Update documentation and remove redundant section

AGENTS.md

@@ -156,29 +156,7 @@ ______________________________________________________________________
 
 ### General structure
 
-The repository contains a Python package called Cachier that provides persistent function caching with several backends:
-
-cachier/
-├── src/cachier/ # Main library code
-│ ├── __init__.py
-│ ├── core.py # Decorator logic, backend selection
-│ ├── cores/ # Backend implementations
-│ │ ├── pickle.py
-│ │ ├── memory.py
-│ │ ├── mongo.py
-│ │ ├── sql.py
-│ │ ├── redis.py
-│ │ └── base.py
-│ ├── config.py # Global/default config
-│ ├── \_types.py # Type definitions
-│ ├── _version.py
-│ └── __main__.py
-├── tests/ # Pytest-based tests, backend-marked
-│ ├── test_\*.py
-│ └── \*\_requirements.txt # Backend-specific test requirements
-├── examples/ # Usage examples
-├── README.rst # Main documentation
-└── ...
+For an up-to-date overview of the repository layout, see `README.rst` in the project root.
 
 ### Key functionality
 

CLAUDE.md

@@ -158,6 +158,7 @@ ______________________________________________________________________
 
 The repository contains a Python package called Cachier that provides persistent function caching with several backends:
 
+```
 cachier/
 ├── src/cachier/ # Main library code
 │ ├── __init__.py
@@ -179,6 +180,7 @@ cachier/
 ├── examples/ # Usage examples
 ├── README.rst # Main documentation
 └── ...
+```
 
 ### Key functionality