wip update calude instructions

Author: RonnyPfannschmidt

CLAUDE.md

@@ -18,12 +18,20 @@ It provides hook specification and implementation mechanisms through a plugin ma
 - reread files that get fixed by pre-commit
 
 
+## Development process
+
+- always read `src/pluggy/*.py` to get a full picture
+- consider backward compatibility
+- always run all tests
+- always run pre-commit before try to commit
+- prefer running full pre-commit over ruff/mypy alone
+
+
+
 ## Core Architecture
 
 ### Main Components
 
-- always read all python files in `src/pluggy/ to have full context`
-
 - **PluginManager** (`src/pluggy/_manager.py`): Central registry that manages plugins and coordinates hook calls
 - **HookCaller** (`src/pluggy/_hooks.py`): Executes hook implementations with proper argument binding
 - **HookImpl/HookSpec** (`src/pluggy/_hooks.py`): Represent hook implementations and specifications