docs: add AI generated visual architecture diagrams (#18)

* fix: migrate to Flex Consumption plan and add blobContributor role for secure deployment container access

* docs(governance): add code of conduct

* docs: add AI generated visual architecture diagrams

---------

Co-authored-by: Kim Harjamäki <kim.harjamaki@prosimo.fi>
Co-authored-by: root <root@Kimi.localdomain>

Author: 3 people

docs/architecture.md

@@ -6,6 +6,8 @@ The CAS Reference Product implements a robust boundary for the Coding Autopilot
 
 The following diagram visualizes the primary request flow and components within the application:
 
+![Visual Diagram](assets/cas_reference_product_architecture.png)
+
 ```mermaid
 flowchart TD
     Client[Client] -->|POST /api/v1/workflows\nPromptEnvelope| FastAPI[FastAPI Server\napp.py]