the eight remaining area pages Core Concepts, Data and Stores, SQL Databases, Communication, AI and LLM, Workflow and Background Jobs, Security, Web UI, Desktop XAML. Written to guide rather than catalogue: each page opens with what you would do, not with how many projects exist. Code was run before being written down - the store, ordering, serialization, workflow and job examples all come from a harness that executes them against the current framework. Carries the traps forward as warnings where a reader will hit them rather than burying them: PrecisionField without ScaleField truncating money, plain DateTime being a wall clock, the schema being created but never altered, bulk Read(filter) returning a collection, all-rows writes being refused, tenant wrappers failing open, and the generated token files being outputs.