====== 5.4 Developer Handbook Before Coding ====== [[fxdemo:04-part:05-phase-0-implementation-principles:start | Go To Phase 0 Implementation Principles ]] The Phase 0 Developer Handbook precedes coding. Reviewers must not accept Phase 0 implementation code, generated code, scripts, configuration artifacts, or repository contributions until the Developer Handbook defines the applicable development conventions. The handbook must define file-header rules, generated-file markings, naming conventions, coding style, logging conventions, exception-handling patterns, repository workflow, review expectations, and [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|traceability]] conventions. This principle prevents implementation work from starting before the team agrees on the development discipline. It also ensures that Phase 0 code supports architectural traceability from the beginning rather than adding it after implementation. ---- © 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.