Remote sessions spot their own echoed requests and renew device proof when unverified.
What's wrong with this entry?
A remote session client now recognises when a control request it sent is echoed back to it from another source, checks the device attestation status on that frame, and renews its device proof when the status is unverified.
- The client keeps the uuids of its own requests and only takes this path when the returned uuid matches one it sent; previously such frames were dropped.
- A new echo callback fires and is wired to a one-shot handler on the pending request.
- No gate; reachable on any remote session connection.
echoed from source=
Strings lifted out of the shipped bundle, so the claim above can be checked against them.