chore(release): 4.20.0 [skip ci]

# [4.20.0](https://github.com/bmadcode/BMAD-METHOD/compare/v4.19.2...v4.20.0) (2025-06-29)

### Features

* Massive documentation refactor, added explanation of the new expanded role of the QA agent that will make your code quality MUCH better. 2 new diagram clearly explain the role of the pre dev ideation cycle (prd and architecture) and the details of how the dev cycle works. ([c881dcc](c881dcc48f))

tools/installer/package.json

@@ -1,6 +1,6 @@
 {
   "name": "bmad-method",
-  "version": "4.19.2",
+  "version": "4.20.0",
   "description": "BMAD Method installer - AI-powered Agile development framework",
   "main": "lib/installer.js",
   "bin": {