Refine phrasing in README by replacing "agentic approach of tool calling for context retrieval" with "agentic context retrieval"

Author: robertpiosik

README.md

@@ -36,7 +36,7 @@ With its focus on context engineering, CWC addresses pitfalls of coding agents.
 
 ### The problem
 
-We believe the **agentic approach of tool calling for context retrieval is inherently flawed**. Since the model has to first read the keyword-matched file to understand its role, **context pollution becomes inevitable**. That may make the model reason about wrong things, leading to regressions. These could be overwhelmingly hard to fix with the very approach that created them.
+We believe the **agentic context retrieval is inherently flawed**. Since the model has to first read the keyword-matched file to understand its role, **context pollution becomes inevitable**. That may make the model reason about wrong things, leading to regressions. These could be overwhelmingly hard to fix with the very approach that created them.
 
 ### The solution