Add initial Pico-8 cartridges for testing

- Created test_cart.p8 with basic drawing functionality and a print statement.
- Created test_unix.p8 with a simple initialization function.

scripts/nodes/library/reroute.js

@@ -0,0 +1,53 @@
+import { createNodeModule } from "../nodeTypes.js";
+
+/**
+ * A transparent pass-through node for redirecting data wires.
+ * Emits no code on its own — the value resolves directly through the input.
+ */
+export const rerouteNode = createNodeModule(
+  {
+    id: "reroute",
+    title: "Reroute",
+    category: "Utility",
+    description: "Redirects a data wire without affecting the value.",
+    searchTags: ["reroute", "redirect", "wire", "relay", "pass", "through"],
+    inputs: [
+      { id: "value", name: "", direction: "input", kind: "any" },
+    ],
+    outputs: [
+      { id: "value", name: "", direction: "output", kind: "any" },
+    ],
+    properties: [],
+  },
+  {
+    evaluateValue: ({ resolveValueInput }) => {
+      return resolveValueInput("value", "nil");
+    },
+  }
+);
+
+/**
+ * A transparent pass-through node for redirecting exec wires.
+ * Emits no code on its own — execution continues directly to the next node.
+ */
+export const rerouteExecNode = createNodeModule(
+  {
+    id: "reroute_exec",
+    title: "Reroute",
+    category: "Utility",
+    description: "Redirects an exec wire without generating any code.",
+    searchTags: ["reroute", "redirect", "exec", "wire", "relay", "pass", "through"],
+    inputs: [
+      { id: "exec_in", name: "", direction: "input", kind: "exec" },
+    ],
+    outputs: [
+      { id: "exec_out", name: "", direction: "output", kind: "exec" },
+    ],
+    properties: [],
+  },
+  {
+    emitExec: ({ emitNextExec }) => {
+      return emitNextExec("exec_out");
+    },
+  }
+);