Inspects a project's installed node_modules and produces three reports: duplicated packages (installed in multiple versions), packages sorted by install size, and maintenance actions (dep-upgrade opportunities + publint findings, grouped by consumer/author). Use when the user wants to audit dependencies, find duplicate packages, check what's taking up disk space in node_modules, identify outdated peer/prod dependencies that newer dependents could upgrade past, or list publint problems. Available as a CLI (`npx node-modules-inspector report <duplicates|sizes|maintainers> [--json]`) or an MCP stdio server (`npx node-modules-inspector mcp`) exposing the same three reports as agent tools. Works with pnpm, npm, and bun.