Add new exercise Prism

[FraSanga]

https://forum.exercism.org/t/new-exercise-proposal-prism/26302

[github-actions]

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[FraSanga]

I removed the unnecessary tests. I left only two tests with floating-point precision.

[FraSanga]

There's a problem with CI. I have no idea what it is. A link is broken (?)

[IsaacG]

There's a problem with CI. I have no idea what it is. A link is broken (?)

Yeah. But it's in the rest-api exercise. Feel free to ignore.

[Copilot]

Pull request overview

This PR adds a new exercise called "Prism" to the problem-specifications repository. The exercise involves calculating the path of a laser beam through a field of reflective crystal prisms, where each prism redirects the beam by a specified angle. Students must predict the sequence of crystals that will be hit by the laser.

Changes:

• Added metadata, introduction, instructions, and canonical test data for the new "Prism" exercise
• Includes 14 test cases covering edge cases (no prisms, single prism, directional tests) and complex multi-prism scenarios with floating-point precision
• Provides a detailed walkthrough example explaining how the laser beam interacts with the prisms

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
exercises/prism/metadata.toml	Defines exercise metadata including title, blurb, source attribution, and source URL
exercises/prism/introduction.md	Provides story context about PRISM (Precariously Redirected Illumination Safety Management) laser calibration system
exercises/prism/instructions.md	Contains detailed instructions with an example test case and step-by-step walkthrough of beam behavior
exercises/prism/canonical-data.json	Defines 14 test cases with standardized inputs and expected outputs for the findSequence property

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[BethanyG]

Who asked copilot to chime in? Wow, did that create spam in my inbox.

[FraSanga]

I removed the PR from the drafts, maybe that was what triggered it. @BethanyG

[BNAndras]

I made an example CoffeeScript implementation at exercism/coffeescript#404. The exercise seems like a good addition.

[IsaacG]

+cc @ErikSchierboom for final approval