Add CTFd.pages.challenge.getSolution and CTFd.pages.challenge.checkSolution

[ColdHeat]

• Add CTFd.pages.challenge.getSolution
• Add CTFd.pages.challenge.checkSolution

[Copilot]

Pull Request Overview

This PR adds two new exported functions to the challenge pages API: getSolution and checkSolution. These functions enable fetching challenge solutions via API and determining whether the UI should check for a solution based on solution state and submission status.

Key Changes:

• Added getSolution function to fetch challenge solutions from the API
• Added checkSolution function to determine if the UI should retrieve a solution based on state
• Exposed both functions through the main API surface in main.js

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
pages/challenge.js	Implements getSolution and checkSolution functions with API fetching and conditional logic
main.js	Exports new functions and adds checkSolution hook to _functions.challenge

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Inconsistent equality operators: use strict equality (===) for solutionState comparisons on line 154, matching the strict equality used for submissionStatus on line 156.

Suggested change

	if (solutionState == "hidden" || solutionState == "visible") {
	return false;
	} else if (solutionState == "solved" && submissionStatus === "correct") {
	if (solutionState === "hidden" || solutionState === "visible") {
	return false;
	} else if (solutionState === "solved" && submissionStatus === "correct") {