Add README files and diagrams across repository

README.md

@@ -2,6 +2,31 @@
 
 This repository demonstrates real-world Linux infrastructure and operations experience through sanitized scripts, runbooks, and project structure. It focuses on production operations, incident response, troubleshooting, automation, and enterprise infrastructure patterns.
 
+## Repository Diagram
+
+```mermaid
+flowchart TD
+  A["portfolio"] --> B["infra-run"]
+  A --> C["platform-projects"]
+  A --> D["labs"]
+  B --> B1["ansible"]
+  B --> B2["docs"]
+  B --> B3["runbooks"]
+  B --> B4["scripts"]
+  B4 --> B41["bash"]
+  B4 --> B42["python"]
+  C --> C1["storage"]
+  C --> C2["clustering"]
+  C --> C3["monitoring-zabbix"]
+  C --> C4["virtualization"]
+  C --> C5["elk-log-analysis"]
+  D --> D1["docker"]
+  D --> D2["kubernetes"]
+  D --> D3["terraform"]
+  D --> D4["networking"]
+  D --> D5["ci-cd"]
+```
+
 ## Core Project
 
 ### infra-run