Switch README diagrams to vertical layout

infra-run/ansible/inventory/group_vars/README.md

@@ -5,7 +5,7 @@ This folder is reserved for shared Ansible variables applied to inventory groups
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["group_vars"] --> B["Environment defaults"]
   A --> C["Role parameters"]
   A --> D["Shared operational values"]

infra-run/ansible/inventory/host_vars/README.md

@@ -5,7 +5,7 @@ This folder is intended for host-specific Ansible variables. It complements `gro
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["host_vars"] --> B["Host A overrides"]
   A --> C["Host B overrides"]
   A --> D["Per-node secrets or tuning"]

infra-run/ansible/tests/README.md

@@ -5,7 +5,7 @@ This directory is reserved for validation of Ansible content. It represents the
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["tests"] --> B["Syntax checks"]
   A --> C["Molecule or scenario tests"]
   A --> D["Post-run validation"]

infra-run/scripts/python/README.md

@@ -5,7 +5,7 @@ This directory is reserved for Python helpers that may later complement the Bash
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["python"] --> B["Future reporting utilities"]
   A --> C["Parsers"]
   A --> D["Automation helpers"]

labs/ci-cd/README.md

@@ -5,7 +5,7 @@ This folder is intended for CI/CD experiments such as pipeline layouts, validati
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["ci-cd"] --> B["Build"]
   A --> C["Test"]
   A --> D["Package"]

labs/docker/README.md

@@ -5,7 +5,7 @@ This folder is reserved for Docker-focused lab work. It is intended for image bu
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["docker"] --> B["Dockerfiles"]
   A --> C["Compose stacks"]
   A --> D["Container debugging"]

labs/kubernetes/README.md

@@ -5,7 +5,7 @@ This folder is intended for Kubernetes lab work such as manifests, troubleshooti
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["kubernetes"] --> B["Workloads"]
   A --> C["Services"]
   A --> D["Ingress and networking"]

labs/networking/README.md

@@ -5,7 +5,7 @@ This folder is reserved for networking-focused exercises. It can hold examples a
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["networking"] --> B["Routing"]
   A --> C["DNS"]
   A --> D["Firewall and ports"]

labs/terraform/README.md

@@ -5,7 +5,7 @@ This folder is intended for Terraform experiments and infrastructure-as-code pra
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["terraform"] --> B["Modules"]
   A --> C["Environment configs"]
   A --> D["Plan and apply workflows"]

platform-projects/clustering/README.md

@@ -5,7 +5,7 @@ This folder is reserved for clustering-focused platform work. It is meant for hi
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["clustering"] --> B["Quorum"]
   A --> C["Failover"]
   A --> D["Service groups"]

platform-projects/elk-log-analysis/README.md

@@ -5,7 +5,7 @@ This folder is intended for Elastic Stack style log-analysis work. It can hold e
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["elk-log-analysis"] --> B["Ingest"]
   A --> C["Parse"]
   A --> D["Search"]

platform-projects/monitoring-zabbix/README.md

@@ -5,7 +5,7 @@ This folder is reserved for monitoring and alerting work centered on Zabbix-styl
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["monitoring-zabbix"] --> B["Hosts"]
   A --> C["Templates"]
   A --> D["Triggers"]

platform-projects/storage/README.md

@@ -5,7 +5,7 @@ This folder is intended for storage-oriented platform topics. It can hold higher
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["storage"] --> B["Capacity planning"]
   A --> C["Filesystem expansion"]
   A --> D["Block device management"]

platform-projects/virtualization/README.md

@@ -5,7 +5,7 @@ This folder is reserved for virtualization platform topics. It is intended for w
 ## Diagram
 
 ```mermaid
-flowchart LR
+flowchart TD
   A["virtualization"] --> B["Hypervisors"]
   A --> C["Guests"]
   A --> D["Resource planning"]