Unify benchmarkVersion with package.json version field

[Copilot]

This PR consolidates version management by replacing hardcoded benchmarkVersion values with dynamic reading from the package.json version field, addressing the issue of having two sources of version information that could lead to inconsistencies.

Problem

The codebase had hardcoded benchmarkVersion: "1.0.0" values scattered across multiple files:

// In reporter.ts and leaderboard-generator.ts
metadata: {
    // ...
    benchmarkVersion: "1.0.0"  // Hardcoded!
}

This created maintenance issues:

• Multiple places to update when bumping versions
• Risk of missed updates leading to inconsistencies
• Duplicate version management alongside package.json

Solution

Added version field to package.json:

{
  "name": "ts-bench",
  "version": "1.0.0",
  // ...
}

Created dynamic version utility:

// src/utils/package-version.ts
export async function getPackageVersion(): Promise<string> {
    // Reads from package.json with fallback to "1.0.0"
}

Replaced all hardcoded values:

• BenchmarkReporter.generateBasicJSONData() now reads version dynamically
• BenchmarkReporter.saveResult() now reads version dynamically
• LeaderboardGenerator.generateLeaderboardData() now reads version dynamically

Benefits

✅ Single source of truth - Version managed only in package.json
✅ Automatic consistency - All benchmark outputs use the same version
✅ Simplified maintenance - Version updates happen in one place
✅ Backward compatibility - Existing data structures unchanged
✅ Robust fallback - Graceful handling if package.json unavailable

The implementation includes multiple path resolution strategies and error handling to ensure reliability across different execution contexts.

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[cursor]

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[cursor]

Bug: Incorrect Path in getPackageVersion Function

The getPackageVersion function includes a path join(currentDir, '../../../package.json') that's intended for src/utils/. This path incorrectly navigates one directory above the project root, rather than to the project root. While other fallbacks prevent a functional issue, this path is logically incorrect.