feat: initial bootstrap — structure, task_brief, blackboard, adapter bases, escalation, prompts

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

config/role_registry.yaml

@@ -0,0 +1,34 @@
+t1:
+  default: agents/strategy/nexus-strategy.md
+
+t2:
+  backend:  agents/engineering/engineering-software-architect.md
+  frontend: agents/engineering/engineering-software-architect.md
+  infra:    agents/engineering/engineering-devops-automator.md
+  data:     agents/engineering/engineering-data-engineer.md
+  default:  agents/engineering/engineering-software-architect.md
+
+t3:
+  backend:  agents/engineering/engineering-senior-developer.md
+  frontend: agents/engineering/engineering-senior-developer.md
+  infra:    agents/engineering/engineering-sre.md
+  default:  agents/engineering/engineering-senior-developer.md
+
+t4:
+  frontend:  agents/engineering/engineering-frontend-developer.md
+  backend:   agents/engineering/engineering-backend-architect.md
+  database:  agents/engineering/engineering-database-optimizer.md
+  devops:    agents/engineering/engineering-devops-automator.md
+  mobile:    agents/engineering/engineering-mobile-app-builder.md
+  ai:        agents/engineering/engineering-ai-engineer.md
+  security:  agents/engineering/engineering-security-engineer.md
+  docs:      agents/engineering/engineering-technical-writer.md
+  default:   agents/engineering/engineering-senior-developer.md
+
+t5:
+  code:        agents/engineering/engineering-code-reviewer.md
+  integration: agents/testing/testing-reality-checker.md
+  api:         agents/testing/testing-api-tester.md
+  performance: agents/testing/testing-performance-benchmarker.md
+  security:    agents/engineering/engineering-security-engineer.md
+  default:     agents/engineering/engineering-code-reviewer.md