fix: edit ops second review findings

- A group's sunSensor and a shade's flags are refused by name: the routes
  don't set them.
- setPaired needs paired, and without a shade id it is a bad request.
- groupOptions' payload is parsed in ProtoEdits (parseReadPayload).
- The assembler's mutex is static, so creating it can't fail.
- protoIsReadOp and protoIsShadeOp are gone; the tests use protoOpKind.
- Native tests for missing(), offeredRemoteAddress and the edit ops
  against the TYPE table.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/ProtoOps.cpp

@@ -103,8 +103,6 @@ bool protoCommand(const char *name, somfy_commands &cmd) {
   return false;
 }
 
-bool protoIsShadeOp(uint8_t type) { return protoOpKind(type) == proto_op_t::shadeRequest; }
-
 // The repeat count and step size a command may carry.
 static void readRepeat(OpReader &r, shade_request_t &req) {
   int32_t n;