This PR addresses all npm run lint issues on the main branch that were causing CI failures.

Issues Fixed

Unused Variable Errors (8 errors)

• check-documentation-links.ts: Removed unused output_format and semaphore variables, prefixed unused documentationPath parameter with _
• evaluate-readme-health.ts: Prefixed unused function parameters repoContext and projectType with _ to indicate they are intentionally unused
• readme-best-practices.ts: Removed unused readmeExists variable and fixed const declaration

Console Statement Warnings (53 warnings)

• Updated ESLint configuration to allow console statements in benchmark and script files (src/benchmarks/**/*.ts and src/scripts/**/*.ts)
• This is appropriate since these files are specifically for debugging, performance testing, and CLI output

Changes Made

1. Removed truly unused variables that serve no purpose in the code
2. Prefixed intentionally unused parameters with _ following ESLint conventions
3. Added ESLint overrides to allow console statements in appropriate file types where they are expected

Verification

• ✅ npm run lint now passes with exit code 0
• ✅ npm run build continues to work without errors
• ✅ npm run test passes all 192 tests
• ✅ npm run typecheck passes without type errors

The changes are minimal and surgical, maintaining existing functionality while ensuring code quality standards are met.

Fixes #22.

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