Add signing engine, refine ui

src/models.ts

@@ -79,6 +79,12 @@ export type DkgSession = {
   round2: Record<number, Hex>
   /** Members who declined, keyed by pubkey, value is their optional reason */
   declines: Record<Hex, string>
+  /** Set when the session was aborted (equivocation or a crypto-verification failure) */
+  aborted?: boolean
+  /** True once we have locally finalized and saved this quorum (usable for signing) */
+  complete?: boolean
+  /** Count of matching kind 7053 confirmations received (ours + peers') */
+  confirmed?: number
 }
 
 // ── Resharing session ─────────────────────────────────────────────────────────