chore(bmad): BMAD v6.10 Setup (bmm, de) + PRD/Addendum/Projekt-Kontext (adversarial validiert, revidiert)

.claude/skills/bmad-prfaq/bmad-manifest.json

@@ -0,0 +1,16 @@
+{
+  "module-code": "bmm",
+  "capabilities": [
+    {
+      "name": "working-backwards",
+      "menu-code": "WB",
+      "description": "Produces battle-tested PRFAQ document and optional LLM distillate for PRD input.",
+      "supports-headless": true,
+      "phase-name": "1-analysis",
+      "preceded-by": ["brainstorming", "perform-research"],
+      "followed-by": ["create-prd"],
+      "is-required": false,
+      "output-location": "{planning_artifacts}"
+    }
+  ]
+}