Set up comprehensive frontend testing infrastructure

- Install Jest for unit testing with React Testing Library
- Install Playwright for end-to-end testing
- Configure Jest with proper TypeScript support and module mapping
- Create test setup files and utilities for both unit and e2e tests

Components:
* Jest configuration with coverage thresholds
* Playwright configuration with browser automation
* Unit tests for LoginForm, AuthContext, and useSocketIO hook
* E2E tests for authentication, dashboard, and agents workflows
* GitHub Actions workflow for automated testing
* Mock data and API utilities for consistent testing
* Test documentation with best practices

Testing features:
- Unit tests with 70% coverage threshold
- E2E tests with API mocking and user journey testing
- CI/CD integration for automated test runs
- Cross-browser testing support with Playwright
- Authentication system testing end-to-end

🚀 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/node_modules/jest-diff/LICENSE

@@ -0,0 +1,22 @@
+MIT License
+
+Copyright (c) Meta Platforms, Inc. and affiliates.
+Copyright Contributors to the Jest project.
+
+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.

frontend/node_modules/jest-diff/README.md

@@ -0,0 +1,671 @@
+# jest-diff
+
+Display differences clearly so people can review changes confidently.
+
+The `diff` named export serializes JavaScript **values**, compares them line-by-line, and returns a string which includes comparison lines.
+
+Two named exports compare **strings** character-by-character:
+
+- `diffStringsUnified` returns a string.
+- `diffStringsRaw` returns an array of `Diff` objects.
+
+Three named exports compare **arrays of strings** line-by-line:
+
+- `diffLinesUnified` and `diffLinesUnified2` return a string.
+- `diffLinesRaw` returns an array of `Diff` objects.
+
+## Installation
+
+To add this package as a dependency of a project, run either of the following commands:
+
+- `npm install jest-diff`
+- `yarn add jest-diff`
+
+## Usage of `diff()`
+
+Given JavaScript **values**, `diff(a, b, options?)` does the following:
+
+1. **serialize** the values as strings using the `pretty-format` package
+2. **compare** the strings line-by-line using the `diff-sequences` package
+3. **format** the changed or common lines using the `chalk` package
+
+To use this function, write either of the following:
+
+- `const {diff} = require('jest-diff');` in CommonJS modules
+- `import {diff} from 'jest-diff';` in ECMAScript modules
+
+### Example of `diff()`
+
+```js
+const a = ['delete', 'common', 'changed from'];
+const b = ['common', 'changed to', 'insert'];
+
+const difference = diff(a, b);
+```
+
+The returned **string** consists of:
+
+- annotation lines: describe the two change indicators with labels, and a blank line
+- comparison lines: similar to “unified” view on GitHub, but `Expected` lines are green, `Received` lines are red, and common lines are dim (by default, see Options)
+
+```diff
+- Expected
++ Received
+
+  Array [
+-   "delete",
+    "common",
+-   "changed from",
++   "changed to",
++   "insert",
+  ]
+```
+
+### Edge cases of `diff()`
+
+Here are edge cases for the return value:
+
+- `' Comparing two different types of values. …'` if the arguments have **different types** according to the `jest-get-type` package (instances of different classes have the same `'object'` type)
+- `'Compared values have no visual difference.'` if the arguments have either **referential identity** according to `Object.is` method or **same serialization** according to the `pretty-format` package
+- `null` if either argument is a so-called **asymmetric matcher** in Jasmine or Jest
+
+## Usage of diffStringsUnified
+
+Given **strings**, `diffStringsUnified(a, b, options?)` does the following:
+
+1. **compare** the strings character-by-character using the `diff-sequences` package
+2. **clean up** small (often coincidental) common substrings, also known as chaff
+3. **format** the changed or common lines using the `chalk` package
+
+Although the function is mainly for **multiline** strings, it compares any strings.
+
+Write either of the following:
+
+- `const {diffStringsUnified} = require('jest-diff');` in CommonJS modules
+- `import {diffStringsUnified} from 'jest-diff';` in ECMAScript modules
+
+### Example of diffStringsUnified
+
+```js
+const a = 'common\nchanged from';
+const b = 'common\nchanged to';
+
+const difference = diffStringsUnified(a, b);
+```
+
+The returned **string** consists of:
+
+- annotation lines: describe the two change indicators with labels, and a blank line
+- comparison lines: similar to “unified” view on GitHub, and **changed substrings** have **inverse** foreground and background colors (that is, `from` has white-on-green and `to` has white-on-red, which the following example does not show)
+
+```diff
+- Expected
++ Received
+
+  common
+- changed from
++ changed to
+```
+
+### Performance of diffStringsUnified
+
+To get the benefit of **changed substrings** within the comparison lines, a character-by-character comparison has a higher computational cost (in time and space) than a line-by-line comparison.
+
+If the input strings can have **arbitrary length**, we recommend that the calling code set a limit, beyond which splits the strings, and then calls `diffLinesUnified` instead. For example, Jest falls back to line-by-line comparison if either string has length greater than 20K characters.
+
+## Usage of diffLinesUnified
+
+Given **arrays of strings**, `diffLinesUnified(aLines, bLines, options?)` does the following:
+
+1. **compare** the arrays line-by-line using the `diff-sequences` package
+2. **format** the changed or common lines using the `chalk` package
+
+You might call this function when strings have been split into lines and you do not need to see changed substrings within lines.
+
+### Example of diffLinesUnified
+
+```js
+const aLines = ['delete', 'common', 'changed from'];
+const bLines = ['common', 'changed to', 'insert'];
+
+const difference = diffLinesUnified(aLines, bLines);
+```
+
+```diff
+- Expected
++ Received
+
+- delete
+  common
+- changed from
++ changed to
++ insert
+```
+
+### Edge cases of diffLinesUnified or diffStringsUnified
+
+Here are edge cases for arguments and return values:
+
+- both `a` and `b` are empty strings: no comparison lines
+- only `a` is empty string: all comparison lines have `bColor` and `bIndicator` (see Options)
+- only `b` is empty string: all comparison lines have `aColor` and `aIndicator` (see Options)
+- `a` and `b` are equal non-empty strings: all comparison lines have `commonColor` and `commonIndicator` (see Options)
+
+## Usage of diffLinesUnified2
+
+Given two **pairs** of arrays of strings, `diffLinesUnified2(aLinesDisplay, bLinesDisplay, aLinesCompare, bLinesCompare, options?)` does the following:
+
+1. **compare** the pair of `Compare` arrays line-by-line using the `diff-sequences` package
+2. **format** the corresponding lines in the pair of `Display` arrays using the `chalk` package
+
+Jest calls this function to consider lines as common instead of changed if the only difference is indentation.
+
+You might call this function for case insensitive or Unicode equivalence comparison of lines.
+
+### Example of diffLinesUnified2
+
+```js
+import {format} from 'pretty-format';
+
+const a = {
+  text: 'Ignore indentation in serialized object',
+  time: '2019-09-19T12:34:56.000Z',
+  type: 'CREATE_ITEM',
+};
+const b = {
+  payload: {
+    text: 'Ignore indentation in serialized object',
+    time: '2019-09-19T12:34:56.000Z',
+  },
+  type: 'CREATE_ITEM',
+};
+
+const difference = diffLinesUnified2(
+  // serialize with indentation to display lines
+  format(a).split('\n'),
+  format(b).split('\n'),
+  // serialize without indentation to compare lines
+  format(a, {indent: 0}).split('\n'),
+  format(b, {indent: 0}).split('\n'),
+);
+```
+
+The `text` and `time` properties are common, because their only difference is indentation:
+
+```diff
+- Expected
++ Received
+
+  Object {
++   payload: Object {
+      text: 'Ignore indentation in serialized object',
+      time: '2019-09-19T12:34:56.000Z',
++   },
+    type: 'CREATE_ITEM',
+  }
+```
+
+The preceding example illustrates why (at least for indentation) it seems more intuitive that the function returns the common line from the `bLinesDisplay` array instead of from the `aLinesDisplay` array.
+
+## Usage of diffStringsRaw
+
+Given **strings** and a boolean option, `diffStringsRaw(a, b, cleanup)` does the following:
+
+1. **compare** the strings character-by-character using the `diff-sequences` package
+2. optionally **clean up** small (often coincidental) common substrings, also known as chaff
+
+Because `diffStringsRaw` returns the difference as **data** instead of a string, you can format it as your application requires (for example, enclosed in HTML markup for browser instead of escape sequences for console).
+
+The returned **array** describes substrings as instances of the `Diff` class, which calling code can access like array tuples:
+
+The value at index `0` is one of the following:
+
+| value | named export  | description           |
+| ----: | :------------ | :-------------------- |
+|   `0` | `DIFF_EQUAL`  | in `a` and in `b`     |
+|  `-1` | `DIFF_DELETE` | in `a` but not in `b` |
+|   `1` | `DIFF_INSERT` | in `b` but not in `a` |
+
+The value at index `1` is a substring of `a` or `b` or both.
+
+### Example of diffStringsRaw with cleanup
+
+```js
+const diffs = diffStringsRaw('changed from', 'changed to', true);
+```
+
+| `i` | `diffs[i][0]` | `diffs[i][1]` |
+| --: | ------------: | :------------ |
+| `0` |           `0` | `'changed '`  |
+| `1` |          `-1` | `'from'`      |
+| `2` |           `1` | `'to'`        |
+
+### Example of diffStringsRaw without cleanup
+
+```js
+const diffs = diffStringsRaw('changed from', 'changed to', false);
+```
+
+| `i` | `diffs[i][0]` | `diffs[i][1]` |
+| --: | ------------: | :------------ |
+| `0` |           `0` | `'changed '`  |
+| `1` |          `-1` | `'fr'`        |
+| `2` |           `1` | `'t'`         |
+| `3` |           `0` | `'o'`         |
+| `4` |          `-1` | `'m'`         |
+
+### Advanced import for diffStringsRaw
+
+Here are all the named imports that you might need for the `diffStringsRaw` function:
+
+- `const {DIFF_DELETE, DIFF_EQUAL, DIFF_INSERT, Diff, diffStringsRaw} = require('jest-diff');` in CommonJS modules
+- `import {DIFF_DELETE, DIFF_EQUAL, DIFF_INSERT, Diff, diffStringsRaw} from 'jest-diff';` in ECMAScript modules
+
+To write a **formatting** function, you might need the named constants (and `Diff` in TypeScript annotations).
+
+If you write an application-specific **cleanup** algorithm, then you might need to call the `Diff` constructor:
+
+```js
+const diffCommon = new Diff(DIFF_EQUAL, 'changed ');
+const diffDelete = new Diff(DIFF_DELETE, 'from');
+const diffInsert = new Diff(DIFF_INSERT, 'to');
+```
+
+## Usage of diffLinesRaw
+
+Given **arrays of strings**, `diffLinesRaw(aLines, bLines)` does the following:
+
+- **compare** the arrays line-by-line using the `diff-sequences` package
+
+Because `diffLinesRaw` returns the difference as **data** instead of a string, you can format it as your application requires.
+
+### Example of diffLinesRaw
+
+```js
+const aLines = ['delete', 'common', 'changed from'];
+const bLines = ['common', 'changed to', 'insert'];
+
+const diffs = diffLinesRaw(aLines, bLines);
+```
+
+| `i` | `diffs[i][0]` | `diffs[i][1]`    |
+| --: | ------------: | :--------------- |
+| `0` |          `-1` | `'delete'`       |
+| `1` |           `0` | `'common'`       |
+| `2` |          `-1` | `'changed from'` |
+| `3` |           `1` | `'changed to'`   |
+| `4` |           `1` | `'insert'`       |
+
+### Edge case of diffLinesRaw
+
+If you call `string.split('\n')` for an empty string:
+
+- the result is `['']` an array which contains an empty string
+- instead of `[]` an empty array
+
+Depending of your application, you might call `diffLinesRaw` with either array.
+
+### Example of split method
+
+```js
+import {diffLinesRaw} from 'jest-diff';
+
+const a = 'non-empty string';
+const b = '';
+
+const diffs = diffLinesRaw(a.split('\n'), b.split('\n'));
+```
+
+| `i` | `diffs[i][0]` | `diffs[i][1]`        |
+| --: | ------------: | :------------------- |
+| `0` |          `-1` | `'non-empty string'` |
+| `1` |           `1` | `''`                 |
+
+Which you might format as follows:
+
+```diff
+- Expected  - 1
++ Received  + 1
+
+- non-empty string
++
+```
+
+### Example of splitLines0 function
+
+For edge case behavior like the `diffLinesUnified` function, you might define a `splitLines0` function, which given an empty string, returns `[]` an empty array:
+
+```js
+export const splitLines0 = string =>
+  string.length === 0 ? [] : string.split('\n');
+```
+
+```js
+import {diffLinesRaw} from 'jest-diff';
+
+const a = '';
+const b = 'line 1\nline 2\nline 3';
+
+const diffs = diffLinesRaw(a.split('\n'), b.split('\n'));
+```
+
+| `i` | `diffs[i][0]` | `diffs[i][1]` |
+| --: | ------------: | :------------ |
+| `0` |           `1` | `'line 1'`    |
+| `1` |           `1` | `'line 2'`    |
+| `2` |           `1` | `'line 3'`    |
+
+Which you might format as follows:
+
+```diff
+- Expected  - 0
++ Received  + 3
+
++ line 1
++ line 2
++ line 3
+```
+
+In contrast to the `diffLinesRaw` function, the `diffLinesUnified` and `diffLinesUnified2` functions **automatically** convert array arguments computed by string `split` method, so callers do **not** need a `splitLine0` function.
+
+## Options
+
+The default options are for the report when an assertion fails from the `expect` package used by Jest.
+
+For other applications, you can provide an options object as a third argument:
+
+- `diff(a, b, options)`
+- `diffStringsUnified(a, b, options)`
+- `diffLinesUnified(aLines, bLines, options)`
+- `diffLinesUnified2(aLinesDisplay, bLinesDisplay, aLinesCompare, bLinesCompare, options)`
+
+### Properties of options object
+
+| name                              | default            |
+| :-------------------------------- | :----------------- |
+| `aAnnotation`                     | `'Expected'`       |
+| `aColor`                          | `chalk.green`      |
+| `aIndicator`                      | `'-'`              |
+| `bAnnotation`                     | `'Received'`       |
+| `bColor`                          | `chalk.red`        |
+| `bIndicator`                      | `'+'`              |
+| `changeColor`                     | `chalk.inverse`    |
+| `changeLineTrailingSpaceColor`    | `string => string` |
+| `commonColor`                     | `chalk.dim`        |
+| `commonIndicator`                 | `' '`              |
+| `commonLineTrailingSpaceColor`    | `string => string` |
+| `compareKeys`                     | `undefined`        |
+| `contextLines`                    | `5`                |
+| `emptyFirstOrLastLinePlaceholder` | `''`               |
+| `expand`                          | `true`             |
+| `includeChangeCounts`             | `false`            |
+| `omitAnnotationLines`             | `false`            |
+| `patchColor`                      | `chalk.yellow`     |
+
+For more information about the options, see the following examples.
+
+### Example of options for labels
+
+If the application is code modification, you might replace the labels:
+
+```js
+const options = {
+  aAnnotation: 'Original',
+  bAnnotation: 'Modified',
+};
+```
+
+```diff
+- Original
++ Modified
+
+  common
+- changed from
++ changed to
+```
+
+The `jest-diff` package does not assume that the 2 labels have equal length.
+
+### Example of options for colors of changed lines
+
+For consistency with most diff tools, you might exchange the colors:
+
+```ts
+import chalk from 'chalk';
+
+const options = {
+  aColor: chalk.red,
+  bColor: chalk.green,
+};
+```
+
+### Example of option for color of changed substrings
+
+Although the default inverse of foreground and background colors is hard to beat for changed substrings **within lines**, especially because it highlights spaces, if you want bold font weight on yellow background color:
+
+```ts
+import chalk from 'chalk';
+
+const options = {
+  changeColor: chalk.bold.bgYellowBright,
+};
+```
+
+### Example of option to format trailing spaces
+
+Because `diff()` does not display substring differences within lines, formatting can help you see when lines differ by the presence or absence of trailing spaces found by `/\s+$/` regular expression.
+
+- If change lines have a background color, then you can see trailing spaces.
+- If common lines have default dim color, then you cannot see trailing spaces. You might want yellowish background color to see them.
+
+```js
+const options = {
+  aColor: chalk.rgb(128, 0, 128).bgRgb(255, 215, 255), // magenta
+  bColor: chalk.rgb(0, 95, 0).bgRgb(215, 255, 215), // green
+  commonLineTrailingSpaceColor: chalk.bgYellow,
+};
+```
+
+The value of a Color option is a function, which given a string, returns a string.
+
+If you want to replace trailing spaces with middle dot characters:
+
+```js
+const replaceSpacesWithMiddleDot = string => '·'.repeat(string.length);
+
+const options = {
+  changeLineTrailingSpaceColor: replaceSpacesWithMiddleDot,
+  commonLineTrailingSpaceColor: replaceSpacesWithMiddleDot,
+};
+```
+
+If you need the TypeScript type of a Color option:
+
+```ts
+import {DiffOptionsColor} from 'jest-diff';
+```
+
+### Example of options for no colors
+
+To store the difference in a file without escape codes for colors, provide an identity function:
+
+```js
+const noColor = string => string;
+
+const options = {
+  aColor: noColor,
+  bColor: noColor,
+  changeColor: noColor,
+  commonColor: noColor,
+  patchColor: noColor,
+};
+```
+
+### Example of options for indicators
+
+For consistency with the `diff` command, you might replace the indicators:
+
+```js
+const options = {
+  aIndicator: '<',
+  bIndicator: '>',
+};
+```
+
+The `jest-diff` package assumes (but does not enforce) that the 3 indicators have equal length.
+
+### Example of options to limit common lines
+
+By default, the output includes all common lines.
+
+To emphasize the changes, you might limit the number of common “context” lines:
+
+```js
+const options = {
+  contextLines: 1,
+  expand: false,
+};
+```
+
+A patch mark like `@@ -12,7 +12,9 @@` accounts for omitted common lines.
+
+### Example of option for color of patch marks
+
+If you want patch marks to have the same dim color as common lines:
+
+```ts
+import chalk from 'chalk';
+
+const options = {
+  expand: false,
+  patchColor: chalk.dim,
+};
+```
+
+### Example of option to include change counts
+
+To display the number of changed lines at the right of annotation lines:
+
+```js
+const a = ['common', 'changed from'];
+const b = ['common', 'changed to', 'insert'];
+
+const options = {
+  includeChangeCounts: true,
+};
+
+const difference = diff(a, b, options);
+```
+
+```diff
+- Expected  - 1
++ Received  + 2
+
+  Array [
+    "common",
+-   "changed from",
++   "changed to",
++   "insert",
+  ]
+```
+
+### Example of option to omit annotation lines
+
+To display only the comparison lines:
+
+```js
+const a = 'common\nchanged from';
+const b = 'common\nchanged to';
+
+const options = {
+  omitAnnotationLines: true,
+};
+
+const difference = diffStringsUnified(a, b, options);
+```
+
+```diff
+  common
+- changed from
++ changed to
+```
+
+### Example of option for empty first or last lines
+
+If the **first** or **last** comparison line is **empty**, because the content is empty and the indicator is a space, you might not notice it.
+
+The replacement option is a string whose default value is `''` empty string.
+
+Because Jest trims the report when a matcher fails, it deletes an empty last line.
+
+Therefore, Jest uses as placeholder the downwards arrow with corner leftwards:
+
+```js
+const options = {
+  emptyFirstOrLastLinePlaceholder: '↵', // U+21B5
+};
+```
+
+If a content line is empty, then the corresponding comparison line is automatically trimmed to remove the margin space (represented as a middle dot below) for the default indicators:
+
+|         Indicator | untrimmed | trimmed |
+| ----------------: | :-------- | :------ |
+|      `aIndicator` | `'-·'`    | `'-'`   |
+|      `bIndicator` | `'+·'`    | `'+'`   |
+| `commonIndicator` | `' ·'`    | `''`    |
+
+### Example of option for sorting object keys
+
+When two objects are compared their keys are printed in alphabetical order by default. If this was not the original order of the keys the diff becomes harder to read as the keys are not in their original position.
+
+Use `compareKeys` to pass a function which will be used when sorting the object keys.
+
+```js
+const a = {c: 'c', b: 'b1', a: 'a'};
+const b = {c: 'c', b: 'b2', a: 'a'};
+
+const options = {
+  // The keys will be in their original order
+  compareKeys: () => 0,
+};
+
+const difference = diff(a, b, options);
+```
+
+```diff
+- Expected
++ Received
+
+  Object {
+    "c": "c",
+-   "b": "b1",
++   "b": "b2",
+    "a": "a",
+  }
+```
+
+Depending on the implementation of `compareKeys` any sort order can be used.
+
+```js
+const a = {c: 'c', b: 'b1', a: 'a'};
+const b = {c: 'c', b: 'b2', a: 'a'};
+
+const options = {
+  // The keys will be in reverse order
+  compareKeys: (a, b) => (a > b ? -1 : 1),
+};
+
+const difference = diff(a, b, options);
+```
+
+```diff
+- Expected
++ Received
+
+  Object {
+    "a": "a",
+-   "b": "b1",
++   "b": "b2",
+    "c": "c",
+  }
+```

frontend/node_modules/jest-diff/build/index.d.mts

@@ -0,0 +1,96 @@
+import { CompareKeys } from "pretty-format";
+
+//#region src/cleanupSemantic.d.ts
+
+/**
+ * Diff Match and Patch
+ * Copyright 2018 The diff-match-patch Authors.
+ * https://github.com/google/diff-match-patch
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @fileoverview Computes the difference between two texts to create a patch.
+ * Applies the patch onto another text, allowing for errors.
+ * @author fraser@google.com (Neil Fraser)
+ */
+/**
+ * CHANGES by pedrottimark to diff_match_patch_uncompressed.ts file:
+ *
+ * 1. Delete anything not needed to use diff_cleanupSemantic method
+ * 2. Convert from prototype properties to var declarations
+ * 3. Convert Diff to class from constructor and prototype
+ * 4. Add type annotations for arguments and return values
+ * 5. Add exports
+ */
+/**
+ * The data structure representing a diff is an array of tuples:
+ * [[DIFF_DELETE, 'Hello'], [DIFF_INSERT, 'Goodbye'], [DIFF_EQUAL, ' world.']]
+ * which means: delete 'Hello', add 'Goodbye' and keep ' world.'
+ */
+declare var DIFF_DELETE: number;
+declare var DIFF_INSERT: number;
+declare var DIFF_EQUAL: number;
+/**
+ * Class representing one diff tuple.
+ * Attempts to look like a two-element array (which is what this used to be).
+ * @param {number} op Operation, one of: DIFF_DELETE, DIFF_INSERT, DIFF_EQUAL.
+ * @param {string} text Text to be deleted, inserted, or retained.
+ * @constructor
+ */
+declare class Diff {
+  0: number;
+  1: string;
+  constructor(op: number, text: string);
+}
+/**
+ * Reduce the number of edits by eliminating semantically trivial equalities.
+ * @param {!Array.<!diff_match_patch.Diff>} diffs Array of diff tuples.
+ */
+//#endregion
+//#region src/types.d.ts
+type DiffOptionsColor = (arg: string) => string;
+type DiffOptions = {
+  aAnnotation?: string;
+  aColor?: DiffOptionsColor;
+  aIndicator?: string;
+  bAnnotation?: string;
+  bColor?: DiffOptionsColor;
+  bIndicator?: string;
+  changeColor?: DiffOptionsColor;
+  changeLineTrailingSpaceColor?: DiffOptionsColor;
+  commonColor?: DiffOptionsColor;
+  commonIndicator?: string;
+  commonLineTrailingSpaceColor?: DiffOptionsColor;
+  contextLines?: number;
+  emptyFirstOrLastLinePlaceholder?: string;
+  expand?: boolean;
+  includeChangeCounts?: boolean;
+  omitAnnotationLines?: boolean;
+  patchColor?: DiffOptionsColor;
+  compareKeys?: CompareKeys;
+};
+//#endregion
+//#region src/diffLines.d.ts
+declare const diffLinesUnified: (aLines: Array<string>, bLines: Array<string>, options?: DiffOptions) => string;
+declare const diffLinesUnified2: (aLinesDisplay: Array<string>, bLinesDisplay: Array<string>, aLinesCompare: Array<string>, bLinesCompare: Array<string>, options?: DiffOptions) => string;
+declare const diffLinesRaw: (aLines: Array<string>, bLines: Array<string>) => Array<Diff>;
+//#endregion
+//#region src/printDiffs.d.ts
+declare const diffStringsUnified: (a: string, b: string, options?: DiffOptions) => string;
+declare const diffStringsRaw: (a: string, b: string, cleanup: boolean) => Array<Diff>;
+//#endregion
+//#region src/index.d.ts
+declare function diff(a: any, b: any, options?: DiffOptions): string | null;
+//#endregion
+export { DIFF_DELETE, DIFF_EQUAL, DIFF_INSERT, Diff, DiffOptions, DiffOptionsColor, diff, diffLinesRaw, diffLinesUnified, diffLinesUnified2, diffStringsRaw, diffStringsUnified };

frontend/node_modules/jest-diff/build/index.d.ts

@@ -0,0 +1,94 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {CompareKeys} from 'pretty-format';
+
+/**
+ * Class representing one diff tuple.
+ * Attempts to look like a two-element array (which is what this used to be).
+ * @param {number} op Operation, one of: DIFF_DELETE, DIFF_INSERT, DIFF_EQUAL.
+ * @param {string} text Text to be deleted, inserted, or retained.
+ * @constructor
+ */
+export declare class Diff {
+  0: number;
+  1: string;
+  constructor(op: number, text: string);
+}
+
+export declare function diff(
+  a: any,
+  b: any,
+  options?: DiffOptions,
+): string | null;
+
+/**
+ * The data structure representing a diff is an array of tuples:
+ * [[DIFF_DELETE, 'Hello'], [DIFF_INSERT, 'Goodbye'], [DIFF_EQUAL, ' world.']]
+ * which means: delete 'Hello', add 'Goodbye' and keep ' world.'
+ */
+export declare var DIFF_DELETE: number;
+
+export declare var DIFF_EQUAL: number;
+
+export declare var DIFF_INSERT: number;
+
+export declare const diffLinesRaw: (
+  aLines: Array<string>,
+  bLines: Array<string>,
+) => Array<Diff>;
+
+export declare const diffLinesUnified: (
+  aLines: Array<string>,
+  bLines: Array<string>,
+  options?: DiffOptions,
+) => string;
+
+export declare const diffLinesUnified2: (
+  aLinesDisplay: Array<string>,
+  bLinesDisplay: Array<string>,
+  aLinesCompare: Array<string>,
+  bLinesCompare: Array<string>,
+  options?: DiffOptions,
+) => string;
+
+export declare type DiffOptions = {
+  aAnnotation?: string;
+  aColor?: DiffOptionsColor;
+  aIndicator?: string;
+  bAnnotation?: string;
+  bColor?: DiffOptionsColor;
+  bIndicator?: string;
+  changeColor?: DiffOptionsColor;
+  changeLineTrailingSpaceColor?: DiffOptionsColor;
+  commonColor?: DiffOptionsColor;
+  commonIndicator?: string;
+  commonLineTrailingSpaceColor?: DiffOptionsColor;
+  contextLines?: number;
+  emptyFirstOrLastLinePlaceholder?: string;
+  expand?: boolean;
+  includeChangeCounts?: boolean;
+  omitAnnotationLines?: boolean;
+  patchColor?: DiffOptionsColor;
+  compareKeys?: CompareKeys;
+};
+
+export declare type DiffOptionsColor = (arg: string) => string;
+
+export declare const diffStringsRaw: (
+  a: string,
+  b: string,
+  cleanup: boolean,
+) => Array<Diff>;
+
+export declare const diffStringsUnified: (
+  a: string,
+  b: string,
+  options?: DiffOptions,
+) => string;
+
+export {};

frontend/node_modules/jest-diff/build/index.mjs

@@ -0,0 +1,12 @@
+import cjsModule from './index.js';
+
+export const DIFF_DELETE = cjsModule.DIFF_DELETE;
+export const DIFF_EQUAL = cjsModule.DIFF_EQUAL;
+export const DIFF_INSERT = cjsModule.DIFF_INSERT;
+export const Diff = cjsModule.Diff;
+export const diff = cjsModule.diff;
+export const diffLinesRaw = cjsModule.diffLinesRaw;
+export const diffLinesUnified = cjsModule.diffLinesUnified;
+export const diffLinesUnified2 = cjsModule.diffLinesUnified2;
+export const diffStringsRaw = cjsModule.diffStringsRaw;
+export const diffStringsUnified = cjsModule.diffStringsUnified;

frontend/node_modules/jest-diff/node_modules/ansi-styles/index.d.ts

@@ -0,0 +1,167 @@
+declare namespace ansiStyles {
+	interface CSPair {
+		/**
+		The ANSI terminal control sequence for starting this style.
+		*/
+		readonly open: string;
+
+		/**
+		The ANSI terminal control sequence for ending this style.
+		*/
+		readonly close: string;
+	}
+
+	interface ColorBase {
+		/**
+		The ANSI terminal control sequence for ending this color.
+		*/
+		readonly close: string;
+
+		ansi256(code: number): string;
+
+		ansi16m(red: number, green: number, blue: number): string;
+	}
+
+	interface Modifier {
+		/**
+		Resets the current color chain.
+		*/
+		readonly reset: CSPair;
+
+		/**
+		Make text bold.
+		*/
+		readonly bold: CSPair;
+
+		/**
+		Emitting only a small amount of light.
+		*/
+		readonly dim: CSPair;
+
+		/**
+		Make text italic. (Not widely supported)
+		*/
+		readonly italic: CSPair;
+
+		/**
+		Make text underline. (Not widely supported)
+		*/
+		readonly underline: CSPair;
+
+		/**
+		Make text overline.
+
+		Supported on VTE-based terminals, the GNOME terminal, mintty, and Git Bash.
+		*/
+		readonly overline: CSPair;
+
+		/**
+		Inverse background and foreground colors.
+		*/
+		readonly inverse: CSPair;
+
+		/**
+		Prints the text, but makes it invisible.
+		*/
+		readonly hidden: CSPair;
+
+		/**
+		Puts a horizontal line through the center of the text. (Not widely supported)
+		*/
+		readonly strikethrough: CSPair;
+	}
+
+	interface ForegroundColor {
+		readonly black: CSPair;
+		readonly red: CSPair;
+		readonly green: CSPair;
+		readonly yellow: CSPair;
+		readonly blue: CSPair;
+		readonly cyan: CSPair;
+		readonly magenta: CSPair;
+		readonly white: CSPair;
+
+		/**
+		Alias for `blackBright`.
+		*/
+		readonly gray: CSPair;
+
+		/**
+		Alias for `blackBright`.
+		*/
+		readonly grey: CSPair;
+
+		readonly blackBright: CSPair;
+		readonly redBright: CSPair;
+		readonly greenBright: CSPair;
+		readonly yellowBright: CSPair;
+		readonly blueBright: CSPair;
+		readonly cyanBright: CSPair;
+		readonly magentaBright: CSPair;
+		readonly whiteBright: CSPair;
+	}
+
+	interface BackgroundColor {
+		readonly bgBlack: CSPair;
+		readonly bgRed: CSPair;
+		readonly bgGreen: CSPair;
+		readonly bgYellow: CSPair;
+		readonly bgBlue: CSPair;
+		readonly bgCyan: CSPair;
+		readonly bgMagenta: CSPair;
+		readonly bgWhite: CSPair;
+
+		/**
+		Alias for `bgBlackBright`.
+		*/
+		readonly bgGray: CSPair;
+
+		/**
+		Alias for `bgBlackBright`.
+		*/
+		readonly bgGrey: CSPair;
+
+		readonly bgBlackBright: CSPair;
+		readonly bgRedBright: CSPair;
+		readonly bgGreenBright: CSPair;
+		readonly bgYellowBright: CSPair;
+		readonly bgBlueBright: CSPair;
+		readonly bgCyanBright: CSPair;
+		readonly bgMagentaBright: CSPair;
+		readonly bgWhiteBright: CSPair;
+	}
+
+	interface ConvertColor {
+		/**
+		Convert from the RGB color space to the ANSI 256 color space.
+
+		@param red - (`0...255`)
+		@param green - (`0...255`)
+		@param blue - (`0...255`)
+		*/
+		rgbToAnsi256(red: number, green: number, blue: number): number;
+
+		/**
+		Convert from the RGB HEX color space to the RGB color space.
+
+		@param hex - A hexadecimal string containing RGB data.
+		*/
+		hexToRgb(hex: string): [red: number, green: number, blue: number];
+
+		/**
+		Convert from the RGB HEX color space to the ANSI 256 color space.
+
+		@param hex - A hexadecimal string containing RGB data.
+		*/
+		hexToAnsi256(hex: string): number;
+	}
+}
+
+declare const ansiStyles: {
+	readonly modifier: ansiStyles.Modifier;
+	readonly color: ansiStyles.ForegroundColor & ansiStyles.ColorBase;
+	readonly bgColor: ansiStyles.BackgroundColor & ansiStyles.ColorBase;
+	readonly codes: ReadonlyMap<number, number>;
+} & ansiStyles.BackgroundColor & ansiStyles.ForegroundColor & ansiStyles.Modifier & ansiStyles.ConvertColor;
+
+export = ansiStyles;

frontend/node_modules/jest-diff/node_modules/ansi-styles/index.js

@@ -0,0 +1,164 @@
+'use strict';
+
+const ANSI_BACKGROUND_OFFSET = 10;
+
+const wrapAnsi256 = (offset = 0) => code => `\u001B[${38 + offset};5;${code}m`;
+
+const wrapAnsi16m = (offset = 0) => (red, green, blue) => `\u001B[${38 + offset};2;${red};${green};${blue}m`;
+
+function assembleStyles() {
+	const codes = new Map();
+	const styles = {
+		modifier: {
+			reset: [0, 0],
+			// 21 isn't widely supported and 22 does the same thing
+			bold: [1, 22],
+			dim: [2, 22],
+			italic: [3, 23],
+			underline: [4, 24],
+			overline: [53, 55],
+			inverse: [7, 27],
+			hidden: [8, 28],
+			strikethrough: [9, 29]
+		},
+		color: {
+			black: [30, 39],
+			red: [31, 39],
+			green: [32, 39],
+			yellow: [33, 39],
+			blue: [34, 39],
+			magenta: [35, 39],
+			cyan: [36, 39],
+			white: [37, 39],
+
+			// Bright color
+			blackBright: [90, 39],
+			redBright: [91, 39],
+			greenBright: [92, 39],
+			yellowBright: [93, 39],
+			blueBright: [94, 39],
+			magentaBright: [95, 39],
+			cyanBright: [96, 39],
+			whiteBright: [97, 39]
+		},
+		bgColor: {
+			bgBlack: [40, 49],
+			bgRed: [41, 49],
+			bgGreen: [42, 49],
+			bgYellow: [43, 49],
+			bgBlue: [44, 49],
+			bgMagenta: [45, 49],
+			bgCyan: [46, 49],
+			bgWhite: [47, 49],
+
+			// Bright color
+			bgBlackBright: [100, 49],
+			bgRedBright: [101, 49],
+			bgGreenBright: [102, 49],
+			bgYellowBright: [103, 49],
+			bgBlueBright: [104, 49],
+			bgMagentaBright: [105, 49],
+			bgCyanBright: [106, 49],
+			bgWhiteBright: [107, 49]
+		}
+	};
+
+	// Alias bright black as gray (and grey)
+	styles.color.gray = styles.color.blackBright;
+	styles.bgColor.bgGray = styles.bgColor.bgBlackBright;
+	styles.color.grey = styles.color.blackBright;
+	styles.bgColor.bgGrey = styles.bgColor.bgBlackBright;
+
+	for (const [groupName, group] of Object.entries(styles)) {
+		for (const [styleName, style] of Object.entries(group)) {
+			styles[styleName] = {
+				open: `\u001B[${style[0]}m`,
+				close: `\u001B[${style[1]}m`
+			};
+
+			group[styleName] = styles[styleName];
+
+			codes.set(style[0], style[1]);
+		}
+
+		Object.defineProperty(styles, groupName, {
+			value: group,
+			enumerable: false
+		});
+	}
+
+	Object.defineProperty(styles, 'codes', {
+		value: codes,
+		enumerable: false
+	});
+
+	styles.color.close = '\u001B[39m';
+	styles.bgColor.close = '\u001B[49m';
+
+	styles.color.ansi256 = wrapAnsi256();
+	styles.color.ansi16m = wrapAnsi16m();
+	styles.bgColor.ansi256 = wrapAnsi256(ANSI_BACKGROUND_OFFSET);
+	styles.bgColor.ansi16m = wrapAnsi16m(ANSI_BACKGROUND_OFFSET);
+
+	// From https://github.com/Qix-/color-convert/blob/3f0e0d4e92e235796ccb17f6e85c72094a651f49/conversions.js
+	Object.defineProperties(styles, {
+		rgbToAnsi256: {
+			value: (red, green, blue) => {
+				// We use the extended greyscale palette here, with the exception of
+				// black and white. normal palette only has 4 greyscale shades.
+				if (red === green && green === blue) {
+					if (red < 8) {
+						return 16;
+					}
+
+					if (red > 248) {
+						return 231;
+					}
+
+					return Math.round(((red - 8) / 247) * 24) + 232;
+				}
+
+				return 16 +
+					(36 * Math.round(red / 255 * 5)) +
+					(6 * Math.round(green / 255 * 5)) +
+					Math.round(blue / 255 * 5);
+			},
+			enumerable: false
+		},
+		hexToRgb: {
+			value: hex => {
+				const matches = /(?<colorString>[a-f\d]{6}|[a-f\d]{3})/i.exec(hex.toString(16));
+				if (!matches) {
+					return [0, 0, 0];
+				}
+
+				let {colorString} = matches.groups;
+
+				if (colorString.length === 3) {
+					colorString = colorString.split('').map(character => character + character).join('');
+				}
+
+				const integer = Number.parseInt(colorString, 16);
+
+				return [
+					(integer >> 16) & 0xFF,
+					(integer >> 8) & 0xFF,
+					integer & 0xFF
+				];
+			},
+			enumerable: false
+		},
+		hexToAnsi256: {
+			value: hex => styles.rgbToAnsi256(...styles.hexToRgb(hex)),
+			enumerable: false
+		}
+	});
+
+	return styles;
+}
+
+// Make the export immutable
+Object.defineProperty(module, 'exports', {
+	enumerable: true,
+	get: assembleStyles
+});

frontend/node_modules/jest-diff/node_modules/ansi-styles/license

@@ -0,0 +1,9 @@
+MIT License
+
+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.

frontend/node_modules/jest-diff/node_modules/ansi-styles/package.json

@@ -0,0 +1,52 @@
+{
+	"name": "ansi-styles",
+	"version": "5.2.0",
+	"description": "ANSI escape codes for styling strings in the terminal",
+	"license": "MIT",
+	"repository": "chalk/ansi-styles",
+	"funding": "https://github.com/chalk/ansi-styles?sponsor=1",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "https://sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=10"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd",
+		"screenshot": "svg-term --command='node screenshot' --out=screenshot.svg --padding=3 --width=55 --height=3 --at=1000 --no-cursor"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"ansi",
+		"styles",
+		"color",
+		"colour",
+		"colors",
+		"terminal",
+		"console",
+		"cli",
+		"string",
+		"tty",
+		"escape",
+		"formatting",
+		"rgb",
+		"256",
+		"shell",
+		"xterm",
+		"log",
+		"logging",
+		"command-line",
+		"text"
+	],
+	"devDependencies": {
+		"ava": "^2.4.0",
+		"svg-term-cli": "^2.1.1",
+		"tsd": "^0.14.0",
+		"xo": "^0.37.1"
+	}
+}

frontend/node_modules/jest-diff/node_modules/ansi-styles/readme.md

@@ -0,0 +1,144 @@
+# ansi-styles
+
+> [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code#Colors_and_Styles) for styling strings in the terminal
+
+You probably want the higher-level [chalk](https://github.com/chalk/chalk) module for styling your strings.
+
+<img src="screenshot.svg" width="900">
+
+## Install
+
+```
+$ npm install ansi-styles
+```
+
+## Usage
+
+```js
+const style = require('ansi-styles');
+
+console.log(`${style.green.open}Hello world!${style.green.close}`);
+
+
+// Color conversion between 256/truecolor
+// NOTE: When converting from truecolor to 256 colors, the original color
+//       may be degraded to fit the new color palette. This means terminals
+//       that do not support 16 million colors will best-match the
+//       original color.
+console.log(`${style.color.ansi256(style.rgbToAnsi256(199, 20, 250))}Hello World${style.color.close}`)
+console.log(`${style.color.ansi16m(...style.hexToRgb('#abcdef'))}Hello World${style.color.close}`)
+```
+
+## API
+
+Each style has an `open` and `close` property.
+
+## Styles
+
+### Modifiers
+
+- `reset`
+- `bold`
+- `dim`
+- `italic` *(Not widely supported)*
+- `underline`
+- `overline` *Supported on VTE-based terminals, the GNOME terminal, mintty, and Git Bash.*
+- `inverse`
+- `hidden`
+- `strikethrough` *(Not widely supported)*
+
+### Colors
+
+- `black`
+- `red`
+- `green`
+- `yellow`
+- `blue`
+- `magenta`
+- `cyan`
+- `white`
+- `blackBright` (alias: `gray`, `grey`)
+- `redBright`
+- `greenBright`
+- `yellowBright`
+- `blueBright`
+- `magentaBright`
+- `cyanBright`
+- `whiteBright`
+
+### Background colors
+
+- `bgBlack`
+- `bgRed`
+- `bgGreen`
+- `bgYellow`
+- `bgBlue`
+- `bgMagenta`
+- `bgCyan`
+- `bgWhite`
+- `bgBlackBright` (alias: `bgGray`, `bgGrey`)
+- `bgRedBright`
+- `bgGreenBright`
+- `bgYellowBright`
+- `bgBlueBright`
+- `bgMagentaBright`
+- `bgCyanBright`
+- `bgWhiteBright`
+
+## Advanced usage
+
+By default, you get a map of styles, but the styles are also available as groups. They are non-enumerable so they don't show up unless you access them explicitly. This makes it easier to expose only a subset in a higher-level module.
+
+- `style.modifier`
+- `style.color`
+- `style.bgColor`
+
+###### Example
+
+```js
+console.log(style.color.green.open);
+```
+
+Raw escape codes (i.e. without the CSI escape prefix `\u001B[` and render mode postfix `m`) are available under `style.codes`, which returns a `Map` with the open codes as keys and close codes as values.
+
+###### Example
+
+```js
+console.log(style.codes.get(36));
+//=> 39
+```
+
+## [256 / 16 million (TrueColor) support](https://gist.github.com/XVilka/8346728)
+
+`ansi-styles` allows converting between various color formats and ANSI escapes, with support for 256 and 16 million colors.
+
+The following color spaces from `color-convert` are supported:
+
+- `rgb`
+- `hex`
+- `ansi256`
+
+To use these, call the associated conversion function with the intended output, for example:
+
+```js
+style.color.ansi256(style.rgbToAnsi256(100, 200, 15)); // RGB to 256 color ansi foreground code
+style.bgColor.ansi256(style.hexToAnsi256('#C0FFEE')); // HEX to 256 color ansi foreground code
+
+style.color.ansi16m(100, 200, 15); // RGB to 16 million color foreground code
+style.bgColor.ansi16m(...style.hexToRgb('#C0FFEE')); // Hex (RGB) to 16 million color foreground code
+```
+
+## Related
+
+- [ansi-escapes](https://github.com/sindresorhus/ansi-escapes) - ANSI escape codes for manipulating the terminal
+
+## Maintainers
+
+- [Sindre Sorhus](https://github.com/sindresorhus)
+- [Josh Junon](https://github.com/qix-)
+
+## For enterprise
+
+Available as part of the Tidelift Subscription.
+
+The maintainers of `ansi-styles` and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-ansi-styles?utm_source=npm-ansi-styles&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)

frontend/node_modules/jest-diff/node_modules/pretty-format/LICENSE

@@ -0,0 +1,22 @@
+MIT License
+
+Copyright (c) Meta Platforms, Inc. and affiliates.
+Copyright Contributors to the Jest project.
+
+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.

frontend/node_modules/jest-diff/node_modules/pretty-format/README.md

@@ -0,0 +1,463 @@
+# pretty-format
+
+Stringify any JavaScript value.
+
+- Serialize built-in JavaScript types.
+- Serialize application-specific data types with built-in or user-defined plugins.
+
+## Installation
+
+```sh
+$ yarn add pretty-format
+```
+
+## Usage
+
+```js
+const {format: prettyFormat} = require('pretty-format'); // CommonJS
+```
+
+```js
+import {format as prettyFormat} from 'pretty-format'; // ES2015 modules
+```
+
+```js
+const val = {object: {}};
+val.circularReference = val;
+val[Symbol('foo')] = 'foo';
+val.map = new Map([['prop', 'value']]);
+val.array = [-0, Infinity, NaN];
+
+console.log(prettyFormat(val));
+/*
+Object {
+  "array": Array [
+    -0,
+    Infinity,
+    NaN,
+  ],
+  "circularReference": [Circular],
+  "map": Map {
+    "prop" => "value",
+  },
+  "object": Object {},
+  Symbol(foo): "foo",
+}
+*/
+```
+
+## Usage with options
+
+```js
+function onClick() {}
+
+console.log(prettyFormat(onClick));
+/*
+[Function onClick]
+*/
+
+const options = {
+  printFunctionName: false,
+};
+console.log(prettyFormat(onClick, options));
+/*
+[Function]
+*/
+```
+
+<!-- prettier-ignore -->
+| key                   | type             | default     | description                                                                             |
+| :-------------------- | :--------------- | :---------- | :-------------------------------------------------------------------------------------- |
+| `callToJSON`          | `boolean`        | `true`      | call `toJSON` method (if it exists) on objects                                          |
+| `compareKeys`         | `function\|null` | `undefined` | compare function used when sorting object keys, `null` can be used to skip over sorting |
+| `escapeRegex`         | `boolean`        | `false`     | escape special characters in regular expressions                                        |
+| `escapeString`        | `boolean`        | `true`      | escape special characters in strings                                                    |
+| `highlight`           | `boolean`        | `false`     | highlight syntax with colors in terminal (some plugins)                                 |
+| `indent`              | `number`         | `2`         | spaces in each level of indentation                                                     |
+| `maxDepth`            | `number`         | `Infinity`  | levels to print in arrays, objects, elements, and so on                                 |
+| `maxWidth`            | `number`         | `Infinity`  | number of elements to print in arrays, sets, and so on                                  |
+| `min`                 | `boolean`        | `false`     | minimize added space: no indentation nor line breaks                                    |
+| `plugins`             | `array`          | `[]`        | plugins to serialize application-specific data types                                    |
+| `printBasicPrototype` | `boolean`        | `false`     | print the prototype for plain objects and arrays                                        |
+| `printFunctionName`   | `boolean`        | `true`      | include or omit the name of a function                                                  |
+| `theme`               | `object`         |             | colors to highlight syntax in terminal                                                  |
+
+Property values of `theme` are from [ansi-styles colors](https://github.com/chalk/ansi-styles#colors)
+
+```js
+const DEFAULT_THEME = {
+  comment: 'gray',
+  content: 'reset',
+  prop: 'yellow',
+  tag: 'cyan',
+  value: 'green',
+};
+```
+
+## Usage with plugins
+
+The `pretty-format` package provides some built-in plugins, including:
+
+- `ReactElement` for elements from `react`
+- `ReactTestComponent` for test objects from `react-test-renderer`
+
+```js
+// CommonJS
+const React = require('react');
+const renderer = require('react-test-renderer');
+const {format: prettyFormat, plugins} = require('pretty-format');
+
+const {ReactElement, ReactTestComponent} = plugins;
+```
+
+```js
+// ES2015 modules and destructuring assignment
+import React from 'react';
+import renderer from 'react-test-renderer';
+import {plugins, format as prettyFormat} from 'pretty-format';
+
+const {ReactElement, ReactTestComponent} = plugins;
+```
+
+```js
+const onClick = () => {};
+const element = React.createElement('button', {onClick}, 'Hello World');
+
+const formatted1 = prettyFormat(element, {
+  plugins: [ReactElement],
+  printFunctionName: false,
+});
+const formatted2 = prettyFormat(renderer.create(element).toJSON(), {
+  plugins: [ReactTestComponent],
+  printFunctionName: false,
+});
+/*
+<button
+  onClick=[Function]
+>
+  Hello World
+</button>
+*/
+```
+
+## Usage in Jest
+
+For snapshot tests, Jest uses `pretty-format` with options that include some of its built-in plugins. For this purpose, plugins are also known as **snapshot serializers**.
+
+To serialize application-specific data types, you can add modules to `devDependencies` of a project, and then:
+
+In an **individual** test file, you can add a module as follows. It precedes any modules from Jest configuration.
+
+```js
+import serializer from 'my-serializer-module';
+expect.addSnapshotSerializer(serializer);
+
+// tests which have `expect(value).toMatchSnapshot()` assertions
+```
+
+For **all** test files, you can specify modules in Jest configuration. They precede built-in plugins for React, HTML, and Immutable.js data types. For example, in a `package.json` file:
+
+```json
+{
+  "jest": {
+    "snapshotSerializers": ["my-serializer-module"]
+  }
+}
+```
+
+## Writing plugins
+
+A plugin is a JavaScript object.
+
+If `options` has a `plugins` array: for the first plugin whose `test(val)` method returns a truthy value, then `prettyFormat(val, options)` returns the result from either:
+
+- `serialize(val, …)` method of the **improved** interface (available in **version 21** or later)
+- `print(val, …)` method of the **original** interface (if plugin does not have `serialize` method)
+
+### test
+
+Write `test` so it can receive `val` argument of any type. To serialize **objects** which have certain properties, then a guarded expression like `val != null && …` or more concise `val && …` prevents the following errors:
+
+- `TypeError: Cannot read property 'whatever' of null`
+- `TypeError: Cannot read property 'whatever' of undefined`
+
+For example, `test` method of built-in `ReactElement` plugin:
+
+```js
+const elementSymbol = Symbol.for('react.element');
+const test = val => val && val.$$typeof === elementSymbol;
+```
+
+Pay attention to efficiency in `test` because `pretty-format` calls it often.
+
+### serialize
+
+The **improved** interface is available in **version 21** or later.
+
+Write `serialize` to return a string, given the arguments:
+
+- `val` which “passed the test”
+- unchanging `config` object: derived from `options`
+- current `indentation` string: concatenate to `indent` from `config`
+- current `depth` number: compare to `maxDepth` from `config`
+- current `refs` array: find circular references in objects
+- `printer` callback function: serialize children
+
+### config
+
+<!-- prettier-ignore -->
+| key                 | type             | description                                                                             |
+| :------------------ | :--------------- | :-------------------------------------------------------------------------------------- |
+| `callToJSON`        | `boolean`        | call `toJSON` method (if it exists) on objects                                          |
+| `compareKeys`       | `function\|null` | compare function used when sorting object keys, `null` can be used to skip over sorting |
+| `colors`            | `Object`         | escape codes for colors to highlight syntax                                             |
+| `escapeRegex`       | `boolean`        | escape special characters in regular expressions                                        |
+| `escapeString`      | `boolean`        | escape special characters in strings                                                    |
+| `indent`            | `string`         | spaces in each level of indentation                                                     |
+| `maxDepth`          | `number`         | levels to print in arrays, objects, elements, and so on                                 |
+| `min`               | `boolean`        | minimize added space: no indentation nor line breaks                                    |
+| `plugins`           | `array`          | plugins to serialize application-specific data types                                    |
+| `printFunctionName` | `boolean`        | include or omit the name of a function                                                  |
+| `spacingInner`      | `string`         | spacing to separate items in a list                                                     |
+| `spacingOuter`      | `string`         | spacing to enclose a list of items                                                      |
+
+Each property of `colors` in `config` corresponds to a property of `theme` in `options`:
+
+- the key is the same (for example, `tag`)
+- the value in `colors` is a object with `open` and `close` properties whose values are escape codes from [ansi-styles](https://github.com/chalk/ansi-styles) for the color value in `theme` (for example, `'cyan'`)
+
+Some properties in `config` are derived from `min` in `options`:
+
+- `spacingInner` and `spacingOuter` are **newline** if `min` is `false`
+- `spacingInner` is **space** and `spacingOuter` is **empty string** if `min` is `true`
+
+### Example of serialize and test
+
+This plugin is a pattern you can apply to serialize composite data types. Side note: `pretty-format` does not need a plugin to serialize arrays.
+
+```js
+// We reused more code when we factored out a function for child items
+// that is independent of depth, name, and enclosing punctuation (see below).
+const SEPARATOR = ',';
+function serializeItems(items, config, indentation, depth, refs, printer) {
+  if (items.length === 0) {
+    return '';
+  }
+  const indentationItems = indentation + config.indent;
+  return (
+    config.spacingOuter +
+    items
+      .map(
+        item =>
+          indentationItems +
+          printer(item, config, indentationItems, depth, refs), // callback
+      )
+      .join(SEPARATOR + config.spacingInner) +
+    (config.min ? '' : SEPARATOR) + // following the last item
+    config.spacingOuter +
+    indentation
+  );
+}
+
+const plugin = {
+  test(val) {
+    return Array.isArray(val);
+  },
+  serialize(array, config, indentation, depth, refs, printer) {
+    const name = array.constructor.name;
+    return ++depth > config.maxDepth
+      ? `[${name}]`
+      : `${config.min ? '' : `${name} `}[${serializeItems(
+          array,
+          config,
+          indentation,
+          depth,
+          refs,
+          printer,
+        )}]`;
+  },
+};
+```
+
+```js
+const val = {
+  filter: 'completed',
+  items: [
+    {
+      text: 'Write test',
+      completed: true,
+    },
+    {
+      text: 'Write serialize',
+      completed: true,
+    },
+  ],
+};
+```
+
+```js
+console.log(
+  prettyFormat(val, {
+    plugins: [plugin],
+  }),
+);
+/*
+Object {
+  "filter": "completed",
+  "items": Array [
+    Object {
+      "completed": true,
+      "text": "Write test",
+    },
+    Object {
+      "completed": true,
+      "text": "Write serialize",
+    },
+  ],
+}
+*/
+```
+
+```js
+console.log(
+  prettyFormat(val, {
+    indent: 4,
+    plugins: [plugin],
+  }),
+);
+/*
+Object {
+    "filter": "completed",
+    "items": Array [
+        Object {
+            "completed": true,
+            "text": "Write test",
+        },
+        Object {
+            "completed": true,
+            "text": "Write serialize",
+        },
+    ],
+}
+*/
+```
+
+```js
+console.log(
+  prettyFormat(val, {
+    maxDepth: 1,
+    plugins: [plugin],
+  }),
+);
+/*
+Object {
+  "filter": "completed",
+  "items": [Array],
+}
+*/
+```
+
+```js
+console.log(
+  prettyFormat(val, {
+    min: true,
+    plugins: [plugin],
+  }),
+);
+/*
+{"filter": "completed", "items": [{"completed": true, "text": "Write test"}, {"completed": true, "text": "Write serialize"}]}
+*/
+```
+
+### print
+
+The **original** interface is adequate for plugins:
+
+- that **do not** depend on options other than `highlight` or `min`
+- that **do not** depend on `depth` or `refs` in recursive traversal, and
+- if values either
+  - do **not** require indentation, or
+  - do **not** occur as children of JavaScript data structures (for example, array)
+
+Write `print` to return a string, given the arguments:
+
+- `val` which “passed the test”
+- current `printer(valChild)` callback function: serialize children
+- current `indenter(lines)` callback function: indent lines at the next level
+- unchanging `config` object: derived from `options`
+- unchanging `colors` object: derived from `options`
+
+The 3 properties of `config` are `min` in `options` and:
+
+- `spacing` and `edgeSpacing` are **newline** if `min` is `false`
+- `spacing` is **space** and `edgeSpacing` is **empty string** if `min` is `true`
+
+Each property of `colors` corresponds to a property of `theme` in `options`:
+
+- the key is the same (for example, `tag`)
+- the value in `colors` is a object with `open` and `close` properties whose values are escape codes from [ansi-styles](https://github.com/chalk/ansi-styles) for the color value in `theme` (for example, `'cyan'`)
+
+### Example of print and test
+
+This plugin prints functions with the **number of named arguments** excluding rest argument.
+
+```js
+const plugin = {
+  print(val) {
+    return `[Function ${val.name || 'anonymous'} ${val.length}]`;
+  },
+  test(val) {
+    return typeof val === 'function';
+  },
+};
+```
+
+```js
+const val = {
+  onClick(event) {},
+  render() {},
+};
+
+prettyFormat(val, {
+  plugins: [plugin],
+});
+/*
+Object {
+  "onClick": [Function onClick 1],
+  "render": [Function render 0],
+}
+*/
+
+prettyFormat(val);
+/*
+Object {
+  "onClick": [Function onClick],
+  "render": [Function render],
+}
+*/
+```
+
+This plugin **ignores** the `printFunctionName` option. That limitation of the original `print` interface is a reason to use the improved `serialize` interface, described above.
+
+```js
+prettyFormat(val, {
+  plugins: [pluginOld],
+  printFunctionName: false,
+});
+/*
+Object {
+  "onClick": [Function onClick 1],
+  "render": [Function render 0],
+}
+*/
+
+prettyFormat(val, {
+  printFunctionName: false,
+});
+/*
+Object {
+  "onClick": [Function],
+  "render": [Function],
+}
+*/
+```

frontend/node_modules/jest-diff/node_modules/pretty-format/build/index.d.ts

@@ -0,0 +1,164 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {SnapshotFormat} from '@jest/schemas';
+
+export declare type Colors = {
+  comment: {
+    close: string;
+    open: string;
+  };
+  content: {
+    close: string;
+    open: string;
+  };
+  prop: {
+    close: string;
+    open: string;
+  };
+  tag: {
+    close: string;
+    open: string;
+  };
+  value: {
+    close: string;
+    open: string;
+  };
+};
+
+export declare type CompareKeys =
+  | ((a: string, b: string) => number)
+  | null
+  | undefined;
+
+export declare type Config = {
+  callToJSON: boolean;
+  compareKeys: CompareKeys;
+  colors: Colors;
+  escapeRegex: boolean;
+  escapeString: boolean;
+  indent: string;
+  maxDepth: number;
+  maxWidth: number;
+  min: boolean;
+  plugins: Plugins;
+  printBasicPrototype: boolean;
+  printFunctionName: boolean;
+  spacingInner: string;
+  spacingOuter: string;
+};
+
+export declare const DEFAULT_OPTIONS: {
+  callToJSON: true;
+  compareKeys: undefined;
+  escapeRegex: false;
+  escapeString: true;
+  highlight: false;
+  indent: number;
+  maxDepth: number;
+  maxWidth: number;
+  min: false;
+  plugins: Array<never>;
+  printBasicPrototype: true;
+  printFunctionName: true;
+  theme: Required<{
+    comment?: string | undefined;
+    content?: string | undefined;
+    prop?: string | undefined;
+    tag?: string | undefined;
+    value?: string | undefined;
+  }>;
+};
+
+/**
+ * Returns a presentation string of your `val` object
+ * @param val any potential JavaScript object
+ * @param options Custom settings
+ */
+declare function format(val: unknown, options?: OptionsReceived): string;
+export default format;
+export {format};
+
+declare type Indent = (arg0: string) => string;
+
+export declare type NewPlugin = {
+  serialize: (
+    val: any,
+    config: Config,
+    indentation: string,
+    depth: number,
+    refs: Refs,
+    printer: Printer,
+  ) => string;
+  test: Test;
+};
+
+export declare type OldPlugin = {
+  print: (
+    val: unknown,
+    print: Print,
+    indent: Indent,
+    options: PluginOptions,
+    colors: Colors,
+  ) => string;
+  test: Test;
+};
+
+export declare interface Options
+  extends Omit<RequiredOptions, 'compareKeys' | 'theme'> {
+  compareKeys: CompareKeys;
+  theme: Required<RequiredOptions['theme']>;
+}
+
+export declare type OptionsReceived = PrettyFormatOptions;
+
+declare type Plugin_2 = NewPlugin | OldPlugin;
+export {Plugin_2 as Plugin};
+
+declare type PluginOptions = {
+  edgeSpacing: string;
+  min: boolean;
+  spacing: string;
+};
+
+export declare type Plugins = Array<Plugin_2>;
+
+export declare const plugins: {
+  AsymmetricMatcher: NewPlugin;
+  DOMCollection: NewPlugin;
+  DOMElement: NewPlugin;
+  Immutable: NewPlugin;
+  ReactElement: NewPlugin;
+  ReactTestComponent: NewPlugin;
+};
+
+export declare interface PrettyFormatOptions
+  extends Omit<SnapshotFormat, 'compareKeys'> {
+  compareKeys?: CompareKeys;
+  plugins?: Plugins;
+}
+
+declare type Print = (arg0: unknown) => string;
+
+export declare type Printer = (
+  val: unknown,
+  config: Config,
+  indentation: string,
+  depth: number,
+  refs: Refs,
+  hasCalledToJSON?: boolean,
+) => string;
+
+export declare type Refs = Array<unknown>;
+
+declare type RequiredOptions = Required<PrettyFormatOptions>;
+
+declare type Test = (arg0: any) => boolean;
+
+export declare type Theme = Options['theme'];
+
+export {};

frontend/node_modules/jest-diff/node_modules/pretty-format/build/index.mjs

@@ -0,0 +1,6 @@
+import cjsModule from './index.js';
+
+export const DEFAULT_OPTIONS = cjsModule.DEFAULT_OPTIONS;
+export const format = cjsModule.format;
+export const plugins = cjsModule.plugins;
+export default cjsModule.default;

frontend/node_modules/jest-diff/node_modules/pretty-format/package.json

@@ -0,0 +1,45 @@
+{
+  "name": "pretty-format",
+  "version": "30.0.2",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/jestjs/jest.git",
+    "directory": "packages/pretty-format"
+  },
+  "license": "MIT",
+  "description": "Stringify any JavaScript value.",
+  "main": "./build/index.js",
+  "types": "./build/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./build/index.d.ts",
+      "require": "./build/index.js",
+      "import": "./build/index.mjs",
+      "default": "./build/index.js"
+    },
+    "./package.json": "./package.json"
+  },
+  "author": "James Kyle <me@thejameskyle.com>",
+  "dependencies": {
+    "@jest/schemas": "30.0.1",
+    "ansi-styles": "^5.2.0",
+    "react-is": "^18.3.1"
+  },
+  "devDependencies": {
+    "@types/react": "^18.3.23",
+    "@types/react-is": "^18.3.1",
+    "@types/react-test-renderer": "^18.3.1",
+    "immutable": "^5.1.2",
+    "jest-util": "30.0.2",
+    "react": "18.3.1",
+    "react-dom": "18.3.1",
+    "react-test-renderer": "18.3.1"
+  },
+  "engines": {
+    "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "gitHead": "393acbfac31f64bb38dff23c89224797caded83c"
+}

frontend/node_modules/jest-diff/package.json

@@ -0,0 +1,37 @@
+{
+  "name": "jest-diff",
+  "version": "30.0.4",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/jestjs/jest.git",
+    "directory": "packages/jest-diff"
+  },
+  "license": "MIT",
+  "main": "./build/index.js",
+  "types": "./build/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./build/index.d.ts",
+      "require": "./build/index.js",
+      "import": "./build/index.mjs",
+      "default": "./build/index.js"
+    },
+    "./package.json": "./package.json"
+  },
+  "dependencies": {
+    "@jest/diff-sequences": "30.0.1",
+    "@jest/get-type": "30.0.1",
+    "chalk": "^4.1.2",
+    "pretty-format": "30.0.2"
+  },
+  "devDependencies": {
+    "@jest/test-utils": "30.0.4"
+  },
+  "engines": {
+    "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "gitHead": "f4296d2bc85c1405f84ddf613a25d0bc3766b7e5"
+}