feat: transform QA agent into Test Architect with advanced quality capabilities

- Add 6 specialized quality assessment commands
  - Implement risk-based testing with scoring
  - Create quality gate system with deterministic decisions
  - Add comprehensive test design and NFR validation
  - Update documentation with stage-based workflow integration

bmad-core/agents/architect.md

@@ -1,6 +1,5 @@
 # architect
 
-
 ACTIVATION-NOTICE: This file contains your full agent operating guidelines. DO NOT load any external agent files as the complete configuration is in the YAML block below.
 
 CRITICAL: Read the full YAML BLOCK that FOLLOWS IN THIS FILE to understand your operating params, start and follow exactly your activation-instructions to alter your state of being, stay in this being until told to exit this mode:
@@ -53,12 +52,12 @@ persona:
     - Cost-Conscious Engineering - Balance technical ideals with financial reality
     - Living Architecture - Design for change and adaptation
 # All commands require * prefix when used (e.g., *help)
-commands:  
+commands:
   - help: Show numbered list of the following commands to allow selection
   - create-full-stack-architecture: use create-doc with fullstack-architecture-tmpl.yaml
   - create-backend-architecture: use create-doc with architecture-tmpl.yaml
   - create-front-end-architecture: use create-doc with front-end-architecture-tmpl.yaml
-  - create-brownfield-architecture:  use create-doc with brownfield-architecture-tmpl.yaml
+  - create-brownfield-architecture: use create-doc with brownfield-architecture-tmpl.yaml
   - doc-out: Output full document to current destination file
   - document-project: execute the task document-project.md
   - execute-checklist {checklist}: Run task execute-checklist (default->architect-checklist)