fix(registry): server.json — existing image tag v0.4.0 + stdio docker flags

server.json

@@ -2,7 +2,7 @@
   "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
   "name": "io.github.rustok-org/rustok-wallet",
   "description": "Self-custody Ethereum agent wallet (MCP/stdio). Keys stay in a local Docker volume.",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "websiteUrl": "https://github.com/rustok-org/mcp",
   "repository": {
     "url": "https://github.com/rustok-org/mcp",
@@ -11,13 +11,28 @@
   "packages": [
     {
       "registryType": "oci",
-      "identifier": "ghcr.io/rustok-org/rustok-wallet:0.3.2",
-      "version": "0.3.2",
+      "identifier": "ghcr.io/rustok-org/rustok-wallet:v0.4.0",
+      "version": "0.4.0",
       "transport": {
         "type": "stdio"
       },
       "runtimeHint": "docker",
       "runtimeArguments": [
+        {
+          "type": "named",
+          "name": "-i",
+          "description": "Keep stdin open — required for the stdio MCP transport."
+        },
+        {
+          "type": "named",
+          "name": "--rm",
+          "description": "Remove the ephemeral container on exit (keys persist in the volume)."
+        },
+        {
+          "type": "named",
+          "name": "--init",
+          "description": "PID-1 init: signal forwarding and zombie reaping."
+        },
         {
           "type": "named",
           "name": "-v",