ConfigLint

Configuration file validator supporting JSON, YAML, TOML, and INI formats. Catches syntax errors, duplicate keys, empty values, sensitive keys with plaintext values, placeholder detection (TODO, changeme, example.com), deep nesting warnings, and very long values. Auto-detects file format. Scans entire directories for config files. Scores each file A+ to F. Dark-themed HTML reports. JSON and text output. CI/CD ready — exit code 2 for invalid syntax, exit code 1 for critical issues. Zero dependencies for JSON/INI — optional PyYAML for full YAML support.