Ppis

[Girish0902]

What does this PR do?

This PR adds a new project called Public Policy Impact Simulator, an educational policy-analysis tool that enables users to explore the effects of government decisions on society and the economy. Users can modify policy variables and observe projected impacts on economic indicators, public welfare, and social outcomes through interactive simulations.

Type of change

• New project under Projects/
• Fix or improvement to an existing project
• Showcase page / workflow / docs change

Checklist

• I read [CONTRIBUTING.md](../CONTRIBUTING.md).
• My folder name is Title Case with real spaces.
• My folder contains README.md, project.json and index.html.
• project.json is valid and title matches the folder name.
• The project opens by double-clicking index.html — no build step.
• No console errors, no tracking scripts, no third-party iframes.
• I respect the [Code of Conduct](../CODE_OF_CONDUCT.md).

Linked issue

Closes #1160

[cu-sanjay]

PR Validation — Checks Failed ❌

The following issues must be resolved before this PR can be merged.
Fix them in your branch and push a new commit — this check will re-run automatically.

• This PR touches 2 different project folders. A single PR must contain exactly one new project.
• This PR contains 12 files. The maximum for a single project submission is 6 files. Remove any files that are not part of the project.

Refer to CONTRIBUTING.md for the full submission requirements.