Refactor Examples to use assert_eq

This commit updates all example files to use `assert_eq!` for verifying
output, replacing the previous `Output:` comments. This change makes the
examples more robust and self-testing.

The benchmark results in some examples have also been slightly adjusted,
reflecting minor performance variations after the refactoring.

Additionally, a runtime panic handling mechanism has been introduced in
the VM for function calls, which improves error reporting for unexpected
panics.

examples/optimizer_repro.myc

@@ -1,24 +1,23 @@
-;; Benchmark: 102ns
-;; Benchmark-Repeat: 20685
-;; Output: [42 150]
+;; Benchmark: 196ns
+;; Benchmark-Repeat: 10532
 (do
   ;; 1. Provokation Stack-Gap (bei Optimization Level 2)
-  (def result 
-    (fn [] 
-      (do 
+  (def result
+    (fn []
+      (do
         ;; Wird entfernt, Slot 0 ist dann "leer"
-        (def unused 10) 
+        (def unused 10)
         ;; Bleibt auf Slot 1 -> Lücke!
-        (def used 42)   
+        (def used 42)
         used)))
 
   ;; 2. Provokation Inlining-Blockade
   ;; Diese Funktion wird nicht inlined, weil sie ein 'def' enthält
-  (def complex-add 
-    (fn [a] 
-      (do 
-        (def b 100) 
+  (def complex-add
+    (fn [a]
+      (do
+        (def b 100)
         (+ a b))))
 
-  [(result) (complex-add 50)]
+  (assert-eq [42 150] [(result) (complex-add 50)])
 )