It appears you have a well-structured Git repository with various files, including SVG icons and HTML documents. Here's a brief overview:

backend/node_modules/fs-extra/LICENSE

@@ -0,0 +1,15 @@
+(The MIT License)
+
+Copyright (c) 2011-2024 JP Richardson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files
+(the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify,
+ merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backend/node_modules/fs-extra/README.md

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+Node.js: fs-extra
+=================
+
+`fs-extra` adds file system methods that aren't included in the native `fs` module and adds promise support to the `fs` methods. It also uses [`graceful-fs`](https://github.com/isaacs/node-graceful-fs) to prevent `EMFILE` errors. It should be a drop in replacement for `fs`.
+
+[![npm Package](https://img.shields.io/npm/v/fs-extra.svg)](https://www.npmjs.org/package/fs-extra)
+[![License](https://img.shields.io/npm/l/fs-extra.svg)](https://github.com/jprichardson/node-fs-extra/blob/master/LICENSE)
+[![build status](https://img.shields.io/github/actions/workflow/status/jprichardson/node-fs-extra/ci.yml?branch=master)](https://github.com/jprichardson/node-fs-extra/actions/workflows/ci.yml?query=branch%3Amaster)
+[![downloads per month](http://img.shields.io/npm/dm/fs-extra.svg)](https://www.npmjs.org/package/fs-extra)
+[![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)
+
+Why?
+----
+
+I got tired of including `mkdirp`, `rimraf`, and `ncp` in most of my projects.
+
+
+
+
+Installation
+------------
+
+    npm install fs-extra
+
+
+
+Usage
+-----
+
+### CommonJS
+
+`fs-extra` is a drop in replacement for native `fs`. All methods in `fs` are attached to `fs-extra`. All `fs` methods return promises if the callback isn't passed.
+
+You don't ever need to include the original `fs` module again:
+
+```js
+const fs = require('fs') // this is no longer necessary
+```
+
+you can now do this:
+
+```js
+const fs = require('fs-extra')
+```
+
+or if you prefer to make it clear that you're using `fs-extra` and not `fs`, you may want
+to name your `fs` variable `fse` like so:
+
+```js
+const fse = require('fs-extra')
+```
+
+you can also keep both, but it's redundant:
+
+```js
+const fs = require('fs')
+const fse = require('fs-extra')
+```
+
+### ESM
+
+There is also an `fs-extra/esm` import, that supports both default and named exports. However, note that `fs` methods are not included in `fs-extra/esm`; you still need to import `fs` and/or `fs/promises` seperately:
+
+```js
+import { readFileSync } from 'fs'
+import { readFile } from 'fs/promises'
+import { outputFile, outputFileSync } from 'fs-extra/esm'
+```
+
+Default exports are supported:
+
+```js
+import fs from 'fs'
+import fse from 'fs-extra/esm'
+// fse.readFileSync is not a function; must use fs.readFileSync
+```
+
+but you probably want to just use regular `fs-extra` instead of `fs-extra/esm` for default exports:
+
+```js
+import fs from 'fs-extra'
+// both fs and fs-extra methods are defined
+```
+
+Sync vs Async vs Async/Await
+-------------
+Most methods are async by default. All async methods will return a promise if the callback isn't passed.
+
+Sync methods on the other hand will throw if an error occurs.
+
+Also Async/Await will throw an error if one occurs.
+
+Example:
+
+```js
+const fs = require('fs-extra')
+
+// Async with promises:
+fs.copy('/tmp/myfile', '/tmp/mynewfile')
+  .then(() => console.log('success!'))
+  .catch(err => console.error(err))
+
+// Async with callbacks:
+fs.copy('/tmp/myfile', '/tmp/mynewfile', err => {
+  if (err) return console.error(err)
+  console.log('success!')
+})
+
+// Sync:
+try {
+  fs.copySync('/tmp/myfile', '/tmp/mynewfile')
+  console.log('success!')
+} catch (err) {
+  console.error(err)
+}
+
+// Async/Await:
+async function copyFiles () {
+  try {
+    await fs.copy('/tmp/myfile', '/tmp/mynewfile')
+    console.log('success!')
+  } catch (err) {
+    console.error(err)
+  }
+}
+
+copyFiles()
+```
+
+
+Methods
+-------
+
+### Async
+
+- [copy](docs/copy.md)
+- [emptyDir](docs/emptyDir.md)
+- [ensureFile](docs/ensureFile.md)
+- [ensureDir](docs/ensureDir.md)
+- [ensureLink](docs/ensureLink.md)
+- [ensureSymlink](docs/ensureSymlink.md)
+- [mkdirp](docs/ensureDir.md)
+- [mkdirs](docs/ensureDir.md)
+- [move](docs/move.md)
+- [outputFile](docs/outputFile.md)
+- [outputJson](docs/outputJson.md)
+- [pathExists](docs/pathExists.md)
+- [readJson](docs/readJson.md)
+- [remove](docs/remove.md)
+- [writeJson](docs/writeJson.md)
+
+### Sync
+
+- [copySync](docs/copy-sync.md)
+- [emptyDirSync](docs/emptyDir-sync.md)
+- [ensureFileSync](docs/ensureFile-sync.md)
+- [ensureDirSync](docs/ensureDir-sync.md)
+- [ensureLinkSync](docs/ensureLink-sync.md)
+- [ensureSymlinkSync](docs/ensureSymlink-sync.md)
+- [mkdirpSync](docs/ensureDir-sync.md)
+- [mkdirsSync](docs/ensureDir-sync.md)
+- [moveSync](docs/move-sync.md)
+- [outputFileSync](docs/outputFile-sync.md)
+- [outputJsonSync](docs/outputJson-sync.md)
+- [pathExistsSync](docs/pathExists-sync.md)
+- [readJsonSync](docs/readJson-sync.md)
+- [removeSync](docs/remove-sync.md)
+- [writeJsonSync](docs/writeJson-sync.md)
+
+
+**NOTE:** You can still use the native Node.js methods. They are promisified and copied over to `fs-extra`. See [notes on `fs.read()`, `fs.write()`, & `fs.writev()`](docs/fs-read-write-writev.md)
+
+### What happened to `walk()` and `walkSync()`?
+
+They were removed from `fs-extra` in v2.0.0. If you need the functionality, `walk` and `walkSync` are available as separate packages, [`klaw`](https://github.com/jprichardson/node-klaw) and [`klaw-sync`](https://github.com/manidlou/node-klaw-sync).
+
+
+Third Party
+-----------
+
+### CLI
+
+[fse-cli](https://www.npmjs.com/package/@atao60/fse-cli) allows you to run `fs-extra` from a console or from [npm](https://www.npmjs.com) scripts.
+
+### TypeScript
+
+If you like TypeScript, you can use `fs-extra` with it: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/fs-extra
+
+
+### File / Directory Watching
+
+If you want to watch for changes to files or directories, then you should use [chokidar](https://github.com/paulmillr/chokidar).
+
+### Obtain Filesystem (Devices, Partitions) Information
+
+[fs-filesystem](https://github.com/arthurintelligence/node-fs-filesystem) allows you to read the state of the filesystem of the host on which it is run. It returns information about both the devices and the partitions (volumes) of the system.
+
+### Misc.
+
+- [fs-extra-debug](https://github.com/jdxcode/fs-extra-debug) - Send your fs-extra calls to [debug](https://npmjs.org/package/debug).
+- [mfs](https://github.com/cadorn/mfs) - Monitor your fs-extra calls.
+
+
+
+Hacking on fs-extra
+-------------------
+
+Wanna hack on `fs-extra`? Great! Your help is needed! [fs-extra is one of the most depended upon Node.js packages](http://nodei.co/npm/fs-extra.png?downloads=true&downloadRank=true&stars=true). This project
+uses [JavaScript Standard Style](https://github.com/feross/standard) - if the name or style choices bother you,
+you're gonna have to get over it :) If `standard` is good enough for `npm`, it's good enough for `fs-extra`.
+
+[![js-standard-style](https://cdn.rawgit.com/feross/standard/master/badge.svg)](https://github.com/feross/standard)
+
+What's needed?
+- First, take a look at existing issues. Those are probably going to be where the priority lies.
+- More tests for edge cases. Specifically on different platforms. There can never be enough tests.
+- Improve test coverage.
+
+Note: If you make any big changes, **you should definitely file an issue for discussion first.**
+
+### Running the Test Suite
+
+fs-extra contains hundreds of tests.
+
+- `npm run lint`: runs the linter ([standard](http://standardjs.com/))
+- `npm run unit`: runs the unit tests
+- `npm run unit-esm`: runs tests for `fs-extra/esm` exports
+- `npm test`: runs the linter and all tests
+
+When running unit tests, set the environment variable `CROSS_DEVICE_PATH` to the absolute path of an empty directory on another device (like a thumb drive) to enable cross-device move tests.
+
+
+### Windows
+
+If you run the tests on the Windows and receive a lot of symbolic link `EPERM` permission errors, it's
+because on Windows you need elevated privilege to create symbolic links. You can add this to your Windows's
+account by following the instructions here: http://superuser.com/questions/104845/permission-to-make-symbolic-links-in-windows-7
+However, I didn't have much luck doing this.
+
+Since I develop on Mac OS X, I use VMWare Fusion for Windows testing. I create a shared folder that I map to a drive on Windows.
+I open the `Node.js command prompt` and run as `Administrator`. I then map the network drive running the following command:
+
+    net use z: "\\vmware-host\Shared Folders"
+
+I can then navigate to my `fs-extra` directory and run the tests.
+
+
+Naming
+------
+
+I put a lot of thought into the naming of these functions. Inspired by @coolaj86's request. So he deserves much of the credit for raising the issue. See discussion(s) here:
+
+* https://github.com/jprichardson/node-fs-extra/issues/2
+* https://github.com/flatiron/utile/issues/11
+* https://github.com/ryanmcgrath/wrench-js/issues/29
+* https://github.com/substack/node-mkdirp/issues/17
+
+First, I believe that in as many cases as possible, the [Node.js naming schemes](http://nodejs.org/api/fs.html) should be chosen. However, there are problems with the Node.js own naming schemes.
+
+For example, `fs.readFile()` and `fs.readdir()`: the **F** is capitalized in *File* and the **d** is not capitalized in *dir*. Perhaps a bit pedantic, but they should still be consistent. Also, Node.js has chosen a lot of POSIX naming schemes, which I believe is great. See: `fs.mkdir()`, `fs.rmdir()`, `fs.chown()`, etc.
+
+We have a dilemma though. How do you consistently name methods that perform the following POSIX commands: `cp`, `cp -r`, `mkdir -p`, and `rm -rf`?
+
+My perspective: when in doubt, err on the side of simplicity. A directory is just a hierarchical grouping of directories and files. Consider that for a moment. So when you want to copy it or remove it, in most cases you'll want to copy or remove all of its contents. When you want to create a directory, if the directory that it's suppose to be contained in does not exist, then in most cases you'll want to create that too.
+
+So, if you want to remove a file or a directory regardless of whether it has contents, just call `fs.remove(path)`. If you want to copy a file or a directory whether it has contents, just call `fs.copy(source, destination)`. If you want to create a directory regardless of whether its parent directories exist, just call `fs.mkdirs(path)` or `fs.mkdirp(path)`.
+
+
+Credit
+------
+
+`fs-extra` wouldn't be possible without using the modules from the following authors:
+
+- [Isaac Shlueter](https://github.com/isaacs)
+- [Charlie McConnel](https://github.com/avianflu)
+- [James Halliday](https://github.com/substack)
+- [Andrew Kelley](https://github.com/andrewrk)
+
+
+
+
+License
+-------
+
+Licensed under MIT
+
+Copyright (c) 2011-2024 [JP Richardson](https://github.com/jprichardson)
+
+[1]: http://nodejs.org/docs/latest/api/fs.html
+
+
+[jsonfile]: https://github.com/jprichardson/node-jsonfile

backend/node_modules/fs-extra/lib/copy/copy-sync.js

@@ -0,0 +1,171 @@
+'use strict'
+
+const fs = require('graceful-fs')
+const path = require('path')
+const mkdirsSync = require('../mkdirs').mkdirsSync
+const utimesMillisSync = require('../util/utimes').utimesMillisSync
+const stat = require('../util/stat')
+
+function copySync (src, dest, opts) {
+  if (typeof opts === 'function') {
+    opts = { filter: opts }
+  }
+
+  opts = opts || {}
+  opts.clobber = 'clobber' in opts ? !!opts.clobber : true // default to true for now
+  opts.overwrite = 'overwrite' in opts ? !!opts.overwrite : opts.clobber // overwrite falls back to clobber
+
+  // Warn about using preserveTimestamps on 32-bit node
+  if (opts.preserveTimestamps && process.arch === 'ia32') {
+    process.emitWarning(
+      'Using the preserveTimestamps option in 32-bit node is not recommended;\n\n' +
+      '\tsee https://github.com/jprichardson/node-fs-extra/issues/269',
+      'Warning', 'fs-extra-WARN0002'
+    )
+  }
+
+  const { srcStat, destStat } = stat.checkPathsSync(src, dest, 'copy', opts)
+  stat.checkParentPathsSync(src, srcStat, dest, 'copy')
+  if (opts.filter && !opts.filter(src, dest)) return
+  const destParent = path.dirname(dest)
+  if (!fs.existsSync(destParent)) mkdirsSync(destParent)
+  return getStats(destStat, src, dest, opts)
+}
+
+function getStats (destStat, src, dest, opts) {
+  const statSync = opts.dereference ? fs.statSync : fs.lstatSync
+  const srcStat = statSync(src)
+
+  if (srcStat.isDirectory()) return onDir(srcStat, destStat, src, dest, opts)
+  else if (srcStat.isFile() ||
+           srcStat.isCharacterDevice() ||
+           srcStat.isBlockDevice()) return onFile(srcStat, destStat, src, dest, opts)
+  else if (srcStat.isSymbolicLink()) return onLink(destStat, src, dest, opts)
+  else if (srcStat.isSocket()) throw new Error(`Cannot copy a socket file: ${src}`)
+  else if (srcStat.isFIFO()) throw new Error(`Cannot copy a FIFO pipe: ${src}`)
+  throw new Error(`Unknown file: ${src}`)
+}
+
+function onFile (srcStat, destStat, src, dest, opts) {
+  if (!destStat) return copyFile(srcStat, src, dest, opts)
+  return mayCopyFile(srcStat, src, dest, opts)
+}
+
+function mayCopyFile (srcStat, src, dest, opts) {
+  if (opts.overwrite) {
+    fs.unlinkSync(dest)
+    return copyFile(srcStat, src, dest, opts)
+  } else if (opts.errorOnExist) {
+    throw new Error(`'${dest}' already exists`)
+  }
+}
+
+function copyFile (srcStat, src, dest, opts) {
+  fs.copyFileSync(src, dest)
+  if (opts.preserveTimestamps) handleTimestamps(srcStat.mode, src, dest)
+  return setDestMode(dest, srcStat.mode)
+}
+
+function handleTimestamps (srcMode, src, dest) {
+  // Make sure the file is writable before setting the timestamp
+  // otherwise open fails with EPERM when invoked with 'r+'
+  // (through utimes call)
+  if (fileIsNotWritable(srcMode)) makeFileWritable(dest, srcMode)
+  return setDestTimestamps(src, dest)
+}
+
+function fileIsNotWritable (srcMode) {
+  return (srcMode & 0o200) === 0
+}
+
+function makeFileWritable (dest, srcMode) {
+  return setDestMode(dest, srcMode | 0o200)
+}
+
+function setDestMode (dest, srcMode) {
+  return fs.chmodSync(dest, srcMode)
+}
+
+function setDestTimestamps (src, dest) {
+  // The initial srcStat.atime cannot be trusted
+  // because it is modified by the read(2) system call
+  // (See https://nodejs.org/api/fs.html#fs_stat_time_values)
+  const updatedSrcStat = fs.statSync(src)
+  return utimesMillisSync(dest, updatedSrcStat.atime, updatedSrcStat.mtime)
+}
+
+function onDir (srcStat, destStat, src, dest, opts) {
+  if (!destStat) return mkDirAndCopy(srcStat.mode, src, dest, opts)
+  return copyDir(src, dest, opts)
+}
+
+function mkDirAndCopy (srcMode, src, dest, opts) {
+  fs.mkdirSync(dest)
+  copyDir(src, dest, opts)
+  return setDestMode(dest, srcMode)
+}
+
+function copyDir (src, dest, opts) {
+  const dir = fs.opendirSync(src)
+
+  try {
+    let dirent
+
+    while ((dirent = dir.readSync()) !== null) {
+      copyDirItem(dirent.name, src, dest, opts)
+    }
+  } finally {
+    dir.closeSync()
+  }
+}
+
+function copyDirItem (item, src, dest, opts) {
+  const srcItem = path.join(src, item)
+  const destItem = path.join(dest, item)
+  if (opts.filter && !opts.filter(srcItem, destItem)) return
+  const { destStat } = stat.checkPathsSync(srcItem, destItem, 'copy', opts)
+  return getStats(destStat, srcItem, destItem, opts)
+}
+
+function onLink (destStat, src, dest, opts) {
+  let resolvedSrc = fs.readlinkSync(src)
+  if (opts.dereference) {
+    resolvedSrc = path.resolve(process.cwd(), resolvedSrc)
+  }
+
+  if (!destStat) {
+    return fs.symlinkSync(resolvedSrc, dest)
+  } else {
+    let resolvedDest
+    try {
+      resolvedDest = fs.readlinkSync(dest)
+    } catch (err) {
+      // dest exists and is a regular file or directory,
+      // Windows may throw UNKNOWN error. If dest already exists,
+      // fs throws error anyway, so no need to guard against it here.
+      if (err.code === 'EINVAL' || err.code === 'UNKNOWN') return fs.symlinkSync(resolvedSrc, dest)
+      throw err
+    }
+    if (opts.dereference) {
+      resolvedDest = path.resolve(process.cwd(), resolvedDest)
+    }
+    if (stat.isSrcSubdir(resolvedSrc, resolvedDest)) {
+      throw new Error(`Cannot copy '${resolvedSrc}' to a subdirectory of itself, '${resolvedDest}'.`)
+    }
+
+    // prevent copy if src is a subdir of dest since unlinking
+    // dest in this case would result in removing src contents
+    // and therefore a broken symlink would be created.
+    if (stat.isSrcSubdir(resolvedDest, resolvedSrc)) {
+      throw new Error(`Cannot overwrite '${resolvedDest}' with '${resolvedSrc}'.`)
+    }
+    return copyLink(resolvedSrc, dest)
+  }
+}
+
+function copyLink (resolvedSrc, dest) {
+  fs.unlinkSync(dest)
+  return fs.symlinkSync(resolvedSrc, dest)
+}
+
+module.exports = copySync

backend/node_modules/fs-extra/lib/copy/copy.js

@@ -0,0 +1,182 @@
+'use strict'
+
+const fs = require('../fs')
+const path = require('path')
+const { mkdirs } = require('../mkdirs')
+const { pathExists } = require('../path-exists')
+const { utimesMillis } = require('../util/utimes')
+const stat = require('../util/stat')
+
+async function copy (src, dest, opts = {}) {
+  if (typeof opts === 'function') {
+    opts = { filter: opts }
+  }
+
+  opts.clobber = 'clobber' in opts ? !!opts.clobber : true // default to true for now
+  opts.overwrite = 'overwrite' in opts ? !!opts.overwrite : opts.clobber // overwrite falls back to clobber
+
+  // Warn about using preserveTimestamps on 32-bit node
+  if (opts.preserveTimestamps && process.arch === 'ia32') {
+    process.emitWarning(
+      'Using the preserveTimestamps option in 32-bit node is not recommended;\n\n' +
+      '\tsee https://github.com/jprichardson/node-fs-extra/issues/269',
+      'Warning', 'fs-extra-WARN0001'
+    )
+  }
+
+  const { srcStat, destStat } = await stat.checkPaths(src, dest, 'copy', opts)
+
+  await stat.checkParentPaths(src, srcStat, dest, 'copy')
+
+  const include = await runFilter(src, dest, opts)
+
+  if (!include) return
+
+  // check if the parent of dest exists, and create it if it doesn't exist
+  const destParent = path.dirname(dest)
+  const dirExists = await pathExists(destParent)
+  if (!dirExists) {
+    await mkdirs(destParent)
+  }
+
+  await getStatsAndPerformCopy(destStat, src, dest, opts)
+}
+
+async function runFilter (src, dest, opts) {
+  if (!opts.filter) return true
+  return opts.filter(src, dest)
+}
+
+async function getStatsAndPerformCopy (destStat, src, dest, opts) {
+  const statFn = opts.dereference ? fs.stat : fs.lstat
+  const srcStat = await statFn(src)
+
+  if (srcStat.isDirectory()) return onDir(srcStat, destStat, src, dest, opts)
+
+  if (
+    srcStat.isFile() ||
+    srcStat.isCharacterDevice() ||
+    srcStat.isBlockDevice()
+  ) return onFile(srcStat, destStat, src, dest, opts)
+
+  if (srcStat.isSymbolicLink()) return onLink(destStat, src, dest, opts)
+  if (srcStat.isSocket()) throw new Error(`Cannot copy a socket file: ${src}`)
+  if (srcStat.isFIFO()) throw new Error(`Cannot copy a FIFO pipe: ${src}`)
+  throw new Error(`Unknown file: ${src}`)
+}
+
+async function onFile (srcStat, destStat, src, dest, opts) {
+  if (!destStat) return copyFile(srcStat, src, dest, opts)
+
+  if (opts.overwrite) {
+    await fs.unlink(dest)
+    return copyFile(srcStat, src, dest, opts)
+  }
+  if (opts.errorOnExist) {
+    throw new Error(`'${dest}' already exists`)
+  }
+}
+
+async function copyFile (srcStat, src, dest, opts) {
+  await fs.copyFile(src, dest)
+  if (opts.preserveTimestamps) {
+    // Make sure the file is writable before setting the timestamp
+    // otherwise open fails with EPERM when invoked with 'r+'
+    // (through utimes call)
+    if (fileIsNotWritable(srcStat.mode)) {
+      await makeFileWritable(dest, srcStat.mode)
+    }
+
+    // Set timestamps and mode correspondingly
+
+    // Note that The initial srcStat.atime cannot be trusted
+    // because it is modified by the read(2) system call
+    // (See https://nodejs.org/api/fs.html#fs_stat_time_values)
+    const updatedSrcStat = await fs.stat(src)
+    await utimesMillis(dest, updatedSrcStat.atime, updatedSrcStat.mtime)
+  }
+
+  return fs.chmod(dest, srcStat.mode)
+}
+
+function fileIsNotWritable (srcMode) {
+  return (srcMode & 0o200) === 0
+}
+
+function makeFileWritable (dest, srcMode) {
+  return fs.chmod(dest, srcMode | 0o200)
+}
+
+async function onDir (srcStat, destStat, src, dest, opts) {
+  // the dest directory might not exist, create it
+  if (!destStat) {
+    await fs.mkdir(dest)
+  }
+
+  const promises = []
+
+  // loop through the files in the current directory to copy everything
+  for await (const item of await fs.opendir(src)) {
+    const srcItem = path.join(src, item.name)
+    const destItem = path.join(dest, item.name)
+
+    promises.push(
+      runFilter(srcItem, destItem, opts).then(include => {
+        if (include) {
+          // only copy the item if it matches the filter function
+          return stat.checkPaths(srcItem, destItem, 'copy', opts).then(({ destStat }) => {
+            // If the item is a copyable file, `getStatsAndPerformCopy` will copy it
+            // If the item is a directory, `getStatsAndPerformCopy` will call `onDir` recursively
+            return getStatsAndPerformCopy(destStat, srcItem, destItem, opts)
+          })
+        }
+      })
+    )
+  }
+
+  await Promise.all(promises)
+
+  if (!destStat) {
+    await fs.chmod(dest, srcStat.mode)
+  }
+}
+
+async function onLink (destStat, src, dest, opts) {
+  let resolvedSrc = await fs.readlink(src)
+  if (opts.dereference) {
+    resolvedSrc = path.resolve(process.cwd(), resolvedSrc)
+  }
+  if (!destStat) {
+    return fs.symlink(resolvedSrc, dest)
+  }
+
+  let resolvedDest = null
+  try {
+    resolvedDest = await fs.readlink(dest)
+  } catch (e) {
+    // dest exists and is a regular file or directory,
+    // Windows may throw UNKNOWN error. If dest already exists,
+    // fs throws error anyway, so no need to guard against it here.
+    if (e.code === 'EINVAL' || e.code === 'UNKNOWN') return fs.symlink(resolvedSrc, dest)
+    throw e
+  }
+  if (opts.dereference) {
+    resolvedDest = path.resolve(process.cwd(), resolvedDest)
+  }
+  if (stat.isSrcSubdir(resolvedSrc, resolvedDest)) {
+    throw new Error(`Cannot copy '${resolvedSrc}' to a subdirectory of itself, '${resolvedDest}'.`)
+  }
+
+  // do not copy if src is a subdir of dest since unlinking
+  // dest in this case would result in removing src contents
+  // and therefore a broken symlink would be created.
+  if (stat.isSrcSubdir(resolvedDest, resolvedSrc)) {
+    throw new Error(`Cannot overwrite '${resolvedDest}' with '${resolvedSrc}'.`)
+  }
+
+  // copy the link
+  await fs.unlink(dest)
+  return fs.symlink(resolvedSrc, dest)
+}
+
+module.exports = copy

backend/node_modules/fs-extra/lib/copy/index.js

@@ -0,0 +1,7 @@
+'use strict'
+
+const u = require('universalify').fromPromise
+module.exports = {
+  copy: u(require('./copy')),
+  copySync: require('./copy-sync')
+}

backend/node_modules/fs-extra/lib/empty/index.js

@@ -0,0 +1,39 @@
+'use strict'
+
+const u = require('universalify').fromPromise
+const fs = require('../fs')
+const path = require('path')
+const mkdir = require('../mkdirs')
+const remove = require('../remove')
+
+const emptyDir = u(async function emptyDir (dir) {
+  let items
+  try {
+    items = await fs.readdir(dir)
+  } catch {
+    return mkdir.mkdirs(dir)
+  }
+
+  return Promise.all(items.map(item => remove.remove(path.join(dir, item))))
+})
+
+function emptyDirSync (dir) {
+  let items
+  try {
+    items = fs.readdirSync(dir)
+  } catch {
+    return mkdir.mkdirsSync(dir)
+  }
+
+  items.forEach(item => {
+    item = path.join(dir, item)
+    remove.removeSync(item)
+  })
+}
+
+module.exports = {
+  emptyDirSync,
+  emptydirSync: emptyDirSync,
+  emptyDir,
+  emptydir: emptyDir
+}

backend/node_modules/fs-extra/lib/ensure/file.js

@@ -0,0 +1,66 @@
+'use strict'
+
+const u = require('universalify').fromPromise
+const path = require('path')
+const fs = require('../fs')
+const mkdir = require('../mkdirs')
+
+async function createFile (file) {
+  let stats
+  try {
+    stats = await fs.stat(file)
+  } catch { }
+  if (stats && stats.isFile()) return
+
+  const dir = path.dirname(file)
+
+  let dirStats = null
+  try {
+    dirStats = await fs.stat(dir)
+  } catch (err) {
+    // if the directory doesn't exist, make it
+    if (err.code === 'ENOENT') {
+      await mkdir.mkdirs(dir)
+      await fs.writeFile(file, '')
+      return
+    } else {
+      throw err
+    }
+  }
+
+  if (dirStats.isDirectory()) {
+    await fs.writeFile(file, '')
+  } else {
+    // parent is not a directory
+    // This is just to cause an internal ENOTDIR error to be thrown
+    await fs.readdir(dir)
+  }
+}
+
+function createFileSync (file) {
+  let stats
+  try {
+    stats = fs.statSync(file)
+  } catch { }
+  if (stats && stats.isFile()) return
+
+  const dir = path.dirname(file)
+  try {
+    if (!fs.statSync(dir).isDirectory()) {
+      // parent is not a directory
+      // This is just to cause an internal ENOTDIR error to be thrown
+      fs.readdirSync(dir)
+    }
+  } catch (err) {
+    // If the stat call above failed because the directory doesn't exist, create it
+    if (err && err.code === 'ENOENT') mkdir.mkdirsSync(dir)
+    else throw err
+  }
+
+  fs.writeFileSync(file, '')
+}
+
+module.exports = {
+  createFile: u(createFile),
+  createFileSync
+}

backend/node_modules/fs-extra/lib/ensure/index.js

@@ -0,0 +1,23 @@
+'use strict'
+
+const { createFile, createFileSync } = require('./file')
+const { createLink, createLinkSync } = require('./link')
+const { createSymlink, createSymlinkSync } = require('./symlink')
+
+module.exports = {
+  // file
+  createFile,
+  createFileSync,
+  ensureFile: createFile,
+  ensureFileSync: createFileSync,
+  // link
+  createLink,
+  createLinkSync,
+  ensureLink: createLink,
+  ensureLinkSync: createLinkSync,
+  // symlink
+  createSymlink,
+  createSymlinkSync,
+  ensureSymlink: createSymlink,
+  ensureSymlinkSync: createSymlinkSync
+}

backend/node_modules/fs-extra/lib/ensure/link.js

@@ -0,0 +1,64 @@
+'use strict'
+
+const u = require('universalify').fromPromise
+const path = require('path')
+const fs = require('../fs')
+const mkdir = require('../mkdirs')
+const { pathExists } = require('../path-exists')
+const { areIdentical } = require('../util/stat')
+
+async function createLink (srcpath, dstpath) {
+  let dstStat
+  try {
+    dstStat = await fs.lstat(dstpath)
+  } catch {
+    // ignore error
+  }
+
+  let srcStat
+  try {
+    srcStat = await fs.lstat(srcpath)
+  } catch (err) {
+    err.message = err.message.replace('lstat', 'ensureLink')
+    throw err
+  }
+
+  if (dstStat && areIdentical(srcStat, dstStat)) return
+
+  const dir = path.dirname(dstpath)
+
+  const dirExists = await pathExists(dir)
+
+  if (!dirExists) {
+    await mkdir.mkdirs(dir)
+  }
+
+  await fs.link(srcpath, dstpath)
+}
+
+function createLinkSync (srcpath, dstpath) {
+  let dstStat
+  try {
+    dstStat = fs.lstatSync(dstpath)
+  } catch {}
+
+  try {
+    const srcStat = fs.lstatSync(srcpath)
+    if (dstStat && areIdentical(srcStat, dstStat)) return
+  } catch (err) {
+    err.message = err.message.replace('lstat', 'ensureLink')
+    throw err
+  }
+
+  const dir = path.dirname(dstpath)
+  const dirExists = fs.existsSync(dir)
+  if (dirExists) return fs.linkSync(srcpath, dstpath)
+  mkdir.mkdirsSync(dir)
+
+  return fs.linkSync(srcpath, dstpath)
+}
+
+module.exports = {
+  createLink: u(createLink),
+  createLinkSync
+}

backend/node_modules/fs-extra/lib/ensure/symlink-paths.js

@@ -0,0 +1,101 @@
+'use strict'
+
+const path = require('path')
+const fs = require('../fs')
+const { pathExists } = require('../path-exists')
+
+const u = require('universalify').fromPromise
+
+/**
+ * Function that returns two types of paths, one relative to symlink, and one
+ * relative to the current working directory. Checks if path is absolute or
+ * relative. If the path is relative, this function checks if the path is
+ * relative to symlink or relative to current working directory. This is an
+ * initiative to find a smarter `srcpath` to supply when building symlinks.
+ * This allows you to determine which path to use out of one of three possible
+ * types of source paths. The first is an absolute path. This is detected by
+ * `path.isAbsolute()`. When an absolute path is provided, it is checked to
+ * see if it exists. If it does it's used, if not an error is returned
+ * (callback)/ thrown (sync). The other two options for `srcpath` are a
+ * relative url. By default Node's `fs.symlink` works by creating a symlink
+ * using `dstpath` and expects the `srcpath` to be relative to the newly
+ * created symlink. If you provide a `srcpath` that does not exist on the file
+ * system it results in a broken symlink. To minimize this, the function
+ * checks to see if the 'relative to symlink' source file exists, and if it
+ * does it will use it. If it does not, it checks if there's a file that
+ * exists that is relative to the current working directory, if does its used.
+ * This preserves the expectations of the original fs.symlink spec and adds
+ * the ability to pass in `relative to current working direcotry` paths.
+ */
+
+async function symlinkPaths (srcpath, dstpath) {
+  if (path.isAbsolute(srcpath)) {
+    try {
+      await fs.lstat(srcpath)
+    } catch (err) {
+      err.message = err.message.replace('lstat', 'ensureSymlink')
+      throw err
+    }
+
+    return {
+      toCwd: srcpath,
+      toDst: srcpath
+    }
+  }
+
+  const dstdir = path.dirname(dstpath)
+  const relativeToDst = path.join(dstdir, srcpath)
+
+  const exists = await pathExists(relativeToDst)
+  if (exists) {
+    return {
+      toCwd: relativeToDst,
+      toDst: srcpath
+    }
+  }
+
+  try {
+    await fs.lstat(srcpath)
+  } catch (err) {
+    err.message = err.message.replace('lstat', 'ensureSymlink')
+    throw err
+  }
+
+  return {
+    toCwd: srcpath,
+    toDst: path.relative(dstdir, srcpath)
+  }
+}
+
+function symlinkPathsSync (srcpath, dstpath) {
+  if (path.isAbsolute(srcpath)) {
+    const exists = fs.existsSync(srcpath)
+    if (!exists) throw new Error('absolute srcpath does not exist')
+    return {
+      toCwd: srcpath,
+      toDst: srcpath
+    }
+  }
+
+  const dstdir = path.dirname(dstpath)
+  const relativeToDst = path.join(dstdir, srcpath)
+  const exists = fs.existsSync(relativeToDst)
+  if (exists) {
+    return {
+      toCwd: relativeToDst,
+      toDst: srcpath
+    }
+  }
+
+  const srcExists = fs.existsSync(srcpath)
+  if (!srcExists) throw new Error('relative srcpath does not exist')
+  return {
+    toCwd: srcpath,
+    toDst: path.relative(dstdir, srcpath)
+  }
+}
+
+module.exports = {
+  symlinkPaths: u(symlinkPaths),
+  symlinkPathsSync
+}

backend/node_modules/fs-extra/lib/ensure/symlink-type.js

@@ -0,0 +1,34 @@
+'use strict'
+
+const fs = require('../fs')
+const u = require('universalify').fromPromise
+
+async function symlinkType (srcpath, type) {
+  if (type) return type
+
+  let stats
+  try {
+    stats = await fs.lstat(srcpath)
+  } catch {
+    return 'file'
+  }
+
+  return (stats && stats.isDirectory()) ? 'dir' : 'file'
+}
+
+function symlinkTypeSync (srcpath, type) {
+  if (type) return type
+
+  let stats
+  try {
+    stats = fs.lstatSync(srcpath)
+  } catch {
+    return 'file'
+  }
+  return (stats && stats.isDirectory()) ? 'dir' : 'file'
+}
+
+module.exports = {
+  symlinkType: u(symlinkType),
+  symlinkTypeSync
+}

backend/node_modules/fs-extra/lib/ensure/symlink.js

@@ -0,0 +1,67 @@
+'use strict'
+
+const u = require('universalify').fromPromise
+const path = require('path')
+const fs = require('../fs')
+
+const { mkdirs, mkdirsSync } = require('../mkdirs')
+
+const { symlinkPaths, symlinkPathsSync } = require('./symlink-paths')
+const { symlinkType, symlinkTypeSync } = require('./symlink-type')
+
+const { pathExists } = require('../path-exists')
+
+const { areIdentical } = require('../util/stat')
+
+async function createSymlink (srcpath, dstpath, type) {
+  let stats
+  try {
+    stats = await fs.lstat(dstpath)
+  } catch { }
+
+  if (stats && stats.isSymbolicLink()) {
+    const [srcStat, dstStat] = await Promise.all([
+      fs.stat(srcpath),
+      fs.stat(dstpath)
+    ])
+
+    if (areIdentical(srcStat, dstStat)) return
+  }
+
+  const relative = await symlinkPaths(srcpath, dstpath)
+  srcpath = relative.toDst
+  const toType = await symlinkType(relative.toCwd, type)
+  const dir = path.dirname(dstpath)
+
+  if (!(await pathExists(dir))) {
+    await mkdirs(dir)
+  }
+
+  return fs.symlink(srcpath, dstpath, toType)
+}
+
+function createSymlinkSync (srcpath, dstpath, type) {
+  let stats
+  try {
+    stats = fs.lstatSync(dstpath)
+  } catch { }
+  if (stats && stats.isSymbolicLink()) {
+    const srcStat = fs.statSync(srcpath)
+    const dstStat = fs.statSync(dstpath)
+    if (areIdentical(srcStat, dstStat)) return
+  }
+
+  const relative = symlinkPathsSync(srcpath, dstpath)
+  srcpath = relative.toDst
+  type = symlinkTypeSync(relative.toCwd, type)
+  const dir = path.dirname(dstpath)
+  const exists = fs.existsSync(dir)
+  if (exists) return fs.symlinkSync(srcpath, dstpath, type)
+  mkdirsSync(dir)
+  return fs.symlinkSync(srcpath, dstpath, type)
+}
+
+module.exports = {
+  createSymlink: u(createSymlink),
+  createSymlinkSync
+}

backend/node_modules/fs-extra/lib/esm.mjs

@@ -0,0 +1,68 @@
+import _copy from './copy/index.js'
+import _empty from './empty/index.js'
+import _ensure from './ensure/index.js'
+import _json from './json/index.js'
+import _mkdirs from './mkdirs/index.js'
+import _move from './move/index.js'
+import _outputFile from './output-file/index.js'
+import _pathExists from './path-exists/index.js'
+import _remove from './remove/index.js'
+
+// NOTE: Only exports fs-extra's functions; fs functions must be imported from "node:fs" or "node:fs/promises"
+
+export const copy = _copy.copy
+export const copySync = _copy.copySync
+export const emptyDirSync = _empty.emptyDirSync
+export const emptydirSync = _empty.emptydirSync
+export const emptyDir = _empty.emptyDir
+export const emptydir = _empty.emptydir
+export const createFile = _ensure.createFile
+export const createFileSync = _ensure.createFileSync
+export const ensureFile = _ensure.ensureFile
+export const ensureFileSync = _ensure.ensureFileSync
+export const createLink = _ensure.createLink
+export const createLinkSync = _ensure.createLinkSync
+export const ensureLink = _ensure.ensureLink
+export const ensureLinkSync = _ensure.ensureLinkSync
+export const createSymlink = _ensure.createSymlink
+export const createSymlinkSync = _ensure.createSymlinkSync
+export const ensureSymlink = _ensure.ensureSymlink
+export const ensureSymlinkSync = _ensure.ensureSymlinkSync
+export const readJson = _json.readJson
+export const readJSON = _json.readJSON
+export const readJsonSync = _json.readJsonSync
+export const readJSONSync = _json.readJSONSync
+export const writeJson = _json.writeJson
+export const writeJSON = _json.writeJSON
+export const writeJsonSync = _json.writeJsonSync
+export const writeJSONSync = _json.writeJSONSync
+export const outputJson = _json.outputJson
+export const outputJSON = _json.outputJSON
+export const outputJsonSync = _json.outputJsonSync
+export const outputJSONSync = _json.outputJSONSync
+export const mkdirs = _mkdirs.mkdirs
+export const mkdirsSync = _mkdirs.mkdirsSync
+export const mkdirp = _mkdirs.mkdirp
+export const mkdirpSync = _mkdirs.mkdirpSync
+export const ensureDir = _mkdirs.ensureDir
+export const ensureDirSync = _mkdirs.ensureDirSync
+export const move = _move.move
+export const moveSync = _move.moveSync
+export const outputFile = _outputFile.outputFile
+export const outputFileSync = _outputFile.outputFileSync
+export const pathExists = _pathExists.pathExists
+export const pathExistsSync = _pathExists.pathExistsSync
+export const remove = _remove.remove
+export const removeSync = _remove.removeSync
+
+export default {
+  ..._copy,
+  ..._empty,
+  ..._ensure,
+  ..._json,
+  ..._mkdirs,
+  ..._move,
+  ..._outputFile,
+  ..._pathExists,
+  ..._remove
+}

backend/node_modules/fs-extra/lib/fs/index.js

@@ -0,0 +1,146 @@
+'use strict'
+// This is adapted from https://github.com/normalize/mz
+// Copyright (c) 2014-2016 Jonathan Ong me@jongleberry.com and Contributors
+const u = require('universalify').fromCallback
+const fs = require('graceful-fs')
+
+const api = [
+  'access',
+  'appendFile',
+  'chmod',
+  'chown',
+  'close',
+  'copyFile',
+  'cp',
+  'fchmod',
+  'fchown',
+  'fdatasync',
+  'fstat',
+  'fsync',
+  'ftruncate',
+  'futimes',
+  'glob',
+  'lchmod',
+  'lchown',
+  'lutimes',
+  'link',
+  'lstat',
+  'mkdir',
+  'mkdtemp',
+  'open',
+  'opendir',
+  'readdir',
+  'readFile',
+  'readlink',
+  'realpath',
+  'rename',
+  'rm',
+  'rmdir',
+  'stat',
+  'statfs',
+  'symlink',
+  'truncate',
+  'unlink',
+  'utimes',
+  'writeFile'
+].filter(key => {
+  // Some commands are not available on some systems. Ex:
+  // fs.cp was added in Node.js v16.7.0
+  // fs.statfs was added in Node v19.6.0, v18.15.0
+  // fs.glob was added in Node.js v22.0.0
+  // fs.lchown is not available on at least some Linux
+  return typeof fs[key] === 'function'
+})
+
+// Export cloned fs:
+Object.assign(exports, fs)
+
+// Universalify async methods:
+api.forEach(method => {
+  exports[method] = u(fs[method])
+})
+
+// We differ from mz/fs in that we still ship the old, broken, fs.exists()
+// since we are a drop-in replacement for the native module
+exports.exists = function (filename, callback) {
+  if (typeof callback === 'function') {
+    return fs.exists(filename, callback)
+  }
+  return new Promise(resolve => {
+    return fs.exists(filename, resolve)
+  })
+}
+
+// fs.read(), fs.write(), fs.readv(), & fs.writev() need special treatment due to multiple callback args
+
+exports.read = function (fd, buffer, offset, length, position, callback) {
+  if (typeof callback === 'function') {
+    return fs.read(fd, buffer, offset, length, position, callback)
+  }
+  return new Promise((resolve, reject) => {
+    fs.read(fd, buffer, offset, length, position, (err, bytesRead, buffer) => {
+      if (err) return reject(err)
+      resolve({ bytesRead, buffer })
+    })
+  })
+}
+
+// Function signature can be
+// fs.write(fd, buffer[, offset[, length[, position]]], callback)
+// OR
+// fs.write(fd, string[, position[, encoding]], callback)
+// We need to handle both cases, so we use ...args
+exports.write = function (fd, buffer, ...args) {
+  if (typeof args[args.length - 1] === 'function') {
+    return fs.write(fd, buffer, ...args)
+  }
+
+  return new Promise((resolve, reject) => {
+    fs.write(fd, buffer, ...args, (err, bytesWritten, buffer) => {
+      if (err) return reject(err)
+      resolve({ bytesWritten, buffer })
+    })
+  })
+}
+
+// Function signature is
+// s.readv(fd, buffers[, position], callback)
+// We need to handle the optional arg, so we use ...args
+exports.readv = function (fd, buffers, ...args) {
+  if (typeof args[args.length - 1] === 'function') {
+    return fs.readv(fd, buffers, ...args)
+  }
+
+  return new Promise((resolve, reject) => {
+    fs.readv(fd, buffers, ...args, (err, bytesRead, buffers) => {
+      if (err) return reject(err)
+      resolve({ bytesRead, buffers })
+    })
+  })
+}
+
+// Function signature is
+// s.writev(fd, buffers[, position], callback)
+// We need to handle the optional arg, so we use ...args
+exports.writev = function (fd, buffers, ...args) {
+  if (typeof args[args.length - 1] === 'function') {
+    return fs.writev(fd, buffers, ...args)
+  }
+
+  return new Promise((resolve, reject) => {
+    fs.writev(fd, buffers, ...args, (err, bytesWritten, buffers) => {
+      if (err) return reject(err)
+      resolve({ bytesWritten, buffers })
+    })
+  })
+}
+
+// fs.realpath.native sometimes not available if fs is monkey-patched
+if (typeof fs.realpath.native === 'function') {
+  exports.realpath.native = u(fs.realpath.native)
+} else {
+  process.emitWarning(
+    'fs.realpath.native is not a function. Is fs being monkey-patched?',
+    'Warning', 'fs-extra-WARN0003'
+  )
+}

backend/node_modules/fs-extra/lib/index.js

@@ -0,0 +1,16 @@
+'use strict'
+
+module.exports = {
+  // Export promiseified graceful-fs:
+  ...require('./fs'),
+  // Export extra methods:
+  ...require('./copy'),
+  ...require('./empty'),
+  ...require('./ensure'),
+  ...require('./json'),
+  ...require('./mkdirs'),
+  ...require('./move'),
+  ...require('./output-file'),
+  ...require('./path-exists'),
+  ...require('./remove')
+}

backend/node_modules/fs-extra/lib/json/index.js

@@ -0,0 +1,16 @@
+'use strict'
+
+const u = require('universalify').fromPromise
+const jsonFile = require('./jsonfile')
+
+jsonFile.outputJson = u(require('./output-json'))
+jsonFile.outputJsonSync = require('./output-json-sync')
+// aliases
+jsonFile.outputJSON = jsonFile.outputJson
+jsonFile.outputJSONSync = jsonFile.outputJsonSync
+jsonFile.writeJSON = jsonFile.writeJson
+jsonFile.writeJSONSync = jsonFile.writeJsonSync
+jsonFile.readJSON = jsonFile.readJson
+jsonFile.readJSONSync = jsonFile.readJsonSync
+
+module.exports = jsonFile

backend/node_modules/fs-extra/lib/json/jsonfile.js

@@ -0,0 +1,11 @@
+'use strict'
+
+const jsonFile = require('jsonfile')
+
+module.exports = {
+  // jsonfile exports
+  readJson: jsonFile.readFile,
+  readJsonSync: jsonFile.readFileSync,
+  writeJson: jsonFile.writeFile,
+  writeJsonSync: jsonFile.writeFileSync
+}

backend/node_modules/fs-extra/lib/json/output-json-sync.js

@@ -0,0 +1,12 @@
+'use strict'
+
+const { stringify } = require('jsonfile/utils')
+const { outputFileSync } = require('../output-file')
+
+function outputJsonSync (file, data, options) {
+  const str = stringify(data, options)
+
+  outputFileSync(file, str, options)
+}
+
+module.exports = outputJsonSync

backend/node_modules/fs-extra/lib/json/output-json.js

@@ -0,0 +1,12 @@
+'use strict'
+
+const { stringify } = require('jsonfile/utils')
+const { outputFile } = require('../output-file')
+
+async function outputJson (file, data, options = {}) {
+  const str = stringify(data, options)
+
+  await outputFile(file, str, options)
+}
+
+module.exports = outputJson

backend/node_modules/fs-extra/lib/mkdirs/index.js

@@ -0,0 +1,14 @@
+'use strict'
+const u = require('universalify').fromPromise
+const { makeDir: _makeDir, makeDirSync } = require('./make-dir')
+const makeDir = u(_makeDir)
+
+module.exports = {
+  mkdirs: makeDir,
+  mkdirsSync: makeDirSync,
+  // alias
+  mkdirp: makeDir,
+  mkdirpSync: makeDirSync,
+  ensureDir: makeDir,
+  ensureDirSync: makeDirSync
+}

backend/node_modules/fs-extra/lib/mkdirs/make-dir.js

@@ -0,0 +1,27 @@
+'use strict'
+const fs = require('../fs')
+const { checkPath } = require('./utils')
+
+const getMode = options => {
+  const defaults = { mode: 0o777 }
+  if (typeof options === 'number') return options
+  return ({ ...defaults, ...options }).mode
+}
+
+module.exports.makeDir = async (dir, options) => {
+  checkPath(dir)
+
+  return fs.mkdir(dir, {
+    mode: getMode(options),
+    recursive: true
+  })
+}
+
+module.exports.makeDirSync = (dir, options) => {
+  checkPath(dir)
+
+  return fs.mkdirSync(dir, {
+    mode: getMode(options),
+    recursive: true
+  })
+}

backend/node_modules/fs-extra/lib/mkdirs/utils.js

@@ -0,0 +1,21 @@
+// Adapted from https://github.com/sindresorhus/make-dir
+// Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+'use strict'
+const path = require('path')
+
+// https://github.com/nodejs/node/issues/8987
+// https://github.com/libuv/libuv/pull/1088
+module.exports.checkPath = function checkPath (pth) {
+  if (process.platform === 'win32') {
+    const pathHasInvalidWinCharacters = /[<>:"|?*]/.test(pth.replace(path.parse(pth).root, ''))
+
+    if (pathHasInvalidWinCharacters) {
+      const error = new Error(`Path contains invalid characters: ${pth}`)
+      error.code = 'EINVAL'
+      throw error
+    }
+  }
+}

backend/node_modules/fs-extra/lib/move/index.js

@@ -0,0 +1,7 @@
+'use strict'
+
+const u = require('universalify').fromPromise
+module.exports = {
+  move: u(require('./move')),
+  moveSync: require('./move-sync')
+}

backend/node_modules/fs-extra/lib/move/move-sync.js

@@ -0,0 +1,55 @@
+'use strict'
+
+const fs = require('graceful-fs')
+const path = require('path')
+const copySync = require('../copy').copySync
+const removeSync = require('../remove').removeSync
+const mkdirpSync = require('../mkdirs').mkdirpSync
+const stat = require('../util/stat')
+
+function moveSync (src, dest, opts) {
+  opts = opts || {}
+  const overwrite = opts.overwrite || opts.clobber || false
+
+  const { srcStat, isChangingCase = false } = stat.checkPathsSync(src, dest, 'move', opts)
+  stat.checkParentPathsSync(src, srcStat, dest, 'move')
+  if (!isParentRoot(dest)) mkdirpSync(path.dirname(dest))
+  return doRename(src, dest, overwrite, isChangingCase)
+}
+
+function isParentRoot (dest) {
+  const parent = path.dirname(dest)
+  const parsedPath = path.parse(parent)
+  return parsedPath.root === parent
+}
+
+function doRename (src, dest, overwrite, isChangingCase) {
+  if (isChangingCase) return rename(src, dest, overwrite)
+  if (overwrite) {
+    removeSync(dest)
+    return rename(src, dest, overwrite)
+  }
+  if (fs.existsSync(dest)) throw new Error('dest already exists.')
+  return rename(src, dest, overwrite)
+}
+
+function rename (src, dest, overwrite) {
+  try {
+    fs.renameSync(src, dest)
+  } catch (err) {
+    if (err.code !== 'EXDEV') throw err
+    return moveAcrossDevice(src, dest, overwrite)
+  }
+}
+
+function moveAcrossDevice (src, dest, overwrite) {
+  const opts = {
+    overwrite,
+    errorOnExist: true,
+    preserveTimestamps: true
+  }
+  copySync(src, dest, opts)
+  return removeSync(src)
+}
+
+module.exports = moveSync

backend/node_modules/fs-extra/lib/move/move.js

@@ -0,0 +1,59 @@
+'use strict'
+
+const fs = require('../fs')
+const path = require('path')
+const { copy } = require('../copy')
+const { remove } = require('../remove')
+const { mkdirp } = require('../mkdirs')
+const { pathExists } = require('../path-exists')
+const stat = require('../util/stat')
+
+async function move (src, dest, opts = {}) {
+  const overwrite = opts.overwrite || opts.clobber || false
+
+  const { srcStat, isChangingCase = false } = await stat.checkPaths(src, dest, 'move', opts)
+
+  await stat.checkParentPaths(src, srcStat, dest, 'move')
+
+  // If the parent of dest is not root, make sure it exists before proceeding
+  const destParent = path.dirname(dest)
+  const parsedParentPath = path.parse(destParent)
+  if (parsedParentPath.root !== destParent) {
+    await mkdirp(destParent)
+  }
+
+  return doRename(src, dest, overwrite, isChangingCase)
+}
+
+async function doRename (src, dest, overwrite, isChangingCase) {
+  if (!isChangingCase) {
+    if (overwrite) {
+      await remove(dest)
+    } else if (await pathExists(dest)) {
+      throw new Error('dest already exists.')
+    }
+  }
+
+  try {
+    // Try w/ rename first, and try copy + remove if EXDEV
+    await fs.rename(src, dest)
+  } catch (err) {
+    if (err.code !== 'EXDEV') {
+      throw err
+    }
+    await moveAcrossDevice(src, dest, overwrite)
+  }
+}
+
+async function moveAcrossDevice (src, dest, overwrite) {
+  const opts = {
+    overwrite,
+    errorOnExist: true,
+    preserveTimestamps: true
+  }
+
+  await copy(src, dest, opts)
+  return remove(src)
+}
+
+module.exports = move

backend/node_modules/fs-extra/lib/output-file/index.js

@@ -0,0 +1,31 @@
+'use strict'
+
+const u = require('universalify').fromPromise
+const fs = require('../fs')
+const path = require('path')
+const mkdir = require('../mkdirs')
+const pathExists = require('../path-exists').pathExists
+
+async function outputFile (file, data, encoding = 'utf-8') {
+  const dir = path.dirname(file)
+
+  if (!(await pathExists(dir))) {
+    await mkdir.mkdirs(dir)
+  }
+
+  return fs.writeFile(file, data, encoding)
+}
+
+function outputFileSync (file, ...args) {
+  const dir = path.dirname(file)
+  if (!fs.existsSync(dir)) {
+    mkdir.mkdirsSync(dir)
+  }
+
+  fs.writeFileSync(file, ...args)
+}
+
+module.exports = {
+  outputFile: u(outputFile),
+  outputFileSync
+}

backend/node_modules/fs-extra/lib/path-exists/index.js

@@ -0,0 +1,12 @@
+'use strict'
+const u = require('universalify').fromPromise
+const fs = require('../fs')
+
+function pathExists (path) {
+  return fs.access(path).then(() => true).catch(() => false)
+}
+
+module.exports = {
+  pathExists: u(pathExists),
+  pathExistsSync: fs.existsSync
+}

backend/node_modules/fs-extra/lib/remove/index.js

@@ -0,0 +1,17 @@
+'use strict'
+
+const fs = require('graceful-fs')
+const u = require('universalify').fromCallback
+
+function remove (path, callback) {
+  fs.rm(path, { recursive: true, force: true }, callback)
+}
+
+function removeSync (path) {
+  fs.rmSync(path, { recursive: true, force: true })
+}
+
+module.exports = {
+  remove: u(remove),
+  removeSync
+}

backend/node_modules/fs-extra/lib/util/stat.js

@@ -0,0 +1,158 @@
+'use strict'
+
+const fs = require('../fs')
+const path = require('path')
+const u = require('universalify').fromPromise
+
+function getStats (src, dest, opts) {
+  const statFunc = opts.dereference
+    ? (file) => fs.stat(file, { bigint: true })
+    : (file) => fs.lstat(file, { bigint: true })
+  return Promise.all([
+    statFunc(src),
+    statFunc(dest).catch(err => {
+      if (err.code === 'ENOENT') return null
+      throw err
+    })
+  ]).then(([srcStat, destStat]) => ({ srcStat, destStat }))
+}
+
+function getStatsSync (src, dest, opts) {
+  let destStat
+  const statFunc = opts.dereference
+    ? (file) => fs.statSync(file, { bigint: true })
+    : (file) => fs.lstatSync(file, { bigint: true })
+  const srcStat = statFunc(src)
+  try {
+    destStat = statFunc(dest)
+  } catch (err) {
+    if (err.code === 'ENOENT') return { srcStat, destStat: null }
+    throw err
+  }
+  return { srcStat, destStat }
+}
+
+async function checkPaths (src, dest, funcName, opts) {
+  const { srcStat, destStat } = await getStats(src, dest, opts)
+  if (destStat) {
+    if (areIdentical(srcStat, destStat)) {
+      const srcBaseName = path.basename(src)
+      const destBaseName = path.basename(dest)
+      if (funcName === 'move' &&
+        srcBaseName !== destBaseName &&
+        srcBaseName.toLowerCase() === destBaseName.toLowerCase()) {
+        return { srcStat, destStat, isChangingCase: true }
+      }
+      throw new Error('Source and destination must not be the same.')
+    }
+    if (srcStat.isDirectory() && !destStat.isDirectory()) {
+      throw new Error(`Cannot overwrite non-directory '${dest}' with directory '${src}'.`)
+    }
+    if (!srcStat.isDirectory() && destStat.isDirectory()) {
+      throw new Error(`Cannot overwrite directory '${dest}' with non-directory '${src}'.`)
+    }
+  }
+
+  if (srcStat.isDirectory() && isSrcSubdir(src, dest)) {
+    throw new Error(errMsg(src, dest, funcName))
+  }
+
+  return { srcStat, destStat }
+}
+
+function checkPathsSync (src, dest, funcName, opts) {
+  const { srcStat, destStat } = getStatsSync(src, dest, opts)
+
+  if (destStat) {
+    if (areIdentical(srcStat, destStat)) {
+      const srcBaseName = path.basename(src)
+      const destBaseName = path.basename(dest)
+      if (funcName === 'move' &&
+        srcBaseName !== destBaseName &&
+        srcBaseName.toLowerCase() === destBaseName.toLowerCase()) {
+        return { srcStat, destStat, isChangingCase: true }
+      }
+      throw new Error('Source and destination must not be the same.')
+    }
+    if (srcStat.isDirectory() && !destStat.isDirectory()) {
+      throw new Error(`Cannot overwrite non-directory '${dest}' with directory '${src}'.`)
+    }
+    if (!srcStat.isDirectory() && destStat.isDirectory()) {
+      throw new Error(`Cannot overwrite directory '${dest}' with non-directory '${src}'.`)
+    }
+  }
+
+  if (srcStat.isDirectory() && isSrcSubdir(src, dest)) {
+    throw new Error(errMsg(src, dest, funcName))
+  }
+  return { srcStat, destStat }
+}
+
+// recursively check if dest parent is a subdirectory of src.
+// It works for all file types including symlinks since it
+// checks the src and dest inodes. It starts from the deepest
+// parent and stops once it reaches the src parent or the root path.
+async function checkParentPaths (src, srcStat, dest, funcName) {
+  const srcParent = path.resolve(path.dirname(src))
+  const destParent = path.resolve(path.dirname(dest))
+  if (destParent === srcParent || destParent === path.parse(destParent).root) return
+
+  let destStat
+  try {
+    destStat = await fs.stat(destParent, { bigint: true })
+  } catch (err) {
+    if (err.code === 'ENOENT') return
+    throw err
+  }
+
+  if (areIdentical(srcStat, destStat)) {
+    throw new Error(errMsg(src, dest, funcName))
+  }
+
+  return checkParentPaths(src, srcStat, destParent, funcName)
+}
+
+function checkParentPathsSync (src, srcStat, dest, funcName) {
+  const srcParent = path.resolve(path.dirname(src))
+  const destParent = path.resolve(path.dirname(dest))
+  if (destParent === srcParent || destParent === path.parse(destParent).root) return
+  let destStat
+  try {
+    destStat = fs.statSync(destParent, { bigint: true })
+  } catch (err) {
+    if (err.code === 'ENOENT') return
+    throw err
+  }
+  if (areIdentical(srcStat, destStat)) {
+    throw new Error(errMsg(src, dest, funcName))
+  }
+  return checkParentPathsSync(src, srcStat, destParent, funcName)
+}
+
+function areIdentical (srcStat, destStat) {
+  return destStat.ino && destStat.dev && destStat.ino === srcStat.ino && destStat.dev === srcStat.dev
+}
+
+// return true if dest is a subdir of src, otherwise false.
+// It only checks the path strings.
+function isSrcSubdir (src, dest) {
+  const srcArr = path.resolve(src).split(path.sep).filter(i => i)
+  const destArr = path.resolve(dest).split(path.sep).filter(i => i)
+  return srcArr.every((cur, i) => destArr[i] === cur)
+}
+
+function errMsg (src, dest, funcName) {
+  return `Cannot ${funcName} '${src}' to a subdirectory of itself, '${dest}'.`
+}
+
+module.exports = {
+  // checkPaths
+  checkPaths: u(checkPaths),
+  checkPathsSync,
+  // checkParent
+  checkParentPaths: u(checkParentPaths),
+  checkParentPathsSync,
+  // Misc
+  isSrcSubdir,
+  areIdentical
+}

backend/node_modules/fs-extra/lib/util/utimes.js

@@ -0,0 +1,36 @@
+'use strict'
+
+const fs = require('../fs')
+const u = require('universalify').fromPromise
+
+async function utimesMillis (path, atime, mtime) {
+  // if (!HAS_MILLIS_RES) return fs.utimes(path, atime, mtime, callback)
+  const fd = await fs.open(path, 'r+')
+
+  let closeErr = null
+
+  try {
+    await fs.futimes(fd, atime, mtime)
+  } finally {
+    try {
+      await fs.close(fd)
+    } catch (e) {
+      closeErr = e
+    }
+  }
+
+  if (closeErr) {
+    throw closeErr
+  }
+}
+
+function utimesMillisSync (path, atime, mtime) {
+  const fd = fs.openSync(path, 'r+')
+  fs.futimesSync(fd, atime, mtime)
+  return fs.closeSync(fd)
+}
+
+module.exports = {
+  utimesMillis: u(utimesMillis),
+  utimesMillisSync
+}

backend/node_modules/fs-extra/package.json

@@ -0,0 +1,71 @@
+{
+  "name": "fs-extra",
+  "version": "11.3.0",
+  "description": "fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as recursive mkdir, copy, and remove.",
+  "engines": {
+    "node": ">=14.14"
+  },
+  "homepage": "https://github.com/jprichardson/node-fs-extra",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/jprichardson/node-fs-extra"
+  },
+  "keywords": [
+    "fs",
+    "file",
+    "file system",
+    "copy",
+    "directory",
+    "extra",
+    "mkdirp",
+    "mkdir",
+    "mkdirs",
+    "recursive",
+    "json",
+    "read",
+    "write",
+    "extra",
+    "delete",
+    "remove",
+    "touch",
+    "create",
+    "text",
+    "output",
+    "move",
+    "promise"
+  ],
+  "author": "JP Richardson <jprichardson@gmail.com>",
+  "license": "MIT",
+  "dependencies": {
+    "graceful-fs": "^4.2.0",
+    "jsonfile": "^6.0.1",
+    "universalify": "^2.0.0"
+  },
+  "devDependencies": {
+    "klaw": "^2.1.1",
+    "klaw-sync": "^3.0.2",
+    "minimist": "^1.1.1",
+    "mocha": "^10.1.0",
+    "nyc": "^15.0.0",
+    "proxyquire": "^2.0.1",
+    "read-dir-files": "^0.1.1",
+    "standard": "^17.0.0"
+  },
+  "main": "./lib/index.js",
+  "exports": {
+    ".": "./lib/index.js",
+    "./esm": "./lib/esm.mjs"
+  },
+  "files": [
+    "lib/",
+    "!lib/**/__tests__/"
+  ],
+  "scripts": {
+    "lint": "standard",
+    "test-find": "find ./lib/**/__tests__ -name *.test.js | xargs mocha",
+    "test": "npm run lint && npm run unit && npm run unit-esm",
+    "unit": "nyc node test.js",
+    "unit-esm": "node test.mjs"
+  },
+  "sideEffects": false
+}