Explain binary and oversized files in the editor preview

app/src/editor-ui.mjs

@@ -53,7 +53,8 @@ export function createEditorUI(element) {
   input.addEventListener('scroll', syncScroll, { passive: true });
   const resize = new ResizeObserver(syncScroll); resize.observe(input);
   return {
-    setFile(nextPath, text) {
+    setFile(nextPath, text, placeholder = nextPath ? 'Empty file.' : 'Select a file to inspect or edit it.') {
+      input.placeholder = placeholder;
       if (path === nextPath && input.value === text) return;
       const changed = path !== nextPath;
       path = nextPath;

app/src/local-folder.mjs

@@ -15,8 +15,9 @@ export function encodeBytes(bytes) {
 export const decodeBytes = text => text == null ? null : Uint8Array.from(atob(text), c => c.charCodeAt(0));
 export function displayText(bytes) {
   if (bytes == null) return '';
-  const text = new TextDecoder('utf-8', { fatal: true }).decode(bytes);
-  if (text.includes('\0')) throw Error('This is a binary file. The editor supports UTF-8 text.');
+  let text;
+  try { text = new TextDecoder('utf-8', { fatal: true }).decode(bytes); } catch { /* Not UTF-8 text. */ }
+  if (text === undefined || text.includes('\0')) throw Object.assign(Error('This is a binary or non-UTF-8 file. The editor supports UTF-8 text.'), { code: 'BINARY_FILE' });
   return text;
 }
 const unsupported = () => { throw Error('ENOTSUP: Local folders do not support Unix permissions, timestamps, or links.'); };
@@ -80,7 +81,7 @@ export class LocalFolderFs {
     if (!handle) return null;
     if (handle.kind !== 'file') throw Error('A folder now occupies ' + path + '. No file was overwritten.');
     const file = await handle.getFile();
-    if (file.size > LOCAL_FILE_LIMIT) throw Error(path + ' is larger than the 1 MiB per-file limit.');
+    if (file.size > LOCAL_FILE_LIMIT) throw Object.assign(Error(path + ' is larger than the 1 MiB per-file limit.'), { code: 'FILE_TOO_LARGE' });
     return new Uint8Array(await file.arrayBuffer());
   }
   async diskEntry(path) {

app/src/main.mjs

@@ -98,12 +98,18 @@ function renderFiles() {
 }
 async function loadPreview(file) {
   const version = ++previewVersion;
-  previewReady = false; editorUI.setFile(file, ''); controls();
+  previewReady = false; editorUI.setFile(file, '', 'Loading file…'); controls();
   try {
     const content = await rpc('preview', { path: file });
     if (version !== previewVersion || file !== selected || dirty) return;
     editorUI.setFile(file, content); previewReady = true;
-  } catch (error) { if (version === previewVersion) notice(error.message); }
+  } catch (error) {
+    if (version !== previewVersion || file !== selected) return;
+    const message = error.code === 'BINARY_FILE' ? 'No text preview available.\nThis file is binary or isn’t UTF-8 text.'
+      : error.code === 'FILE_TOO_LARGE' ? 'File too large to preview (1 MiB limit).'
+      : 'Unable to preview this file.\n' + error.message;
+    editorUI.setFile(file, '', message);
+  }
   finally { if (version === previewVersion) controls(); }
 }
 function selectFile(file) {

app/tests/local-folder.test.mjs

@@ -55,7 +55,7 @@ test('Local folder: indexing/listing/stat do not read file bytes; workspace snap
   const listing = await workspace.bash.exec('ls -l /workspace'); assert.equal(listing.exitCode, 0, listing.stderr);
   assert.equal(disk.reads, 0); assert.equal(local.skipped, 1);
   assert.equal(await workspace.read('a.txt'), 'hello'); assert.equal(disk.reads, 1);
-  await assert.rejects(workspace.read('large.bin'), /1 MiB/);
+  await assert.rejects(workspace.read('large.bin'), { code: 'FILE_TOO_LARGE' });
 });
 test('Local folder: real Bash and agent tools stage edits, mkdir, copy, rename, delete; Apply writes only staged paths', async t => {
   const disk = await fixture(t);
@@ -118,7 +118,9 @@ test('Local folder: unsupported operations, excludes, binary editor and traversa
   for (const method of ['chmod', 'symlink', 'link', 'utimes']) assert.throws(() => local[method]('/README.md', 0o777), /ENOTSUP/);
   await assert.rejects(local.rm('/src', { recursive: true }), /not supported/);
   await assert.rejects(local.writeFile('/.git/config', 'oops'), /excluded/);
-  assert.throws(() => displayText(new Uint8Array([0, 1])), /binary/);
+  assert.throws(() => displayText(new Uint8Array([0, 1])), { code: 'BINARY_FILE' });
+  assert.throws(() => displayText(new Uint8Array([0xff, 0xfe])), { code: 'BINARY_FILE' });
+  assert.equal(displayText(new TextEncoder().encode('Café 🐾')), 'Café 🐾');
   await workspace.write('../outside.txt', 'virtual only');
   assert.deepEqual(await local.patches(), []);
   await assert.rejects(disk.read('outside.txt'), { code: 'ENOENT' });

assets/{agent.worker-BLr4cL8b.js → agent.worker-yyKS-x2c.js}

@@ -1766,7 +1766,7 @@ Folder,8
 `},cFe=e=>e.length>6e3?e.slice(0,6e3)+`
 [Output truncated at 6,000 characters; use head, grep, or a narrower query.]`:e,k9=(e,t={})=>({content:[{type:`text`,text:cFe(e)}],details:t});function A9(e=O9,t,n){t&&(e=Object.fromEntries(t.filter(([,e])=>e.type===`file`).map(([e,t])=>[e,{mode:t.mode,content:Uint8Array.from(atob(t.base64),e=>e.charCodeAt(0))}])));let r=new tFe({...n?{fs:n.mount()}:{files:e},cwd:`/workspace`,executionLimitProfile:`hardened`,fetch:oFe(),executionLimits:{maxExecutionTimeMs:1e4,maxCommandCount:3e3,maxFileSystemBytes:16*1024**2,maxOutputSize:262144,maxSourceBytes:131072}}),i=e=>r.fs.resolvePath(`/workspace`,e),a=(async()=>{for(let[e,n]of t??[])n.type===`directory`?(await r.fs.mkdir(e,{recursive:!0}),await r.fs.chmod(e,n.mode)):n.type===`symlink`&&await r.fs.symlink(n.target,e)})();async function o(e,t){let n=i(e);if(new TextEncoder().encode(t).length>1024**2)throw Error(`The editor accepts files up to 1 MiB.`);await r.fs.mkdir(n.slice(0,n.lastIndexOf(`/`))||`/`,{recursive:!0}),await r.fs.writeFile(n,t)}let s=[{name:`bash`,label:`Bash`,description:`Run a bash command in /workspace. Supports cat, ls, grep, sed, awk, jq, sort, pipes, redirects, shell scripts, and curl. HTTP GET/HEAD/POST is enabled for any HTTPS URL; there is no host allowlist. Use curl -fsS URL; use set -o pipefail before piping HTTP output to jq. Browser CORS applies; redirects require the final URL. HTTP limits: 8 seconds, 1 MiB. No Node.js, Python, npm, or native binaries. Files persist across commands; cd and variables reset each call.`,parameters:Sn({command:Yr({description:`The shell command to execute.`})}),execute:async(e,{command:t},n)=>{let i=await r.exec(t,{signal:n});return k9(`${i.stdout}${i.stderr?`
 STDERR:
-`+i.stderr:``}\nExit code: ${i.exitCode}`,{exitCode:i.exitCode})}},{name:`read`,label:`Read file`,description:`Read a UTF-8 text file. Use bash head/grep for large files.`,parameters:Sn({path:Yr()}),execute:async(e,t)=>{let n=await r.fs.realpath(i(t.path));return k9(await r.fs.readFile(n),{path:n})}},{name:`write`,label:`Write file`,description:`Create or replace a UTF-8 text file. Parent directories are created.`,parameters:Sn({path:Yr(),content:Yr()}),execute:async(e,t)=>(await o(t.path,t.content),k9(`Wrote `+i(t.path)))},{name:`edit`,label:`Edit file`,description:`Replace one exact occurrence of oldText with newText in a UTF-8 file. oldText must match exactly once.`,parameters:Sn({path:Yr(),oldText:Yr(),newText:Yr()}),execute:async(e,t)=>{let n=await r.fs.readFile(i(t.path));if(!t.oldText||n.split(t.oldText).length!==2)throw Error(`oldText must match exactly once. Read the file first.`);return await o(t.path,n.replace(t.oldText,()=>t.newText)),k9(`Edited `+i(t.path))}}];async function c(){if(n)return n.listing();let e={};for(let t of r.fs.getAllPaths().sort())t.startsWith(`/bin/`)||t.startsWith(`/usr/bin/`)||t.startsWith(`/dev/`)||t.startsWith(`/proc/`)||(await r.fs.lstat(t)).isFile&&(e[t]=await r.fs.readFile(t));return e}async function l(){if(n)return null;let e=[];for(let t of r.fs.getAllPaths().sort()){if([`/bin`,`/usr/bin`,`/dev`,`/proc`].some(e=>t===e||t.startsWith(e+`/`)))continue;let n=await r.fs.lstat(t);if(n.isSymbolicLink)e.push([t,{type:`symlink`,target:await r.fs.readlink(t)}]);else if(n.isDirectory)e.push([t,{type:`directory`,mode:n.mode}]);else if(n.isFile){let i=await r.fs.readFileBuffer(t),a=``;for(let e=0;e<i.length;e+=32768)a+=String.fromCharCode(...i.subarray(e,e+32768));e.push([t,{type:`file`,base64:btoa(a),mode:n.mode}])}}return e}return{bash:r,tools:s,ready:a,write:o,snapshot:c,serialize:l,localFolder:n,read:e=>r.fs.readFile(i(e))}}async function lFe(){let e=await new Promise((e,t)=>{let n=indexedDB.open(`minicpm5-pi-workspace`,1);n.onupgradeneeded=()=>n.result.createObjectStore(`state`),n.onsuccess=()=>e(n.result),n.onerror=()=>t(n.error)});return{async load(t=`current`){return new Promise((n,r)=>{let i=e.transaction(`state`).objectStore(`state`).get(t);i.onsuccess=()=>n(i.result),i.onerror=()=>r(i.error)})},async save(t,n=`current`){return new Promise((r,i)=>{let a=e.transaction(`state`,`readwrite`);a.objectStore(`state`).put(t,n),a.oncomplete=r,a.onerror=()=>i(a.error),a.onabort=()=>i(a.error)})}}}const j9=1024**2,M9=16*j9,N9=new Set([`.git`,`node_modules`,`.venv`,`__pycache__`]),P9=(e,t)=>e?.length===t?.length&&(e==null||e.every((e,n)=>e===t[n]));function F9(e){if(e==null)return null;let t=``;for(let n=0;n<e.length;n+=32768)t+=String.fromCharCode(...e.subarray(n,n+32768));return btoa(t)}const I9=e=>e==null?null:Uint8Array.from(atob(e),e=>e.charCodeAt(0));function uFe(e){if(e==null)return``;let t=new TextDecoder(`utf-8`,{fatal:!0}).decode(e);if(t.includes(`\0`))throw Error(`This is a binary file. The editor supports UTF-8 text.`);return t}const L9=()=>{throw Error(`ENOTSUP: Local folders do not support Unix permissions, timestamps, or links.`)};var R9=class e{constructor(e){this.handle=e,this.memory=new N2({},{maxTotalBytes:M9}),this.original=new Map([[`/`,{kind:`directory`,handle:e}]]),this.baselines=new Map,this.dirty=new Set,this.operations=new Map,this.skipped=0,this.baselineBytes=0}static async open(t,{signal:n,patches:r=[]}={}){if(t?.kind!==`directory`)throw Error(`Select a folder.`);let i=new e(t),a=0;async function o(e,t,r){if(r>40)throw Error(`This folder is too deeply nested. Choose a smaller project folder.`);for await(let[s,c]of e.entries()){if(n?.throwIfAborted(),N9.has(s)){i.skipped++;continue}if(++a>5e3)throw Error(`This folder contains more than 5,000 entries. Choose a smaller project folder.`);let e=t+`/`+s;i.original.set(e,{kind:c.kind,handle:c}),c.kind===`directory`?(await i.memory.mkdir(e,{recursive:!0}),await o(c,e,r+1)):i.memory.writeFileLazy(e,()=>i.loadOriginal(e))}}await o(t,``,0);for(let e of r){let t=i.path(e.path);if(t===`/`)throw Error(`Invalid saved local-folder change.`);let n=I9(e.before);if(i.baselineBytes+=n?.length??0,i.baselineBytes>M9)throw Error(`Saved changes exceed the 16 MiB local-folder limit.`);i.baselines.set(t,n),i.dirty.add(t),e.kind===`directory`?await i.memory.mkdir(t,{recursive:!0}):e.after===null?await i.memory.rm(t,{force:!0}):(await i.memory.mkdir(i.parent(t),{recursive:!0}),await i.memory.writeFile(t,I9(e.after)))}return i}path(e){if(typeof e!=`string`||e.includes(`\0`))throw Error(`Invalid file path.`);let t=this.memory.resolvePath(`/`,e);if(t.split(`/`).some(e=>N9.has(e)))throw Error(`This folder is excluded: .git, node_modules, .venv, and __pycache__.`);return t}parent(e){return e.slice(0,e.lastIndexOf(`/`))||`/`}async diskBytes(e){let t=await this.diskEntry(e);if(!t)return null;if(t.kind!==`file`)throw Error(`A folder now occupies `+e+`. No file was overwritten.`);let n=await t.getFile();if(n.size>j9)throw Error(e+` is larger than the 1 MiB per-file limit.`);return new Uint8Array(await n.arrayBuffer())}async diskEntry(e){let t=this.handle,n=this.path(e).split(`/`).filter(Boolean);if(!n.length)return t;try{for(let e of n.slice(0,-1))t=await t.getDirectoryHandle(e);try{return await t.getFileHandle(n.at(-1))}catch(e){if(e.name!==`TypeMismatchError`)throw e;return await t.getDirectoryHandle(n.at(-1))}}catch(e){if(e.name===`NotFoundError`)return null;throw e}}async loadOriginal(e){let t=await this.diskBytes(e);if(!t)throw Error(`ENOENT: File was removed from disk: `+e+`. Refresh the folder.`);if(!this.baselines.has(e)){if(this.baselineBytes+t.length>M9)throw Error(`Local file reads reached the 16 MiB session limit. Apply or discard changes, then Refresh.`);this.baselines.set(e,t),this.baselineBytes+=t.length}return t}async baseline(e){this.baselines.has(e)||this.baselines.set(e,this.original.get(e)?.kind===`file`?await this.loadOriginal(e):null)}async atPath(e,t){let n=(this.operations.get(e)??Promise.resolve()).catch(()=>{}).then(t);this.operations.set(e,n);try{return await n}finally{this.operations.get(e)===n&&this.operations.delete(e)}}async readFile(e,t){let n=this.path(e);return this.atPath(n,()=>this.memory.readFile(n,t))}async readFileBuffer(e){let t=this.path(e);return this.atPath(t,()=>this.memory.readFileBuffer(t))}async readFileBytes(e){let t=this.path(e);return this.atPath(t,()=>this.memory.readFileBytes(t))}async exists(e){return this.memory.exists(this.path(e))}async stat(e){let t=this.path(e),n=this.original.get(t);if(n?.kind===`file`&&!this.dirty.has(t)){let e=await n.handle.getFile();return{isFile:!0,isDirectory:!1,isSymbolicLink:!1,mode:420,size:this.baselines.get(t)?.length??e.size,mtime:new Date(e.lastModified)}}return this.memory.stat(t)}async lstat(e){return this.stat(e)}async realpath(e){return this.memory.realpath(this.path(e))}resolvePath(e,t){return this.memory.resolvePath(e,t)}getAllPaths(){return this.memory.getAllPaths()}async readdir(e){return this.memory.readdir(this.path(e))}async readdirWithFileTypes(e){return this.memory.readdirWithFileTypes(this.path(e))}async mkdir(e,t){let n=this.path(e),r=new Set(this.getAllPaths());await this.memory.mkdir(n,t);for(let e of this.getAllPaths())r.has(e)||(this.dirty.add(e),this.baselines.set(e,null))}async writeFile(e,t,n){let r=this.path(e);return this.atPath(r,()=>this.writeAtPath(r,t,n))}async writeAtPath(e,t,n){if(e===`/`)throw Error(`EISDIR: Cannot replace the selected folder.`);let r=new N2({},{maxTotalBytes:j9});await r.writeFile(`/data`,t,n);let i=await r.readFileBuffer(`/data`);if(i.length>j9)throw Error(`Local files are limited to 1 MiB.`);if(!await this.memory.exists(this.parent(e)))throw Error(`ENOENT: Parent folder does not exist: `+this.parent(e));await this.baseline(e),await this.memory.writeFile(e,i),this.dirty.add(e)}async appendFile(e,t,n){let r=new N2({"/data":await this.exists(e)?await this.readFileBuffer(e):new Uint8Array},{maxTotalBytes:j9});await r.appendFile(`/data`,t,n),await this.writeFile(e,await r.readFileBuffer(`/data`))}async rm(e,t){let n=this.path(e);return this.atPath(n,()=>this.removeAtPath(n,t))}async removeAtPath(e,t){if(e===`/`)throw Error(`Cannot remove the selected local folder.`);if(!await this.exists(e))return this.memory.rm(e,t);if((await this.stat(e)).isDirectory){if(this.original.has(e))throw Error(`Removing or renaming existing local folders is not supported. Remove individual files instead.`);for(let t of this.getAllPaths().filter(t=>t.startsWith(e+`/`)))if(this.original.has(t))throw Error(`This folder contains existing local files.`);let n=this.getAllPaths().filter(t=>t===e||t.startsWith(e+`/`));await this.memory.rm(e,t);for(let e of n)this.dirty.delete(e),this.baselines.delete(e)}else await this.baseline(e),await this.memory.rm(e,t),this.dirty.add(e)}async cp(e,t,n){let r=this.path(e),i=this.path(t);if(await this.exists(i)&&(await this.stat(i)).isDirectory&&(i+=`/`+r.split(`/`).at(-1)),r===i||i.startsWith(r+`/`))throw Error(`Cannot copy a path into itself.`);if((await this.stat(r)).isDirectory){if(!n?.recursive)throw Error(`EISDIR: Use cp -r to copy a directory.`);await this.mkdir(i,{recursive:!0});for(let e of await this.readdir(r))await this.cp(r+`/`+e,i+`/`+e,n)}else await this.writeFile(i,await this.readFileBuffer(r))}async mv(e,t){if((await this.stat(e)).isDirectory)throw Error(`Renaming local folders is not supported.`);await this.cp(e,t),await this.rm(e)}chmod=L9;symlink=L9;link=L9;readlink=L9;utimes=L9;async patches(){let e=[];for(let t of[...this.dirty].sort()){let n=this.baselines.get(t)??null,r=await this.exists(t),i=r&&(await this.memory.stat(t)).isDirectory?`directory`:`file`,a=r&&i===`file`?await this.readFileBuffer(t):null;i===`file`&&P9(n,a)||e.push({path:t,kind:i,before:F9(n),after:F9(a)})}return e}async listing(){let e=Object.create(null);for(let t of this.getAllPaths()){let n=this.original.get(t);(n?.kind===`file`||!n&&(await this.memory.stat(t)).isFile)&&(e[`/workspace`+t]=null)}return e}async status(){return{name:this.handle.name,count:(await this.patches()).length,skipped:this.skipped}}async apply(e){let t=await this.patches(),n=async e=>{let t=await this.diskEntry(e.path);if(e.kind===`directory`){if(t)throw Error(`Conflict: `+e.path+` was created on disk.`)}else if(!P9(await this.diskBytes(e.path),I9(e.before)))throw Error(`Conflict: `+e.path+` changed on disk. Nothing will overwrite it. Discard staged edits and refresh to read the new version.`)};for(let r of t)e?.throwIfAborted(),await n(r);let r=0;try{for(let i of t){e?.throwIfAborted(),await n(i);let t=i.path.split(`/`).filter(Boolean),a=this.handle;for(let e of t.slice(0,-1))a=await a.getDirectoryHandle(e);let o=t.at(-1);if(i.kind===`directory`){let e=await a.getDirectoryHandle(o,{create:!0});this.original.set(i.path,{kind:`directory`,handle:e})}else if(i.after===null)await a.removeEntry(o),this.original.delete(i.path),this.baselineBytes-=this.baselines.get(i.path)?.length??0,this.baselines.delete(i.path);else{let t=await a.getFileHandle(o,{create:!0}),n;try{n=await t.createWritable(),await n.write(I9(i.after)),e?.throwIfAborted(),await n.close()}catch(e){if(await n?.abort().catch(()=>{}),i.before===null)try{(await t.getFile()).size===0&&await t.isSameEntry(await a.getFileHandle(o))&&await a.removeEntry(o)}catch{}throw e}this.original.set(i.path,{kind:`file`,handle:t}),this.baselineBytes+=I9(i.after).length-(this.baselines.get(i.path)?.length??0),this.baselines.set(i.path,I9(i.after))}this.dirty.delete(i.path),r++}}catch(e){throw Error(`${r} of ${t.length} changes applied. Remaining changes are still staged. ${e.message}`)}return r}mount(){return new J6({mounts:[{mountPoint:`/workspace`,filesystem:this}]})}};const z9=e=>postMessage(e),B9=MI(z9);let V9,H9,U9,W9=!1,G9,K9=0,q9,J9,Y9;const X9=`You are Pi, a coding assistant powered by MiniCPM5-2B, a language model from OpenBMB.
+`+i.stderr:``}\nExit code: ${i.exitCode}`,{exitCode:i.exitCode})}},{name:`read`,label:`Read file`,description:`Read a UTF-8 text file. Use bash head/grep for large files.`,parameters:Sn({path:Yr()}),execute:async(e,t)=>{let n=await r.fs.realpath(i(t.path));return k9(await r.fs.readFile(n),{path:n})}},{name:`write`,label:`Write file`,description:`Create or replace a UTF-8 text file. Parent directories are created.`,parameters:Sn({path:Yr(),content:Yr()}),execute:async(e,t)=>(await o(t.path,t.content),k9(`Wrote `+i(t.path)))},{name:`edit`,label:`Edit file`,description:`Replace one exact occurrence of oldText with newText in a UTF-8 file. oldText must match exactly once.`,parameters:Sn({path:Yr(),oldText:Yr(),newText:Yr()}),execute:async(e,t)=>{let n=await r.fs.readFile(i(t.path));if(!t.oldText||n.split(t.oldText).length!==2)throw Error(`oldText must match exactly once. 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 The model, inference, tools, and workspace run entirely in the user's browser. Workspace files are stored in this browser, not on the user's operating-system filesystem.
 Use your tools to inspect and change actual files. Never claim a command ran or a file changed without a successful tool result.
 When the user explicitly asks you to use a tool, call that tool even if you already know the answer.

assets/{index-CV4PDQqc.js → index-O6siy3P4.js}

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+`,e.startsWith(`+`)&&(t.className=`diff-add`),e.startsWith(`-`)&&(t.className=`diff-remove`),i.append(t)}}}catch{i.textContent=`Binary file · ${t.before===null?0:atob(t.before).length} → ${t.after===null?0:atob(t.after).length} bytes`}n.append(i)}Q(`#review-files`).append(n)}p()}return Q(`#review-changes`).onclick=async()=>{try{n(),g(await e(`local_changes`)),u.showModal()}catch(e){t(e.message)}},Q(`#review-close`).onclick=()=>u.close(),u.addEventListener(`cancel`,e=>{s&&e.preventDefault()}),Q(`#review-apply`).onclick=async()=>{try{if(await i.requestPermission({mode:`readwrite`})!==`granted`)throw Error(`Write access was not granted. Changes are still staged.`);let n=await e(`local_apply`);u.close(),t(`Applied ${n.applied} change${n.applied===1?``:`s`} to ${i.name}.`)}catch(t){try{g(await e(`local_changes`))}catch{}Q(`#review-error`).textContent=t.message}},Q(`#review-discard`).onclick=async()=>{if(window.confirm(`Discard all staged changes and reload files from disk? Your local files will not be changed.`))try{r(await e(`local_discard`)),u.close(),t(`Staged edits discarded. Folder refreshed and chat reset.`)}catch(e){Q(`#review-error`).textContent=e.message}},window.addEventListener(`beforeunload`,e=>{o?.count&&(e.preventDefault(),e.returnValue=``)}),new URLSearchParams(location.search).has(`local-folder`)&&t(`Choose Open local folder to select the project you want Pi to work on.`),{setBusy(e){s=e,p()},setState(e){o=e,a&&e&&(a.count=e.count),p()},restore(e){a=e,p()},get active(){return!!o}}}var $=e=>document.querySelector(e);c_($(`main`),$(`#column-resizer`));var L_=new Worker(new URL(new URL(`agent.worker-yyKS-x2c.js`,import.meta.url).href,``+import.meta.url),{type:`module`}),R_=new Map,z_=1,B_=!1,V_=!1,H_,U_=!1,W_={},G_=[],K_,q_,J_=0,Y_=!0,X_=new Promise(e=>{K_=e}),Z_={events:[],generations:[],runtimeSamples:[],device:null,contextUsage:Ng([])},Q_=Zg($(`#runtime-meter`)),$_=a_($(`.editor-input`)),ev=Ug($(`#pi-terminal`),{onInput:e=>$(`#send`).classList.toggle(`has-input`,!!e.trim()),load:()=>X_.then(hv),prompt:e=>X_.then(()=>gv(e)),newChat:()=>X_.then(_v),stop:()=>iv(`stop`),shell:e=>{if(U_)throw Error(`Save your file edits before running commands.`);return iv(`shell`,{command:e})}}),tv=Wg($(`#model-dialog`),{onClose:()=>ev.focus()}),nv=Xg($(`.workspace > .terminal`),{run:async e=>{if(await X_,U_)throw Error(`Save your file edits before running commands.`);if(B_)throw Error(`Wait for Pi to finish or stop the current task first.`);return iv(`shell`,{command:e})}}),rv=I_({rpc:iv,notice:av,canSwitch(){if(B_)throw Error(`Wait for Pi to finish or stop the current task first.`);if(U_)throw Error(`Save or stage the open file first.`)},onSwitch(e){q_=void 0,H_=void 0,U_=!1,J_++,Y_=!1,W_=e.files,G_=e.messages,rv.setState(e.localFolder),$(`#filename`).textContent=`Select a file`,$(`#filetype`).replaceChildren(),$_.setFile(``,``),ev.setMessages(G_,{reset:!0}),pv(Ng(G_)),$(`#shell-clear`).click(),cv();let t=Object.hasOwn(W_,`/workspace/README.md`)?`/workspace/README.md`:Object.keys(W_).sort()[0];t&&uv(t),sv()}});function iv(e,t){return new Promise((n,r)=>{let i=z_++;R_.set(i,{resolve:n,reject:r}),L_.postMessage({id:i,action:e,args:t})})}function av(e){$(`#notice`).textContent=e,$(`#notice`).hidden=!e}function ov(e){return window.self===window.top||!/denied|storage directory access/i.test(e)?e:($(`#open-tab`).href=location.href,$(`#open-tab`).hidden=!1,`Your browser blocked storage in this embedded app. Open the workspace in a new tab to load the model and save files.`)}function sv(){$(`#load`).disabled=B_||V_,$(`#load`).classList.toggle(`is-loaded`,V_),V_?$(`#load`).textContent=`Loaded`:B_||($(`#load`).textContent=`Load model`),$(`#load`).title=$(`#load-status`).textContent+` `+$(`#load-detail`).textContent,$(`#send`).disabled=B_,$(`#newline`).disabled=B_,ev.setState({busy:B_,loaded:V_,activity:$(`#activity`).textContent}),$(`#stop`).hidden=!B_;for(let e of[`#new-chat`,`#add-file`,`#upload`])$(e).disabled=B_;nv.setBusy(B_),rv.setBusy(B_),$(`#save`).disabled=B_||!H_||!U_,$(`#editor`).disabled=B_||!H_||!Y_}function cv(){ev.setFiles(W_),$(`#files`).replaceChildren();for(let e of Object.keys(W_).sort()){let t=document.createElement(`button`),n=document.createElement(`span`);n.className=`file-name`,n.textContent=e.replace(/^\/workspace\//,``),t.append(t_(e),n),t.title=e,t.classList.toggle(`selected`,e===H_),t.onclick=()=>uv(e),$(`#files`).append(t)}H_&&!Object.hasOwn(W_,H_)&&!U_&&(H_=void 0,J_++,Y_=!1,$(`#filename`).textContent=`Select a file`,$(`#filetype`).replaceChildren(),$_.setFile(``,``),sv()),H_&&!U_&&(W_[H_]===null?lv(H_):(Y_=!0,$_.setFile(H_,W_[H_]??``)))}async function lv(e){let t=++J_;Y_=!1,$_.setFile(e,``,`Loading file…`),sv();try{let n=await iv(`preview`,{path:e});if(t!==J_||e!==H_||U_)return;$_.setFile(e,n),Y_=!0}catch(n){if(t!==J_||e!==H_)return;let r=n.code===`BINARY_FILE`?`No text preview available.
+This file is binary or isn’t UTF-8 text.`:n.code===`FILE_TOO_LARGE`?`File too large to preview (1 MiB limit).`:`Unable to preview this file.
+`+n.message;$_.setFile(e,``,r)}finally{t===J_&&sv()}}function uv(e){if(q_=void 0,U_){av(`Save the open file before selecting another file.`);return}H_=e,$(`#filename`).textContent=e,$(`#filetype`).replaceChildren(t_(e)),cv(),sv()}function dv(){if(U_){q_=void 0;return}if(!q_||!Object.hasOwn(W_,q_))return;let e=q_,t=e!==H_;uv(e),t&&($(`#editor`).scrollTop=0,$(`#editor`).scrollLeft=0);let n=[...$(`#files`).children].find(t=>t.title===e);if(n){let e=n.getBoundingClientRect(),t=$(`#files`).getBoundingClientRect();e.top<t.top?$(`#files`).scrollTop+=e.top-t.top:e.bottom>t.bottom&&($(`#files`).scrollTop+=e.bottom-t.bottom)}}function fv(){ev.setMessages(G_)}function pv(e){Z_.contextUsage=e,ev.setState({contextUsage:e})}L_.onmessage=({data:e})=>{if(Q_.update(e),e.type===`inference_activity`&&(Z_.runtimeSamples.push(e),Z_.runtimeSamples.length>160&&Z_.runtimeSamples.shift()),e.type===`reply`){let t=R_.get(e.id);R_.delete(e.id),e.error?t?.reject(Object.assign(Error(e.error),{name:e.errorName||`Error`,code:e.errorCode})):t?.resolve(e.value)}else if(e.type===`initialized`)rv.restore(e.savedLocal),rv.setState(e.localFolder),W_=e.files,G_=e.messages,cv(),fv(),pv(Ng(G_)),W_[`/workspace/README.md`]&&uv(`/workspace/README.md`),document.activeElement===document.body&&ev.focus(),K_();else if(e.type===`busy`)e.action===`load`&&($(`#load`).textContent=`Loading…`),B_=!0,$(`#activity`).textContent=e.action===`prompt`?`Pi is working…`:e.action===`load`?e.cachedOnly?`Loading local model…`:`Loading model…`:`Working…`,sv();else if(e.type===`idle`)B_=!1,$(`#progress`).hidden=!0,$(`#activity`).textContent=rv.active?`Local folder · review & apply to save changes to disk`:V_?`Ready · running on your device`:`Files and chat are saved on this device.`,sv();else if(e.type===`workspace`)W_=e.files,rv.setState(e.localFolder),cv(),dv();else if(e.type===`device`)Z_.device=e.device;else if(e.type===`load_progress`)$(`#progress`).hidden=!1,e.phase===`download`?($(`#progress`).hidden=!1,$(`#progress`).value=e.loaded/e.total*100,$(`#load-status`).textContent=e.loaded===e.total?`Download verified. 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Model inference and tools run entirely in this browser.`,$(`#load-detail`).textContent=e.cachedBytes?`Verified model restored from browser storage.`:`SHA-256 verified · model cached for next time.`,sv();else if(e.type===`agent_event`){let t=e.event;if(Z_.events.push(t.type),Z_.events.length>500&&Z_.events.shift(),t.message){let e=G_.findIndex(e=>e.timestamp===t.message.timestamp&&e.role===t.message.role&&e.toolCallId===t.message.toolCallId);e<0?G_.push(t.message):G_[e]=t.message,fv()}t.type===`tool_execution_start`&&($(`#activity`).textContent=`Running ${t.toolName}…`),t.type===`tool_execution_end`&&t.toolName===`read`&&!t.isError&&typeof t.result?.details?.path==`string`&&(q_=t.result.details.path,dv()),t.type===`turn_start`&&($(`#activity`).textContent=`Pi is thinking…`),ev.setState({activity:$(`#activity`).textContent})}else e.type===`context_usage`?pv({inputTokens:e.inputTokens,outputTokens:e.outputTokens}):e.type===`generation`?(Z_.generations.push(e),Z_.generations.length>100&&Z_.generations.shift()):e.type===`context_trim`?av(`Older turns were left out of the model context. Your full chat remains saved.`):e.type===`notice`?av(e.text):e.type===`persistence_error`?av(ov(e.error)):e.type===`fatal`&&(V_=!1,av(e.error),sv())},L_.onerror=e=>{Q_.update({type:`fatal`});let t=Error(e.message||`The worker stopped. 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Rename it before importing.`);await iv(`write`,{path:n,content:t}),uv(n)}$(`#upload`).value=``}),$(`#export`).onclick=mv(async()=>{let e=rv.active?{version:1,patches:await iv(`local_changes`)}:await iv(`snapshot`),t=URL.createObjectURL(new Blob([JSON.stringify(e,null,2)],{type:`application/json`})),n=document.createElement(`a`);n.href=t,n.download=rv.active?`pi-staged-changes.json`:`pi-workspace.json`,n.click(),setTimeout(()=>URL.revokeObjectURL(t),1e3)}),window.browserPi={ready:X_,load:hv,prompt:gv,rpc:iv,diagnostics:Z_,terminal:ev,runtimeMeter:Q_,get loaded(){return V_},get busy(){return B_}},sv();

index.html

@@ -21,7 +21,7 @@
   <meta name="twitter:image" content="https://huggingface.co/spaces/Mike0021/MiniCPM5-2B-WebGPU-Pi-HTTP/resolve/main/social-thumbnail-v3.png">
   <meta name="twitter:image:alt" content="A coding agent running entirely in your browser, above the Pi terminal and its pixel cat mascot.">
   <title>Pi · Coding agent in your browser</title>
-  <script type="module" crossorigin src="./assets/index-CV4PDQqc.js"></script>
+  <script type="module" crossorigin src="./assets/index-O6siy3P4.js"></script>
   <link rel="stylesheet" crossorigin href="./assets/index-Uy7sEXBC.css">
 </head>
 <body>

validation/local-folder-live.json

@@ -1,6 +1,6 @@
 {
   "url": "https://mike0021-minicpm5-2b-webgpu-pi-http.static.hf.space/",
-  "date": "2026-09-16T14:27:12.282Z",
+  "date": "2026-09-16T14:30:31.156Z",
   "checks": [
     "Real directory handle crosses worker boundary; picker called with user activation; existing editor/tree reused; excluded directories omitted",
     "Editor changes are staged; readable diff reviewed; Apply writes through the browser API",