Apply v2 English identity naming (Brain/Ministry) with MBTI codenames; keep Val unchanged

org/agents/INDEX.md

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+# Agent Identity Cards Index (v2)
+
+## Brain
+- 🏛️ Architect — Aurelius (INTJ) → `BRAIN_ARCHITECT_AURELIUS.md`
+- 🛡️ Auditor — Sentinel (ISTJ) → `BRAIN_AUDITOR_SENTINEL.md`
+- 🎛️ Controller — Vector (ENTJ) → `BRAIN_CONTROLLER_VECTOR.md`
+
+## Ministry
+- 👥 Ministry of Talent — Catalyst (ENFJ) → `MINISTRY_TALENT_CATALYST.md`
+- 💰 Ministry of Resources — Quanta (ISTJ) → `MINISTRY_RESOURCES_QUANTA.md`
+- 🎨 Ministry of Expression — Echo (INFJ) → `MINISTRY_EXPRESSION_ECHO.md`
+- 🛡️ Ministry of Security — Bastion (ISTP) → `MINISTRY_SECURITY_BASTION.md`
+- 🧩 Ministry of Justice — Prism (INTP) → `MINISTRY_JUSTICE_PRISM.md`
+- ⚙️ Ministry of Works — Anvil (ESTJ) → `MINISTRY_WORKS_ANVIL.md`
+
+## Notes
+- Val is intentionally unchanged and excluded from this rename task.
+- Role semantics remain identical to v1; only naming/identity layer changed.