vm: stabilize plugin-first VM output + TLV decode\n\n- runtime(plugin_loader_v2): decode plugin TLV generically (tag 1/2/3/5/6/7/8/9)\n- vm(print): coerce plugin-backed results via semantics (i64/string) for consistent output\n- vm(plugin_invoke): add decode debug; align return handling\n- bin/lib: expose runner_plugin_init in bin; fix call sites to init plugin host\n- tools(build_aot.sh): disable legacy-forbid diag and toml env for object emit\n- add VM/JIT smoke scripts (counter, filebox, jit-compare)\n\nResult: VM plugin smokes PASS; jit-direct compare PASS. AOT emit still needs CLIF block init tweak.

apps/tests/mir-compare-multi/main.nyash

@@ -0,0 +1,14 @@
+// mir-compare-multi - exercise Compare ops under JIT-direct
+
+static box Main {
+    main() {
+        local c = 0
+        if 1 < 2 { c = c + 1 }    // true
+        if 2 < 1 { c = c + 10 }   // false (unchanged)
+        if 5 == 5 { c = c + 100 } // true
+        if 7 != 7 { c = c + 1000 } // false
+        // Expect 1 + 100 = 101
+        return c
+    }
+}
+

apps/tests/vm-plugin-smoke-counter/main.nyash

@@ -0,0 +1,12 @@
+// vm-plugin-smoke-counter
+// Purpose: Verify VM uses plugin boxes deterministically (CounterBox)
+// Expected: returns 1 after a single inc()
+
+// Note: VM runner in this branch initializes plugin host and prefers
+// plugin implementations for core boxes. CounterBox is provided by
+// libnyash_counter_plugin per nyash.toml.
+
+local c = new CounterBox()
+c.inc()
+return c.get()
+

apps/tests/vm-plugin-smoke-filebox/main.nyash

@@ -0,0 +1,12 @@
+// vm-plugin-smoke-filebox
+// Purpose: Verify VM uses FileBox plugin to open/read a file.
+// Script expects the test file to be created by the runner script.
+
+local path = "tmp/vm_filebox_smoke.txt"
+local f = new FileBox()
+f.open(path, "r")
+local s = f.read()
+f.close()
+// Return the length of read content to avoid printing large buffers
+return s.length()
+