Implement the upgrade to minds+ in-feed notice



## Goal

The Upgrade to Minds+ in-feed notice is missing on mobile. 

We need to implement this on mobile

https://gitlab.com/minds/minds/-/issues/3639


Learn what value prop messaging for Minds+ best converts for all users in the context of the Newsfeed.

## What needs to be done

Deploy an experiment that tests various messages via an in-feed notice on the Newsfeed, prompting users to upgrade to Minds+.

![image](/uploads/9316b831ca7d657101e76ce90f14c107/image.png)

| Notice            | Description                                                                                                                                                        | Dismissable | Position | Sticky | Display priority | Conditions                                               | Primary action               | Secondary action                  |
|-------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------|----------|--------|------------------|----------------------------------------------------------|------------------------------|-----------------------------------|
| Upgrade to Minds+ | Support Minds and unlock features such as earning revenue for your content, hiding ads, accessing exclusive content, receiving a badge and verifying your channel. | Yes         | Top      | No     | 3.2              | Channel is NOT already Plus, and is at least 30 days old | Upgrade (opens Minds+ modal) | Learn More (opens minds.com/plus) |
| Upgrade to Minds+ | Free-thinking content creators like you earn more and grow their reach with Minds+.                                                                                | Yes         | Top      | No     | 3.2              | Channel is NOT already Plus, and is at least 30 days old | Upgrade (opens Minds+ modal) | Learn More (opens minds.com/plus) |
| Upgrade to Minds+ | Access exclusive content produced by the Minds+ community.                                                                                                         | Yes         | Top      | No     | 3.2              | Channel is NOT already Plus, and is at least 30 days old | Upgrade (opens Minds+ modal) | Learn More (opens minds.com/plus) |
| Upgrade to Minds+ | Get verified, hide ads, and get the most of your Minds experience.                                                                                                 | Yes         | Top      | No     | 3.2              | Channel is NOT already Plus, and is at least 30 days old | Upgrade (opens Minds+ modal) | Learn More (opens minds.com/plus) |
| Upgrade to Minds+ | Support Minds and creators like you.                                                                                                                               | Yes         | Top      | No     | 3.2              | Channel is NOT already Plus, and is at least 30 days old | Upgrade (opens Minds+ modal) | Learn More (opens minds.com/plus) |

## QA

Same as front

## UX/Design

https://gitlab.com/minds/minds/-/issues/3639

## Experiments

It should be behind an experiment FF like the front end

## Acceptance Criteria

- [ ] A new notice must be aded

## Definition of Ready Checklist

- [ ] Definition Of Done (DoD)
- [ ] Acceptance criteria
- [ ] Weighted
- [ ] QA
- [ ] UX/Design
- [ ] Personas
- [ ] Experiments

Story points: 2.0