[BUG] Fix local development windows environment

[DarianM]

Steps to reproduce

Run the script on a Windows machine:
pnpm dev

Expected result

For the concurrently package issue: The pnpm dev command should execute on Windows the same way it does on macOS/Linux

For the testnet wallet:frontend script issue: For the wallet frontend dev command should start nextjs in development mode, but does not recognize the PORT=4003 environment variable on Windows.

Actual result

• concurrently issue: The pnpm devcommand fails on Windows due to single quotes (') being unrecognized, causing syntax errors and pnpm to not be recognized as command.
• env variable issue for testnet wallet frontend: On Windows, the command fails with the error:

'PORT' is not recognized as an internal or external command, operable program or batch file.

and fails to open the localhost:4003 for the testnet frontend wallet

Screenshots or videos

pnpm dev command

testnet wallet frontend

Additional context

These issues occur specifically on Windows, where syntax differences for setting environment variables and handling quotes in shell scripts differ from systems like macOS and Linux.

Operating system

Windows

Operating system version

No response

Browsers

Firefox

Browser version

No response