')), profile = await mkdtemp(join(tmpdir(), 'endoleap-renderer-browser-'));
const id = n => `10000000-0000-4000-8000-${String(n).padStart(12, '0')}`;
const account = id(1), workspace = id(2), root = id(3), other = id(4), partition = id(5), calls = [], uploads = [], documents = new Map(), versions = new Map([[root, 1], [other, 1]]), assets = new Map(), assetBytes=new Map(), aiRuns = new Map();
const node = (id, ownerCanvasId, x) => ({ id, ownerCanvasId, incarnation: 1, componentId: 'text', dataVersion: 1, structure: 'node', data: { title: 'Card ' + x, text: 'Editable content' }, geometry: { x, y: 150, width: 260, height: 200, rotation: 0 } });
documents.set(root, createDocument(root, [{ id: root, parent: null }], [node('a', root, 80), node('b', root, 450), { id: 'edge', incarnation: 1, componentId: 'connection', dataVersion: 1, structure: 'connection', ownerCanvasId: root, source: { elementId: 'a' }, target: { elementId: 'b' }, data: {}, path: { type: 'bezier-chain', knots: [{ id: 'k', mode: 'corner', position: { x: 400, y: 250 }, in: { x: -20, y: 0 }, out: { x: 20, y: 0 } }] } }]));
documents.set(other, createDocument(other, [{ id: other, parent: null }], []));
if(performanceMode){
  const frame={...node('perf-frame',root,30),componentId:'frame',data:{title:'Performance partition',text:''},geometry:{x:30,y:50,width:1000,height:600,rotation:0}},children=Array.from({length:performanceCount},(_,index)=>({...node(`perf-${index}`,partition,(index%20)*280),geometry:{x:(index%20)*280,y:Math.floor(index/20)*220,width:260,height:200,rotation:0}})),incoming={id:'perf-incoming',incarnation:1,componentId:'connection',dataVersion:1,structure:'connection',ownerCanvasId:root,source:{elementId:'perf-source'},target:{elementId:'perf-frame'},data:{},path:null};
  versions.set(partition,1);documents.set(root,createDocument(root,[{id:root,parent:null},{id:partition,parent:{canvasId:root,entryElementId:frame.id}}],[node('perf-source',root,-300),frame,...children,incoming]));
}
const boards = [root, other].map((id, i) => ({ id, workspace_id: workspace, kind: 'board', version: 1, title: i ? 'Other board' : 'Headless board' }));
const png = Buffer.from('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+aB1sAAAAASUVORK5CYII=', 'base64');
let scopeStreamRoot=null,releaseScopeStream;const scopeStreamGate=new Promise(resolve=>releaseScopeStream=resolve);
let brokenStreamRoot=null,abandonedRoot=null,releaseAbandoned;const abandonedGate=new Promise(resolve=>releaseAbandoned=resolve);
let releaseFirstModel;const firstModelGate=new Promise(resolve=>{releaseFirstModel=resolve;});let gatedFirstModel=!performanceMode;
let releaseImport;const importGate=new Promise(resolve=>{releaseImport=resolve;});let importWriteSeen=false;const editReceipts=new Map();
let releaseApply;const applyGate=new Promise(resolve=>{releaseApply=resolve;});
let releaseUpload; const uploadGate = new Promise(resolve => { releaseUpload = resolve; });
const model = (document, complete = true, participants=[...document.canvases.keys()]) => ({ documentFormatVersion: 1, projectId: document.projectId, complete, canvases: [...document.canvases.values()].filter(canvas=>participants.includes(canvas.id)), elements: [...document.elements.values()].filter(element=>participants.includes(element.ownerCanvasId)), tombstones: Object.fromEntries(document.tombstones), versions: Object.fromEntries(participants.map(id => [id, versions.get(id)])), removedCanvasIds: [] });
let rejectNextEdit=false,rejectedEdit,denyAssetMetadata=false,metadataWait,releaseMetadata;
const upstream = createServer(async (request, response) => {
  try {
    const url = new URL(request.url, 'http://fixture'), path = url.pathname, chunks = [];
    for await (const chunk of request) chunks.push(chunk);
    const bytes = Buffer.concat(chunks); calls.push({ method: request.method, path, bytes, headers: request.headers });
    const reply = (status, body) => { response.writeHead(status, { 'Content-Type': 'application/json' }); response.end(JSON.stringify(body)); };
    if (path.endsWith('/auth/logout')) return reply(204, null);
    if (path.endsWith('/profile')) return reply(200, { id: account, username: 'fixture', display_name: 'Creator', email: null });
    if (path.endsWith('/workspaces')) return reply(200, [{ id: workspace, name: 'Fixture workspace', role: 'admin' }]);
    if (path.endsWith('/materials')) return reply(200, { items: boards, next_offset: null });
    const board = boards.find(board => path.endsWith('/materials/' + board.id)); if (board) return reply(200, board);
    const read = path.match(/\/materials\/([^/]+)\/canvas\/model$/);
    if(read&&request.headers.accept==='application/vnd.foundry.canvas-model+ndjson;version=1'){
      const value=model(documents.get(read[1])),token='fixture-snapshot-'+calls.length;let sequence=0;
      response.writeHead(200,{'Content-Type':'application/vnd.foundry.canvas-model+ndjson;version=1'});
      const line=record=>response.write(JSON.stringify({streamVersion:1,snapshotToken:token,sequence:sequence++,...record})+'\n');
      line({kind:'header',documentFormatVersion:1,projectId:value.projectId,canvases:value.canvases,versions:value.versions,tombstones:value.tombstones,removedCanvasIds:value.removedCanvasIds,elementCount:value.elements.length,canvasElementCounts:Object.fromEntries(value.canvases.map(canvas=>[canvas.id,value.elements.filter(element=>element.ownerCanvasId===canvas.id).length])),elementOwners:Object.fromEntries(value.elements.map(element=>[element.id,element.ownerCanvasId]))});
      if(read[1]===brokenStreamRoot){line({kind:'elements',elements:value.elements.slice(0,1)});response.end('{broken tail}\n');return;}
      let start=0;
      if(read[1]===scopeStreamRoot){line({kind:'elements',elements:value.elements.slice(0,3)});start=3;await scopeStreamGate;if(response.destroyed)return;}
      if(read[1]===abandonedRoot){line({kind:'elements',elements:value.elements.slice(0,1)});start=1;await abandonedGate;if(response.destroyed)return;}
      if(gatedFirstModel&&read[1]===root&&value.elements.length){gatedFirstModel=false;line({kind:'elements',elements:value.elements.slice(0,1)});start=1;await firstModelGate;}
      for(let offset=start;offset<value.elements.length;offset+=64)line({kind:'elements',elements:value.elements.slice(offset,offset+64)});
      line({kind:'complete',elementCount:value.elements.length});return response.end();
    }
    if (read) return reply(200, { model: model(documents.get(read[1])) });
    const write = path.match(/\/materials\/([^/]+)\/canvas\/model\/operations$/);
    if (write) {
      const batch = JSON.parse(bytes.toString()), previous = documents.get(write[1]);
      if(batch.operations.some(operation=>operation.changes.some(change=>change.kind==='element'&&change.after?.data?.title==='Imported NDJSON node'))){importWriteSeen=true;await importGate;}
      assert.equal(request.headers['x-expected-account'], account); assert.equal(request.headers['idempotency-key'], batch.request_id);
      if(rejectNextEdit){rejectNextEdit=false;rejectedEdit=batch;const before=previous.elements.get('b');documents.set(write[1],applyChanges(previous,[{kind:'field',target:{id:'b',incarnation:1},field:'data.text',before:before.data.text,after:'Remote reviewed',beforePresent:true,afterPresent:true}]));versions.set(root,versions.get(root)+1);return reply(409,{protocol_version:2,request_id:batch.request_id,status:'not-applied',terminal:true,error:'version_conflict'});}
      for(const [id,version] of Object.entries(batch.expected_versions))assert.equal(version,versions.get(id)??0);
      let next = previous; for (const operation of batch.operations) next = applyChanges(next, operation.changes);
      documents.set(write[1], next);for(const id of Object.keys(batch.expected_versions))versions.set(id,(versions.get(id)??0)+1);
      const receipt={ protocol_version: 2, request_id: batch.request_id, status: 'applied', operation_ids: batch.operations.map(operation => operation.id), model: model(next, false,Object.keys(batch.expected_versions)) };editReceipts.set(batch.request_id,receipt);return reply(200,receipt);
    }
    const editQuery=path.match(/\/canvas\/model\/operations\/([^/]+)$/);if(editQuery)return editReceipts.has(editQuery[1])?reply(200,editReceipts.get(editQuery[1])):reply(404,{request_id:editQuery[1],status:'unknown'});
    if(path.endsWith('/canvas/ai/models'))return reply(200,{models:[{id:'fixture-text',label:'Fixture text',available:true,input_modalities:['text'],output_modalities:['text']}]});
    if(path.endsWith('/canvas/ai/runs')&&request.method==='POST'){
      const input=JSON.parse(bytes.toString()),owner=documents.get(root).elements.get(input.node_id).ownerCanvasId;assert.equal(request.headers['x-expected-account'],account);assert.equal(request.headers['idempotency-key'],input.request_id);assert.equal(request.headers['if-match'],'"'+versions.get(owner)+'"');assert.deepEqual(input.expected_versions,Object.fromEntries([...documents.get(root).canvases.keys()].map(id=>[id,versions.get(id)])));
      const previous=documents.get(root),element=previous.elements.get(input.node_id),next=applyChanges(previous,[{kind:'field',target:{id:element.id,incarnation:element.incarnation},field:'data.ai',before:element.data.ai??null,beforePresent:element.data.ai!==undefined,after:{enabled:true,modelId:input.model_id,prompt:input.prompt,parameters:input.parameters,propagate:input.propagate},afterPresent:true}]);documents.set(root,next);versions.set(owner,versions.get(owner)+1);
      const runId=id(700+aiRuns.size*10),plan={steps:[{step_id:'step-b',board_id:owner,node_id:input.node_id,canonical_root:root,target_incarnation:input.target_incarnation,kind:'text',model_id:input.model_id,status:'queued',dependencies:[],static_inputs:[]}],edges:[],frozen_versions:Object.fromEntries([...next.canvases.keys()].map(id=>[id,versions.get(id)]))};
      const admitted={protocol_version:2,request_id:input.request_id,operation_id:input.operation_id,admission:'accepted',status:'queued',run_id:runId,plan,canvas_version:versions.get(owner),document_format_version:1,target_incarnation:input.target_incarnation,model:model(next,false,[owner])};
      aiRuns.set(runId,{status:'queued',plan,admitted,events:[{seq:1,run_id:runId,type:'run.queued',status:'queued'},{seq:2,run_id:runId,type:'step.queued',step_id:'step-b',board_id:owner,node_id:input.node_id,status:'queued'}]});return reply(202,admitted);
    }
    const aiAction=path.match(/\/canvas\/ai\/runs\/([^/]+)\/(cancel|apply)$/);
    if(aiAction){
      const run=aiRuns.get(aiAction[1]),input=JSON.parse(bytes.toString()),base={protocol_version:2,request_id:input.request_id,operation_id:input.operation_id,action:'run.'+aiAction[2],status:'applied',run_id:aiAction[1]};
      assert.equal(request.headers['idempotency-key'],input.request_id);assert.equal(request.headers['x-expected-account'],account);
      if(aiAction[2]==='cancel'){run.status='cancelled';run.events.push({seq:run.events.length+1,run_id:aiAction[1],type:'run.completed',status:'cancelled'});return reply(200,{...base,run_status:'cancelled'});}
      const owner=documents.get(root).elements.get(input.node_id).ownerCanvasId;assert.equal(input.target_canvas_id,owner);assert.equal(input.target_incarnation,1);assert.equal(request.headers['if-match'],'"'+versions.get(owner)+'"');
      const output=run.events.find(event=>event.type==='step.output'&&event.output.output_id===input.output_id).output,previous=documents.get(root),element=previous.elements.get(input.node_id),next=applyChanges(previous,[{kind:'field',target:{id:element.id,incarnation:element.incarnation},field:'data.text',before:element.data.text,after:output.text,beforePresent:true,afterPresent:true}]);documents.set(root,next);versions.set(owner,versions.get(owner)+1);
      const applied={...base,step_id:'step-b',board_id:owner,origin_board_id:run.plan.steps[0].board_id,canonical_root:root,node_id:input.node_id,output_id:input.output_id,document_format_version:1,target_incarnation:1,canvas_version:versions.get(owner),model:model(next,false,[owner])};run.events.push({...applied,seq:run.events.length+1,type:'step.applied'});await applyGate;return reply(200,applied);
    }
    const aiPoll=path.match(/\/canvas\/ai\/runs\/([^/]+)$/);
    if(aiPoll){const run=aiRuns.get(aiPoll[1]),after=Number(url.searchParams.get('after_seq')||0),events=run.events.filter(event=>event.seq>after);return reply(200,{run_id:aiPoll[1],status:run.status,plan:run.plan,steps:[],events,next_seq:events.at(-1)?.seq??after,has_more:false,outputs:[]});}
    if (path.endsWith('/assets') && request.method === 'POST') {
      const upload = new Request('http://fixture', { method: 'POST', body: bytes, headers: { 'Content-Type': request.headers['content-type'] } }), form = await upload.formData(), file = form.get('image');
      const asset = { id: request.headers['x-resource-id'], bytes: file.size, mime_type: 'image/png', width: 4, height: 2, url: `https://api.foundry.entroia.com/projects/endoleap/workspaces/${workspace}/assets/${request.headers['x-resource-id']}` };
      uploads.push(asset); assets.set(asset.id, asset);assetBytes.set(asset.id,Buffer.from(await file.arrayBuffer())); await uploadGate;
      return reply(201, { protocol_version: 2, request_id: request.headers['idempotency-key'], status: 'applied', asset });
    }
    const assetMetadata=path.match(/\/assets\/metadata\/([^/]+)$/);
    if(assetMetadata){if(metadataWait)await metadataWait;if(denyAssetMetadata||!assets.has(assetMetadata[1]))return reply(404,{error:'not_found'});const original=assetBytes.get(assetMetadata[1]),sha256=[...new Uint8Array(await crypto.subtle.digest('SHA-256',original))].map(n=>n.toString(16).padStart(2,'0')).join('');return reply(200,{metadata_version:1,asset:assets.get(assetMetadata[1]),sha256});}
    if (/\/assets\/[^/]+$/.test(path)) { response.writeHead(200, { 'Content-Type': 'image/png' }); return response.end(png); }
    reply(404, { error: 'not_found' });
  } catch (error) { response.writeHead(500, { 'Content-Type': 'application/json' }); response.end(JSON.stringify({ error: error.message })); }
});
await new Promise(resolve => upstream.listen(0, '127.0.0.1', resolve));
const reserve = createServer(); await new Promise(resolve => reserve.listen(0, '127.0.0.1', resolve)); const port = reserve.address().port; await new Promise(resolve => reserve.close(resolve));
let next, chrome, socket, logs = '';
try {
  await cp(join(source, 'src'), join(directory, 'src'), { recursive: true });
  await cp(join(source, 'public'), join(directory, 'public'), { recursive: true });
  if(!performanceMode){
    await copyFile(join(source,'tests/headless/renderer-extension.tsx'),join(directory,'src/components/canvas/renderer-fixture.tsx'));
    await copyFile(join(source,'tests/headless/react-hooks-fixture.tsx'),join(directory,'src/components/canvas/hooks-fixture.tsx'));
    // A fixture Host action exercises the public engine API; no debug entry point ships in the app.
    const importsFile=join(directory,'src/components/canvas/headless-imports.tsx'),importsSource=await readFile(importsFile,'utf8');
    await writeFile(importsFile,importsSource.replace('import { useCallback,','import { useEffect, useCallback,').replace('  const subscribe =',`  useEffect(()=>{const host=globalThis as typeof globalThis&{__headlessCollectSources?:()=>ReturnType<ProjectEngine['collectImportSources']>};const collect=()=>engine.collectImportSources({retentionMs:0});host.__headlessCollectSources=collect;return()=>{if(host.__headlessCollectSources===collect)delete host.__headlessCollectSources;};},[engine]);
  const subscribe =`));
    const hostFile=join(directory,'src/components/workspace/canvas-runtime-host.tsx'),host=await readFile(hostFile,'utf8');assert.ok(host.includes('extensions=[]'),'host extension installation point changed');await writeFile(hostFile,host.replace('"use client";','"use client";\nimport {fixtureExtension} from "@/components/canvas/renderer-fixture";\nimport {HookChecks} from "@/components/canvas/hooks-fixture";').replace('extensions=[]','extensions=[fixtureExtension]').replace('{children}</Renderers.Provider>','{children}<HookChecks/></Renderers.Provider>'));
  }

  for (const file of ['package.json', 'tsconfig.json', 'postcss.config.mjs']) await copyFile(join(source, file), join(directory, file));
  await symlink(join(source, 'node_modules'), join(directory, 'node_modules'));
  next = spawn(process.execPath, [join(source, 'node_modules/next/dist/bin/next'), 'dev', '--webpack', '--hostname', '127.0.0.1', '--port', String(port)], { cwd: directory, detached: true, env: { ...process.env, NEXT_TELEMETRY_DISABLED: '1', FOUNDRY_API_ORIGIN: `http://127.0.0.1:${upstream.address().port}`, NEXT_PUBLIC_FOUNDRY_PROJECT: 'endoleap' }, stdio: ['ignore', 'pipe', 'pipe'] });
  next.stdout.on('data', chunk => { logs = (logs + chunk).slice(-16000); }); next.stderr.on('data', chunk => { logs = (logs + chunk).slice(-16000); });
  for (let i = 0; i < 120; i++) { if (next.exitCode !== null) throw new Error(logs); try { const r = await fetch(`http://127.0.0.1:${port}/api/foundry/profile`, { signal: AbortSignal.timeout(1000) }); if (r.ok) break; } catch {} await pause(250); }
  chrome = spawn(process.env.CHROME_BIN ?? '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome', ['--headless=new', '--no-first-run', '--disable-background-networking', '--disable-component-update', '--remote-debugging-port=0', `--user-data-dir=${profile}`, 'about:blank'], { stdio: 'ignore' });
  let debugPort;
  for (let i = 0; i < 100; i++) { try { debugPort = Number((await readFile(join(profile, 'DevToolsActivePort'), 'utf8')).split('\n')[0]); break; } catch { await pause(100); } }
  assert.ok(debugPort, 'Chrome did not start');
  const tabs = await fetch(`http://127.0.0.1:${debugPort}/json/list`).then(response => response.json());
  socket = new WebSocket(tabs.find(tab => tab.type === 'page').webSocketDebuggerUrl); await new Promise((resolve, reject) => { socket.onopen = resolve; socket.onerror = reject; });
  let serial = 0; const pending = new Map(), exceptions = [];
  socket.onmessage = event => { const message = JSON.parse(event.data); if(message.method==='Runtime.consoleAPICalled' && message.params.type==='error') console.log('BROWSER ERROR',message.params.args.map(arg=>arg.description??arg.value).join(' ')); if (message.method === 'Runtime.exceptionThrown') exceptions.push(message.params.exceptionDetails.exception?.description ?? message.params.exceptionDetails.text); if (!message.id) return; const p = pending.get(message.id); pending.delete(message.id); message.error ? p.reject(new Error(JSON.stringify(message.error))) : p.resolve(message.result); };
  const call = (method, params = {}) => new Promise((resolve, reject) => { const id = ++serial; pending.set(id, { resolve, reject }); socket.send(JSON.stringify({ id, method, params })); });
  const evaluate = async expression => { const r = await call('Runtime.evaluate', { expression, returnByValue: true, awaitPromise: true }); if (r.exceptionDetails) throw new Error(r.exceptionDetails.exception?.description ?? r.exceptionDetails.text); return r.result?.value; };
  async function until(expression, label) { for (let i = 0; i < 200; i++) { if (exceptions.length) throw new Error(exceptions.join('\n')); if (await evaluate(expression)) return; await pause(100); } throw new Error(label + '\n' + await evaluate('document.body.innerText') + '\n' + logs); }
  await call('Runtime.enable'); await call('Emulation.setDeviceMetricsOverride', { width: 1280, height: 900, deviceScaleFactor: 1, mobile: false });
  const route = `http://127.0.0.1:${port}/dashboard/${workspace}/${root}`;
  await call('Page.navigate', { url: route });
  if(performanceMode){
    await measureRenderer({call,evaluate,documents,root,partition,count:performanceCount,exceptions,reportPath:process.env.HEADLESS_PERFORMANCE_REPORT??join(tmpdir(),'headless-renderer-performance.json')});
  }else if(hooksOnly){await until('typeof window.__runCanvasHookChecks==="function"','hook fixture did not mount');const reports=await evaluate('window.__runCanvasHookChecks()');for(const report of reports)console.log('PASS React hooks: '+report);
  }else{
  await until('!!document.querySelector("[data-headless-canvas][data-model-loading] .react-flow__node[data-id=a]")','first editable model prefix did not open before the gated tail');
  assert.equal(await evaluate('!!document.querySelector(".react-flow__node[data-id=b]")'),false);
  assert.equal(calls.filter(call=>call.method==='POST'&&call.path.endsWith('/model/operations')).length,0);
  assert.equal(await evaluate('document.querySelector("[aria-label=添加文本卡片]").disabled'),true);
  await until('document.querySelector(".react-flow__node[data-id=a]").getBoundingClientRect().x>300','initial partial node remained under the sidebar');
  const partialTextPoint=await evaluate(`(()=>{const r=document.querySelector('.react-flow__node[data-id=a] [aria-label^="单击选中"]').getBoundingClientRect();return{x:r.x+60,y:r.y+30};})()`);
  await call('Input.dispatchMouseEvent',{type:'mousePressed',...partialTextPoint,button:'left',buttons:1,clickCount:2});await call('Input.dispatchMouseEvent',{type:'mouseReleased',...partialTextPoint,button:'left',buttons:0,clickCount:2});
  await until(`document.activeElement===document.querySelector('.react-flow__node[data-id=a] textarea')&&!document.activeElement.readOnly`,'loaded prefix text did not enter edit mode');
  await call('Input.insertText',{text:' partial-local'});const partialText=await evaluate('document.activeElement.value');assert.ok(partialText.endsWith(' partial-local'));assert.equal(calls.filter(call=>call.method==='POST'&&call.path.endsWith('/model/operations')).length,0);
  await evaluate(`window.partialTextarea=document.activeElement;void 0`);
  const previewTransform=await evaluate('document.querySelector("[data-headless-canvas] .react-flow__viewport").style.transform');
  await writeFile('/private/tmp/headless-loading-editable.png',Buffer.from((await call('Page.captureScreenshot',{format:'png'})).data,'base64'));
  releaseFirstModel();
  await until('!!document.querySelector("[data-headless-canvas]:not([data-model-loading])") && document.querySelectorAll(".react-flow__node").length === 2','full model did not finish the partial editor');
  assert.equal(await evaluate('window.partialTextarea.isConnected&&document.activeElement===window.partialTextarea'),true,'tail completion remounted the active text editor');
  assert.equal(await evaluate('document.querySelector("[data-headless-canvas] .react-flow__viewport").style.transform'),previewTransform,'partial viewport was lost');
  for(let i=0;i<100&&documents.get(root).elements.get('a').data.text!==partialText;i++)await pause(20);assert.equal(documents.get(root).elements.get('a').data.text,partialText);
  await call('Input.dispatchKeyEvent',{type:'keyDown',key:'Escape',code:'Escape',windowsVirtualKeyCode:27});await call('Input.dispatchKeyEvent',{type:'keyUp',key:'Escape',code:'Escape',windowsVirtualKeyCode:27});
  await evaluate(`document.querySelector('[aria-label="撤销"]').click()`);for(let i=0;i<100&&documents.get(root).elements.get('a').data.text!=='Editable content';i++)await pause(20);assert.equal(documents.get(root).elements.get('a').data.text,'Editable content');
  console.log('PASS actual GraphPage edits the first prefix before the gated tail, keeps its active textarea/history/viewport and sends only after durable completion');
  assert.equal(calls.some(call => call.path.endsWith('/canvas')), false, 'canonical project read the legacy snapshot');
  assert.equal(await evaluate('!!document.querySelector("[aria-label=画布快捷操作]") && !document.querySelector("[aria-label=展开侧边栏]")'), true);
  const click = label => evaluate(`document.querySelector('[aria-label=${JSON.stringify(label)}]').click()`);
  assert.deepEqual(await evaluate(`(()=>{const canvas=document.querySelector('[data-headless-canvas]');const fire=(key,options={})=>{const e=new KeyboardEvent('keydown',{key,bubbles:true,cancelable:true,...options});canvas.dispatchEvent(e);return e.defaultPrevented;};return [fire('h',{ctrlKey:true}),fire('v',{metaKey:true}),fire('h',{isComposing:true}),fire('F9'),fire('h'),fire('v')];})()`),[false,false,false,false,true,true]);
  console.log('PASS canvas keyboard routing leaves modifiers, IME and unknown keys unclaimed and consumes plain tool shortcuts');

  await click('添加文本卡片'); await until('document.querySelectorAll(".react-flow__node").length === 3', 'create did not render');
  for (let i = 0; i < 100 && documents.get(root).elements.size !== 4; i++) await pause(20);
  assert.equal(documents.get(root).elements.size, 4);
  await click('撤销'); await until('document.querySelectorAll(".react-flow__node").length === 2', 'undo did not render');
  for (let i = 0; i < 100 && documents.get(root).elements.size !== 3; i++) await pause(20);
  assert.equal(documents.get(root).elements.size, 3);
  await click('重做'); await until('document.querySelectorAll(".react-flow__node").length === 3', 'redo did not render');
  for (let i = 0; i < 100 && documents.get(root).elements.size !== 4; i++) await pause(20);
  const beforeDrag = calls.filter(call => call.method === 'POST' && call.path.endsWith('/model/operations')).length;
  await evaluate(`window.inputEvents=[];for(const type of ['pointerdown','mousedown','pointerup','mouseup','pointercancel','lostpointercapture'])window.addEventListener(type,event=>window.inputEvents.push({type,x:event.clientX,y:event.clientY,target:event.target.outerHTML?.slice(0,120)}),true);`);
  const rect = await evaluate('(()=>{const r=document.querySelector(".react-flow__node[data-id=b]").getBoundingClientRect();return {x:r.x+80,y:r.y+30}})()');
  await call('Input.dispatchMouseEvent', { type: 'mousePressed', x: rect.x, y: rect.y, button: 'left', buttons: 1, clickCount: 1 });
  for (let step = 1; step <= 10; step++) await call('Input.dispatchMouseEvent', { type: 'mouseMoved', x: rect.x + step * 5, y: rect.y + step * 3, button: 'left', buttons: 1 });
  await call('Input.dispatchMouseEvent', { type: 'mouseReleased', x: rect.x + 50, y: rect.y + 30, button: 'left', buttons: 0 });
  for (let i = 0; i < 100 && documents.get(root).elements.get('b').geometry.x === 450; i++) await pause(20);
  assert.ok(Math.abs(documents.get(root).elements.get('b').geometry.x - 500) < 1, JSON.stringify({ geometry: documents.get(root).elements.get('b').geometry, rect, writes: calls.filter(call => call.path.endsWith('/model/operations')).map(call => JSON.parse(call.bytes.toString()).operations), inputs: await evaluate('window.inputEvents'), text: await evaluate('document.body.innerText') }));
  assert.equal(calls.filter(call => call.method === 'POST' && call.path.endsWith('/model/operations')).length, beforeDrag + 1, 'pointer frames became document requests');
  const beforeCancel = calls.filter(call => call.method === 'POST' && call.path.endsWith('/model/operations')).length;
  const moved = await evaluate('(()=>{const r=document.querySelector(".react-flow__node[data-id=b]").getBoundingClientRect();return {x:r.x+80,y:r.y+30}})()');
  await call('Input.dispatchMouseEvent', { type: 'mousePressed', x: moved.x, y: moved.y, button: 'left', buttons: 1, clickCount: 1 });
  await call('Input.dispatchMouseEvent', { type: 'mouseMoved', x: moved.x + 35, y: moved.y + 25, button: 'left', buttons: 1 });
  await call('Input.dispatchKeyEvent', { type: 'keyDown', key: 'Escape', code: 'Escape', windowsVirtualKeyCode: 27 });
  await call('Input.dispatchKeyEvent', { type: 'keyUp', key: 'Escape', code: 'Escape', windowsVirtualKeyCode: 27 });
  await call('Input.dispatchMouseEvent', { type: 'mouseReleased', x: moved.x + 35, y: moved.y + 25, button: 'left', buttons: 0 });
  await pause(100); assert.equal(documents.get(root).elements.get('b').geometry.x, 500); assert.equal(calls.filter(call => call.method === 'POST' && call.path.endsWith('/model/operations')).length, beforeCancel);
  const corner = await evaluate(`(()=>{const r=document.querySelector('.react-flow__node[data-id=b] [aria-label="拖动右下角调整大小"]').getBoundingClientRect();return {x:r.x+r.width/2,y:r.y+r.height/2}})()`);
  await call('Input.dispatchMouseEvent', { type: 'mousePressed', x: corner.x, y: corner.y, button: 'left', buttons: 1, clickCount: 1 });
  await call('Input.dispatchMouseEvent', { type: 'mouseMoved', x: corner.x + 20, y: corner.y + 10, button: 'left', buttons: 1 });
  await call('Input.dispatchMouseEvent', { type: 'mouseReleased', x: corner.x + 40, y: corner.y + 20, button: 'left', buttons: 0 });
  for (let i=0;i<100&&documents.get(root).elements.get('b').geometry.width!==300;i++)await pause(20);
  assert.equal(documents.get(root).elements.get('b').geometry.width,300,JSON.stringify({geometry:documents.get(root).elements.get('b').geometry,inputs:await evaluate('window.inputEvents'),text:await evaluate('document.body.innerText')}));assert.equal(documents.get(root).elements.get('b').geometry.height,220);
  assert.equal(calls.filter(call => call.method === 'POST' && call.path.endsWith('/model/operations')).length, beforeCancel+1);
  const textPoint = await evaluate(`(()=>{const r=document.querySelector('.react-flow__node[data-id=b] [aria-label^="单击选中"]').getBoundingClientRect();return {x:r.x+60,y:r.y+30}})()`);
  await call('Input.dispatchMouseEvent', { type: 'mousePressed', ...textPoint, button: 'left', buttons: 1, clickCount: 2 });
  await call('Input.dispatchMouseEvent', { type: 'mouseReleased', ...textPoint, button: 'left', buttons: 0, clickCount: 2 });
  await until(`document.activeElement===document.querySelector('.react-flow__node[data-id=b] textarea')&&!document.activeElement.readOnly`, 'text did not enter edit mode');
  await call('Input.imeSetComposition', { text: '中', selectionStart: 1, selectionEnd: 1 });
  await call('Input.insertText', { text: '中文' });
  for(let i=0;i<100&&!documents.get(root).elements.get('b').data.text.endsWith('中文');i++)await pause(20);
  assert.ok(documents.get(root).elements.get('b').data.text.endsWith('中文'));
  await call('Input.dispatchKeyEvent', { type: 'keyDown', key: 'Escape', code: 'Escape', windowsVirtualKeyCode: 27 });
  await call('Input.dispatchKeyEvent', { type: 'keyUp', key: 'Escape', code: 'Escape', windowsVirtualKeyCode: 27 });
  await click('撤销');
  for(let i=0;i<100&&documents.get(root).elements.get('b').data.text!=='Editable content';i++)await pause(20);
  assert.equal(documents.get(root).elements.get('b').data.text,'Editable content');assert.equal(documents.get(root).elements.get('b').geometry.width,300);
  await until(`[...document.querySelectorAll('[data-headless-canvas] [role="status"]')].some(element=>element.textContent.trim()==='已同步')`,'edits did not settle before hit-test');
  await evaluate('new Promise(resolve=>requestAnimationFrame(()=>requestAnimationFrame(resolve)))');
  // Hit from the pane beyond the native edge interaction stroke, using screen-space tolerance.
  const nearCurve=await evaluate(`(()=>{const path=document.querySelector('.react-flow__edge[data-id="edge"] .react-flow__edge-path');if(!path)return null;const length=path.getTotalLength(),matrix=path.getScreenCTM();for(let t=.1;t<.99;t+=.01){const a=path.getPointAtLength(length*t),b=path.getPointAtLength(length*t+1),p=new DOMPoint(a.x,a.y).matrixTransform(matrix),q=new DOMPoint(b.x,b.y).matrixTransform(matrix),dx=q.x-p.x,dy=q.y-p.y,d=Math.hypot(dx,dy);for(const sign of [-1,1]){const x=p.x-sign*dy/d*11,y=p.y+sign*dx/d*11;if(document.elementFromPoint(x,y)?.classList.contains('react-flow__pane')&&![...document.querySelectorAll('.react-flow__node')].some(node=>{const r=node.getBoundingClientRect();return x>=r.left-13&&x<=r.right+13&&y>=r.top-13&&y<=r.bottom+13;}))return{x,y};}}return null;})()`);
  assert.ok(nearCurve,'no pane point beyond the SVG interaction stroke');
  const beforeHit=calls.filter(call=>call.method==='POST'&&call.path.endsWith('/model/operations')).length;
  await call('Input.dispatchMouseEvent',{type:'mousePressed',...nearCurve,button:'left',buttons:1,clickCount:1});
  await call('Input.dispatchMouseEvent',{type:'mouseReleased',...nearCurve,button:'left',buttons:0,clickCount:1});
  await until(`!!document.querySelector('[aria-label="曲线点 1"]')`,'pane near-curve hit did not select the edge');
  assert.equal(calls.filter(call=>call.method==='POST'&&call.path.endsWith('/model/operations')).length,beforeHit,'read-only hit query created a document operation');
  console.log('PASS screen-tolerance pane hit selects the displayed curve beyond native SVG stroke without a model operation');
  const curveHandle=await evaluate(`(()=>{const r=document.querySelector('[aria-label="曲线点 1"]').getBoundingClientRect();return{x:r.x+r.width/2,y:r.y+r.height/2};})()`);
  assert.equal(await evaluate(`document.elementFromPoint(${curveHandle.x},${curveHandle.y})?.getAttribute('aria-label')`),'曲线点 1','selected curve control must remain hit-testable where a card overlaps');
  const beforeCurve = calls.filter(call => call.method === 'POST' && call.path.endsWith('/model/operations')).length;
  await call('Input.dispatchMouseEvent', { type: 'mousePressed', ...curveHandle, button: 'left', buttons: 1, clickCount: 1 });
  await call('Input.dispatchMouseEvent', { type: 'mouseMoved', x: curveHandle.x+20, y: curveHandle.y+10, button: 'left', buttons: 1 });
  await call('Input.dispatchMouseEvent', { type: 'mouseReleased', x: curveHandle.x+40, y: curveHandle.y+15, button: 'left', buttons: 0 });
  for(let i=0;i<100&&documents.get(root).elements.get('edge').path.knots[0].position.x!==440;i++)await pause(20);
  assert.deepEqual(documents.get(root).elements.get('edge').path.knots[0].position,{x:440,y:265},JSON.stringify({inputs:await evaluate('window.inputEvents'),text:await evaluate('document.body.innerText'),writes:calls.filter(call=>call.method==='POST'&&call.path.endsWith('/model/operations')).map(call=>JSON.parse(call.bytes.toString()).operations)}));
  assert.equal(calls.filter(call => call.method === 'POST' && call.path.endsWith('/model/operations')).length,beforeCurve+1);
  console.log('PASS actual GraphPage chooses canonical editor; create/undo/redo, drag/resize/curve final coordinates, Escape and IME text history publish correctly');
  await call('Input.dispatchMouseEvent',{type:'mousePressed',x:1050,y:650,button:'left',buttons:1,clickCount:1});await call('Input.dispatchMouseEvent',{type:'mouseReleased',x:1050,y:650,button:'left',buttons:0,clickCount:1});await pause(50);
  const recoveryPoint=await evaluate(`(()=>{const r=document.querySelector('.react-flow__node[data-id=b] [aria-label^="单击选中"]').getBoundingClientRect();return {x:r.x+50,y:r.y+30}})()`);
  await call('Input.dispatchMouseEvent',{type:'mousePressed',...recoveryPoint,button:'left',buttons:1,clickCount:2});await call('Input.dispatchMouseEvent',{type:'mouseReleased',...recoveryPoint,button:'left',buttons:0,clickCount:2});
  await until(`document.activeElement===document.querySelector('.react-flow__node[data-id=b] textarea')&&!document.activeElement.readOnly`,'recovery edit did not open');
  rejectNextEdit=true;await call('Input.insertText',{text:'Local recovery'});await until(`!!document.querySelector('[aria-label="处理同步修改"]')`,'rejected content did not expose recovery');
  const localRecoveryText=await evaluate(`document.querySelector('.react-flow__node[data-id=b] textarea').value`),rejectedId=rejectedEdit.request_id;
  await click('处理同步修改');await until(`!!document.querySelector('select[aria-label="处理第1项修改"]')`,'recovery choices did not load');
  assert.ok(await evaluate(`document.querySelector('[role=dialog]').innerText.includes('Remote reviewed')`),'review omitted the server value');
  await evaluate(`(()=>{const select=document.querySelector('select[aria-label="处理第1项修改"]');select.value='keep-local';select.dispatchEvent(new Event('change',{bubbles:true}));})()`);
  await click('预览处理方案');await until(`!document.querySelector('[aria-label="应用处理方案"]').disabled`,'reviewed recovery plan did not become applicable');await click('应用处理方案');
  await until(`!document.querySelector('[role=dialog]')`,'recovery dialog did not close after persistence');
  for(let i=0;i<100&&documents.get(root).elements.get('b').data.text!==localRecoveryText;i++)await pause(20);assert.equal(documents.get(root).elements.get('b').data.text,localRecoveryText);
  const recompiled=calls.filter(call=>call.method==='POST'&&call.path.endsWith('/model/operations')).at(-1),recompiledBody=JSON.parse(recompiled.bytes.toString());assert.notEqual(recompiledBody.request_id,rejectedId);assert.notEqual(recompiledBody.operations[0].id,rejectedEdit.operations[0].id);assert.equal(recompiledBody.operations[0].changes[0].before,'Remote reviewed');
  await click('撤销');for(let i=0;i<100&&documents.get(root).elements.get('b').data.text!=='Remote reviewed';i++)await pause(20);assert.equal(documents.get(root).elements.get('b').data.text,'Remote reviewed');
  console.log('PASS actual recovery dialog reviews remote/local content, recompiles with new identities, saves before dispatch and preserves the reviewed undo baseline');
  rejectNextEdit=true;await click('添加文本卡片');await until(`!!document.querySelector('[aria-label="处理同步修改"]')`,'rejected creation did not expose recovery');const createdId=rejectedEdit.operations[0].changes.find(change=>change.kind==='element'&&change.before===null).id;
  await click('处理同步修改');await until(`!!document.querySelector('select[aria-label="处理第1项修改"]')&&document.querySelector('[role=dialog]').innerText.includes('创建元素')`,'creation review omitted the structural change');
  await evaluate(`(()=>{const select=document.querySelector('select[aria-label="处理第1项修改"]');select.value='keep-local';select.dispatchEvent(new Event('change',{bubbles:true}));})()`);await click('预览处理方案');await until(`document.querySelector('[role=dialog]').innerText.includes('关联结构变更')&&!document.querySelector('[aria-label="应用处理方案"]').disabled`,'structural plan did not expose related changes');await click('应用处理方案');await until(`!document.querySelector('[role=dialog]')`,'structural review did not finish');for(let i=0;i<100&&!documents.get(root).elements.has(createdId);i++)await pause(20);assert.ok(documents.get(root).elements.has(createdId));rejectNextEdit=true;await click('撤销');await until(`!!document.querySelector('[aria-label="处理同步修改"]')`,'rejected undo did not expose recovery');
  await click('处理同步修改');await until(`!!document.querySelector('select[aria-label="处理第1项修改"]')&&document.querySelector('[role=dialog]').innerText.includes('未同步的撤销')`,'undo review did not identify the history action');assert.ok(await evaluate(`document.querySelector('select[aria-label="处理第1项修改"]').innerText.includes('保留这次撤销')`));
  await evaluate(`(()=>{const select=document.querySelector('select[aria-label="处理第1项修改"]');select.value='keep-local';select.dispatchEvent(new Event('change',{bubbles:true}));})()`);await click('预览处理方案');await until(`document.querySelector('[role=dialog]').innerText.includes('重做记录由')&&!document.querySelector('[aria-label="应用处理方案"]').disabled`,'undo recovery omitted its redo stack');await click('应用处理方案');await until(`!document.querySelector('[role=dialog]')`,'undo recovery did not finish');for(let i=0;i<100&&documents.get(root).elements.has(createdId);i++)await pause(20);assert.equal(documents.get(root).elements.has(createdId),false);
  await click('重做');for(let i=0;i<100&&!documents.get(root).elements.has(createdId);i++)await pause(20);assert.equal(documents.get(root).elements.get(createdId).incarnation,2);await click('撤销');for(let i=0;i<100&&documents.get(root).elements.has(createdId);i++)await pause(20);assert.equal(documents.get(root).elements.has(createdId),false);
  console.log('PASS actual rejected undo review labels the traversal, previews both stacks, replans deletion and retains redo with a new lifecycle');
  console.log('PASS actual structural recovery dialog reviews a rejected creation and related changes, applies it with a new identity and retains undo');
  const selectB=async()=>{await call('Input.dispatchMouseEvent',{type:'mousePressed',x:1050,y:650,button:'left',buttons:1,clickCount:1});await call('Input.dispatchMouseEvent',{type:'mouseReleased',x:1050,y:650,button:'left',buttons:0,clickCount:1});await pause(50);const point=await evaluate(`(()=>{const r=document.querySelector('.react-flow__node[data-id=b]').getBoundingClientRect();return {x:r.x+r.width/2,y:r.y+r.height-30}})()`);await call('Input.dispatchMouseEvent',{type:'mousePressed',...point,button:'left',buttons:1,clickCount:1});await call('Input.dispatchMouseEvent',{type:'mouseReleased',...point,button:'left',buttons:0,clickCount:1});await until(`!document.querySelector('[aria-label="AI 创作"]').disabled`,'AI tool did not accept the selected element');};
  await selectB();await click('AI 创作');await until(`!!document.querySelector('[aria-label="AI 模型"] option[value="fixture-text"]')`,'AI catalog did not load through the host');
  await evaluate(`(()=>{const input=document.querySelector('[aria-label="AI 指令"]');Object.getOwnPropertyDescriptor(HTMLTextAreaElement.prototype,'value').set.call(input,'Summarize this content');input.dispatchEvent(new Event('input',{bubbles:true}));})()`);
  await until(`!document.querySelector('[aria-label="执行 AI"]').disabled`,'AI command did not become executable');await click('执行 AI');
  await until(`document.body.innerText.includes('已受理')`,'AI admission did not persist');assert.equal(aiRuns.size,1);
  const visualMetric=`(()=>{const node=document.querySelector('.react-flow__node[data-id=b]'),frame=[...node.querySelectorAll('div')].find(element=>element.style.zoom);return {zoom:frame.style.zoom,width:frame.style.width,height:frame.style.height,font:getComputedStyle(node.querySelector('textarea')).fontSize}})()`,beforeVisual=await evaluate(visualMetric);
  await evaluate(`document.querySelector('a[href="/dashboard/${workspace}/${other}"]').click()`);await until(`location.pathname.endsWith('${other}')&&document.querySelectorAll('.react-flow__node').length===0`,'AI view detach failed');
  const run=aiRuns.get(id(700)),beforeAI=documents.get(root),beforeNode=beforeAI.elements.get('b');
  const frame={...node('relocation-frame',root,30),componentId:'frame',geometry:{x:30,y:50,width:1000,height:600,rotation:0},data:{title:'Relocated partition',text:'',presentation:{contentScale:2}}};
  const movedModel=applyChanges(beforeAI,[{kind:'element',id:frame.id,before:null,after:frame},{kind:'canvas',id:partition,before:null,after:{id:partition,parent:{canvasId:root,entryElementId:frame.id}}},{kind:'field',target:{id:'b',incarnation:1},field:'ownerCanvasId',before:root,after:partition},{kind:'field',target:{id:'b',incarnation:1},field:'geometry',before:beforeNode.geometry,after:{...beforeNode.geometry,x:(beforeNode.geometry.x-54)/2,y:(beforeNode.geometry.y-86)/2,width:beforeNode.geometry.width/2,height:beforeNode.geometry.height/2}},{kind:'field',target:{id:'b',incarnation:1},field:'data.presentation',before:beforeNode.data.presentation??null,beforePresent:Object.hasOwn(beforeNode.data,'presentation'),after:{...beforeNode.data.presentation,unitScale:.5},afterPresent:true}]);
  const generated=applyChanges(movedModel,[{kind:'field',target:{id:'b',incarnation:1},field:'data.text',before:beforeNode.data.text,after:'Generated while another canvas was open',beforePresent:true,afterPresent:true}]);documents.set(root,generated);versions.set(root,versions.get(root)+1);versions.set(partition,2);run.status='succeeded';
  run.events.push({seq:3,run_id:id(700),type:'step.output',step_id:'step-b',board_id:root,node_id:'b',output:{output_id:id(701),kind:'text',text:'Generated while another canvas was open'}},{seq:4,run_id:id(700),type:'step.applied',step_id:'step-b',board_id:partition,origin_board_id:root,canonical_root:root,node_id:'b',canvas_version:versions.get(partition),document_format_version:1,target_incarnation:1,model:model(generated,true)},{seq:5,run_id:id(700),type:'run.completed',status:'succeeded'});
  const pollsBefore=calls.filter(call=>call.path.includes('/ai/runs/')).length;
  for(let i=0;i<200&&calls.filter(call=>call.path.includes('/ai/runs/')).length===pollsBefore;i++)await pause(20);
  assert.ok(calls.filter(call=>call.path.includes('/ai/runs/')).length>pollsBefore,'view detach stopped persistent AI polling');await pause(200);
  assert.equal(await evaluate('document.querySelectorAll(".react-flow__node").length'),0,'AI output leaked into a different project view');
  await call('Page.reload');await until(`location.pathname.endsWith('${other}')&&!!document.querySelector('[data-headless-canvas]')`,'other project reload failed');
  await evaluate(`document.querySelector('a[href="/dashboard/${workspace}/${root}"]').click()`);await until(`!!document.querySelector('.react-flow__node[data-id=b]')&&document.querySelector('.react-flow__node[data-id=b] textarea')?.value==='Generated while another canvas was open'`,'AI output did not survive reload');
  await selectB();await click('AI 创作');await until(`document.body.innerText.includes('已更新当前元素')`,'durable RunRecord did not recover');await click('关闭 AI 工具');
  assert.equal(calls.filter(call=>call.method==='POST'&&call.path.endsWith('/ai/runs')).length,1,'AI recovery invoked generation twice');assert.equal(documents.get(root).elements.get('b').geometry.width,150);assert.equal(documents.get(root).elements.get('b').data.presentation.unitScale,.5);assert.deepEqual(await evaluate(visualMetric),beforeVisual,'normalized units changed actual rendered size or typography');assert.equal(documents.get(root).elements.get('b').ownerCanvasId,partition);assert.equal(await evaluate(`document.querySelectorAll('.react-flow__node[data-id=b]').length`),1);
  console.log('PASS actual AI panel follows a scaled owner move with stable rendered size/typography, polls after navigation, and restores one element/RunRecord without re-execution');
  await selectB();await click('AI 创作');await until(`!!document.querySelector('[aria-label="执行 AI"]')&&!document.querySelector('[aria-label="执行 AI"]').disabled`,'AI action did not reopen');await click('执行 AI');await until(`!!document.querySelector('[aria-label="取消生成"]')`,'cancel control did not appear');await click('取消生成');await until(`document.body.innerText.includes('已取消生成')`,'durable cancellation did not finish');assert.equal(documents.get(root).elements.get('b').data.text,'Generated while another canvas was open');
  await until(`!document.querySelector('[aria-label="执行 AI"]').disabled`,'cancelled run did not release execution');await click('执行 AI');
  for(let i=0;i<100&&!aiRuns.has(id(720));i++)await pause(20);assert.ok(aiRuns.has(id(720)));
  const conflicted=aiRuns.get(id(720));conflicted.status='conflict';conflicted.events.push({seq:3,run_id:id(720),type:'step.output',step_id:'step-b',board_id:partition,node_id:'b',output:{output_id:id(721),kind:'text',text:'Chosen conflict result'}},{seq:4,run_id:id(720),type:'step.conflict',step_id:'step-b',board_id:partition,node_id:'b',status:'conflict',error:'target_changed'},{seq:5,run_id:id(720),type:'run.completed',status:'conflict'});
  await until(`[...document.querySelectorAll('button')].some(button=>button.textContent==='使用此结果替换当前内容')`,'conflict result did not expose explicit application');await evaluate(`[...document.querySelectorAll('button')].find(button=>button.textContent==='使用此结果替换当前内容').click()`);
  await until(`document.querySelector('.react-flow__node[data-id=b] textarea').value==='Chosen conflict result'`,'chosen output was not optimistic');await click('撤销');await until(`document.querySelector('.react-flow__node[data-id=b] textarea').value==='Generated while another canvas was open'`,'unknown apply could not be locally undone');releaseApply();
  for(let i=0;i<200&&documents.get(root).elements.get('b').data.text!=='Generated while another canvas was open';i++)await pause(20);assert.equal(documents.get(root).elements.get('b').data.text,'Generated while another canvas was open');await click('重做');
  for(let i=0;i<200&&documents.get(root).elements.get('b').data.text!=='Chosen conflict result';i++)await pause(20);assert.equal(documents.get(root).elements.get('b').data.text,'Chosen conflict result');assert.equal(calls.filter(call=>call.method==='POST'&&call.path.endsWith('/cancel')).length,1);assert.equal(calls.filter(call=>call.method==='POST'&&call.path.endsWith('/apply')).length,1);assert.equal(calls.filter(call=>call.method==='POST'&&call.path.endsWith('/ai/runs')).length,3);await click('关闭 AI 工具');
  console.log('PASS actual AI cancellation and optimistic conflict application use durable actions; undo/redo while awaiting acknowledgment never regenerate');
  await evaluate(`(async()=>{const canvas=new OffscreenCanvas(4,2);canvas.getContext('2d').fillRect(0,0,4,2);const bytes=await canvas.convertToBlob({type:'image/png'});const transfer=new DataTransfer();transfer.items.add(new File([bytes],'pixel.png',{type:'image/png'}));const input=document.querySelector('[data-headless-canvas] input[type=file]');input.files=transfer.files;input.dispatchEvent(new Event('change',{bubbles:true}));})()`);
  await until(`document.querySelectorAll('.react-flow__node').length === 5 && [...document.querySelectorAll('[data-headless-canvas] img')].some(image=>image.getAttribute('src')?.startsWith('blob:'))`, 'pending image did not appear before upload');
  const pendingImageId=await evaluate(`document.querySelector('[data-headless-canvas] img[src^="blob:"]').closest('.react-flow__node').getAttribute('data-id')`);
  await until(`document.querySelector('.react-flow__node[data-id="${pendingImageId}"]').style.height==='130px'`,'default image size did not automatically use locally decoded 4:2 aspect ratio before upload ACK');
  await evaluate(`document.querySelector('.react-flow__node[data-id="${pendingImageId}"]').dispatchEvent(new MouseEvent('click',{bubbles:true}))`);await until(`!document.querySelector('[aria-label="按图片比例调整"]').disabled`,'decoded image dimensions were not available before upload ACK');await click('按图片比例调整');
  await click('撤销');await until(`!document.querySelector('.react-flow__node[data-id="${pendingImageId}"]')`,'one undo did not remove the automatically sized creation');
  await click('重做');await until(`document.querySelector('.react-flow__node[data-id="${pendingImageId}"]')?.style.height==='130px'`,'redo lost the enriched creation dimensions');assert.equal(uploads.length<=1,true);
  await until(`(()=>{const node=document.querySelector('.react-flow__node[data-id="${pendingImageId}"]');const content=[...node.querySelectorAll('div')].find(element=>element.style.zoom);return content?.style.height==='130px';})()`,'image content retained a stale measured height after automatic sizing and redo');
  console.log('PASS default image sizing precedes upload ACK; creation undo/redo includes decoded dimensions without a second history unit or upload');
  const screenshot=await call('Page.captureScreenshot',{format:'png'});await writeFile('/private/tmp/headless-canvas-integration.png',Buffer.from(screenshot.data,'base64'));
  for (let i = 0; i < 100 && !uploads.length; i++) await pause(20);
  assert.equal(uploads.length, 1); assert.equal(documents.get(root).elements.size, 5);
  await evaluate(`document.querySelector('a[href="/dashboard/${workspace}/${other}"]').click()`);
  await until(`location.pathname.endsWith('${other}') && !!document.querySelector('[data-headless-canvas]') && document.querySelectorAll('.react-flow__node').length === 0`, 'other board did not open');
  releaseUpload();
  for (let i = 0; i < 200 && documents.get(root).elements.size !== 6; i++) await pause(20);
  assert.equal(documents.get(root).elements.size, 6, 'view detach aborted the upload or document operation');
  assert.equal(await evaluate('document.querySelectorAll(".react-flow__node").length'), 0, 'late result appeared on the wrong board');
  await click('复用其它画布图片');await until(`!!document.querySelector('[role="dialog"] [aria-label="添加图片：视觉参考"]')`,'other opened project image did not appear in the picker');
  const pickerScreenshot=await call('Page.captureScreenshot',{format:'png'});await writeFile('/private/tmp/headless-resource-picker.png',Buffer.from(pickerScreenshot.data,'base64'));
  denyAssetMetadata=true;await click('添加图片：视觉参考');await until(`document.querySelector('[role="dialog"] [role="alert"]')?.textContent.includes('访问权限')`,'fresh authorization rejection was not readable');assert.equal(documents.get(other).elements.size,0);assert.equal(await evaluate(`document.querySelector('[aria-label="撤销"]').disabled`),true);denyAssetMetadata=false;
  metadataWait=new Promise(resolve=>releaseMetadata=resolve);const metadataCalls=calls.filter(call=>call.path.includes('/assets/metadata/')).length;await click('添加图片：视觉参考');for(let i=0;i<100&&calls.filter(call=>call.path.includes('/assets/metadata/')).length===metadataCalls;i++)await pause(20);assert.ok(calls.filter(call=>call.path.includes('/assets/metadata/')).length>metadataCalls,'picker did not start authorization');await call('Input.dispatchKeyEvent',{type:'keyDown',key:'Escape',code:'Escape',windowsVirtualKeyCode:27});await call('Input.dispatchKeyEvent',{type:'keyUp',key:'Escape',code:'Escape',windowsVirtualKeyCode:27});await until(`!document.querySelector('[role="dialog"]')`,'Escape did not close the resource picker');releaseMetadata();metadataWait=undefined;await pause(100);assert.equal(documents.get(other).elements.size,0,'closed picker admitted a late authorization result');
  await click('复用其它画布图片');await until(`!!document.querySelector('[role="dialog"] [aria-label="添加图片：视觉参考"]')`,'resource picker did not reopen');await click('添加图片：视觉参考');await until(`!document.querySelector('[role="dialog"]')&&document.querySelectorAll('.react-flow__node').length===1`,'adopted image did not appear');for(let i=0;i<100&&documents.get(other).elements.size!==1;i++)await pause(20);const adopted=[...documents.get(other).elements.values()][0];assert.equal(adopted.data.assetId,uploads[0].id);assert.equal(uploads.length,1,'cross-project picker uploaded a duplicate');assert.equal(adopted.geometry.width/adopted.geometry.height,2);
  await click('撤销');for(let i=0;i<100&&documents.get(other).elements.size;i++)await pause(20);assert.equal(documents.get(other).elements.size,0);await click('重做');for(let i=0;i<100&&documents.get(other).elements.get(adopted.id)?.incarnation!==2;i++)await pause(20);assert.equal(documents.get(other).elements.get(adopted.id).incarnation,2);assert.equal(uploads.length,1);console.log('PASS cross-project resource picker reauthorizes, cancels a late result, creates one shared image and supports undo/redo without uploading again');

  await evaluate(`document.querySelector('a[href="/dashboard/${workspace}/${root}"]').click()`);
  await until('document.querySelectorAll(".react-flow__node").length === 5', 'returning project lost its engine');
  assert.equal(uploads.length, 1);
  await call('Page.reload'); await until('document.querySelectorAll(".react-flow__node").length === 5', 'page reload did not recover the document');
  assert.equal(uploads.length, 1); assert.equal(calls.some(call => call.path.endsWith('/canvas')), false);
  console.log('PASS pending image displays before upload; navigation preserves work and fences late view updates; reload retains resource identity');
  console.log('PASS canvas floating controls remain visible while the sidebar is expanded');
  const hookReports=await evaluate('window.__runCanvasHookChecks()');for(const report of hookReports)console.log('PASS React hooks: '+report);
  const beforeImport=documents.get(root).elements.size,importRecord={kind:'element',key:'ui-import',record:{id:'ui-import',incarnation:1,structure:'node',ownerCanvasId:'$target',componentId:'text',dataVersion:1,data:{title:'Imported NDJSON node',text:'Visible before ACK'},geometry:{x:700,y:450,width:240,height:160,rotation:0}}},nativeText=JSON.stringify(importRecord)+'\n{bad}';
  await evaluate(`(()=>{const transfer=new DataTransfer();transfer.items.add(new File([${JSON.stringify(nativeText)}],'canvas.ndjson',{type:'application/x-ndjson'}));const input=document.querySelector('[data-canvas-import]');input.files=transfer.files;input.dispatchEvent(new Event('change',{bubbles:true}));})()`);
  await until(`document.querySelectorAll('.react-flow__node').length===6&&document.body.innerText.includes('部分加入')`,'native import did not show its successful prefix and partial report');
  for(let i=0;i<100&&!importWriteSeen;i++)await pause(20);assert.ok(importWriteSeen);assert.equal(documents.get(root).elements.size,beforeImport,'import waited for its backend before displaying content');
  await evaluate(`[...document.querySelectorAll('summary')].find(summary=>summary.textContent.includes('条未加入记录')).click()`);await until(`document.body.innerText.includes('记录格式错误')`,'import failure reason was hidden');
  const importScreenshot=await call('Page.captureScreenshot',{format:'png'});await writeFile('/private/tmp/headless-import-integration.png',Buffer.from(importScreenshot.data,'base64'));releaseImport();
  for(let i=0;i<200&&documents.get(root).elements.size!==beforeImport+1;i++)await pause(20);assert.equal(documents.get(root).elements.size,beforeImport+1);await pause(200);await call('Page.reload');await until(`document.querySelectorAll('.react-flow__node').length===6&&document.querySelector('[aria-label="画布导入"]')?.textContent.includes('部分加入')`,'import task and content did not recover after reload');
  const beforeSourceCollection=calls.filter(call=>call.method==='POST'&&call.path.endsWith('/model/operations')).length;
  await until(`typeof window.__headlessCollectSources==='function'`,'fixture Host action was not installed');const sourceCollection=await evaluate(`window.__headlessCollectSources()`);assert.equal(sourceCollection.purgedIds.length,1);
  await evaluate(`(()=>{const details=document.querySelector('[aria-label="画布导入"] details');if(!details.open)details.querySelector('summary').click();})()`);
  await until(`document.body.innerText.includes('本地源文件已清理')`,'source collection status was not displayed');assert.equal(calls.filter(call=>call.method==='POST'&&call.path.endsWith('/model/operations')).length,beforeSourceCollection,'source GC created a document operation');
  const sourceScreenshot=await call('Page.captureScreenshot',{format:'png'});await writeFile('/private/tmp/headless-import-source-collection.png',Buffer.from(sourceScreenshot.data,'base64'));await call('Page.reload');await until(`document.querySelectorAll('.react-flow__node').length===6&&document.querySelector('[aria-label="画布导入"]')?.textContent.includes('本地源文件已清理')`,'retired source status/content did not recover');
  console.log('PASS Host-triggered source collection displays its status, survives reload and creates zero model operations');
  await click('撤销');await until(`document.querySelectorAll('.react-flow__node').length===5`,'import undo did not remove its successful content');await pause(200);await call('Page.reload');await until(`document.querySelectorAll('.react-flow__node').length===5`,'import recovered an undone record');
  console.log('PASS actual NDJSON import displays before backend ACK, reports a failed record, restores task/source state and never revives undone content');
  await evaluate(`document.querySelector('.react-flow__node[data-id=b]').dispatchEvent(new MouseEvent('click',{bubbles:true}))`);
  await until(`!document.querySelector('[aria-label="深复制选中内容"]').disabled`,'copy selection button remained disabled');
  await click('深复制选中内容');await until(`document.querySelectorAll('.react-flow__node').length===6&&document.querySelector('[aria-label="画布导入"]').textContent.includes('复制选中内容')`,'copy did not publish through the durable task pipeline');
  await until(`document.querySelector('[aria-label="深复制选中内容"]')&&!document.querySelector('[aria-label="正在准备复制"]')`,'copy preparation did not finish');
  await pause(300);await call('Page.reload');await until(`document.querySelectorAll('.react-flow__node').length===6&&document.querySelector('[aria-label="画布导入"]').textContent.includes('复制选中内容')`,'copy task did not recover after reload');
  await click('撤销');await until(`document.querySelectorAll('.react-flow__node').length===5`,'copy history did not undo its published content');await pause(200);await call('Page.reload');await until(`document.querySelectorAll('.react-flow__node').length===5`,'copy replay revived an undone record');
  console.log('PASS actual deep copy toolbar action publishes a durable task, survives reload and does not revive its undone content');

  // Portalled frame-title drafts are not represented by a node editing mode.
  await evaluate(`document.querySelector('.react-flow__node[data-id="relocation-frame"]').dispatchEvent(new MouseEvent('click',{bubbles:true}))`);
  await until(`!!document.querySelector('[aria-label="分区名称"]')`,'frame title editor did not open');
  await click('收起子画布');await until(`!document.querySelector('.react-flow__node[data-id=b]')&&document.querySelectorAll('.react-flow__edge').length>0`,'collapsed partition did not render its upper-canvas connection');assert.equal(documents.get(root).elements.get('edge').target.elementId,'b');assert.ok(documents.get(root).elements.has('b'));await click('展开子画布');await until(`!!document.querySelector('.react-flow__node[data-id=b] textarea')`,'expanding partition did not restore the member');
  console.log('PASS collapsed partitions retain model endpoints and render upper-canvas connections through headless frame anchors');
  await evaluate(`(()=>{window.pinnedFrameTitle=document.querySelector('[aria-label="分区名称"]');window.pinnedFrameTitle.focus();window.pinnedFrameTitle.select();})()`);await call('Input.insertText',{text:'Pinned partition draft'});
  const panFar=`document.querySelector('.react-flow__pane').dispatchEvent(new WheelEvent('wheel',{deltaX:20000,deltaY:20000,bubbles:true,cancelable:true}))`,panHome=`(()=>{const matrix=new DOMMatrix(getComputedStyle(document.querySelector('.react-flow__viewport')).transform);document.querySelector('.react-flow__pane').dispatchEvent(new WheelEvent('wheel',{deltaX:matrix.e/.5,deltaY:matrix.f/.5,bubbles:true,cancelable:true}));})()`;
  await evaluate(panFar);await pause(250);assert.equal(await evaluate(`window.pinnedFrameTitle.isConnected&&document.activeElement===window.pinnedFrameTitle&&window.pinnedFrameTitle.value==='Pinned partition draft'`),true,'viewport culling discarded an unsaved frame title');
  await evaluate('window.pinnedFrameTitle.blur()');for(let i=0;i<100&&documents.get(root).elements.get('relocation-frame').data.title!=='Pinned partition draft';i++)await pause(20);assert.equal(documents.get(root).elements.get('relocation-frame').data.title,'Pinned partition draft');
  await until(`document.querySelectorAll('.react-flow__node').length===0`,'viewport culling did not resume after title blur');await evaluate(panHome);await until(`!!document.querySelector('.react-flow__node[data-id=b] textarea')`,'panning back did not remount the node');
  await evaluate(`(()=>{const node=document.querySelector('.react-flow__node[data-id=b]');node.dispatchEvent(new MouseEvent('click',{bubbles:true}));node.querySelector('[aria-label^="单击选中"]').dispatchEvent(new MouseEvent('dblclick',{bubbles:true}));})()`);
  await until(`document.activeElement===document.querySelector('.react-flow__node[data-id=b] textarea')&&!document.activeElement.readOnly`,'text editor did not enter pinned mode');await evaluate('window.pinnedText=document.activeElement; void 0');await call('Input.imeSetComposition',{text:'保',selectionStart:1,selectionEnd:1});await evaluate(panFar);await pause(250);
  assert.equal(await evaluate(`window.pinnedText.isConnected&&document.activeElement===window.pinnedText&&window.pinnedText.value.includes('保')`),true,'viewport culling interrupted active IME');await call('Input.insertText',{text:'保留输入'});for(let i=0;i<100&&!documents.get(root).elements.get('b').data.text.endsWith('保留输入');i++)await pause(20);assert.ok(documents.get(root).elements.get('b').data.text.endsWith('保留输入'));
  await call('Input.dispatchKeyEvent',{type:'keyDown',key:'Escape',code:'Escape',windowsVirtualKeyCode:27});await call('Input.dispatchKeyEvent',{type:'keyUp',key:'Escape',code:'Escape',windowsVirtualKeyCode:27});await until(`document.querySelectorAll('.react-flow__node').length===0`,'viewport culling did not resume after IME editing');await evaluate(panHome);await until(`!!document.querySelector('.react-flow__node[data-id=b] textarea')`,'edited node did not remount');assert.ok(await evaluate(`document.querySelector('.react-flow__node[data-id=b] textarea').value.endsWith('保留输入')`));
  console.log('PASS native viewport culling retains unsaved portalled frame titles and active IME across pan, then resumes and remounts saved content');

  // Read a fresh project whose known envelope contains opaque component/version payloads.
  const opaqueRoot=id(800),opaqueChild=id(801),opaqueU={...node('opaque-u',opaqueRoot,50),componentId:'plugin:future',dataVersion:9,data:{title:'Opaque source',ports:{find:'future field'},presentation:{unitScale:'future'},assetId:'opaque-asset',__headlessFallback:{handles:'untrusted'},opaque:{preserve:true}}},opaqueV={...node('opaque-v',opaqueRoot,400),dataVersion:99,data:{title:'Future card',text:{preserve:true},ports:'future field'}},opaqueFrame={...node('opaque-frame',opaqueRoot,100),componentId:'frame',dataVersion:99,geometry:{x:100,y:450,width:350,height:220,rotation:0},data:{title:'Future partition',ports:{preserve:true},presentation:{unitScale:'future'}}},opaqueKnown=node('opaque-known',opaqueRoot,800),opaqueMember=node('opaque-member',opaqueChild,20),opaqueEdge={id:'opaque-edge',incarnation:1,structure:'connection',componentId:'plugin:connection',dataVersion:9,ownerCanvasId:opaqueRoot,source:{elementId:opaqueU.id,portId:'custom-out'},target:{elementId:opaqueV.id,portId:'custom-in'},path:{type:'future',preserve:true},data:{appearance:{color:{preserve:true}}}},regularEdge={...opaqueEdge,id:'opaque-regular',componentId:'connection',dataVersion:1,target:{elementId:opaqueKnown.id,portId:'left'},path:null,data:{}},partitionEdge={...regularEdge,id:'opaque-partition',source:{elementId:opaqueKnown.id,portId:'bottom'},target:{elementId:opaqueMember.id}};
  const opaqueOriginal=createDocument(opaqueRoot,[{id:opaqueRoot,parent:null},{id:opaqueChild,parent:{canvasId:opaqueRoot,entryElementId:opaqueFrame.id}}],[opaqueU,opaqueV,opaqueFrame,opaqueKnown,opaqueMember,opaqueEdge,regularEdge,partitionEdge]);documents.set(opaqueRoot,opaqueOriginal);versions.set(opaqueRoot,1);versions.set(opaqueChild,1);boards.push({id:opaqueRoot,workspace_id:workspace,kind:'board',version:1,title:'Compatibility board'});
  await call('Page.navigate',{url:`http://127.0.0.1:${port}/dashboard/${workspace}/${opaqueRoot}`});await until(`document.querySelectorAll('[aria-label="暂不支持编辑的元素"]').length===3&&document.querySelectorAll('.react-flow__edge').length===3`,'opaque placeholders or their original connections did not render');
  assert.equal(await evaluate(`document.querySelectorAll('.react-flow__node').length`),4);assert.equal(await evaluate(`!!document.querySelector('.react-flow__node[data-id="opaque-member"]')`),false);assert.equal(await evaluate(`document.querySelector('.react-flow__node[data-id="opaque-u"]').classList.contains('draggable')`),false);assert.equal(await evaluate(`document.querySelector('.react-flow__node[data-id="opaque-u"]').querySelectorAll('textarea,input').length`),0);assert.ok(await evaluate(`[...document.querySelector('.react-flow__node[data-id="opaque-u"]').querySelectorAll('[data-handleid]')].some(handle=>handle.dataset.handleid==='custom-out'&&!handle.classList.contains('connectablestart')&&!handle.classList.contains('connectableend'))`));
  const opaqueBorder=await evaluate(`getComputedStyle(document.querySelector('[data-id="opaque-u"] [role=note]')).borderColor`);await evaluate(`document.querySelector('.react-flow__node[data-id="opaque-u"]').dispatchEvent(new MouseEvent('click',{bubbles:true}))`);await until(`document.querySelector('.react-flow__node[data-id="opaque-u"]').classList.contains('selected')`,'opaque selection did not publish');assert.notEqual(await evaluate(`getComputedStyle(document.querySelector('[data-id="opaque-u"] [role=note]')).borderColor`),opaqueBorder,'placeholder selection was not visible');
  await evaluate(`(()=>{const card=document.querySelector('.react-flow__node[data-id="opaque-known"]');card.dispatchEvent(new MouseEvent('click',{bubbles:true}));card.querySelector('[aria-label^="单击选中"]').dispatchEvent(new MouseEvent('dblclick',{bubbles:true}));})()`);await until(`document.activeElement===document.querySelector('.react-flow__node[data-id="opaque-known"] textarea')&&!document.activeElement.readOnly`,'known neighbour was not editable');await evaluate('document.activeElement.select()');await call('Input.insertText',{text:'Known edit with opaque neighbours'});await evaluate('document.activeElement.blur()');for(let i=0;i<100&&documents.get(opaqueRoot).elements.get('opaque-known').data.text!=='Known edit with opaque neighbours';i++)await pause(20);assert.equal(documents.get(opaqueRoot).elements.get('opaque-known').data.text,'Known edit with opaque neighbours');for(const record of [opaqueU,opaqueV,opaqueFrame,opaqueEdge])assert.deepEqual(documents.get(opaqueRoot).elements.get(record.id),record);assert.equal(calls.some(call=>call.path.endsWith('/assets/opaque-asset')),false);
  await call('Page.reload');await until(`document.querySelectorAll('[aria-label="暂不支持编辑的元素"]').length===3&&document.querySelectorAll('.react-flow__edge').length===3`,'opaque content or connections did not survive recovery');assert.equal(documents.get(opaqueRoot).elements.get('opaque-partition').target.elementId,'opaque-member');
  await click('适应画布');await pause(100);await click('缩小');await pause(100);await click('缩小');await pause(100);await evaluate('new Promise(resolve=>requestAnimationFrame(()=>requestAnimationFrame(resolve)))');
  await writeFile(join(tmpdir(),'headless-opaque-renderer.png'),Buffer.from((await call('Page.captureScreenshot',{format:'png'})).data,'base64'));
  console.log('PASS unknown types and future versions render safe read-only placeholders with custom/partition connections, preserve opaque payloads through edits and recovery, and never load opaque asset fields');

  const extensionRoot=id(810),meter={...node('meter-one',extensionRoot,350),componentId:'fixture:meter',data:{metric:3,raw:{retained:true}}},meterTwo={...meter,id:'meter-two',geometry:{...meter.geometry,x:750},data:{metric:9}},meterEdge={id:'meter-edge',incarnation:1,structure:'connection',componentId:'fixture:metric-edge',dataVersion:1,ownerCanvasId:extensionRoot,source:{elementId:meter.id,portId:'custom-out'},target:{elementId:meterTwo.id,portId:'custom-in'},data:{metric:55},path:{type:'metric-curve',retained:true}};
  documents.set(extensionRoot,createDocument(extensionRoot,[{id:extensionRoot,parent:null}],[meter,meterTwo,meterEdge,{...meterEdge,id:'meter-builtin-edge',componentId:'connection',data:{},path:null}]));versions.set(extensionRoot,1);boards.push({id:extensionRoot,workspace_id:workspace,kind:'board',version:1,title:'Extension board'});await call('Page.navigate',{url:`http://127.0.0.1:${port}/dashboard/${workspace}/${extensionRoot}`});await until(`document.querySelectorAll('[data-renderer-fixture="meter"]').length===2&&document.querySelectorAll('[data-renderer-fixture="metric-edge"]').length===1`,'host-installed custom node/edge renderers did not mount');await until(`document.querySelectorAll('.react-flow__edge').length===2`,'built-in edge did not connect custom renderer ports');assert.equal(await evaluate(`document.querySelectorAll('[aria-label="暂不支持编辑的元素"]').length`),0);await click('Increase meter-one');for(let i=0;i<100&&documents.get(extensionRoot).elements.get('meter-one').data.metric!==4;i++)await pause(20);assert.deepEqual(documents.get(extensionRoot).elements.get('meter-one').data,{metric:4,raw:{retained:true,edited:true}});assert.deepEqual(documents.get(extensionRoot).elements.get('meter-edge'),meterEdge);
  await click('撤销');for(let i=0;i<100&&documents.get(extensionRoot).elements.get('meter-one').data.metric!==3;i++)await pause(20);assert.equal(documents.get(extensionRoot).elements.get('meter-one').data.metric,3);assert.deepEqual(documents.get(extensionRoot).elements.get('meter-one').data.raw,{retained:true});await click('重做');for(let i=0;i<100&&documents.get(extensionRoot).elements.get('meter-one').data.metric!==4;i++)await pause(20);assert.equal(documents.get(extensionRoot).elements.get('meter-one').data.metric,4);await call('Page.reload');await until(`document.querySelector('[data-id="meter-one"] [data-renderer-fixture="meter"]')?.textContent.includes('Metric 4')&&!!document.querySelector('[data-renderer-fixture="metric-edge"]')`,'registered renderer edits did not recover');
  console.log('PASS Host-installed custom model/node/edge definitions render without core type switches; command-backed edits preserve raw fields and recover through undo/redo/reload');

  brokenStreamRoot=id(830);const brokenRoot=brokenStreamRoot;
  documents.set(brokenRoot,createDocument(brokenRoot,[{id:brokenRoot,parent:null}],[{...node('prefix-visible',brokenRoot,80),data:{title:'Preserved prefix',text:'prefix-kept'}},node('tail-node',brokenRoot,450)]));versions.set(brokenRoot,1);boards.push({id:brokenRoot,workspace_id:workspace,kind:'board',version:1,title:'Interrupted board'});
  await call('Page.navigate',{url:`http://127.0.0.1:${port}/dashboard/${workspace}/${brokenRoot}`});
  await until(`document.querySelector('[data-headless-canvas][data-model-loading] textarea')?.value==='prefix-kept'&&!!document.querySelector('[role="alert"]')`,'malformed model tail hid the legal prefix or failed to report');assert.equal(await evaluate(`!!document.querySelector('[data-headless-canvas][data-model-loading]')`),true);assert.equal(calls.filter(call=>call.method==='POST'&&call.path.includes('/'+brokenRoot+'/canvas/model/operations')).length,0);
  assert.ok((await evaluate(`document.querySelector('[role="alert"]').textContent`)).includes('画布返回的数据无法解析'));
  brokenStreamRoot=null;await evaluate(`[...document.querySelectorAll('button')].find(button=>button.textContent.trim()==='重新加载').click()`);
  await until(`!!document.querySelector('[data-headless-canvas]:not([data-model-loading])')&&document.querySelectorAll('.react-flow__node').length===2&&!document.querySelector('[role="alert"]')`,'retry did not replace the failed prefix with a complete editor');
  console.log('PASS malformed model tail retains its legal partial editor, reports a readable error and retries into the complete editor without model writes');

  scopeStreamRoot=id(850);const scopedRoot=scopeStreamRoot,scopedChild=id(851),scopeFrame={...node('scope-frame',scopedRoot,450),componentId:'frame',geometry:{x:450,y:150,width:600,height:450,rotation:0}};
  documents.set(scopedRoot,createDocument(scopedRoot,[{id:scopedRoot,parent:null},{id:scopedChild,parent:{canvasId:scopedRoot,entryElementId:scopeFrame.id}}],[node('scope-node',scopedRoot,80),scopeFrame,node('scope-child',scopedChild,20),node('scope-tail',scopedChild,320)]));versions.set(scopedRoot,1);versions.set(scopedChild,1);boards.push({id:scopedRoot,workspace_id:workspace,kind:'board',version:1,title:'Scope ACK board'});
  await call('Page.navigate',{url:`http://127.0.0.1:${port}/dashboard/${workspace}/${scopedRoot}`});await until(`!!document.querySelector('[data-headless-canvas][data-model-loading] .react-flow__node[data-id="scope-node"]')`,'scope fixture did not show its certified owner');
  const scopePoint=await evaluate(`(()=>{const r=document.querySelector('.react-flow__node[data-id="scope-node"] [aria-label^="单击选中"]').getBoundingClientRect();return{x:r.x+50,y:r.y+25};})()`);
  await call('Input.dispatchMouseEvent',{type:'mousePressed',...scopePoint,button:'left',buttons:1,clickCount:2});await call('Input.dispatchMouseEvent',{type:'mouseReleased',...scopePoint,button:'left',buttons:0,clickCount:2});await until(`document.activeElement===document.querySelector('.react-flow__node[data-id="scope-node"] textarea')&&!document.activeElement.readOnly`,'certified scope text did not enter editing');await call('Input.insertText',{text:' ACK before tail'});const scopeText=await evaluate('document.activeElement.value');
  for(let i=0;i<150&&documents.get(scopedRoot).elements.get('scope-node').data.text!==scopeText;i++)await pause(20);assert.equal(documents.get(scopedRoot).elements.get('scope-node').data.text,scopeText,'certified scope edit waited for another owner tail');assert.equal(versions.get(scopedRoot),2);assert.equal(versions.get(scopedChild),1);assert.equal(await evaluate(`!!document.querySelector('[data-headless-canvas][data-model-loading]')`),true);assert.equal(await evaluate(`!!document.querySelector('.react-flow__node[data-id="scope-tail"]')`),false);
  assert.equal(await evaluate(`document.querySelector('button[aria-label="添加文本卡片"]').disabled`),false);await click('添加文本卡片');
  for(let i=0;i<150&&documents.get(scopedRoot).elements.size!==5;i++)await pause(20);const born=[...documents.get(scopedRoot).elements.values()].find(element=>!['scope-node','scope-frame','scope-child','scope-tail'].includes(element.id));assert.ok(born,'certified scope did not create a new card before the tail');await click('撤销');for(let i=0;i<150&&documents.get(scopedRoot).elements.has(born.id);i++)await pause(20);assert.equal(documents.get(scopedRoot).elements.has(born.id),false);await click('重做');for(let i=0;i<150&&documents.get(scopedRoot).elements.get(born.id)?.incarnation!==2;i++)await pause(20);assert.equal(documents.get(scopedRoot).elements.get(born.id)?.incarnation,2);assert.equal(versions.get(scopedRoot),5);
  assert.equal(await evaluate(`document.querySelector('button[aria-label="导入画布记录"]').disabled`),false);
  await evaluate(`(()=>{const input=document.querySelector('input[data-canvas-import]'),transfer=new DataTransfer();transfer.items.add(new File([JSON.stringify({kind:'element',key:'partial-import',record:{id:'partial-import',incarnation:1,ownerCanvasId:'$target',componentId:'text',dataVersion:1,structure:'node',data:{title:'Imported before tail',text:'streaming'},geometry:{x:0,y:0,width:100,height:80,rotation:0}}})+'\\n'],'partial.ndjson',{type:'application/x-ndjson'}));input.files=transfer.files;input.dispatchEvent(new Event('change',{bubbles:true}));return true;})()`);
  for(let i=0;i<200&&![...documents.get(scopedRoot).elements.values()].some(element=>element.data.title==='Imported before tail');i++)await pause(20);assert.ok([...documents.get(scopedRoot).elements.values()].some(element=>element.data.title==='Imported before tail'),'partial page import did not reach server before tail');
  await call('Input.dispatchMouseEvent',{type:'mousePressed',...scopePoint,button:'left',buttons:1,clickCount:1});await call('Input.dispatchMouseEvent',{type:'mouseReleased',...scopePoint,button:'left',buttons:0,clickCount:1});await until(`!document.querySelector('button[aria-label="深复制选中内容"]').disabled`,'closed source copy stayed disabled during loading');const copyCount=documents.get(scopedRoot).elements.size;await click('深复制选中内容');
  for(let i=0;i<200&&documents.get(scopedRoot).elements.size===copyCount;i++)await pause(20);assert.equal(documents.get(scopedRoot).elements.size,copyCount+1,'page copy did not publish before tail');await until(`!!document.querySelector('button[aria-label="深复制选中内容"]')`,'copy did not finish');assert.equal(await evaluate(`document.querySelector('button[aria-label="添加图片"]').disabled`),false);const beforeImage=documents.get(scopedRoot).elements.size,uploadsBefore=uploads.length;
  await evaluate(`(async()=>{const canvas=new OffscreenCanvas(4,2);canvas.getContext('2d').fillRect(0,0,4,2);const bytes=await canvas.convertToBlob({type:'image/png'}),transfer=new DataTransfer();transfer.items.add(new File([bytes],'loading-pixel.png',{type:'image/png'}));const input=document.querySelector('[data-headless-canvas] input[type=file]');input.files=transfer.files;input.dispatchEvent(new Event('change',{bubbles:true}));})()`);
  for(let i=0;i<200&&documents.get(scopedRoot).elements.size===beforeImage;i++)await pause(20);const loadingImage=[...documents.get(scopedRoot).elements.values()].find(element=>element.componentId==='image');assert.ok(loadingImage,'scoped image waited for the unrelated tail');assert.equal(uploads.length,uploadsBefore+1);assert.equal(loadingImage.geometry.height,130,'scoped image lost default sizing');assert.equal(await evaluate(`!!document.querySelector('[data-headless-canvas][data-model-loading]')`),true);const scopeVersion=versions.get(scopedRoot);

  await call('Input.dispatchMouseEvent',{type:'mousePressed',...scopePoint,button:'left',buttons:1,clickCount:2});await call('Input.dispatchMouseEvent',{type:'mouseReleased',...scopePoint,button:'left',buttons:0,clickCount:2});await until(`document.activeElement===document.querySelector('.react-flow__node[data-id="scope-node"] textarea')&&!document.activeElement.readOnly`,'original text focus did not return after structural history');
  await evaluate('window.__scopeTextarea=document.activeElement;true');releaseScopeStream();await until(`!!document.querySelector('[data-headless-canvas]:not([data-model-loading])')&&!!document.querySelector('.react-flow__node[data-id="scope-tail"]')`,'original stream did not complete after a scoped ACK');assert.equal(await evaluate('window.__scopeTextarea.isConnected&&document.activeElement===window.__scopeTextarea'),true);assert.equal(await evaluate('window.__scopeTextarea.value'),scopeText);assert.equal(versions.get(scopedRoot),scopeVersion,'old tail caused a duplicate write');assert.equal(documents.get(scopedRoot).elements.get(born.id)?.incarnation,2);console.log('PASS certified owner image/import/copy, edits and create/undo/redo ACK before another canvas tail, then original-source completion preserves content, focus, history and advanced versions');

  abandonedRoot=id(840);const backgroundRoot=abandonedRoot;
  documents.set(backgroundRoot,createDocument(backgroundRoot,[{id:backgroundRoot,parent:null}],[node('background-node',backgroundRoot,80),node('background-tail',backgroundRoot,450)]));versions.set(backgroundRoot,1);boards.push({id:backgroundRoot,workspace_id:workspace,kind:'board',version:1,title:'Background loading board'});
  await call('Page.navigate',{url:`http://127.0.0.1:${port}/dashboard/${workspace}/${backgroundRoot}`});await until(`!!document.querySelector('[data-headless-canvas][data-model-loading] .react-flow__node[data-id="background-node"]')`,'background fixture did not open the prefix');
  const backgroundPoint=await evaluate(`(()=>{const r=document.querySelector('.react-flow__node[data-id="background-node"] [aria-label^="单击选中"]').getBoundingClientRect();return{x:r.x+60,y:r.y+30};})()`);
  await call('Input.dispatchMouseEvent',{type:'mousePressed',...backgroundPoint,button:'left',buttons:1,clickCount:2});await call('Input.dispatchMouseEvent',{type:'mouseReleased',...backgroundPoint,button:'left',buttons:0,clickCount:2});await until(`document.activeElement===document.querySelector('.react-flow__node[data-id="background-node"] textarea')&&!document.activeElement.readOnly`,'background prefix did not enter editing');await call('Input.insertText',{text:' background-local'});const backgroundText=await evaluate('document.activeElement.value');
  assert.equal(calls.filter(call=>call.method==='POST'&&call.path.includes('/'+backgroundRoot+'/canvas/model/operations')).length,0);
  await evaluate(`(()=>{const link=[...document.querySelectorAll('a')].find(link=>link.pathname.endsWith('/${other}'));if(!link)throw Error('other board navigation link missing');link.click();})()`);await until(`location.pathname.endsWith('${other}')&&!!document.querySelector('[data-headless-canvas]')`,'navigation away from partial loading failed');
  for(let i=0;i<150&&documents.get(backgroundRoot).elements.get('background-node').data.text!==backgroundText;i++)await pause(20);assert.equal(documents.get(backgroundRoot).elements.get('background-node').data.text,backgroundText,'leaving the view stranded a local edit behind the loading hold');assert.ok(calls.some(call=>call.method==='GET'&&call.path.endsWith('/'+backgroundRoot+'/canvas/model')&&call.headers.accept!=='application/vnd.foundry.canvas-model+ndjson;version=1'));
  releaseAbandoned();await pause(100);assert.ok((await evaluate('location.pathname')).endsWith(other));console.log('PASS leaving a partial editor hands completion to the project owner, persists and synchronizes its edit through a fresh read without reopening the view');

  await evaluate(`(()=>{const transfer=new DataTransfer(),record={kind:'element',key:'json-ui',record:{id:'json-ui',incarnation:1,ownerCanvasId:'$target',componentId:'text',dataVersion:1,structure:'node',data:{title:'JSON array UI',text:'JSON array UI text'},geometry:{x:80,y:100,width:240,height:160,rotation:0}}};transfer.items.add(new File([JSON.stringify([record])],'records.json',{type:'application/json'}));const input=document.querySelector('input[data-canvas-import]');input.files=transfer.files;input.dispatchEvent(new Event('change',{bubbles:true}));})()`);
  await until(`document.querySelector('[aria-label="画布导入"]').textContent.includes('已加入画布')&&[...document.querySelectorAll('[data-headless-canvas] textarea')].some(input=>input.value==='JSON array UI text')`,'JSON array did not render through the file picker');
  for(let i=0;i<200&&![...documents.get(other).elements.values()].some(e=>e.data.title==='JSON array UI');i++)await pause(20);assert.ok([...documents.get(other).elements.values()].some(e=>e.data.title==='JSON array UI'));
  await call('Page.reload');await until(`[...document.querySelectorAll('[data-headless-canvas] textarea')].some(input=>input.value==='JSON array UI text')&&document.querySelector('[aria-label="画布导入"]').textContent.includes('records.json')`,'JSON array task/content did not recover after reload');
  console.log('PASS JSON array file picker imports and synchronizes native records then recovers its original task and content after reload');

  await click('账户和工作空间');await until(`!!document.querySelector('#workspace-account:popover-open')`,'account menu did not open');await evaluate(`[...document.querySelectorAll('button')].find(button=>button.textContent.trim()==='退出登录').click()`);
  await until(`location.pathname==='/login'&&!document.body.innerText.includes('This page couldn’t load')`,'logout did not safely detach the view');
  assert.ok(calls.some(call=>call.path.endsWith('/canvas/model')&&call.headers.accept==='application/vnd.foundry.canvas-model+ndjson;version=1'));
  console.log('PASS actual GraphPage negotiates and assembles canonical NDJSON through the real Next proxy');
  console.log('PASS logout retires the runtime before dropping its view without a render error');
  }
} finally {
  releaseScopeStream();releaseAbandoned();releaseFirstModel();releaseImport();releaseApply();releaseUpload(); socket?.close();
  if (chrome) { const exit = new Promise(resolve => { if (chrome.exitCode !== null) resolve(); else chrome.once('exit', resolve); }); chrome.kill(); await exit; }
  if (next?.pid) { const exit = new Promise(resolve => { if (next.exitCode !== null) resolve(); else next.once('exit', resolve); }); try { process.kill(-next.pid, 'SIGTERM'); } catch {} await Promise.race([exit, pause(3000)]); if (next.exitCode === null) try { process.kill(-next.pid, 'SIGKILL'); } catch {} }
  upstream.closeAllConnections(); await new Promise(resolve => upstream.close(resolve));
  await rm(directory, { recursive: true, force: true, maxRetries: 5 }); await rm(profile, { recursive: true, force: true, maxRetries: 5 });
}