server.json: drop per-package version field (OCI packages must not have it)

The registry validator rejects OCI packages with an explicit version
field - the version is read from the tag in the identifier (':1.0.3').
Update both the static server.json and the workflow's sed step so the
field is consistently absent.

Author: maciekaz

.github/workflows/publish-image.yml

@@ -118,7 +118,9 @@ jobs:
           d = json.loads(p.read_text())
           d["version"] = "$V"
           for pkg in d.get("packages", []):
-              pkg["version"] = "$V"
+              # OCI packages must NOT have a 'version' field; the version
+              # lives inside the identifier tag (per registry validator).
+              pkg.pop("version", None)
               ident = pkg.get("identifier", "")
               if ":" in ident:
                   pkg["identifier"] = ident.rsplit(":", 1)[0] + ":$V"

server.json

@@ -11,7 +11,6 @@
     {
       "registryType": "oci",
       "identifier": "ghcr.io/maciekaz/eset-mcp:1.0.3",
-      "version": "1.0.3",
       "transport": {
         "type": "stdio"
       }