Fix: Improve RPC error handling and routing

- Changed from rpcApp.use to rpcApp.all for better route handling
- Added proper error handling with try-catch
- Return 404 for unmatched routes instead of calling next()
- Return 500 for internal server errors
- Improves RPC endpoint reliability and debugging

src/server/routes/rpc.ts

@@ -7,7 +7,8 @@ export const rpcApp = new Hono();
 
 const handler = new RPCHandler(router);
 
-rpcApp.use("/*", async (c, next) => {
+rpcApp.all("/*", async (c) => {
+  try {
     const { matched, response } = await handler.handle(c.req.raw, {
       prefix: "/rpc",
     });
@@ -16,6 +17,9 @@ rpcApp.use("/*", async (c, next) => {
       return c.newResponse(response.body, response);
     }
 
-  await next();
-  return;
+    return c.json({ error: "Not found" }, 404);
+  } catch (error) {
+    console.error("RPC Handler error:", error);
+    return c.json({ error: "Internal server error" }, 500);
+  }
 });