docs: balking, bloc, bridge diagrams

balking/README.md

@@ -29,6 +29,10 @@ Wikipedia says
 
 > The balking pattern is a software design pattern that only executes an action on an object when the object is in a particular state. For example, if an object reads ZIP files and a calling method invokes a get method on the object when the ZIP file is not open, the object would "balk" at the request.
 
+Flowchart
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+![Balking flowchart](./etc/balking-flowchart.png)
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 ## Programmatic Example of Balking Pattern in Java
 
 This example demonstrates the Balking Pattern in a multithreaded Java application, highlighting state management and concurrency control. The Balking Pattern is exemplified by a washing machine's start button that initiates washing only if the machine is idle. This ensures state management and prevents concurrent issues.