## Context
Drops the `@std/path` dependency which is used in `EdgeFunctions.utils`
as `npm.jsr.io` was putting up a Cloudflare bot challenge on some
connections which blocks `pnpm install`. Instead, opting to directly
port the exact required methods as self-contained functions. Also added
some unit tests to check that UI behaviour remains status quo.
## To test:
Important to test that everything in the edge functions UI remains
status quo
- [ ] Open an existing edge function with a single root-level file -
should load as expected
<img width="310" height="176" alt="image"
src="https://github.com/user-attachments/assets/4d724ab0-33bb-4093-a574-52984b2743fd"
/>
- [ ] Open (or create) an edge function with nested folders - confirm
file paths in the editor are shown correctly
- Can create nested folders by using `../` as such
<img width="319" height="228" alt="image"
src="https://github.com/user-attachments/assets/dd345b1f-7c45-47e9-975c-f2f2e53a0106"
/>
- [ ] Similarly, download the edge function as ZIP to verify that the
nested folders are all correctly located
- [ ] Open a function with `import_map.json` - confirm still detected as
import map through the network tab GET request for the edge function
code (Examples here with and without import map)
<img width="333" height="245" alt="image"
src="https://github.com/user-attachments/assets/90fc90e3-4a62-493b-9246-ed7e3b662e96"
/>
<img width="290" height="237" alt="image"
src="https://github.com/user-attachments/assets/2f692362-c9d4-4394-bc5a-4f84ab5fb6f1"
/>
- [ ] Deploy a new function via the editor
- [ ] Update an existing function via the editor (Test adding new files
etc)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **Bug Fixes**
- Improved Edge Functions file path handling across supported
application environments.
- Nested entrypoints, URL-based entrypoints, root-level files, and
unmatched paths are now handled consistently.
- Generated files retain their content and receive sequential
identifiers reliably.
- Improved compatibility when processing and displaying files in
different application environments.
- **Tests**
- Added coverage for entrypoint path formatting, relative paths,
fallback behavior, unchanged paths, and identifier assignment.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Joshen Lim