docs(init): validate v0.6 specification

---ci---
project: orca
phase: 0
milestone: v0.6
status: specify
---/ci---

.ciagent/config.json

@@ -5,7 +5,7 @@
       "slug": "orca",
       "name": "Orca",
       "description": "Offline/CLI-first orchestration engine (Orca) — Nomad-inspired, far simpler than Kubernetes",
-      "milestone": "v0.5",
+      "milestone": "v0.6",
       "phase": 0,
       "milestone_type": "feature",
       "default_branch": "main",