🧾 Archive Brain Online: Update repo to Memory Vault role with emoji branding

Co-authored-by: blackboxprogramming <118287761+blackboxprogramming@users.noreply.github.com>

pings/README.md

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+# 📡 System Pings
+
+**Purpose:** Health snapshots, uptime, latency, status over time  
+**Updated:** 2025-11-25
+
+---
+
+## Overview
+
+This directory contains **system pings** — append-only records of health snapshots and status history.
+
+## 🧪 Invariants
+
+Every ping entry must have:
+- 🧬 **Stable ID:** `PING-YYYYMMDD-XXX`
+- ⏱️ **Timestamp:** Precise with timezone/UTC
+- 🧭 **Context tags:** env, service, region
+
+## Entry Format
+
+```markdown
+# Ping: [service-name] @ YYYY-MM-DD HH:MM:SS UTC
+
+**ID:** PING-YYYYMMDD-XXX  
+**Service:** [service-name]  
+**Env:** [production | staging]  
+**Region:** [us-east | eu-west | etc.]  
+**Status:** [healthy | degraded | down]  
+**Latency:** [ms]  
+**Uptime:** [percentage]
+
+---
+
+## Health Summary
+[Brief description of service health]
+
+## Metrics
+- Response Time: [ms]
+- Error Rate: [percentage]
+- Throughput: [requests/sec]
+
+## Notes
+[Any additional observations]
+```
+
+## File Naming
+
+Use: `YYYY-MM-DD-service-name-XXX.md`
+
+Example: `2025-11-25-blackroad-api-001.md`
+
+---
+
+*This is append-only history. Corrections are new entries that reference old ones.* 📡