Added typical workflow from Class POV

notes/arch.md

@@ -93,6 +93,37 @@ Workflow
     '                                       '
 
 
+Flow
+----
+
+     User  :  App  :  Repo :  STM  :  STS
+    =======================================
+       |       |       |       |       |
+       |       o ----> |       |       |
+       |       | init  |       |       |
+       o ----> |       |       |       |
+       | GET   |       |       |       |
+       | /rc?a o ----> |       |       |
+       | =b    | load  |       |       |
+       |       | <---- o       |       |
+       |       |  stm  |       |       |
+       |       |       |       |       |
+       |       o ------------> |       |
+       |       |       | gen(a |       |
+       |       |       | =b)   |       |
+       |       | <------------ o       |
+       |       |       | sts   |       |
+       |       |       |       |       |
+       |       o --------------------> |
+       |       |       |       | rndr  |
+       |       | <-------------------- o
+       |       |       |       | html  |
+       |       |       |       |       |
+       | <---- o       |       |       |
+       |  html |       |       |       |
+       |       |       |       |       |
+    =======================================
+
 
 Service API
 -----------