Architecture overview

stackchain supports four architecture values in stackchain.yaml:

Value	Layout style
`feature_first`	Layered vertical slices (data / domain / presentation)
`clean`	Same directories as feature_first; stricter conventions
`mvvm`	data / models / viewmodels / views / widgets
`mvc`	models / controllers / views / widgets

Configure with:

stackchain:
  architecture: feature_first

Feature-first lib layout with vertical slice

Shared project skeleton

Regardless of architecture, init creates:

lib/
  app/                 # app.dart, theme/, config/, router/
  core/                # network, storage, di, errors, utils, services, widgets, session
  features/<name>/
  main.dart
  bootstrap.dart
  main_dev.dart        # when flavors: true
  main_staging.dart
  main_prod.dart
.stackchain/lock.yaml

Choosing an architecture

Choose	When
Feature First	Default for most product apps; clear vertical ownership
Clean	Same structure with stricter layer discipline expectations
MVVM	ViewModels map cleanly to your UI toolkit / designers
MVC	Especially with GetX (`getx_mvc` preset)