Code Quality and Linting

**Difficulty:** ⭐ (Easy)
**Dependencies:** None
**Component:** Code Quality

**Description:**
Establish a robust code quality infrastructure to ensure consistency and maintainability across the entire codebase. This includes setting up golangci-lint with custom rules tailored to the project, implementing automated pre-commit hooks to catch issues before they reach the repository, and configuring comprehensive formatting checks. Additionally, integrate security scanning tools like gosec to identify potential vulnerabilities early in the development cycle, implement dependency vulnerability scanning with tools like Dependabot or Snyk, and add code complexity analysis to identify areas that may need refactoring. This foundation ensures all subsequent code meets high quality standards.

**Acceptance Criteria:**
- [ ] Install and configure golangci-lint
- [ ] Add pre-commit hooks
- [ ] Implement code formatting checks
- [ ] Add basic security scanning
- [ ] Set up dependency vulnerability scanning
- [ ] Add code complexity analysis

**Why First:** Establishes code quality standards for all subsequent development.

Start by reviewing the repository layout and existing Go and JavaScript configuration; the issue names no target files, tests, or CI entry points. Then map the requested golangci-lint, pre-commit, formatting, gosec, dependency scanning, and complexity checks to repository configuration, with completion measured against all six acceptance criteria.

Written by the indexing model from the issue text.