Building a Cross-Relational Search Engine in Drizzle ORM (No Hardcoded WHERE Clauses)

(This is Part 4 of my series on building scalable infrastructure. If you missed them, check out Part 1: Bridging Drizzle & TanStack, Part 2: The Engine-Adapter Pattern, and Part 3: The Dynamic Query Compiler). 📖 The Librarian, The Boxes, and The Database Imagine you walk into a massive library. You ask the librarian: "Can you give me a list of authors who have written a book with the word 'Magic' in the title?" Approach A (The Bad Way): The librarian walks into the back room, finds every single author who wrote a book with 'Magic', packs up every single book that author has ever written, and drops 50 heavy boxes on your desk. You now have to manually dig through the boxes, throwing away duplicates, just to write down the author's name. Approach B (The Smart Way): The librarian walks into the aisle, glances at the shelves, sees at least one 'Magic' book for an author, writes the author's name on a clean sheet of paper, and hands you a single piece of paper. 🛑 The Problem: We Are D