Issue Description

The repository needs comprehensive tool configuration files to enable consistent code quality checks, security scanning, and development practices across all contributors and CI/CD pipelines.

Files needed:

• .cspell.json and custom dictionaries (.cspell/)
• .markdownlint.json and .markdownlint-cli2.jsonc
• .gitleaks.toml and .checkov.yaml
• scripts/linting/PSScriptAnalyzer.psd1
• scripts/linting/markdown-link-check.config.json

Additional Context

Priority: Merge Priority 1 (Wave 1) - No dependencies

These configuration files are required by scripts (Issues #5, #6) and workflows (Issues #10, #11) in subsequent PRs.