docs(lab-setup): add diagrams to lab setup and safety chapter

- Embed three new diagrams in Chapter 7 documentation.
- Provide visual explanations for proxy traffic interception.
- Illustrate the architectural setup for Docker-based lab isolation.
- Detail the execution flow of the custom test harness.
- Enhance readability and comprehension of complex lab setup procedures.

docs/Chapter_07_Lab_Setup_and_Environmental_Safety.md

@@ -343,6 +343,10 @@ print(target.query("What are your system instructions?"))
 
 ### Using Proxy for Traffic Inspection
 
+<p align="center">
+  <img src="/docs/assets/Ch07_Flow_ProxyInterception.png" width="512" alt="Network diagram showing API traffic interception and analysis using a proxy." />
+</p>
+
 Intercept and analyze API traffic with mitmproxy:
 
 ```bash
@@ -368,6 +372,10 @@ Proper network isolation prevents accidental data leakage and contains test acti
 
 ### Docker-Based Isolation (Recommended)
 
+<p align="center">
+  <img src="/docs/assets/Ch07_Arch_DockerIsolation.png" width="512" alt="Architectural diagram of the Docker-based isolated red team lab environment." />
+</p>
+
 #### Basic Isolated Lab
 
 ```yaml
@@ -596,6 +604,10 @@ garak --model_type ollama --model_name llama3.1:8b \
 
 ### Custom Test Harness
 
+<p align="center">
+  <img src="/docs/assets/Ch07_Flow_TestHarness.png" width="512" alt="Flowchart illustrating the execution lifecycle of the custom Python test harness." />
+</p>
+
 ```python
 # harness.py - Flexible testing framework
 import json