chore(git): purge tracked bytecode and optimize .gitignore

- Fixed .gitignore to correctly handle __pycache__ even when inside whitelisted directories (like tests/).
- Moved pycache ignore patterns to the end of the file to ensure they take absolute precedence over any directory-level whitelists.
- Purged all previously tracked .pyc and __pycache__ files from the git index.
- Cleaned up .hypothesis and .pytest_cache artifacts.

This enforces 'Militärische Git-Disziplin' (Rule 7) and keeps the repo clean of environment-specific junk.

.gitignore

@@ -17,8 +17,6 @@
 !tests/e2e/fixtures/*.jpg
 !tests/e2e/fixtures/*.json
 logs/
-*.pyc
-__pycache__/
 .DS_Store
 crashes
 accounts
@@ -53,3 +51,12 @@ coverage.xml
 
 # Local diagnostic traces
 debug/
+
+# Bytecode & Cache (Enforce at bottom to override whitelists)
+__pycache__/
+*.pyc
+**/*.pyc
+**/*.pyo
+**/*.pyd
+.pytest_cache/
+.hypothesis/