Generate comprehensive database schema inventory using the database_inventory MCP tool with database_systems=["all"] and include_migrations=true for the current project directory. Discovers table and collection schemas across PostgreSQL, MySQL, MongoDB, and SQLite databases using AST parsing of ORM models (SQLAlchemy, Sequelize, Mongoose) and regex extraction of migration files (Alembic, Knex.js), extracts column/field metadata with relationships and indexes, and generates detailed database manifest with schema metadata and system breakdown.