feat(example): Optimistic Oracle implementation

[Intermarch3]

Description

In my journey to upskill on Gno.land, my first significant project is leveraging my knowledge of existing Ethereum smart contracts to implement an optimistic oracle, inspired by UMA Optimistic Oracle and their use in the well-known dApp Polymarket.
Here is a simplified implementation.

Add the following Realms:

r/intermarch3/home: my personal page and link to the oracle

r/intermarch3/oo: the oracle

[Gno2D2]

🛠 PR Checks Summary

All Automated Checks passed. ✅

Manual Checks (for Reviewers):

• IGNORE the bot requirements for this PR (force green CI check)
• The pull request description provides enough details

Read More

🤖 This bot helps streamline PR reviews by verifying automated checks and providing guidance for contributors and reviewers.

✅ Automated Checks (for Contributors):

🟢 Maintainers must be able to edit this pull request (more info)
🟢 Pending initial approval by a review team member, or review from tech-staff

☑️ Contributor Actions:

1. Fix any issues flagged by automated checks.
2. Follow the Contributor Checklist to ensure your PR is ready for review.
   • Add new tests, or document why they are unnecessary.
   • Provide clear examples/screenshots, if necessary.
   • Update documentation, if required.
   • Ensure no breaking changes, or include BREAKING CHANGE notes.
   • Link related issues/PRs, where applicable.

☑️ Reviewer Actions:

1. Complete manual checks for the PR, including the guidelines and additional checks if applicable.

📚 Resources:

• Report a bug with the bot.
• View the bot’s configuration file.

Debug

Automated Checks

Maintainers must be able to edit this pull request (more info)

If

🟢 Condition met
└── 🟢 And
    ├── 🟢 The base branch matches this pattern: ^master$
    └── 🟢 The pull request was created from a fork (head branch repo: Intermarch3/gno)

Then

🟢 Requirement satisfied
└── 🟢 Maintainer can modify this pull request

Pending initial approval by a review team member, or review from tech-staff

If

🟢 Condition met
└── 🟢 And
    ├── 🟢 The base branch matches this pattern: ^master$
    └── 🟢 Not (🔴 Pull request author is a member of the team: tech-staff)

Then

🟢 Requirement satisfied
└── 🟢 If
    ├── 🟢 Condition
    │   └── 🟢 Or
    │       ├── 🔴 At least one of these user(s) reviewed the pull request: [jefft0 leohhhn n0izn0iz notJoon omarsy x1unix] (with state "APPROVED")
    │       ├── 🔴 At least 1 user(s) of the team tech-staff reviewed pull request
    │       └── 🟢 This pull request is a draft
    └── 🟢 Then
        └── 🟢 Not (🔴 This label is applied to pull request: review/triage-pending)

Manual Checks

**IGNORE** the bot requirements for this PR (force green CI check)

If

🟢 Condition met
└── 🟢 On every pull request

Can be checked by

• Any user with comment edit permission

The pull request description provides enough details

If

🟢 Condition met
└── 🟢 And
    ├── 🟢 Not (🔴 Pull request author is a member of the team: core-contributors)
    └── 🟢 Not (🔴 Pull request author is user: dependabot[bot])

Can be checked by

• team core-contributors

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[leohhhn]

hey, this is really cool. I'm leaving some preliminary comments below.

Please add tests to cover the functionality, and ideally, a realm that would be able to showcase how the OO can be used.

In general, I suggest you check out best Go writing practices; this code is okay but it's clear that it was taken as a port from Solidity

[leohhhn]

Hey, do you plan to continue working on this?

[Intermarch3]

Hey, do you plan to continue working on this?

Yes, of course. I was quite busy, but I’m starting my student program with Gno next week, so I will follow up on this project.

[Intermarch3]

As discussed, we move this project here : gnoverse/community#16