Fix Solana payment signing under Node/undici

dist/cli.js

@@ -52766,7 +52766,6 @@ function createHttpTransport(config) {
         ...customHeaders,
         // Keep these headers lowercase so they will override any user-supplied headers above.
         accept: "application/json",
-        "content-length": body.length.toString(),
         "content-type": "application/json; charset=utf-8"
       },
       method: "POST",

dist/index.js

@@ -52634,7 +52634,6 @@ function createHttpTransport(config) {
         ...customHeaders,
         // Keep these headers lowercase so they will override any user-supplied headers above.
         accept: "application/json",
-        "content-length": body.length.toString(),
         "content-type": "application/json; charset=utf-8"
       },
       method: "POST",

scripts/smoke-dist.mjs

@@ -50,6 +50,13 @@ for (const entry of ["index.js", "cli.js", "router/index.js"]) {
         `the @blockrun/llm back-import is missing or broken.`,
     );
   }
+  if (/"content-length"\s*:\s*body\.length\.toString\(\)/.test(source)) {
+    failures.push(
+      `dist/${entry} contains @solana/rpc-transport-http's manual content-length header — ` +
+        `Node/undici can reject that header during Solana x402 payment signing in ` +
+        `OpenClaw-managed runtime paths.`,
+    );
+  }
   if (source.length > MAX_BUNDLE_BYTES) {
     failures.push(
       `dist/${entry} is ${(source.length / 1024 / 1024).toFixed(1)}MB, over the ` +

tsup.config.ts

@@ -1,7 +1,31 @@
+import { readFileSync } from "node:fs";
 import { builtinModules } from "node:module";
 import { fileURLToPath } from "node:url";
 import { defineConfig } from "tsup";
 
+const stripSolanaRpcContentLength = {
+  name: "strip-solana-rpc-content-length",
+  setup(build) {
+    build.onLoad(
+      { filter: /[\\/]@solana[\\/]rpc-transport-http[\\/]dist[\\/]index\.node\.mjs$/ },
+      (args) => {
+        const source = readFileSync(args.path, "utf8");
+        const contents = source.replace(/\n\s+"content-length": body\.length\.toString\(\),/, "");
+        if (contents === source) {
+          throw new Error(
+            `strip-solana-rpc-content-length matched nothing in ${args.path} — ` +
+              `@solana/rpc-transport-http changed shape. Update the pattern; do not ship.`,
+          );
+        }
+        return {
+          contents,
+          loader: "js",
+        };
+      },
+    );
+  },
+};
+
 export default defineConfig({
   entry: ["src/index.ts", "src/cli.ts", "src/router/index.ts"],
   format: ["esm"],
@@ -12,6 +36,7 @@ export default defineConfig({
   splitting: false,
   noExternal: [/.*/],
   external: [...builtinModules.flatMap((m) => [m, `node:${m}`])],
+  esbuildPlugins: [stripSolanaRpcContentLength],
   esbuildOptions(options) {
     // We and @blockrun/llm depend on each other, and `noExternal` inlines it. Its
     // `import { route, ... } from "@blockrun/clawrouter"` therefore resolves through