fix(cli, rfd): Escalate Ctrl-C only on unanswered presses

[JeanMertz]

EscalationState reset the Ctrl-C press count on elapsed time alone, so a press an interrupt menu had already answered stayed on the escalation ladder. Answering the streaming menu and interrupting again inside the two-second cooldown counted as a second press, which bypasses the handler stack and requests a graceful shutdown, so the run ended with no menu and no message. Answering the menu quickly made the next Ctrl-C fatal; taking longer than the cooldown left it working.

A delivered press is now an InterruptNotice that the notified event loop resolves. handled() clears the count, decline() hands the press to the next handler down with the count intact, and dropping it leaves the press on the ladder, which is the safe default for a handler that was notified but produced nothing visible. Only presses that produced nothing escalate.

Carrying the reset on the delivered value rather than on the router means an event loop cannot decide what a press did without holding the value that records the decision, so the ladder behaves the same at every handler site. lock.rs and plugin/dispatch.rs had the same defect and now resolve their presses too.

inline_select returning Err mapped every error to an escalation, conflating the user cancelling the menu with the menu being unable to run at all. The latter now yields PromptFailed, which leaves the turn untouched and the press on the ladder, so a second Ctrl-C gets the user out through the router instead of through a prompt that is not working.

The interrupt path also logs the resolved action, the decision the handler reached, and the InquireError behind a prompt that returned without a selection. That error was discarded as Err(_), and its absence is why diagnosing this took several rounds of guessing.

RFD 045 is updated to match: the ladder counts unanswered presses, and SignalRouter::decline is replaced by resolving the notice. T0014 stays open, since the traces that opened it showed a different signature and are no longer available.