diagrams and simulation

docs/00-series-overview.md

@@ -71,7 +71,7 @@ The emphasis is always on understanding the underlying design rather than memori
 
 ## Repository Structure
 
-The structure below shows the planned repository. The `diagrams/` and `examples/` directories will be added as the practical material develops.
+The structure below includes the current documentation, PlantUML diagrams, and A/B simulation. Hardware demonstrations and later chapters will be added as the practical material develops.
 
 ```text
 ota-reference-design/
@@ -86,12 +86,12 @@ ota-reference-design/
 │   ├── ...
 │
 ├── diagrams/
-│   └── plantuml/
+│   ├── plantuml/
+│   └── rendered/
 │
 ├── examples/
-│   ├── raspberry-pi/
-│   ├── qemu/
 │   └── simulations/
+│       └── ab-trial-boot/
 │
 ├── adr/
 │   ├── ADR-001-repository-name.md
@@ -196,6 +196,8 @@ Where possible, theoretical discussions are accompanied by practical material, i
 
 The objective is to connect high-level architecture with practical implementation.
 
+Available now: [PlantUML diagrams and SVG previews](../diagrams/readme.md) and a [Python A/B trial boot simulation](../examples/simulations/ab-trial-boot/readme.md). Raspberry Pi and QEMU demonstrations are planned.
+
 ---
 
 ## Intended Audience