node: purge dead protobuf tooling — ZAP-native, .proto codegen fully retired

Node has ZERO .proto files and ZERO .pb.go — the wire is hand-written ZAP schemas
(proto/{platformvm,vm,p2p,sync}/*_zap.go). The buf/protoc tooling around it was
orphaned: removed proto/{buf.yaml,buf.gen.yaml,Dockerfile.buf,buf.md,README.md},
scripts/protobuf_codegen.sh, the Taskfile generate-protobuf + check-generate-protobuf
targets, ci.yml buf-lint + check_generated_protobuf jobs (the latter ran the deleted
script → would fail CI), and the buf-lint.yml workflow. defaultPatch 10→11 (dev
version string; image already correct via ldflags). Binary unchanged — tooling/CI only.

Co-authored-by: Hanzo Dev <dev@hanzo.ai>

version/constants.go

@@ -77,7 +77,7 @@ var (
 const (
 	defaultMajor = 1
 	defaultMinor = 36
-	defaultPatch = 10
+	defaultPatch = 11
 )
 
 func init() {