Core-13 pure: add CI workflows, VM e2e tests, LLVM parity bridge (minimal); do not touch private docs

benchmarks/bench_box_create_destroy.nyash

@@ -0,0 +1,17 @@
+// Interpreter-level microbench: Box create + drop inside loop
+static box Main {
+  main() {
+    local i = 0
+    local total = 0
+    loop(i < 1000000) { // 1e6 iterations
+      {
+        // tmp goes out of scope each iteration
+        local tmp = new StringBox("x")
+        total = total + tmp.length()
+      }
+      i = i + 1
+    }
+    return total
+  }
+}
+

benchmarks/bench_box_create_destroy_small.nyash

@@ -0,0 +1,16 @@
+// Interpreter-level microbench: Box create + drop (small loops for time-boxed runs)
+static box Main {
+  main() {
+    local i = 0
+    local total = 0
+    loop(i < 10000) { // 1e4 iterations
+      {
+        local tmp = new StringBox("x")
+        total = total + tmp.length()
+      }
+      i = i + 1
+    }
+    return total
+  }
+}
+

benchmarks/bench_method_call_only.nyash

@@ -0,0 +1,14 @@
+// Interpreter-level microbench: method call on preallocated Box
+static box Main {
+  main() {
+    local i = 0
+    local s = new StringBox("nyash")
+    local total = 0
+    loop(i < 2000000) { // 2e6 method calls
+      total = total + s.length()
+      i = i + 1
+    }
+    return total
+  }
+}
+

benchmarks/bench_method_call_only_small.nyash

@@ -0,0 +1,13 @@
+// Interpreter-level microbench: method call only (small loop for time-boxed runs)
+static box Main {
+  main() {
+    local i = 0
+    local s = new StringBox("nyash")
+    local total = 0
+    loop(i < 5000) { // 5e3 method calls per run (faster per-run)
+      total = total + s.length()
+      i = i + 1
+    }
+    return total
+  }
+}