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/filelist/README.md

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+## FileList
+
+A FileList is a lazy-evaluated list of files. When given a list
+of glob patterns for possible files to be included in the file
+list, instead of searching the file structures to find the files,
+a FileList holds the pattern for latter use.
+
+This allows you to define a FileList to match any number of
+files, but only search out the actual files when then FileList
+itself is actually used. The key is that the first time an
+element of the FileList/Array is requested, the pending patterns
+are resolved into a real list of file names.
+
+### Usage
+
+Add files to the list with the `include` method. You can add glob
+patterns, individual files, or RegExp objects. When the Array
+methods are invoked on the FileList, these items are resolved to
+an actual list of files.
+
+```javascript
+var fl = new FileList();
+fl.include('test/*.js');
+fl.exclude('test/helpers.js');
+```
+
+Use the `exclude` method to override inclusions. You can use this
+when your inclusions are too broad.
+
+### Array methods
+
+FileList has lazy-evaluated versions of most of the array
+methods, including the following:
+
+* join
+* pop
+* push
+* concat
+* reverse
+* shift
+* unshift
+* slice
+* splice
+* sort
+* filter
+* forEach
+* some
+* every
+* map
+* indexOf
+* lastIndexOf
+* reduce
+* reduceRight
+
+When you call one of these methods, the items in the FileList
+will be resolved to the full list of files, and the method will
+be invoked on that result.
+
+### Special `length` method
+
+`length`: FileList includes a length *method* (instead of a
+property) which returns the number of actual files in the list
+once it's been resolved.
+
+### FileList-specific methods
+
+`include`: Add a filename/glob/regex to the list
+
+`exclude`: Override inclusions by excluding a filename/glob/regex
+
+`resolve`: Resolve the items in the FileList to the full list of
+files. This method is invoked automatically when one of the array
+methods is called.
+
+`toArray`: Immediately resolves the list of items, and returns an
+actual array of filepaths.
+
+`clearInclusions`: Clears any pending items -- must be used
+before resolving the list.
+
+`clearExclusions`: Clears the list of exclusions rules.
+
+
+