Add Jevtown

[gaborishka]

Jevtown is a town of 10,000 computed personas that reads a post, a listing, a product or a headline. One opening request scores the text against about 60 audience attributes (83 for a listing or a product) plus seven moderation questions and plans the first wave of 600 readers; batched Choice questions return each persona's reaction, and the text reaches the next wave only while glad reactions outweigh sorry ones.

Live: https://jevtown.ivanhabor.com (no sign-in)
Source, MIT: https://github.com/gaborishka/jevtown
The Jev calls: public/shared/requests.js and public/shared/presets.js
Measurements behind the design: docs/measurements.md

Personas are computed from their id in public/shared/personas.js rather than written by a model, so the same id is always the same person, and each reaction is sampled from the probabilities Jev returns with a per-persona seed instead of taking the top answer. The reactions are a simulation of a typed audience, not a forecast of real behaviour, and the entry says so.

Disclosure: I built it.

Category demos, alongside Crowdcheck. Crowdcheck takes one 144-character post behind a Google sign-in; Jevtown takes four text types, no sign-in, and a feed algorithm decides how far each text travels. Only data/projects.json is touched, and npm run validate passes.

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Summary by CodeRabbit

• New Features
  • Added the Jevtown demo project to the project catalog.
  • Includes links to its repository and live site, along with its JavaScript classification and project metadata.

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📝 Walkthrough

Walkthrough

The project catalog adds Jevtown as a JavaScript demo with repository, site, description, star count, and added date metadata.

Changes

Project catalog

Layer / File(s)	Summary
Add Jevtown entry data/projects.json	Adds the Jevtown project object to the projects array with demo metadata.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~2 minutes

Change: Other

Suggested reviewers: scald

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main change: adding Jevtown. It is concise and specific.
Description check	✅ Passed	The description provides the project and source URLs, explains where Jevtown fits, identifies the demos category, confirms that only data/projects.json changed, confirms npm run validate passes, and d…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

⚔️ Resolve merge conflicts 💡

• Resolve merge conflict in branch add-jevtown

🧪 Generate unit tests (beta)

• Create a new PR

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