Update example output comments

Add `Output` comments to the example files to reflect the actual output
of the programs. This helps with verifying correctness and understanding
example behavior.

examples/optimizer_collision_repro.myc

@@ -1,5 +1,6 @@
 ;; Benchmark: 93ns
 ;; Benchmark-Repeat: 21646
+;; Output: 13
 (do
   (macro wrap [f] `(fn [x] (~f x)))
 

examples/optimizer_purity.myc

@@ -1,5 +1,6 @@
 ;; Benchmark: 92ns
 ;; Benchmark-Repeat: 21507
+;; Output: 31.41592653589793
 (do
   (def area (fn [x] (* PI x)))
   (area 10)

examples/optimizer_repro.myc

@@ -1,5 +1,6 @@
 ;; Benchmark: 172ns
 ;; Benchmark-Repeat: 11766
+;; Output: [42 150]
 (do
   ;; 1. Provokation Stack-Gap (bei Optimization Level 2)
   (def result 

examples/record_specialization_test.myc

@@ -4,6 +4,8 @@
 ;; Dank der neuen Spezialisierung wird hierfür im Hintergrund 
 ;; eine SharedRecordSeries mit SoA-Layout (Float-Puffer für mid und range) erstellt.
 
+;; Output: PipelineNode[last: Some({:mid 101.35623617501585, :range 0.9314056584827455})]
+
 (do
   (def ohlc_stream (create-random-ohlc 42 10))
 

examples/tuple-struct.myc

@@ -1,5 +1,6 @@
 ;; Benchmark: 890ns
 ;; Benchmark-Repeat: 2258
+;; Output: ["Symbol:" "btc" "field:" :close "id:" "cls"]
 (do
      (def p (fn [conf]
        (do