router: Router.Route consumes NormalizedInput directly (slice 11)

Change Route from (ctx, utterance string, now) to (ctx, input NormalizedInput, now).
The ingress-constructed NormalizedInput now reaches the cascade intact — no
reconstruction downstream. TryFastPath receives the same input, not a rebuilt one.
All callers (production, eval framework, tests) updated to construct NormalizedInput.

internal/router/router.go

@@ -71,9 +71,11 @@ func New(cfg Config) *Router {
 //	is flagged Clarify (the daemon asks rather than guesses — same shape as
 //	since(key)==null → don't fire: a misrouted fact is a confident wrong write,
 //	worse than a gap).
-func (r *Router) Route(ctx context.Context, utterance string, now time.Time) (Decision, error) {
+func (r *Router) Route(ctx context.Context, input NormalizedInput, now time.Time) (Decision, error) {
+	utterance := input.Text
+
 	// stage 0 — deterministic fast path. First match wins; grammars are ordered.
-	fast, err := r.TryFastPath(ctx, NormalizedInput{Text: utterance}, now)
+	fast, err := r.TryFastPath(ctx, input, now)
 	if err != nil {
 		return Decision{}, err
 	}