Create generic dev mode to enable dev only features

[987Nabil]

We want to have the option to start a zio http app in dev mode. This should be easily configurable and is A requirement to add dev only features.

[jdegoes]

/bounty $250

[algora-pbc]

💎 $250 bounty • ZIO

Steps to solve:

1. Start working: Comment /attempt #3644 with your implementation plan
2. Submit work: Create a pull request including /claim #3644 in the PR body to claim the bounty
3. Receive payment: 100% of the bounty is received 2-5 days post-reward. Make sure you are eligible for payouts

❗ Important guidelines:

• To claim a bounty, you need to provide a short demo video of your changes in your pull request
• If anything is unclear, ask for clarification before starting as this will help avoid potential rework
• Low quality AI PRs will not receive review and will be closed
• Do not ask to be assigned unless you've contributed before

Thank you for contributing to zio/zio-http!

Attempt	Started (UTC)	Solution	Actions
🟢 @987Nabil	Sep 24, 2025, 12:04:53 PM	#3709	Reward
🟢 @shashtag	Aug 31, 2025, 04:31:35 AM	WIP

[saurabhraghuvanshii]

internal ?

[987Nabil]

Yes

[shashtag]

/attempt #3644

Hi @987Nabil I would like to work on this. Please can you assign me this issue. Plus can you elaborate on the requirements for the dev mode? Like what could I consider the exit criteria?

[987Nabil]

Internal bohnty

[shashtag]

Is there any task I could take?