chore: import upstream snapshot with attribution

scripts/embed-runtime-sources.mts

@@ -0,0 +1,58 @@
+#!/usr/bin/env -S node --experimental-strip-types --disable-warning=ExperimentalWarning
+import fs from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const outPath = path.join(repoRoot, "native/zero-c/src/embedded_runtime_sources.inc");
+const inputs = [
+  ["zero_embedded_zero_runtime_h", "native/zero-c/include/zero_runtime.h"],
+  ["zero_embedded_zero_runtime_c", "native/zero-c/runtime/zero_runtime.c"],
+  ["zero_embedded_zero_http_curl_c", "native/zero-c/runtime/zero_http_curl.c"],
+];
+
+function chunkText(text) {
+  const chunks = [];
+  let current = "";
+  for (const line of text.match(/[^\n]*\n|[^\n]+$/g) || []) {
+    if (current && JSON.stringify(current + line).length > 3000) {
+      chunks.push(current);
+      current = "";
+    }
+    if (JSON.stringify(line).length <= 3000) {
+      current += line;
+      continue;
+    }
+    for (let index = 0; index < line.length; index += 1400) {
+      if (current) {
+        chunks.push(current);
+        current = "";
+      }
+      chunks.push(line.slice(index, index + 1400));
+    }
+  }
+  if (current) chunks.push(current);
+  return chunks;
+}
+
+const out = [];
+out.push("/* Generated from Zero runtime sources. Run node --experimental-strip-types --disable-warning=ExperimentalWarning scripts/embed-runtime-sources.mts to refresh. */");
+out.push("#ifndef ZERO_EMBEDDED_RUNTIME_SOURCES_INC");
+out.push("#define ZERO_EMBEDDED_RUNTIME_SOURCES_INC");
+out.push("");
+
+for (const [name, relativePath] of inputs) {
+  const text = fs.readFileSync(path.join(repoRoot, relativePath), "utf8");
+  out.push(`static const char *const ${name}[] = {`);
+  for (const chunk of chunkText(text)) {
+    out.push(`  ${JSON.stringify(chunk)},`);
+  }
+  out.push("  NULL");
+  out.push("};");
+  out.push("");
+}
+
+out.push("#endif");
+out.push("");
+
+fs.writeFileSync(outPath, out.join("\n"));