feat: Demo-Examples (Python/Rust/Go/C) mit Protokoll-Templates und Restore-Skript

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

examples/python-calculator/test_calculator.py

@@ -0,0 +1,18 @@
+import pytest
+from calculator import add, subtract
+
+
+def test_add_positive():
+    assert add(2, 3) == 5
+
+def test_add_negative():
+    assert add(-1, 1) == 0
+
+def test_add_zero():
+    assert add(0, 0) == 0
+
+def test_subtract_basic():
+    assert subtract(5, 3) == 2
+
+def test_subtract_negative_result():
+    assert subtract(3, 5) == -2