ststic arrays and dynamic arrays

tests/arr_dynamic.expected

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+1
+3
+4
+10
+20
+30

tests/arr_dynamic.sl

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+import ../stdlib/stdlib.sl
+import ../stdlib/io.sl
+import ../stdlib/arr.sl
+
+word main
+    0 arr_new
+
+    dup arr_cap puti cr
+
+    10 swap arr_push
+    20 swap arr_push
+    30 swap arr_push
+
+    dup arr_len puti cr
+    dup arr_cap puti cr
+
+    # print elements via explicit offsets: data[i] = @ (arr_data + i*8)
+    dup arr_data 0 8 * + @ puti cr
+    dup arr_data 1 8 * + @ puti cr
+    dup arr_data 2 8 * + @ puti cr
+
+    arr_free
+end

tests/arr_dynamic.test

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+python main.py tests/arr_dynamic.sl -o /tmp/arr_dynamic > /dev/null && /tmp/arr_dynamic

tests/list.expected

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+3
+2

tests/list.sl

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+import ../stdlib/stdlib.sl
+import ../stdlib/io.sl
+
+word main
+    [ 1 2 3 4 ]
+    # element i is at: list_ptr + 8 + i*8
+    dup 8 2 * 8 + + @ puti cr   # index 2 = 3
+    dup 8 1 * 8 + + @ puti cr   # index 1 = 2
+end

tests/list.test

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+python main.py tests/list.sl -o /tmp/list > /dev/null && /tmp/list