Check adapter prompt parity after every protocol translation

For node-specific adapters, isolate model selection at the provider boundary and restore ordinary provider settings on every node entry. Capture the final request and rendered prompt after compaction, schema mutation, and protocol conversion. Verify roles, tool order and strict schemas, decoding fields, parallel-tool policy, and template arguments. If a shared router can rewrite models or preserve call-sticky state, use a dedicated compatible origin. Request-ordinal routing needs an explicit ordinal signal; a node name is insufficient.