From a1ddb3bbd78e56b1d1e17af6bf7044eb508d6e84 Mon Sep 17 00:00:00 2001
From: Jon Staab <jstaab@protonmail.com>
Date: Thu, 11 Jun 2026 19:05:15 -0700
Subject: [PATCH] Add signing engine, refine ui

---
 src/Layout.tsx                          |  72 +--
 src/Login.tsx                           |   3 +
 src/boot.ts                             |  19 +-
 src/components/QuorumChat.tsx           | 267 +++++-----
 src/components/QuorumDetail.tsx         |  37 +-
 src/components/QuorumList.tsx           |  19 +-
 src/components/QuorumSessions.tsx       | 318 ++++++++++++
 src/components/forms/DkgForms.tsx       |  49 +-
 src/components/forms/ResharingForms.tsx |  74 ++-
 src/components/forms/SigningForms.tsx   | 461 ++++++++++++++---
 src/components/tabs/QuorumLog.tsx       |  77 +--
 src/components/tabs/QuorumMembers.tsx   |   9 +-
 src/engine/chat.ts                      |  88 ++++
 src/engine/delivery.ts                  |  35 ++
 src/engine/dkg.ts                       | 517 +++++++++++++++++++
 src/engine/events.ts                    | 102 ++++
 src/engine/index.ts                     |  19 +
 src/engine/notifications.ts             | 116 +++++
 src/engine/resharing.ts                 | 642 ++++++++++++++++++++++++
 src/engine/secrets.ts                   | 132 +++++
 src/engine/signing.ts                   | 603 ++++++++++++++++++++++
 src/lib/media.ts                        |  11 +
 src/models.ts                           |   6 +
 src/nostr.ts                            |  12 +-
 src/quorum.ts                           |  61 ---
 src/store.ts                            |  53 +-
 26 files changed, 3404 insertions(+), 398 deletions(-)
 create mode 100644 src/components/QuorumSessions.tsx
 create mode 100644 src/engine/chat.ts
 create mode 100644 src/engine/delivery.ts
 create mode 100644 src/engine/dkg.ts
 create mode 100644 src/engine/events.ts
 create mode 100644 src/engine/index.ts
 create mode 100644 src/engine/notifications.ts
 create mode 100644 src/engine/resharing.ts
 create mode 100644 src/engine/secrets.ts
 create mode 100644 src/engine/signing.ts
 create mode 100644 src/lib/media.ts
 delete mode 100644 src/quorum.ts

diff --git a/src/Layout.tsx b/src/Layout.tsx
index 6382a47..4cedf3f 100644
--- a/src/Layout.tsx
+++ b/src/Layout.tsx
@@ -10,8 +10,9 @@ import { ProposeSign } from "./components/forms/SigningForms"
 import Avatar from "./components/Avatar"
 import { displayProfile } from "@welshman/util"
 import { useActivePubkey, useProfile } from "./hooks"
+import { isDesktop } from "./lib/media"
 
-function SidebarContent(props: { onNew: () => void }) {
+function SidebarContent(props: { onNew: () => void; onNavigate?: () => void }) {
   const pubkey = useActivePubkey()
   const shortKey = () => `${pubkey().slice(0, 8)}…${pubkey().slice(-4)}`
   const profile = useProfile(pubkey)
@@ -19,28 +20,15 @@ function SidebarContent(props: { onNew: () => void }) {
 
   return (
     <div class="flex flex-col h-full">
-      <div class="px-3 pt-4 pb-2">
-        <button
-          class={`w-full text-left px-3 py-2 rounded-lg text-sm font-medium transition-colors ${
-            view() === "inbox"
-              ? "bg-blue-50 text-blue-700 dark:bg-blue-900/30 dark:text-blue-300"
-              : "text-gray-700 dark:text-neutral-300 hover:bg-gray-100 dark:hover:bg-neutral-700"
-          }`}
-          onClick={() => setView("inbox")}
-        >
-          Inbox
-        </button>
-      </div>
-
       <div class="px-3 py-2 flex-1 overflow-y-auto">
-        <QuorumList onNew={props.onNew} />
+        <QuorumList onNew={props.onNew} onNavigate={props.onNavigate} />
       </div>
 
       <div class="border-t border-gray-200 dark:border-neutral-700 p-3">
         <div class="flex items-center gap-2">
           <button
             class="flex items-center gap-2 flex-1 min-w-0 rounded-lg px-1 py-0.5 -ml-1 hover:bg-gray-100 dark:hover:bg-neutral-700 transition-colors text-left"
-            onClick={() => setView("account")}
+            onClick={() => { setView("account"); props.onNavigate?.() }}
           >
             <Avatar pubkey={pubkey()} />
             <p class="text-sm font-medium text-gray-900 dark:text-white truncate">{name()}</p>
@@ -48,7 +36,7 @@ function SidebarContent(props: { onNew: () => void }) {
           <button
             class="p-1.5 rounded-md text-gray-400 hover:text-gray-600 dark:text-neutral-500 dark:hover:text-neutral-300 hover:bg-gray-100 dark:hover:bg-neutral-700 transition-colors"
             title="Log out"
-            onClick={() => logout()}
+            onClick={() => { logout(); props.onNavigate?.() }}
           >
             <svg class="size-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
               <path stroke-linecap="round" stroke-linejoin="round" d="M17 16l4-4m0 0l-4-4m4 4H7m6 4v1a2 2 0 01-2 2H5a2 2 0 01-2-2V7a2 2 0 012-2h6a2 2 0 012 2v1" />
@@ -74,7 +62,7 @@ export default function Layout() {
         <div class="px-4 py-4 border-b border-gray-200 dark:border-neutral-700">
           <span class="text-base font-bold text-gray-900 dark:text-white">NQ</span>
         </div>
-        <SidebarContent onNew={() => setShowProposeQuorum(true)} />
+        <SidebarContent onNew={() => setShowProposeQuorum(true)} onNavigate={() => setDrawerOpen(false)} />
       </aside>
 
       {/* Mobile drawer backdrop */}
@@ -98,19 +86,29 @@ export default function Layout() {
             </svg>
           </button>
         </div>
-        <SidebarContent onNew={() => setShowProposeQuorum(true)} />
+        <SidebarContent onNew={() => setShowProposeQuorum(true)} onNavigate={() => setDrawerOpen(false)} />
       </aside>
 
       {/* Desktop: 3-column layout */}
       <div class="hidden md:flex flex-1 min-w-0 overflow-hidden">
         {/* Col 2: main content */}
         <div class="flex-1 min-w-0 overflow-y-auto">
-          <Show when={view() === "inbox"}>
-            <div class="p-6">
-              <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Inbox</h2>
-              <p class="text-sm text-gray-500 dark:text-neutral-400">
-                Pending invitations and requests will appear here.
-              </p>
+          <Show when={view() === "home"}>
+            <div class="flex items-center justify-center min-h-full p-6">
+              <div class="flex flex-col items-center text-center gap-4 max-w-sm">
+                <h1 class="text-2xl font-bold text-gray-900 dark:text-white">Welcome to NQ</h1>
+                <p class="text-sm text-gray-500 dark:text-neutral-400">
+                  FROST threshold multisig for Nostr keys. Create a quorum to share control of a
+                  key with a group, where any threshold of members can sign.
+                </p>
+                <button
+                  type="button"
+                  class="px-5 py-2.5 text-sm font-medium rounded-lg bg-blue-600 text-white hover:bg-blue-700 transition-colors"
+                  onClick={() => setShowProposeQuorum(true)}
+                >
+                  Create your first quorum
+                </button>
+              </div>
             </div>
           </Show>
           <Show when={view() === "account"}>
@@ -131,7 +129,7 @@ export default function Layout() {
               <span class="text-sm font-semibold text-gray-700 dark:text-neutral-300">Sessions</span>
             </div>
             <div class="flex-1 overflow-y-auto">
-              <QuorumChat />
+              <QuorumChat isVisible={isDesktop} />
             </div>
           </div>
         </Show>
@@ -152,12 +150,22 @@ export default function Layout() {
         </header>
 
         <main class="flex-1 overflow-y-auto">
-          <Show when={view() === "inbox"}>
-            <div class="p-6">
-              <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Inbox</h2>
-              <p class="text-sm text-gray-500 dark:text-neutral-400">
-                Pending invitations and requests will appear here.
-              </p>
+          <Show when={view() === "home"}>
+            <div class="flex items-center justify-center min-h-full p-6">
+              <div class="flex flex-col items-center text-center gap-4 max-w-sm">
+                <h1 class="text-2xl font-bold text-gray-900 dark:text-white">Welcome to NQ</h1>
+                <p class="text-sm text-gray-500 dark:text-neutral-400">
+                  FROST threshold multisig for Nostr keys. Create a quorum to share control of a
+                  key with a group, where any threshold of members can sign.
+                </p>
+                <button
+                  type="button"
+                  class="px-5 py-2.5 text-sm font-medium rounded-lg bg-blue-600 text-white hover:bg-blue-700 transition-colors"
+                  onClick={() => setShowProposeQuorum(true)}
+                >
+                  Create your first quorum
+                </button>
+              </div>
             </div>
           </Show>
           <Show when={view() === "account"}>
diff --git a/src/Login.tsx b/src/Login.tsx
index 6934954..f62f855 100644
--- a/src/Login.tsx
+++ b/src/Login.tsx
@@ -2,6 +2,7 @@ import { createSignal, Show } from "solid-js"
 import toast from "solid-toast"
 import { getNip07, Nip07Signer } from "@welshman/signer"
 import { loginWithNip01, loginWithNip07 } from "@welshman/app"
+import { onLogin } from "./engine/notifications"
 
 type Tab = "extension" | "nsec" | "nip46"
 
@@ -61,6 +62,7 @@ export default function Login() {
       if (!getNip07()) { throw new Error("Extension not found") }
       const pubkey = await new Nip07Signer().getPubkey()
       loginWithNip07(pubkey)
+      onLogin()
     } catch (e: any) {
       toast.error(e?.message ?? "Extension not found")
     } finally {
@@ -82,6 +84,7 @@ export default function Login() {
         throw new Error("Invalid key")
       }
       loginWithNip01(secret)
+      onLogin()
     } catch (e: any) {
       toast.error(e?.message ?? "Invalid key")
     } finally {
diff --git a/src/boot.ts b/src/boot.ts
index cb6e3c2..e2cb497 100644
--- a/src/boot.ts
+++ b/src/boot.ts
@@ -1,7 +1,9 @@
 import "@welshman/app"                          // side effects: wires pool → repository/tracker/router
-import { shouldUnwrap } from "@welshman/app"
+import { shouldUnwrap, pubkey, sessions } from "@welshman/app"
 import { routerContext } from "@welshman/router"
+import { sync, localStorageProvider } from "@welshman/store"
 import { hydrateRepository, persistRepository } from "./storage"
+import { startEngine } from "./engine"
 
 const parseRelays = (v?: string): string[] =>
   (v ?? "").split(",").map(s => s.trim()).filter(Boolean)
@@ -13,9 +15,24 @@ routerContext.getIndexerRelays = () => INDEXER_RELAYS
 routerContext.getSearchRelays = () => SEARCH_RELAYS
 routerContext.getDefaultRelays = () => INDEXER_RELAYS
 
+// Persist login across reloads. @welshman/app keeps `sessions` (the keypairs/methods) and
+// `pubkey` (the active one) in memory only; sync() hydrates these existing stores from
+// localStorage on boot and writes every change back, so the active session and its derived
+// signer are restored after a refresh. Kicked off early so the session is available ASAP
+// (it resolves async; the UI shows Login until pubkey hydrates).
+// Hydrate sessions first, then the active pubkey, so the derived session/signer resolve
+// correctly the instant pubkey is restored (no window where pubkey is set but its session isn't).
+void sync({ key: "nq:sessions", store: sessions, storage: localStorageProvider })
+  .then(() => sync({ key: "nq:pubkey", store: pubkey, storage: localStorageProvider }))
+
 // Opt into NIP-59 gift-wrap unwrapping so inbox rumors are decrypted and stored automatically.
 shouldUnwrap.set(true)
 
+// Start the protocol engine's reactive coordinators (DKG, resharing, signing). They are
+// idempotent and process already-hydrated events on their first run, so they are safe to
+// start before hydration completes.
+startEngine()
+
 // Repository persistence: register the flush listener, then hydrate from disk.
 persistRepository()
 void hydrateRepository()
diff --git a/src/components/QuorumChat.tsx b/src/components/QuorumChat.tsx
index 7f16697..388b1df 100644
--- a/src/components/QuorumChat.tsx
+++ b/src/components/QuorumChat.tsx
@@ -1,132 +1,155 @@
-import { For, Show, createMemo } from "solid-js"
-import { activeQuorum, dkgSessions, resharingSessions, signingSessions } from "../store"
-import type { DkgSession, ResharingSession, SigningSession } from "../models"
+import { For, Show, createMemo, createSignal, createEffect } from "solid-js"
+import type { TrustedEvent } from "@welshman/util"
+import { toast } from "solid-toast"
+import { activeQuorum } from "../store"
+import { useProfileDisplay, useActivePubkey } from "../hooks"
+import { chatMessages, sendChatMessage } from "../engine/chat"
+import { markTabViewed } from "../engine/notifications"
+import Avatar from "./Avatar"
 
-export default function QuorumChat() {
-  const pendingDkg = createMemo<DkgSession[]>(() =>
-    dkgSessions.filter(s => s.phase === "round1")
-  )
-
-  const pendingSigning = createMemo<SigningSession[]>(() => {
-    const q = activeQuorum()
-    return signingSessions.filter(s => s.phase === "round1" && s.quorumPubkey === q?.quorumPubkey)
+function formatTime(seconds: number): string {
+  return new Date(seconds * 1000).toLocaleString(undefined, {
+    month: "short",
+    day: "numeric",
+    hour: "numeric",
+    minute: "2-digit",
   })
+}
 
-  const inProgress = createMemo<Array<{ type: string; phase: string; id: string }>>(() => {
-    const result: Array<{ type: string; phase: string; id: string }> = []
-    for (const s of dkgSessions) {
-      if (s.phase === "round2" || s.phase === "confirming") {
-        result.push({ type: "DKG", phase: s.phase, id: s.inviteId })
-      }
-    }
-    for (const s of resharingSessions) {
-      if (s.phase === "round2" || s.phase === "confirming") {
-        result.push({ type: "Resharing", phase: s.phase, id: s.proposalId })
-      }
-    }
-    for (const s of signingSessions) {
-      if (s.phase === "round2") {
-        result.push({ type: "Signing", phase: s.phase, id: s.requestId })
-      }
-    }
-    return result
-  })
-
-  const isEmpty = createMemo(() =>
-    pendingDkg().length === 0 && pendingSigning().length === 0 && inProgress().length === 0
-  )
-
+function ChatMessage(props: { event: TrustedEvent; mine: boolean }) {
+  const name = useProfileDisplay(() => props.event.pubkey)
   return (
-    <div class="flex flex-col h-full p-4 gap-4">
-      <Show when={isEmpty()}>
-        <div class="flex flex-1 items-center justify-center">
-          <span class="text-sm text-gray-400 dark:text-neutral-500">No active sessions.</span>
-        </div>
-      </Show>
-
-      <Show when={pendingDkg().length > 0 || pendingSigning().length > 0}>
-        <div class="flex flex-col gap-2">
-          <span class="text-xs font-semibold uppercase tracking-wide text-gray-500 dark:text-neutral-400">
-            Needs Action
+    <div class={`flex gap-2 ${props.mine ? "flex-row-reverse" : "flex-row"}`}>
+      <Avatar pubkey={props.event.pubkey} />
+      <div class={`flex flex-col gap-1 max-w-[75%] ${props.mine ? "items-end" : "items-start"}`}>
+        <div class="flex items-baseline gap-2">
+          <span class="text-xs font-medium text-gray-700 dark:text-neutral-300 truncate">
+            {props.mine ? "You" : name()}
           </span>
-          <For each={pendingDkg()}>
-            {(session: DkgSession) => (
-              <div class="rounded-lg border border-amber-300 dark:border-amber-600 bg-amber-50 dark:bg-amber-950 p-3 flex flex-col gap-2">
-                <div class="flex flex-col gap-0.5">
-                  <span class="text-sm font-medium text-amber-900 dark:text-amber-200">
-                    DKG Invite
-                  </span>
-                  <span class="text-xs text-amber-700 dark:text-amber-400">
-                    {session.members.length} members · threshold {session.threshold}
-                  </span>
-                </div>
-                <div class="flex gap-2">
-                  <button
-                    class="px-4 py-2 text-sm font-medium rounded-lg bg-blue-600 text-white hover:bg-blue-700 transition-colors"
-                    onClick={() => console.log("Accept DKG", session.inviteId)}
-                  >
-                    Accept
-                  </button>
-                  <button
-                    class="px-4 py-2 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors"
-                    onClick={() => console.log("Decline DKG", session.inviteId)}
-                  >
-                    Decline
-                  </button>
-                </div>
-              </div>
-            )}
-          </For>
-          <For each={pendingSigning()}>
-            {(session: SigningSession) => (
-              <div class="rounded-lg border border-amber-300 dark:border-amber-600 bg-amber-50 dark:bg-amber-950 p-3 flex flex-col gap-2">
-                <div class="flex flex-col gap-0.5">
-                  <span class="text-sm font-medium text-amber-900 dark:text-amber-200">
-                    Sign Request
-                  </span>
-                  <span class="text-xs text-amber-700 dark:text-amber-400 font-mono truncate">
-                    {session.msgHex.slice(0, 16)}…
-                  </span>
-                </div>
-                <div class="flex gap-2">
-                  <button
-                    class="px-4 py-2 text-sm font-medium rounded-lg bg-blue-600 text-white hover:bg-blue-700 transition-colors"
-                    onClick={() => console.log("Sign", session.requestId)}
-                  >
-                    Sign
-                  </button>
-                  <button
-                    class="px-4 py-2 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors"
-                    onClick={() => console.log("Decline signing", session.requestId)}
-                  >
-                    Decline
-                  </button>
-                </div>
-              </div>
-            )}
-          </For>
-        </div>
-      </Show>
-
-      <Show when={inProgress().length > 0}>
-        <div class="flex flex-col gap-2">
-          <span class="text-xs font-semibold uppercase tracking-wide text-gray-500 dark:text-neutral-400">
-            In Progress
+          <span class="text-xs text-gray-400 dark:text-neutral-500">
+            {formatTime(props.event.created_at)}
           </span>
-          <For each={inProgress()}>
-            {(item) => (
-              <div class="rounded-lg border border-gray-200 dark:border-neutral-600 bg-gray-50 dark:bg-neutral-800 p-3 flex items-center justify-between">
-                <span class="text-sm font-medium text-gray-700 dark:text-neutral-300">
-                  {item.type}
-                </span>
-                <span class="text-xs text-gray-500 dark:text-neutral-400 capitalize">
-                  {item.phase}
-                </span>
-              </div>
-            )}
-          </For>
         </div>
-      </Show>
+        <div
+          class={`px-3 py-2 rounded-lg text-sm whitespace-pre-wrap break-words ${
+            props.mine
+              ? "bg-blue-600 text-white"
+              : "bg-gray-100 dark:bg-neutral-800 text-gray-900 dark:text-neutral-100"
+          }`}
+        >
+          {props.event.content}
+        </div>
+      </div>
     </div>
   )
 }
+
+export default function QuorumChat(props: { isVisible?: () => boolean }) {
+  const me = useActivePubkey()
+  const quorum = createMemo(() => activeQuorum())
+  // The thread may be tagged with the invite id (while pending) and/or the quorum pubkey
+  // (once established); query both so the conversation is continuous across that transition.
+  const threadIds = createMemo<string[]>(() => {
+    const q = quorum()
+    if (!q) { return [] }
+    return [q.inviteId, q.quorumPubkey].filter((x): x is string => Boolean(x))
+  })
+  const messages = createMemo<TrustedEvent[]>(() => chatMessages(threadIds()))
+
+  const [draft, setDraft] = createSignal("")
+  const [sending, setSending] = createSignal(false)
+  let listEl: HTMLDivElement | undefined
+
+  // Keep the message list pinned to the bottom as messages arrive.
+  createEffect(() => {
+    messages()
+    if (listEl) { listEl.scrollTop = listEl.scrollHeight }
+  })
+
+  // Mark the chat read while it is actually on screen (re-runs as messages arrive). Both
+  // the desktop side panel and the mobile chat tab render a QuorumChat, and both stay
+  // mounted (the other is just CSS-hidden), so `isVisible` tells this instance whether it
+  // is the visible one — otherwise the hidden desktop panel would mark chat read on mobile
+  // and the chat tab badge would never appear.
+  createEffect(() => {
+    const q = quorum()
+    if (!q) { return }
+    const visible = props.isVisible ? props.isVisible() : true
+    messages()
+    if (visible) { markTabViewed(q.inviteId, "chat") }
+  })
+
+  async function send() {
+    const q = quorum()
+    const text = draft().trim()
+    if (!q || !text || sending()) { return }
+    setSending(true)
+    try {
+      // Send under the established pubkey if it exists, otherwise the invite id.
+      const threadId = q.quorumPubkey ?? q.inviteId
+      await sendChatMessage(threadId, q.members.map(m => m.pubkey), text)
+      setDraft("")
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to send message")
+    } finally {
+      setSending(false)
+    }
+  }
+
+  function onKeyDown(e: KeyboardEvent) {
+    if (e.key === "Enter" && !e.shiftKey) {
+      e.preventDefault()
+      send()
+    }
+  }
+
+  return (
+    <Show
+      when={quorum()}
+      fallback={
+        <div class="flex flex-1 items-center justify-center p-4">
+          <span class="text-sm text-gray-400 dark:text-neutral-500">
+            Select a quorum to chat with its members.
+          </span>
+        </div>
+      }
+    >
+      <div class="flex flex-col h-full">
+        <div ref={listEl} class="flex-1 overflow-y-auto p-4 flex flex-col gap-4">
+          <Show
+            when={messages().length > 0}
+            fallback={
+              <div class="flex flex-1 items-center justify-center">
+                <span class="text-sm text-gray-400 dark:text-neutral-500">
+                  No messages yet. Say hello to your quorum.
+                </span>
+              </div>
+            }
+          >
+            <For each={messages()}>
+              {(event) => <ChatMessage event={event} mine={event.pubkey === me()} />}
+            </For>
+          </Show>
+        </div>
+
+        <div class="border-t border-gray-200 dark:border-neutral-700 p-3 flex items-end gap-2">
+          <textarea
+            class="flex-1 resize-none rounded-lg border border-gray-200 dark:border-neutral-600 bg-white dark:bg-neutral-800 text-sm text-gray-900 dark:text-neutral-100 px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
+            rows={1}
+            placeholder="Message the quorum…"
+            value={draft()}
+            onInput={(e) => setDraft(e.currentTarget.value)}
+            onKeyDown={onKeyDown}
+          />
+          <button
+            class="px-4 py-2 text-sm font-medium rounded-lg bg-blue-600 text-white hover:bg-blue-700 transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
+            disabled={!draft().trim() || sending()}
+            onClick={send}
+          >
+            Send
+          </button>
+        </div>
+      </div>
+    </Show>
+  )
+}
diff --git a/src/components/QuorumDetail.tsx b/src/components/QuorumDetail.tsx
index 94b6820..9fb12d3 100644
--- a/src/components/QuorumDetail.tsx
+++ b/src/components/QuorumDetail.tsx
@@ -1,6 +1,9 @@
 import { Show, Switch, Match } from "solid-js"
 import { activeQuorum, view, setTab } from "../store"
-import { useProfileDisplay } from "../hooks"
+import { useProfile } from "../hooks"
+import { displayProfile } from "@welshman/util"
+import { tabHasActivity } from "../engine/notifications"
+import { isDesktop } from "../lib/media"
 import QuorumLog from "./tabs/QuorumLog"
 import QuorumMembers from "./tabs/QuorumMembers"
 import QuorumChat from "./QuorumChat"
@@ -21,8 +24,14 @@ const badgeClass: Record<string, string> = {
 }
 
 export default function QuorumDetail(props: Props) {
-  const quorumName = useProfileDisplay(() => activeQuorum()?.quorumPubkey ?? "")
-  const title = () => (activeQuorum()?.quorumPubkey ? quorumName() : "New quorum")
+  const profile = useProfile(() => activeQuorum()?.quorumPubkey ?? "")
+  // Use the quorum's profile name when it has one; fall back to "Quorum" (or "New quorum"
+  // while the key doesn't exist yet).
+  const headerName = () => {
+    const q = activeQuorum()
+    if (!q?.quorumPubkey) { return "New quorum" }
+    return displayProfile(profile(), "Quorum")
+  }
   const complete = () => Boolean(activeQuorum()?.complete)
   return (
     <Show
@@ -34,24 +43,21 @@ export default function QuorumDetail(props: Props) {
       }
     >
       <div class="flex flex-col h-full">
-        <div class="px-4 py-3 border-b border-gray-200 dark:border-neutral-700 flex items-start justify-between">
+        <div class="px-4 py-3 border-b border-gray-200 dark:border-neutral-700 flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
           <div class="min-w-0">
             <div class="flex items-center gap-2 mb-1">
-              <span class="text-xs font-medium text-gray-500 dark:text-neutral-400 uppercase tracking-wide">
-                Quorum
+              <span class="text-sm font-semibold text-gray-900 dark:text-white truncate">
+                {headerName()}
               </span>
-              <span class={`px-2 py-0.5 rounded-full text-[11px] font-medium ${badgeClass[activeQuorum()!.status]}`}>
+              <span class={`px-2 py-0.5 rounded-full text-[11px] font-medium shrink-0 ${badgeClass[activeQuorum()!.status]}`}>
                 {activeQuorum()!.statusLabel}
               </span>
             </div>
-            <div class="text-sm font-semibold text-gray-900 dark:text-white truncate">
-              {title()}
-            </div>
             <div class="font-mono text-xs text-gray-400 dark:text-neutral-500 break-all">
               {activeQuorum()!.quorumPubkey ?? activeQuorum()!.inviteId}
             </div>
           </div>
-          <div class="flex items-center gap-2 ml-4 shrink-0">
+          <div class="flex items-center gap-2 shrink-0 sm:ml-4">
             <button
               class="px-4 py-2 text-sm font-medium rounded-lg bg-blue-600 text-white hover:bg-blue-700 transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
               disabled={!complete()}
@@ -85,7 +91,12 @@ export default function QuorumDetail(props: Props) {
                 .join(" ")}
               onClick={() => setTab(tab as Tab)}
             >
-              {tab.charAt(0).toUpperCase() + tab.slice(1)}
+              <span class="inline-flex items-center gap-1.5">
+                {tab.charAt(0).toUpperCase() + tab.slice(1)}
+                <Show when={activeQuorum() && tabHasActivity(activeQuorum()!, tab)}>
+                  <span class="size-1.5 rounded-full bg-blue-500" title="New activity" />
+                </Show>
+              </span>
             </button>
           ))}
         </div>
@@ -100,7 +111,7 @@ export default function QuorumDetail(props: Props) {
             </Match>
             <Match when={(view() as any).tab === "chat"}>
               <div class="md:hidden h-full">
-                <QuorumChat />
+                <QuorumChat isVisible={() => !isDesktop()} />
               </div>
             </Match>
           </Switch>
diff --git a/src/components/QuorumList.tsx b/src/components/QuorumList.tsx
index ac357b0..5cc201b 100644
--- a/src/components/QuorumList.tsx
+++ b/src/components/QuorumList.tsx
@@ -1,10 +1,12 @@
-import { For } from "solid-js"
+import { For, Show } from "solid-js"
 import { displayedQuora, view, openQuorum } from "../store"
 import { useProfileDisplay } from "../hooks"
+import { quorumHasActivity } from "../engine/notifications"
 import type { DisplayedQuorum } from "../models"
 
 type Props = {
   onNew?: () => void
+  onNavigate?: () => void
 }
 
 const dotClass: Record<DisplayedQuorum["status"], string> = {
@@ -14,7 +16,7 @@ const dotClass: Record<DisplayedQuorum["status"], string> = {
   pending: "bg-gray-400 dark:bg-neutral-500",
 }
 
-function QuorumListItem(props: { quorum: DisplayedQuorum }) {
+function QuorumListItem(props: { quorum: DisplayedQuorum; onNavigate?: () => void }) {
   const name = useProfileDisplay(() => props.quorum.quorumPubkey ?? "")
   const label = () => (props.quorum.quorumPubkey ? name() : "New quorum")
   const isActive = () => {
@@ -29,10 +31,13 @@ function QuorumListItem(props: { quorum: DisplayedQuorum }) {
           ? "bg-blue-100 dark:bg-blue-900/40 text-blue-700 dark:text-blue-300"
           : "text-gray-700 dark:text-neutral-300 hover:bg-gray-100 dark:hover:bg-neutral-700"
       }`}
-      onClick={() => openQuorum(props.quorum.id)}
+      onClick={() => { openQuorum(props.quorum.id); props.onNavigate?.() }}
     >
-      <div class="font-medium text-sm truncate">
-        {label()}
+      <div class="font-medium text-sm truncate flex items-center gap-1.5">
+        <span class="truncate">{label()}</span>
+        <Show when={quorumHasActivity(props.quorum)}>
+          <span class="size-2 rounded-full bg-blue-500 shrink-0" title="New activity" />
+        </Show>
       </div>
       <div class="flex items-center gap-1.5 text-xs opacity-60">
         <span class={`inline-block size-1.5 rounded-full shrink-0 ${dotClass[props.quorum.status]}`} />
@@ -53,7 +58,7 @@ export default function QuorumList(props: Props) {
         </span>
         <button
           class="text-gray-500 dark:text-neutral-400 hover:text-gray-700 dark:hover:text-neutral-200 text-lg leading-none transition-colors"
-          onClick={() => props.onNew?.()}
+          onClick={() => { props.onNew?.(); props.onNavigate?.() }}
         >
           +
         </button>
@@ -67,7 +72,7 @@ export default function QuorumList(props: Props) {
             </p>
           }
         >
-          {(q) => <QuorumListItem quorum={q} />}
+          {(q) => <QuorumListItem quorum={q} onNavigate={props.onNavigate} />}
         </For>
       </div>
     </nav>
diff --git a/src/components/QuorumSessions.tsx b/src/components/QuorumSessions.tsx
new file mode 100644
index 0000000..c6e3d31
--- /dev/null
+++ b/src/components/QuorumSessions.tsx
@@ -0,0 +1,318 @@
+import { For, Show, createMemo, createSignal } from "solid-js"
+import type { JSX } from "solid-js"
+import toast from "solid-toast"
+import type { TrustedEvent } from "@welshman/util"
+import { useReadable } from "../lib/stores"
+import { useActivePubkey } from "../hooks"
+import { dkgSessions, acceptDkg, declineDkg } from "../engine/dkg"
+import { resharingSessions, acceptResharing, declineResharing } from "../engine/resharing"
+import {
+  signingSessions, acceptSign, declineSign, isSigningAborted, publishedSignature,
+} from "../engine/signing"
+import { signRequestEvents } from "../engine/events"
+import { sessionProgress, getProgress, getQuorumRecord } from "../engine/secrets"
+import type { DisplayedQuorum, DkgSession, SigningSession } from "../models"
+import type { ResharingSessionView } from "../engine/resharing"
+
+// ── Styling ──────────────────────────────────────────────────────────────────
+const cardClass =
+  "rounded-lg border border-gray-200 dark:border-neutral-700 bg-white dark:bg-neutral-800 p-4 flex flex-col gap-3"
+const primaryButtonClass =
+  "px-3 py-1.5 text-sm font-medium rounded-lg bg-green-600 text-white hover:bg-green-700 transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+const secondaryButtonClass =
+  "px-3 py-1.5 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors disabled:opacity-40 disabled:cursor-not-allowed"
+const messageInputClass =
+  "w-full px-3 py-2 text-sm border border-gray-200 dark:border-neutral-600 rounded-lg bg-white dark:bg-neutral-800 text-gray-900 dark:text-white focus:outline-none focus:ring-2 focus:ring-blue-500"
+
+type StatusKind = "active" | "complete" | "failed"
+
+const statusBadge: Record<StatusKind, string> = {
+  active: "bg-blue-100 text-blue-700 dark:bg-blue-900/40 dark:text-blue-300",
+  complete: "bg-green-100 text-green-700 dark:bg-green-900/40 dark:text-green-300",
+  failed: "bg-red-100 text-red-700 dark:bg-red-900/40 dark:text-red-300",
+}
+
+const phaseLabels: Record<string, string> = {
+  round1: "Round 1",
+  round2: "Round 2",
+  confirming: "Finalizing",
+  complete: "Complete",
+}
+const phaseLabel = (phase: string) => phaseLabels[phase] ?? phase
+
+function signKindLabel(kind: number): string {
+  if (kind === 1) { return "Public note" }
+  if (kind === 0) { return "Profile" }
+  if (kind === 10002) { return "Relay selections" }
+  return `Event (kind ${kind})`
+}
+
+function prettyJson(content: string): string {
+  try {
+    return JSON.stringify(JSON.parse(content), null, 2)
+  } catch {
+    return content
+  }
+}
+
+type ActionDef = {
+  acceptLabel: string
+  onAccept: (message: string) => Promise<void>
+  onDecline: (message: string) => Promise<void>
+}
+
+// ── Generic session card: title + status badge, optional body, optional action ──
+function SessionCard(props: {
+  title: string
+  statusKind: () => StatusKind
+  statusLabel: () => string
+  declined?: () => number
+  body?: JSX.Element
+  action?: () => ActionDef | undefined
+}) {
+  const [message, setMessage] = createSignal("")
+  const [busy, setBusy] = createSignal(false)
+
+  async function run(fn: (m: string) => Promise<void>) {
+    if (busy()) { return }
+    setBusy(true)
+    try {
+      await fn(message().trim())
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Action failed")
+      setBusy(false)
+    }
+  }
+
+  return (
+    <div class={cardClass}>
+      <div class="flex items-start justify-between gap-3">
+        <span class="text-sm font-semibold text-gray-900 dark:text-white">{props.title}</span>
+        <div class="flex items-center gap-1.5 shrink-0">
+          <Show when={(props.declined?.() ?? 0) > 0}>
+            <span class="px-2 py-0.5 rounded-full text-[11px] font-medium bg-red-100 text-red-700 dark:bg-red-900/40 dark:text-red-300">
+              {props.declined!()} declined
+            </span>
+          </Show>
+          <span class={`px-2 py-0.5 rounded-full text-[11px] font-medium ${statusBadge[props.statusKind()]}`}>
+            {props.statusLabel()}
+          </span>
+        </div>
+      </div>
+
+      {props.body}
+
+      <Show when={props.action?.()}>
+        {action => (
+          <div class="flex flex-col gap-2">
+            <input
+              type="text"
+              class={messageInputClass}
+              placeholder="Optional message…"
+              value={message()}
+              onInput={e => setMessage(e.currentTarget.value)}
+            />
+            <div class="flex gap-2 justify-end">
+              <button type="button" class={secondaryButtonClass} disabled={busy()} onClick={() => run(action().onDecline)}>
+                Decline
+              </button>
+              <button type="button" class={primaryButtonClass} disabled={busy()} onClick={() => run(action().onAccept)}>
+                {action().acceptLabel}
+              </button>
+            </div>
+          </div>
+        )}
+      </Show>
+    </div>
+  )
+}
+
+// ── DKG session ────────────────────────────────────────────────────────────────
+function DkgSessionCard(props: { session: DkgSession }) {
+  const me = useActivePubkey()
+  const progress = useReadable(sessionProgress)
+  const joined = () => Object.keys(props.session.round1).length
+
+  const statusKind = (): StatusKind =>
+    props.session.aborted ? "failed" : props.session.complete ? "complete" : "active"
+
+  const statusLabel = () => {
+    if (props.session.aborted) { return "Aborted" }
+    if (props.session.complete) { return "Complete" }
+    return `${phaseLabel(props.session.phase)} · ${joined()}/${props.session.members.length} joined`
+  }
+
+  const action = (): ActionDef | undefined => {
+    progress()
+    const mine = me()
+    if (!mine || props.session.complete || props.session.aborted) { return undefined }
+    if (!props.session.members.includes(mine)) { return undefined }
+    const p = getProgress(props.session.inviteId)
+    if (p.sentRound1 || p.declined) { return undefined }
+    return {
+      acceptLabel: "Accept",
+      onAccept: m => acceptDkg(props.session.inviteId, m || undefined),
+      onDecline: m => declineDkg(props.session.inviteId, m || undefined),
+    }
+  }
+
+  return (
+    <SessionCard
+      title="Key generation"
+      statusKind={statusKind}
+      statusLabel={statusLabel}
+      declined={() => Object.keys(props.session.declines).length}
+      action={action}
+    />
+  )
+}
+
+// ── Resharing session ────────────────────────────────────────────────────────
+function ResharingSessionCard(props: { session: ResharingSessionView }) {
+  const me = useActivePubkey()
+  const progress = useReadable(sessionProgress)
+
+  const statusKind = (): StatusKind =>
+    props.session.aborted ? "failed" : props.session.phase === "complete" ? "complete" : "active"
+
+  const statusLabel = () => {
+    if (props.session.aborted) { return "Aborted" }
+    if (props.session.phase === "complete") { return "Complete" }
+    return `${phaseLabel(props.session.phase)} · ${props.session.round1Count}/${props.session.contributors.length} contributed`
+  }
+
+  const action = (): ActionDef | undefined => {
+    progress()
+    const mine = me()
+    if (!mine || props.session.phase === "complete" || props.session.aborted || props.session.declined) { return undefined }
+    if (!props.session.iAmContributor && !props.session.iAmNewMember) { return undefined }
+    const p = getProgress(props.session.proposalId)
+    if (p.sentRound1 || p.finalized || p.declined) { return undefined }
+    return {
+      acceptLabel: "Participate",
+      onAccept: m => acceptResharing(props.session.proposalId, m || undefined),
+      onDecline: m => declineResharing(props.session.proposalId, m || undefined),
+    }
+  }
+
+  return (
+    <SessionCard
+      title={`Key rotation → ${props.session.newMembers.length} members, threshold ${props.session.newThreshold}`}
+      statusKind={statusKind}
+      statusLabel={statusLabel}
+      declined={() => props.session.declinedCount}
+      action={action}
+    />
+  )
+}
+
+// ── Signing session ────────────────────────────────────────────────────────────
+function SigningSessionCard(props: { session: SigningSession; request: TrustedEvent | undefined }) {
+  const me = useActivePubkey()
+  const progress = useReadable(sessionProgress)
+  const threshold = () => getQuorumRecord(props.session.quorumPubkey)?.threshold ?? 0
+  const collected = () => Object.keys(props.session.round1).length
+  const aborted = () => isSigningAborted(props.session.requestId)
+
+  const kind = () => {
+    try {
+      return (JSON.parse(props.request?.content ?? "{}") as { kind?: number }).kind ?? 1
+    } catch {
+      return 1
+    }
+  }
+
+  const statusKind = (): StatusKind =>
+    aborted() ? "failed" : props.session.phase === "complete" ? "complete" : "active"
+
+  const statusLabel = () => {
+    if (aborted()) { return "Aborted" }
+    if (props.session.phase === "complete") { return "Signed" }
+    return `${phaseLabel(props.session.phase)} · ${collected()}/${threshold()} signing`
+  }
+
+  const action = (): ActionDef | undefined => {
+    progress()
+    const mine = me()
+    if (!mine || props.session.phase === "complete" || aborted()) { return undefined }
+    const p = getProgress(props.session.requestId)
+    if (p.sentRound1 || p.declined) { return undefined }
+    return {
+      acceptLabel: "Sign",
+      onAccept: () => acceptSign(props.session.requestId),
+      onDecline: m => declineSign(props.session.requestId, m || undefined),
+    }
+  }
+
+  return (
+    <SessionCard
+      title={`Signature request · ${signKindLabel(kind())}`}
+      statusKind={statusKind}
+      statusLabel={statusLabel}
+      declined={() => Object.keys(props.session.declines).length}
+      action={action}
+      body={
+        <Show when={props.request}>
+          <div class="flex flex-col gap-1">
+            <pre class="text-xs font-mono bg-gray-50 dark:bg-neutral-900 border border-gray-100 dark:border-neutral-700 rounded-lg p-2 max-h-48 overflow-auto whitespace-pre-wrap break-all text-gray-800 dark:text-neutral-200">
+              {prettyJson(props.request!.content)}
+            </pre>
+            <Show when={props.session.phase === "complete" && publishedSignature(props.session.requestId)}>
+              <span class="text-xs text-gray-400 dark:text-neutral-500 font-mono break-all">
+                signed event {publishedSignature(props.session.requestId)?.slice(0, 16)}…
+              </span>
+            </Show>
+          </div>
+        </Show>
+      }
+    />
+  )
+}
+
+// ── Sessions for one quorum, grouped (one card each), newest first ──────────────
+export default function QuorumSessions(props: { quorum: DisplayedQuorum }) {
+  const requestById = createMemo(() => {
+    const m = new Map<string, TrustedEvent>()
+    for (const e of signRequestEvents()) { m.set(e.id, e) }
+    return m
+  })
+
+  const dkg = createMemo<DkgSession | undefined>(() =>
+    dkgSessions().find(s => s.inviteId === props.quorum.inviteId))
+
+  const signing = createMemo<SigningSession[]>(() => {
+    const pk = props.quorum.quorumPubkey
+    if (!pk) { return [] }
+    return signingSessions()
+      .filter(s => s.quorumPubkey === pk)
+      .sort((a, b) =>
+        (requestById().get(b.requestId)?.created_at ?? 0) - (requestById().get(a.requestId)?.created_at ?? 0))
+  })
+
+  const resharing = createMemo<ResharingSessionView[]>(() => {
+    const pk = props.quorum.quorumPubkey
+    if (!pk) { return [] }
+    return resharingSessions().filter(s => s.quorumPubkey === pk)
+  })
+
+  const isEmpty = createMemo(() => !dkg() && signing().length === 0 && resharing().length === 0)
+
+  return (
+    <Show
+      when={!isEmpty()}
+      fallback={<p class="text-sm text-gray-400 dark:text-neutral-500">No sessions yet.</p>}
+    >
+      <div class="flex flex-col gap-3">
+        <For each={signing()}>
+          {session => <SigningSessionCard session={session} request={requestById().get(session.requestId)} />}
+        </For>
+        <For each={resharing()}>
+          {session => <ResharingSessionCard session={session} />}
+        </For>
+        <Show when={dkg()}>
+          {session => <DkgSessionCard session={session()} />}
+        </Show>
+      </div>
+    </Show>
+  )
+}
diff --git a/src/components/forms/DkgForms.tsx b/src/components/forms/DkgForms.tsx
index ed1efc3..4b284dc 100644
--- a/src/components/forms/DkgForms.tsx
+++ b/src/components/forms/DkgForms.tsx
@@ -2,7 +2,7 @@ import { createSignal, Show } from "solid-js"
 import toast from "solid-toast"
 import type { DkgSession } from "../../models"
 import PubkeyInput from "../PubkeyInput"
-import { createQuorum } from "../../quorum"
+import { createQuorum, acceptDkg, declineDkg } from "../../engine/dkg"
 import { useActivePubkey, useAutoThreshold } from "../../hooks"
 
 const inputClass =
@@ -93,19 +93,32 @@ export function ProposeQuorum(props: { onClose: () => void }) {
 }
 
 export function DkgInviteResponse(props: { session: DkgSession; onClose: () => void }) {
-  const [reason, setReason] = createSignal("")
+  const [message, setMessage] = createSignal("")
+  const [submitting, setSubmitting] = createSignal(false)
 
-  function handleAccept() {
-    console.log("DkgInviteResponse accept", { inviteId: props.session.inviteId })
-    props.onClose()
+  async function handleAccept() {
+    setSubmitting(true)
+    try {
+      // The message is posted to the quorum chat once DKG finalizes.
+      await acceptDkg(props.session.inviteId, message().trim() || undefined)
+      props.onClose()
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to accept invite")
+    } finally {
+      setSubmitting(false)
+    }
   }
 
-  function handleDecline() {
-    console.log("DkgInviteResponse decline", {
-      inviteId: props.session.inviteId,
-      reason: reason(),
-    })
-    props.onClose()
+  async function handleDecline() {
+    setSubmitting(true)
+    try {
+      await declineDkg(props.session.inviteId, message().trim() || undefined)
+      props.onClose()
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to decline invite")
+    } finally {
+      setSubmitting(false)
+    }
   }
 
   return (
@@ -123,29 +136,31 @@ export function DkgInviteResponse(props: { session: DkgSession; onClose: () => v
 
       <div class="flex flex-col gap-1">
         <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">
-          Reason (optional, shown if declining)
+          Message (optional — posted to chat on accept, or shared as a reason on decline)
         </label>
         <textarea
           class={inputClass}
           rows={3}
-          placeholder="Optional reason..."
-          value={reason()}
-          onInput={e => setReason(e.currentTarget.value)}
+          placeholder="Optional message..."
+          value={message()}
+          onInput={e => setMessage(e.currentTarget.value)}
         />
       </div>
 
       <div class="flex gap-2 justify-end">
         <button
           type="button"
-          class="px-4 py-2 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors"
+          class="px-4 py-2 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors disabled:opacity-50"
           onClick={handleDecline}
+          disabled={submitting()}
         >
           Decline
         </button>
         <button
           type="button"
-          class="px-4 py-2 text-sm font-medium rounded-lg bg-green-600 text-white hover:bg-green-700 transition-colors"
+          class="px-4 py-2 text-sm font-medium rounded-lg bg-green-600 text-white hover:bg-green-700 transition-colors disabled:opacity-50"
           onClick={handleAccept}
+          disabled={submitting()}
         >
           Accept
         </button>
diff --git a/src/components/forms/ResharingForms.tsx b/src/components/forms/ResharingForms.tsx
index 166800f..89b7fa8 100644
--- a/src/components/forms/ResharingForms.tsx
+++ b/src/components/forms/ResharingForms.tsx
@@ -1,8 +1,11 @@
 import { createSignal, Show } from "solid-js"
+import toast from "solid-toast"
 import type { ResharingSession } from "../../models"
 import PubkeyInput from "../PubkeyInput"
 import { validateMessagingRelays } from "../../lib/relays"
 import { useAutoThreshold, useProfileDisplay } from "../../hooks"
+import { proposeResharing, acceptResharing, declineResharing } from "../../engine/resharing"
+import { getQuorumRecord } from "../../engine/secrets"
 
 export function ProposeResharing(props: { quorumPubkey: string; onClose: () => void }) {
   const [newMembers, setNewMembers] = createSignal<string[]>([])
@@ -26,22 +29,36 @@ export function ProposeResharing(props: { quorumPubkey: string; onClose: () => v
       return
     }
 
-    setSubmitting(true)
-    const relayError = await validateMessagingRelays(members)
-    setSubmitting(false)
-
-    if (relayError) {
-      setError(relayError)
+    // Contributors are the current quorum members who reshare their shards. Default to
+    // all current members so the contributing set always meets the existing threshold.
+    const record = getQuorumRecord(props.quorumPubkey)
+    if (!record) {
+      setError("Quorum is not yet complete; cannot rotate keys.")
       return
     }
+    const contributors = record.members.map(m => m.pubkey)
 
-    console.log("ProposeResharing", {
-      quorumPubkey: props.quorumPubkey,
-      newMembers: members,
-      newThreshold: t,
-    })
+    setSubmitting(true)
+    try {
+      // Optimistic: a missing messaging relay is surfaced as a warning, but never blocks
+      // the rotation — the proposal is stored locally and delivered best-effort.
+      const relayError = await validateMessagingRelays(members)
+      if (relayError) {
+        toast(relayError)
+      }
 
-    props.onClose()
+      await proposeResharing({
+        quorumPubkey: props.quorumPubkey,
+        newMembers: members,
+        newThreshold: t,
+        contributors,
+      })
+      props.onClose()
+    } catch (err) {
+      setError(err instanceof Error ? err.message : "Failed to propose rotation")
+    } finally {
+      setSubmitting(false)
+    }
   }
 
   return (
@@ -101,15 +118,30 @@ export function ProposeResharing(props: { quorumPubkey: string; onClose: () => v
 
 export function ResharingInviteResponse(props: { session: ResharingSession; onClose: () => void }) {
   const quorumName = useProfileDisplay(() => props.session.quorumPubkey)
+  const [submitting, setSubmitting] = createSignal(false)
 
-  function handleParticipate() {
-    console.log("ResharingInviteResponse: participate", props.session.proposalId)
-    props.onClose()
+  async function handleParticipate() {
+    setSubmitting(true)
+    try {
+      await acceptResharing(props.session.proposalId)
+      props.onClose()
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to participate")
+    } finally {
+      setSubmitting(false)
+    }
   }
 
-  function handleDecline() {
-    console.log("ResharingInviteResponse: decline", props.session.proposalId)
-    props.onClose()
+  async function handleDecline() {
+    setSubmitting(true)
+    try {
+      await declineResharing(props.session.proposalId)
+      props.onClose()
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to decline")
+    } finally {
+      setSubmitting(false)
+    }
   }
 
   return (
@@ -133,14 +165,16 @@ export function ResharingInviteResponse(props: { session: ResharingSession; onCl
         <button
           type="button"
           onClick={handleDecline}
-          class="px-4 py-2 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors"
+          disabled={submitting()}
+          class="px-4 py-2 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors disabled:opacity-50"
         >
           Decline
         </button>
         <button
           type="button"
           onClick={handleParticipate}
-          class="px-4 py-2 text-sm font-medium rounded-lg bg-green-600 text-white hover:bg-green-700 transition-colors"
+          disabled={submitting()}
+          class="px-4 py-2 text-sm font-medium rounded-lg bg-green-600 text-white hover:bg-green-700 transition-colors disabled:opacity-50"
         >
           Participate
         </button>
diff --git a/src/components/forms/SigningForms.tsx b/src/components/forms/SigningForms.tsx
index 1f8265a..0a4a85b 100644
--- a/src/components/forms/SigningForms.tsx
+++ b/src/components/forms/SigningForms.tsx
@@ -1,97 +1,444 @@
-import { createSignal } from "solid-js"
+import { createSignal, createMemo, For, Index, Show, onMount } from "solid-js"
+import toast from "solid-toast"
+import { RelayMode } from "@welshman/util"
+import { derivePubkeyRelays, loadProfile } from "@welshman/app"
 import type { SigningSession } from "../../models"
 import { displayedQuora } from "../../store"
-import { validateMessagingRelays } from "../../lib/relays"
+import { requestSignature, acceptSign, declineSign } from "../../engine/signing"
+import { signRequestEvents } from "../../engine/events"
+import { useReadable } from "../../lib/stores"
+
+const inputClass =
+  "w-full px-3 py-2 text-sm border border-gray-200 dark:border-neutral-600 rounded-lg bg-white dark:bg-neutral-800 text-gray-900 dark:text-white focus:outline-none focus:ring-2 focus:ring-blue-500"
+
+const primaryButtonClass =
+  "px-4 py-2 text-sm font-medium rounded-lg bg-blue-600 text-white hover:bg-blue-700 transition-colors"
+
+const secondaryButtonClass =
+  "px-4 py-2 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors"
+
+const declineButtonClass =
+  "px-4 py-2 text-sm font-medium rounded-lg bg-green-600 text-white hover:bg-green-700 transition-colors"
+
+type EventKind = 1 | 10002 | 0
+type Mode = EventKind | "custom"
+type EventTemplate = { kind: number; tags: string[][]; content: string }
+
+const modeOptions: { mode: Mode; label: string; description: string }[] = [
+  { mode: 1, label: "Public Note", description: "A kind 1 text note published as the quorum." },
+  { mode: 10002, label: "Relay Selections", description: "A kind 10002 outbox/inbox relay list." },
+  { mode: 0, label: "Profile", description: "A kind 0 metadata event describing the quorum." },
+  { mode: "custom", label: "Custom JSON", description: "Paste a raw event template (kind, tags, content) to sign." },
+]
+
+/** A single relay row for the kind 10002 editor. */
+type RelayRow = { url: string; read: boolean; write: boolean }
+
+/** Validate a pasted event template, returning a normalized {kind, tags, content} or an error. */
+function parseCustomTemplate(json: string): { template?: EventTemplate; error?: string } {
+  let parsed: unknown
+  try {
+    parsed = JSON.parse(json)
+  } catch {
+    return { error: "Invalid JSON." }
+  }
+  if (typeof parsed !== "object" || parsed === null || Array.isArray(parsed)) {
+    return { error: "Expected a JSON object." }
+  }
+  const obj = parsed as Record<string, unknown>
+  if (typeof obj.kind !== "number" || !Number.isInteger(obj.kind) || obj.kind < 0) {
+    return { error: 'Missing or invalid "kind" (a non-negative integer).' }
+  }
+  const content = obj.content ?? ""
+  if (typeof content !== "string") {
+    return { error: '"content" must be a string.' }
+  }
+  const tags = obj.tags ?? []
+  if (!Array.isArray(tags) || !tags.every(t => Array.isArray(t) && t.every(x => typeof x === "string"))) {
+    return { error: '"tags" must be an array of string arrays.' }
+  }
+  return { template: { kind: obj.kind, tags: tags as string[][], content } }
+}
 
 export function ProposeSign(props: { quorumPubkey: string; onClose: () => void }) {
-  const [message, setMessage] = createSignal("")
+  const [mode, setMode] = createSignal<Mode>(1)
+  const [note, setNote] = createSignal("")
+  const [relays, setRelays] = createSignal<RelayRow[]>([{ url: "", read: true, write: true }])
+  const [name, setName] = createSignal("")
+  const [about, setAbout] = createSignal("")
+  const [picture, setPicture] = createSignal("")
+  const [nip05, setNip05] = createSignal("")
+  const [customJson, setCustomJson] = createSignal("")
   const [error, setError] = createSignal("")
   const [submitting, setSubmitting] = createSignal(false)
 
-  const memberPubkeys = () =>
-    displayedQuora().find(q => q.quorumPubkey === props.quorumPubkey)?.members.map(m => m.pubkey) ?? []
+  const quorum = createMemo(() =>
+    displayedQuora().find(q => q.quorumPubkey === props.quorumPubkey))
 
-  async function handleSubmit() {
-    if (!message().trim()) {
-      setError("Message is required.")
+  // Background-load the quorum's profile and relay lists; warn when it has no outbox relays,
+  // since a signed event would then have nowhere to be published.
+  onMount(() => { if (props.quorumPubkey) { loadProfile(props.quorumPubkey) } })
+  const outboxRelays = useReadable(derivePubkeyRelays(props.quorumPubkey, RelayMode.Write))
+  const noRelays = () => Boolean(props.quorumPubkey) && outboxRelays().length === 0
+
+  function updateRelay(i: number, patch: Partial<RelayRow>) {
+    setRelays(rs => rs.map((r, idx) => (idx === i ? { ...r, ...patch } : r)))
+  }
+
+  function addRelay() {
+    setRelays(rs => [...rs, { url: "", read: true, write: true }])
+  }
+
+  function removeRelay(i: number) {
+    setRelays(rs => rs.filter((_, idx) => idx !== i))
+  }
+
+  function composeTemplate(): { template?: EventTemplate; error?: string } {
+    const m = mode()
+    if (m === "custom") {
+      if (!customJson().trim()) { return { error: "Paste an event JSON." } }
+      return parseCustomTemplate(customJson())
+    }
+    if (m === 1) {
+      if (!note().trim()) { return { error: "Note content is required." } }
+      return { template: { kind: 1, tags: [], content: note() } }
+    }
+    if (m === 10002) {
+      const rows = relays().filter(r => r.url.trim())
+      if (!rows.length) { return { error: "Add at least one relay." } }
+      const tags = rows.map(r => {
+        const tag = ["r", r.url.trim()]
+        // Per NIP-65: omit the marker when both read+write, else mark the direction.
+        if (r.read && !r.write) { tag.push("read") }
+        if (r.write && !r.read) { tag.push("write") }
+        return tag
+      })
+      return { template: { kind: 10002, tags, content: "" } }
+    }
+    const meta: Record<string, string> = {}
+    if (name().trim()) { meta.name = name().trim() }
+    if (about().trim()) { meta.about = about().trim() }
+    if (picture().trim()) { meta.picture = picture().trim() }
+    if (nip05().trim()) { meta.nip05 = nip05().trim() }
+    if (!Object.keys(meta).length) { return { error: "Fill in at least one profile field." } }
+    return { template: { kind: 0, tags: [], content: JSON.stringify(meta) } }
+  }
+
+  async function handleSubmit(e: Event) {
+    e.preventDefault()
+
+    if (!props.quorumPubkey) {
+      setError("This quorum is not complete yet.")
+      return
+    }
+
+    const { template, error: buildError } = composeTemplate()
+    if (!template) {
+      setError(buildError ?? "Invalid event.")
       return
     }
 
     setError("")
     setSubmitting(true)
-    const relayError = await validateMessagingRelays(memberPubkeys())
-    setSubmitting(false)
-
-    if (relayError) {
-      setError(relayError)
-      return
+    try {
+      // Optimistic: the request is stored and shown immediately even if no member
+      // is reachable. requestSignature does not hard-fail on undeliverability.
+      await requestSignature(props.quorumPubkey, template)
+      props.onClose()
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to request signature")
+    } finally {
+      setSubmitting(false)
     }
+  }
 
-    console.log({ quorumPubkey: props.quorumPubkey, message: message() })
-    props.onClose()
+  return (
+    <form onSubmit={handleSubmit} class="flex flex-col gap-4">
+      <h2 class="text-lg font-semibold text-gray-900 dark:text-white">Sign Event</h2>
+
+      <Show when={noRelays()}>
+        <div class="rounded-lg border border-amber-300 dark:border-amber-700 bg-amber-50 dark:bg-amber-950/50 px-3 py-2">
+          <p class="text-xs text-amber-800 dark:text-amber-300">
+            This quorum has no relays set, so its signed events can't be published anywhere. Sign a
+            “Relay Selections” (kind 10002) event for the quorum first to give it an outbox.
+          </p>
+        </div>
+      </Show>
+
+      <div class="flex flex-col gap-1.5">
+        <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">Event Kind</label>
+        <div class="grid grid-cols-2 gap-2">
+          <For each={modeOptions}>
+            {opt => (
+              <button
+                type="button"
+                onClick={() => setMode(opt.mode)}
+                class={`px-3 py-2 text-sm font-medium rounded-lg border transition-colors ${
+                  mode() === opt.mode
+                    ? "border-blue-600 bg-blue-50 text-blue-700 dark:bg-blue-950 dark:text-blue-300"
+                    : "border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700"
+                }`}
+              >
+                {opt.label}
+              </button>
+            )}
+          </For>
+        </div>
+        <p class="text-xs text-gray-400 dark:text-neutral-500">
+          {modeOptions.find(o => o.mode === mode())?.description}
+        </p>
+      </div>
+
+      <Show when={mode() === 1}>
+        <div class="flex flex-col gap-1">
+          <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">Note</label>
+          <textarea
+            rows={4}
+            class={inputClass}
+            placeholder="What's on the quorum's mind?"
+            value={note()}
+            onInput={e => setNote(e.currentTarget.value)}
+          />
+        </div>
+      </Show>
+
+      <Show when={mode() === 10002}>
+        <div class="flex flex-col gap-2">
+          <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">Relays</label>
+          <Index each={relays()}>
+            {(relay, i) => (
+              <div class="flex items-center gap-2">
+                <input
+                  type="text"
+                  class={inputClass}
+                  placeholder="wss://relay.example.com"
+                  value={relay().url}
+                  onInput={e => updateRelay(i, { url: e.currentTarget.value })}
+                />
+                <label class="flex items-center gap-1 text-xs text-gray-600 dark:text-neutral-400">
+                  <input
+                    type="checkbox"
+                    checked={relay().read}
+                    onChange={e => updateRelay(i, { read: e.currentTarget.checked })}
+                  />
+                  Read
+                </label>
+                <label class="flex items-center gap-1 text-xs text-gray-600 dark:text-neutral-400">
+                  <input
+                    type="checkbox"
+                    checked={relay().write}
+                    onChange={e => updateRelay(i, { write: e.currentTarget.checked })}
+                  />
+                  Write
+                </label>
+                <button
+                  type="button"
+                  class="text-sm text-gray-400 hover:text-red-500 px-1"
+                  onClick={() => removeRelay(i)}
+                  aria-label="Remove relay"
+                >
+                  ✕
+                </button>
+              </div>
+            )}
+          </Index>
+          <button
+            type="button"
+            class="self-start text-sm text-blue-600 hover:text-blue-700"
+            onClick={addRelay}
+          >
+            + Add relay
+          </button>
+        </div>
+      </Show>
+
+      <Show when={mode() === 0}>
+        <div class="flex flex-col gap-2">
+          <div class="flex flex-col gap-1">
+            <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">Name</label>
+            <input
+              type="text"
+              class={inputClass}
+              value={name()}
+              onInput={e => setName(e.currentTarget.value)}
+            />
+          </div>
+          <div class="flex flex-col gap-1">
+            <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">About</label>
+            <textarea
+              rows={2}
+              class={inputClass}
+              value={about()}
+              onInput={e => setAbout(e.currentTarget.value)}
+            />
+          </div>
+          <div class="flex flex-col gap-1">
+            <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">
+              Picture URL
+            </label>
+            <input
+              type="text"
+              class={inputClass}
+              value={picture()}
+              onInput={e => setPicture(e.currentTarget.value)}
+            />
+          </div>
+          <div class="flex flex-col gap-1">
+            <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">NIP-05</label>
+            <input
+              type="text"
+              class={inputClass}
+              value={nip05()}
+              onInput={e => setNip05(e.currentTarget.value)}
+            />
+          </div>
+        </div>
+      </Show>
+
+      <Show when={mode() === "custom"}>
+        <div class="flex flex-col gap-1">
+          <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">Event JSON</label>
+          <textarea
+            rows={8}
+            class={`${inputClass} font-mono`}
+            placeholder={'{\n  "kind": 1,\n  "tags": [],\n  "content": "gm"\n}'}
+            value={customJson()}
+            onInput={e => setCustomJson(e.currentTarget.value)}
+          />
+          <p class="text-xs text-gray-400 dark:text-neutral-500">
+            Provide kind, tags, and content. The quorum's pubkey and created_at are filled in automatically.
+          </p>
+        </div>
+      </Show>
+
+      <p class="text-xs text-gray-400 dark:text-neutral-500">
+        {quorum()
+          ? `Requires ${quorum()!.threshold} of ${quorum()!.members.length} members to sign.`
+          : "Loading quorum…"}
+      </p>
+
+      <Show when={error()}>
+        <p class="text-sm text-red-600 dark:text-red-400">{error()}</p>
+      </Show>
+
+      <div class="flex gap-2 justify-end">
+        <button type="button" class={secondaryButtonClass} onClick={props.onClose}>
+          Cancel
+        </button>
+        <button type="submit" class={primaryButtonClass} disabled={submitting()}>
+          {submitting() ? "Requesting…" : "Request Signature"}
+        </button>
+      </div>
+    </form>
+  )
+}
+
+function signKindLabel(kind: number): string {
+  if (kind === 1) { return "Public Note" }
+  if (kind === 10002) { return "Relay Selections" }
+  if (kind === 0) { return "Profile" }
+  return `Kind ${kind}`
+}
+
+export function SignRequestResponse(props: { session: SigningSession; onClose: () => void }) {
+  const [reason, setReason] = createSignal("")
+  const [submitting, setSubmitting] = createSignal(false)
+
+  const quorum = createMemo(() =>
+    displayedQuora().find(q => q.quorumPubkey === props.session.quorumPubkey))
+
+  const threshold = () => quorum()?.threshold ?? props.session.signingSet.length
+  const collected = () => Object.keys(props.session.round1).length
+
+  // Derive the unsigned event's kind from the kind-7058 request content.
+  const requestKind = createMemo(() => {
+    const req = signRequestEvents().find(e => e.id === props.session.requestId)
+    if (!req) { return undefined }
+    try {
+      return (JSON.parse(req.content) as { kind?: number }).kind
+    } catch {
+      return undefined
+    }
+  })
+
+  async function handleSign() {
+    setSubmitting(true)
+    try {
+      await acceptSign(props.session.requestId)
+      props.onClose()
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to sign")
+    } finally {
+      setSubmitting(false)
+    }
+  }
+
+  async function handleDecline() {
+    setSubmitting(true)
+    try {
+      await declineSign(props.session.requestId, reason().trim() || undefined)
+      props.onClose()
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to decline")
+    } finally {
+      setSubmitting(false)
+    }
   }
 
-  return (
-    <div class="flex flex-col gap-4">
-      <h2 class="text-base font-semibold text-gray-900 dark:text-white">Request Signature</h2>
-      <textarea
-        rows={4}
-        class="w-full px-3 py-2 text-sm border border-gray-200 dark:border-neutral-600 rounded-lg bg-white dark:bg-neutral-800 text-gray-900 dark:text-white focus:outline-none focus:ring-2 focus:ring-blue-500"
-        value={message()}
-        onInput={e => setMessage(e.currentTarget.value)}
-      />
-      {error() && (
-        <p class="text-sm text-red-600 dark:text-red-400">{error()}</p>
-      )}
-      <div class="flex gap-2 justify-end">
-        <button
-          type="button"
-          class="px-4 py-2 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors"
-          onClick={props.onClose}
-        >
-          Cancel
-        </button>
-        <button
-          type="button"
-          disabled={submitting()}
-          class="px-4 py-2 text-sm font-medium rounded-lg bg-blue-600 text-white hover:bg-blue-700 transition-colors"
-          onClick={handleSubmit}
-        >
-          {submitting() ? "Checking…" : "Request Signature"}
-        </button>
-      </div>
-    </div>
-  )
-}
-
-export function SignRequestResponse(props: { session: SigningSession; onClose: () => void }) {
   return (
     <div class="flex flex-col gap-4">
       <h2 class="text-base font-semibold text-gray-900 dark:text-white">Signature Request</h2>
+
+      <Show when={requestKind() !== undefined}>
+        <div class="flex flex-col gap-1">
+          <span class="text-xs text-gray-500 dark:text-neutral-400">Event</span>
+          <span class="text-sm text-gray-900 dark:text-white">
+            {signKindLabel(requestKind()!)}
+          </span>
+        </div>
+      </Show>
+
       <div class="flex flex-col gap-1">
         <span class="text-xs text-gray-500 dark:text-neutral-400">Message hash</span>
         <span class="font-mono text-sm text-gray-900 dark:text-white">
-          {props.session.msgHex.slice(0, 16)}
+          {props.session.msgHex.slice(0, 16)}…
         </span>
       </div>
+
       <div class="flex flex-col gap-1">
-        <span class="text-xs text-gray-500 dark:text-neutral-400">Signing set</span>
+        <span class="text-xs text-gray-500 dark:text-neutral-400">Collected</span>
         <span class="text-sm text-gray-900 dark:text-white">
-          {props.session.signingSet.length} members
+          {collected()} / {threshold()} signers
         </span>
       </div>
+
+      <div class="flex flex-col gap-1">
+        <label class="text-sm font-medium text-gray-700 dark:text-neutral-300">
+          Reason (optional, shown if declining)
+        </label>
+        <textarea
+          class={inputClass}
+          rows={3}
+          placeholder="Optional reason…"
+          value={reason()}
+          onInput={e => setReason(e.currentTarget.value)}
+        />
+      </div>
+
       <div class="flex gap-2 justify-end">
         <button
           type="button"
-          class="px-4 py-2 text-sm font-medium rounded-lg border border-gray-200 dark:border-neutral-600 text-gray-700 dark:text-neutral-300 hover:bg-gray-50 dark:hover:bg-neutral-700 transition-colors"
-          onClick={props.onClose}
+          class={secondaryButtonClass}
+          disabled={submitting()}
+          onClick={handleDecline}
         >
           Decline
         </button>
         <button
           type="button"
-          class="px-4 py-2 text-sm font-medium rounded-lg bg-green-600 text-white hover:bg-green-700 transition-colors"
-          onClick={props.onClose}
+          class={declineButtonClass}
+          disabled={submitting()}
+          onClick={handleSign}
         >
           Sign
         </button>
diff --git a/src/components/tabs/QuorumLog.tsx b/src/components/tabs/QuorumLog.tsx
index 1069f06..2df7b26 100644
--- a/src/components/tabs/QuorumLog.tsx
+++ b/src/components/tabs/QuorumLog.tsx
@@ -1,73 +1,28 @@
-import { createSignal, createEffect, onCleanup, For } from "solid-js"
-import type { TrustedEvent, Filter } from "@welshman/util"
-import { repository } from "@welshman/app"
-import { deriveEvents } from "@welshman/store"
+import { createEffect, Show } from "solid-js"
 import { activeQuorum } from "../../store"
-import { PROTOCOL_KINDS } from "../../protocol"
-
-function kindLabel(kind: number): string {
-  if (kind === 7050) { return "DKG Invite" }
-  if (kind === 7051) { return "DKG Round 1" }
-  if (kind === 7052) { return "DKG Round 2" }
-  if (kind === 7053) { return "DKG Complete" }
-  if (kind === 7054) { return "Resharing Proposed" }
-  if (kind === 7055) { return "Resharing Round 1" }
-  if (kind === 7056) { return "Resharing Round 2" }
-  if (kind === 7057) { return "Rotation Complete" }
-  if (kind === 7058) { return "Sign Request" }
-  if (kind === 7059) { return "Signing Round 1" }
-  if (kind === 7060) { return "Signing Round 2" }
-  if (kind === 7061) { return "Declined" }
-  return `Event ${kind}`
-}
-
-function relativeTime(createdAt: number): string {
-  const now = Math.floor(Date.now() / 1000)
-  const age = now - createdAt
-  if (age < 60) { return `${age}s ago` }
-  if (age < 3600) { return `${Math.floor(age / 60)}m ago` }
-  if (age < 86400) { return `${Math.floor(age / 3600)}h ago` }
-  return `${Math.floor(age / 86400)}d ago`
-}
+import { markTabViewed } from "../../engine/notifications"
+import { dkgSessions } from "../../engine/dkg"
+import { signingSessions } from "../../engine/signing"
+import { resharingSessions } from "../../engine/resharing"
+import QuorumSessions from "../QuorumSessions"
 
 export default function QuorumLog() {
-  const [events, setEvents] = createSignal<TrustedEvent[]>([])
-
+  // Mark the log read while it is on screen. Touch the session signals so this re-runs (and
+  // re-marks read) as activity arrives, keeping the tab read until the user navigates away.
   createEffect(() => {
     const quorum = activeQuorum()
-    if (!quorum) { setEvents([]); return }
-    // Completed quora tag events with their pubkey; a pending invite is referenced by
-    // its id (the invite event itself, plus round-1/decline events that "e"-tag it).
-    const filters: Filter[] = quorum.quorumPubkey
-      ? [{ kinds: PROTOCOL_KINDS, "#quorum": [quorum.quorumPubkey] }]
-      : [{ kinds: PROTOCOL_KINDS, "#e": [quorum.inviteId] }, { ids: [quorum.inviteId] }]
-    const store = deriveEvents({ repository, filters })
-    onCleanup(store.subscribe(evs =>
-      setEvents(() => [...evs].sort((a, b) => b.created_at - a.created_at))))
+    if (!quorum) { return }
+    dkgSessions()
+    signingSessions()
+    resharingSessions()
+    markTabViewed(quorum.inviteId, "log")
   })
 
   return (
     <div class="p-4">
-      <For
-        each={events()}
-        fallback={<p class="text-sm text-gray-400 dark:text-neutral-500">No events yet.</p>}
-      >
-        {(event) => (
-          <div class="flex items-center justify-between py-2 border-b border-gray-100 dark:border-neutral-700 last:border-b-0">
-            <div class="flex flex-col">
-              <span class="text-sm font-medium text-gray-900 dark:text-white">
-                {kindLabel(event.kind)}
-              </span>
-              <span class="text-xs text-gray-400 dark:text-neutral-500 font-mono">
-                {event.id.slice(0, 8)}
-              </span>
-            </div>
-            <span class="text-xs text-gray-400 dark:text-neutral-500 ml-4 shrink-0">
-              {relativeTime(event.created_at)}
-            </span>
-          </div>
-        )}
-      </For>
+      <Show when={activeQuorum()}>
+        {q => <QuorumSessions quorum={q()} />}
+      </Show>
     </div>
   )
 }
diff --git a/src/components/tabs/QuorumMembers.tsx b/src/components/tabs/QuorumMembers.tsx
index f8fda5d..fb86c4a 100644
--- a/src/components/tabs/QuorumMembers.tsx
+++ b/src/components/tabs/QuorumMembers.tsx
@@ -1,6 +1,7 @@
-import { createSignal, Show, For } from "solid-js"
+import { createSignal, createEffect, Show, For } from "solid-js"
 import { activeQuorum } from "../../store"
 import { useProfileDisplay } from "../../hooks"
+import { markTabViewed } from "../../engine/notifications"
 import type { QuorumMember } from "../../protocol"
 
 function MemberRow(props: { member: QuorumMember; copied: boolean; onCopy: () => void }) {
@@ -29,6 +30,12 @@ function MemberRow(props: { member: QuorumMember; copied: boolean; onCopy: () =>
 export default function QuorumMembers() {
   const [copiedIndex, setCopiedIndex] = createSignal<number | null>(null)
 
+  // Mark the members tab read while it is on screen.
+  createEffect(() => {
+    const q = activeQuorum()
+    if (q) { markTabViewed(q.inviteId, "members") }
+  })
+
   function copyPubkey(m: QuorumMember) {
     navigator.clipboard.writeText(m.pubkey)
     setCopiedIndex(m.index)
diff --git a/src/engine/chat.ts b/src/engine/chat.ts
new file mode 100644
index 0000000..66524b5
--- /dev/null
+++ b/src/engine/chat.ts
@@ -0,0 +1,88 @@
+import { createSignal } from "solid-js"
+import { Nip59, Nip01Signer } from "@welshman/signer"
+import {
+  pubkey,
+  signer,
+  repository,
+  publishThunk,
+  getMessagingRelayList,
+  loadMessagingRelayList,
+} from "@welshman/app"
+import { deriveEvents } from "@welshman/store"
+import { makeEvent, prep, getRelaysFromList, getTagValue } from "@welshman/util"
+import type { TrustedEvent, HashedEvent } from "@welshman/util"
+import { Router } from "@welshman/router"
+
+// ── NIP-17 group chat among quorum members ─────────────────────────────────────
+// Members exchange kind-14 chat messages under their OWN pubkeys, gift-wrapped per
+// NIP-17 (kind 1059) to every member. This is ordinary NIP-17 — it does NOT depend on
+// the quorum's FROST key, so members can chat while a DKG is still pending: the member
+// set is known from the invite from the start. Messages carry NO ["t","b7ed"] topic tag
+// (they are not protocol events); they are tagged with the quorum thread id for grouping.
+
+const CHAT_KIND = 14
+
+function inboxRelays(recipient: string): string[] {
+  const relays = getRelaysFromList(getMessagingRelayList(recipient))
+  return relays.length ? relays : Router.get().ForPubkey(recipient).getUrls()
+}
+
+/** Gift-wrap a kind-14 rumor to one member (no b7ed topic) and publish to their inbox relays. */
+async function wrapTo(recipient: string, rumor: HashedEvent): Promise<void> {
+  const $signer = signer.get()
+  if (!$signer) { throw new Error("Cannot send without a signer") }
+  await loadMessagingRelayList(recipient).catch(() => undefined)
+  const nip59 = new Nip59($signer, Nip01Signer.ephemeral())
+  const wrap = await nip59.wrap(recipient, rumor)
+  publishThunk({ event: wrap, relays: inboxRelays(recipient) })
+}
+
+/**
+ * Send a chat message to a quorum's members. Plain NIP-17 — works whether or not the
+ * quorum's key exists yet. `threadId` is the quorum's stable thread id (its pubkey once
+ * established, otherwise the invite id); `members` are the known member pubkeys (available
+ * from the invite even before the DKG completes). We store a local copy immediately and
+ * gift-wrap one copy to every member except ourselves.
+ */
+export async function sendChatMessage(threadId: string, members: string[], text: string): Promise<void> {
+  const me = pubkey.get()
+  if (!me) { throw new Error("You must be logged in to send a message") }
+
+  const recipients = members.length ? members : [me]
+  const rumor = prep(makeEvent(CHAT_KIND, {
+    content: text,
+    tags: [["quorum", threadId], ...recipients.map(m => ["p", m])],
+  }), me)
+
+  // Optimistic local copy so our own message renders without a network round-trip.
+  repository.publish(rumor)
+
+  await Promise.all(
+    recipients
+      .filter(m => m !== me)
+      .map(m => wrapTo(m, rumor).catch(e => console.error("chat deliver failed", m, e))),
+  )
+}
+
+// ── Repository-derived chat signal ─────────────────────────────────────────────
+// One app-lifetime subscription over all kind-14 events (inbound unwrapped rumors +
+// our own local copies); chatMessages filters to the requested thread on read.
+const [allChat, setAllChat] = createSignal<TrustedEvent[]>([])
+deriveEvents({ repository, filters: [{ kinds: [CHAT_KIND] }] }).subscribe(setAllChat)
+
+/**
+ * Kind-14 messages for a quorum, sorted ascending by created_at. Pass every id the thread
+ * may be tagged with — typically [inviteId, quorumPubkey] — so the conversation stays
+ * continuous across the moment the quorum's pubkey comes into existence (messages sent
+ * while pending are tagged with the invite id; later ones with the quorum pubkey).
+ */
+export function chatMessages(threadIds: string[]): TrustedEvent[] {
+  const ids = new Set(threadIds.filter(Boolean))
+  if (!ids.size) { return [] }
+  return allChat()
+    .filter(e => {
+      const q = getTagValue("quorum", e.tags)
+      return q !== undefined && ids.has(q)
+    })
+    .sort((a, b) => a.created_at - b.created_at)
+}
diff --git a/src/engine/delivery.ts b/src/engine/delivery.ts
new file mode 100644
index 0000000..98661eb
--- /dev/null
+++ b/src/engine/delivery.ts
@@ -0,0 +1,35 @@
+import { Nip59, Nip01Signer } from "@welshman/signer"
+import { signer, repository, publishThunk, getMessagingRelayList } from "@welshman/app"
+import { getRelaysFromList } from "@welshman/util"
+import type { HashedEvent } from "@welshman/util"
+import { Router } from "@welshman/router"
+
+const TOPIC = "b7ed"
+
+// TODO: PROTOCOL.md §Event Kinds requires at least 16 bits of proof-of-work (NIP-13)
+// on each kind 1059 gift wrap. PoW is out of scope for this pass; the ["t","b7ed"]
+// topic tag below IS required and is always present.
+
+function inboxRelays(pubkey: string): string[] {
+  const relays = getRelaysFromList(getMessagingRelayList(pubkey))
+  return relays.length ? relays : Router.get().ForPubkey(pubkey).getUrls()
+}
+
+/** Gift-wrap a rumor to one recipient (with the b7ed topic tag) and publish to their inbox relays. */
+export async function deliverTo(recipient: string, rumor: HashedEvent): Promise<void> {
+  const $signer = signer.get()
+  if (!$signer) { throw new Error("Cannot send without a signer") }
+  const nip59 = new Nip59($signer, Nip01Signer.ephemeral())
+  const wrap = await nip59.wrap(recipient, rumor, [["t", TOPIC]])
+  publishThunk({ event: wrap, relays: inboxRelays(recipient) })
+}
+
+/**
+ * Broadcast one rumor to many recipients. Stores a local copy in the repository (so our own derived
+ * state reflects what we sent) unless storeLocal is false. Per-recipient payloads (round-2 shares) call
+ * deliverTo directly with storeLocal handled by the caller. Recipients should EXCLUDE self.
+ */
+export async function sendProtocolEvent(rumor: HashedEvent, recipients: string[], opts: { storeLocal?: boolean } = {}): Promise<void> {
+  if (opts.storeLocal !== false) { repository.publish(rumor) }
+  await Promise.all(recipients.map(r => deliverTo(r, rumor).catch(e => console.error("deliver failed", r, e))))
+}
diff --git a/src/engine/dkg.ts b/src/engine/dkg.ts
new file mode 100644
index 0000000..9ae1890
--- /dev/null
+++ b/src/engine/dkg.ts
@@ -0,0 +1,517 @@
+import { createEffect, createSignal } from "solid-js"
+import { toast } from "solid-toast"
+import { pubkey, signer, loadMessagingRelayList } from "@welshman/app"
+import { getTagValue } from "@welshman/util"
+import type { TrustedEvent } from "@welshman/util"
+import {
+  assignIndices,
+  createInvite,
+  dkgRound1,
+  verifyRound1,
+  dkgRound2,
+  dkgFinalize,
+  dkgConfirm,
+  createDecline,
+} from "../protocol"
+import type { Hex, QuorumMember } from "../protocol"
+import { encryptPoly, decryptPoly } from "../models"
+import type { DkgSession, Round1Data } from "../models"
+import { sendProtocolEvent, deliverTo } from "./delivery"
+import { sendChatMessage } from "./chat"
+import {
+  inviteEvents,
+  dkgRound1Events,
+  dkgRound2Events,
+  dkgConfirmEvents,
+  declineEvents,
+  sessionId,
+  commitsOf,
+  proofOf,
+  shareOf,
+  membersOf,
+  thresholdOf,
+  quorumOf,
+  reasonOf,
+  latestByAuthor,
+} from "./events"
+import {
+  getProgress,
+  patchProgress,
+  saveQuorum,
+  sessionProgress,
+} from "./secrets"
+import { openQuorum, setDelivery } from "../store"
+
+// ── Active pubkey, bridged to a Solid signal ───────────────────────────────────
+// Mirrors the store.ts pattern: module-scope signals fed by welshman stores so the
+// derivation re-runs reactively as the session/identity changes.
+const [me, setMe] = createSignal("")
+pubkey.subscribe(pk => setMe(pk ?? ""))
+
+// Progress lives in localStorage (a svelte store), not a Solid signal, so changes to
+// it must explicitly retrigger derivation. Bumping this tick on every progress write
+// makes dkgSessions() recompute when a flag flips (e.g. after a guarded send).
+const [progressTick, setProgressTick] = createSignal(0)
+sessionProgress.subscribe(() => setProgressTick(n => n + 1))
+
+// ── Session-state derivation ───────────────────────────────────────────────────
+// A DKG session is a pure function of the 7050 invite, the 7051/7052/7053/7061 events
+// referencing it, and our persisted progress. It tolerates duplicate / out-of-order
+// events: dedupe is by-author (latest wins) and prerequisites are checked explicitly,
+// never by arrival order.
+
+function eventsForInvite(events: TrustedEvent[], inviteId: string): TrustedEvent[] {
+  return events.filter(e => sessionId(e) === inviteId)
+}
+
+function deriveDkgSessions(mine: string): DkgSession[] {
+  // Read every accessor up-front so this function tracks them reactively.
+  const invites = inviteEvents()
+  const r1Events = dkgRound1Events()
+  const r2Events = dkgRound2Events()
+  const confirmEvents = dkgConfirmEvents()
+  const declined = declineEvents()
+
+  const sessions: DkgSession[] = []
+
+  for (const inv of invites) {
+    const inviteId = inv.id
+    const members = membersOf(inv)
+
+    // Only build a session if I'm a participant (same predicate as displayedQuora).
+    if (inv.pubkey !== mine && !members.includes(mine)) { continue }
+
+    const threshold = thresholdOf(inv)
+    const indexed = assignIndices(members)
+    const ownIndex = indexed.find(m => m.pubkey === mine)?.index
+    const p = getProgress(inviteId)
+
+    // ── Round 1: one entry per author, keyed by pubkey; only members count. ──
+    const round1: Record<Hex, Round1Data> = {}
+    for (const e of latestByAuthor(eventsForInvite(r1Events, inviteId)).values()) {
+      if (!members.includes(e.pubkey)) { continue }
+      const proof = proofOf(e)
+      if (!proof) { continue }
+      round1[e.pubkey] = { commitments: commitsOf(e), proof }
+    }
+
+    // ── Round 2: shares OTHERS sent to us, keyed by the SENDER's index. ──
+    // Every 7052 in the repository for our sessions was unwrapped from a gift wrap
+    // addressed to us, and our own outgoing 7052 are per-recipient (not stored
+    // locally), so this holds only peers' shares to us — exactly what finalize needs.
+    const round2: Record<number, Hex> = {}
+    for (const e of latestByAuthor(eventsForInvite(r2Events, inviteId)).values()) {
+      const senderIndex = indexed.find(m => m.pubkey === e.pubkey)?.index
+      if (senderIndex === undefined) { continue }
+      const share = shareOf(e)
+      if (share === undefined) { continue }
+      round2[senderIndex] = share
+    }
+
+    // ── Declines: informational; only members count. ──
+    const declines: Record<Hex, string> = {}
+    for (const e of latestByAuthor(eventsForInvite(declined, inviteId)).values()) {
+      if (!members.includes(e.pubkey)) { continue }
+      declines[e.pubkey] = reasonOf(e)
+    }
+
+    // ── Confirmations: count distinct matching authors (for completion + display). ──
+    const confirms = [...latestByAuthor(eventsForInvite(confirmEvents, inviteId)).values()]
+      .filter(e => members.includes(e.pubkey))
+    const confirmed = confirms.length
+
+    const aborted = Boolean(p.aborted) || isEquivocated(inviteId, members)
+    // Local completion is independent of peers' confirmations: we are "complete" the
+    // moment we finalized and saved our shard.
+    const complete = Boolean(p.finalized)
+
+    // ── Phase (a display hint; the coordinator branches on raw flags, not this). ──
+    let phase: DkgSession["phase"]
+    if (complete && confirmed >= members.length) {
+      phase = "complete"
+    } else if (p.sentConfirm || p.finalized || confirms.length > 0) {
+      phase = "confirming"
+    } else if (p.sentRound2) {
+      phase = "round2"
+    } else {
+      phase = "round1"
+    }
+
+    sessions.push({
+      inviteId,
+      members,
+      threshold,
+      phase,
+      myCommitments: round1[mine]?.commitments,
+      myEncryptedPoly: p.encryptedPoly,
+      round1,
+      round2,
+      declines,
+      aborted,
+      complete,
+      confirmed,
+      // ownIndex is part of the working set the coordinator needs; surface it on the
+      // view object (DkgSession allows it structurally via the indexer below).
+      ...(ownIndex !== undefined ? { ownIndex } : {}),
+    } as DkgSession & { ownIndex?: number })
+  }
+
+  // Newest invite first, matching displayedQuora's ordering.
+  return sessions.sort((a, b) => {
+    const ca = invites.find(e => e.id === a.inviteId)?.created_at ?? 0
+    const cb = invites.find(e => e.id === b.inviteId)?.created_at ?? 0
+    return cb - ca
+  })
+}
+
+/** Reactive DKG session views. Tracks repository events + progress when read in an effect/memo. */
+export function dkgSessions(): DkgSession[] {
+  progressTick() // create a dependency so flag changes re-derive
+  const mine = me()
+  if (!mine) { return [] }
+  return deriveDkgSessions(mine)
+}
+
+// ── Equivocation detection ─────────────────────────────────────────────────────
+// PROTOCOL.md: if any two confirmations for one invite carry a different transcript
+// or quorum, all participants must abort. Our own 7053 is stored locally, so its
+// values are naturally in this set — covering local-vs-peer divergence too.
+// Only confirmations from actual members count: a relay/attacker can deliver a spoofed
+// 7053 from a non-member referencing our inviteId; counting it would let an outsider
+// force a false abort (DoS). Cryptographic equivocation is strictly among participants.
+function isEquivocated(inviteId: string, members: string[]): boolean {
+  const confirms = eventsForInvite(dkgConfirmEvents(), inviteId)
+    .filter(e => members.includes(e.pubkey))
+  if (confirms.length < 2) { return false }
+  const transcripts = new Set(confirms.map(e => getTagValue("transcript", e.tags)))
+  const quora = new Set(confirms.map(e => quorumOf(e)))
+  return transcripts.size > 1 || quora.size > 1
+}
+
+// ── Coordinator ────────────────────────────────────────────────────────────────
+// One createEffect that re-runs on every repository / progress change and advances
+// each session to its next reachable step. Every send is guarded by a persisted
+// progress flag (the cross-tick / cross-reload guard) PLUS a synchronous in-flight
+// guard (below). This is a fixpoint loop: flag flips retrigger derivation until no
+// further action is possible.
+//
+// Why the in-flight set is required: a step's progress flag can only be set AFTER
+// the async work that produces its payload (encryptPoly / decryptPoly / saveQuorum).
+// Between the first `await` and `patchProgress`, the effect can re-run (another
+// repository change) and re-enter the same step with the flag still unset — running
+// it twice concurrently. For Round 1 that means sampling TWO different polynomials and
+// broadcasting conflicting commitments (self-equivocation → everyone aborts); for
+// Round 2 a double per-recipient send; for finalize a double saveQuorum/confirm. The
+// in-flight set is checked-and-added SYNCHRONOUSLY at the top of each async step
+// (before any await) and removed in finally, so only one pass per (session, step) runs
+// at a time. The persisted flag still prevents re-runs across ticks and reloads.
+const inFlight = new Set<string>()
+
+export function startDkg(): void {
+  createEffect(() => {
+    for (const s of dkgSessions()) {
+      void advanceDkg(s) // fire-and-forget; each step is guarded
+    }
+  })
+}
+
+function ownIndexOf(s: DkgSession): number | undefined {
+  return (s as DkgSession & { ownIndex?: number }).ownIndex
+}
+
+async function advanceDkg(s: DkgSession): Promise<void> {
+  const id = s.inviteId
+  const p = getProgress(id)
+  if (p.aborted || p.declined) { return }
+
+  const ownIndex = ownIndexOf(s)
+  if (ownIndex === undefined) { return }
+
+  const mine = me()
+  const indexed = assignIndices(s.members)
+  const others = indexed.filter(m => m.pubkey !== mine)
+  const t = s.threshold
+
+  // Abort short-circuit: conflicting confirmations → mark aborted, do nothing more.
+  if (isEquivocated(id, s.members)) {
+    if (!p.aborted) {
+      patchProgress(id, { aborted: true })
+      toast.error("DKG aborted: conflicting confirmations from a participant")
+    }
+    return
+  }
+
+  try {
+    // ── STEP A — creator auto-joins (runs Round 1). ──
+    // Non-creators run Round 1 only via the explicit acceptDkg user action, because
+    // participation in Round 1 signals acceptance (PROTOCOL.md). The creator already
+    // consented by creating the invite, so the coordinator joins them automatically.
+    const inv = inviteEvents().find(e => e.id === id)
+    if (inv?.pubkey === mine && !p.sentRound1) {
+      await runRound1(s, ownIndex, others)
+      return
+    }
+    if (!p.sentRound1) { return } // a non-creator member waiting for acceptDkg
+
+    // ── STEP C — send Round 2 once ALL Round 1 received and verified. ──
+    if (!p.sentRound2) {
+      if (!round1Complete(s, mine, others)) { return }
+      for (const m of others) {
+        const r1 = s.round1[m.pubkey]
+        // Wrong polynomial degree → their commitments can't finalize → abort.
+        if (r1.commitments.length !== t) {
+          patchProgress(id, { aborted: true })
+          toast.error(`Invalid round-1 (wrong threshold) from ${m.pubkey.slice(0, 8)}`)
+          return
+        }
+        if (!verifyRound1(id, m.pubkey, r1.commitments, r1.proof)) {
+          patchProgress(id, { aborted: true })
+          toast.error(`Invalid round-1 proof from ${m.pubkey.slice(0, 8)}`)
+          return
+        }
+      }
+      // Claim the step synchronously (before any await) so a re-entrant pass that still
+      // sees sentRound2 === false cannot also send Round 2.
+      const key = `${id}:round2`
+      if (inFlight.has(key)) { return }
+      inFlight.add(key)
+      try {
+        const poly = await decryptPoly(p.encryptedPoly!)
+        // Persist the guard BEFORE the sends so the next tick (and a reload) skips this step.
+        patchProgress(id, { sentRound2: true })
+        await Promise.all(others.map(async m => {
+          // Per-recipient: each member gets a DIFFERENT share fᵢ(m.index). We use
+          // deliverTo directly (NOT sendProtocolEvent) so we do NOT store our outgoing
+          // 7052 locally — that would pollute round2, which must hold only peers' shares.
+          const rumor = dkgRound2(mine, id, poly, m.index)
+          await loadMessagingRelayList(m.pubkey).catch(() => {})
+          await deliverTo(m.pubkey, rumor).catch(e => console.error("dkg round-2 deliver failed", m.pubkey, e))
+        }))
+      } finally {
+        inFlight.delete(key)
+      }
+      return
+    }
+
+    // ── STEP D — finalize + confirm once ALL Round-2 shares received. ──
+    if (!p.sentConfirm) {
+      if (!others.every(m => s.round2[m.index] !== undefined)) { return }
+
+      // allCommitments: participant index → that member's verified Feldman commitments.
+      const allCommitments: Record<number, Hex[]> = {}
+      for (const m of indexed) {
+        const c = s.round1[m.pubkey]?.commitments
+        if (!c) { return } // race: a Round-1 went missing; wait for it
+        allCommitments[m.index] = c
+      }
+
+      // Claim the step synchronously so a re-entrant pass (flag still unset across the
+      // decrypt/save awaits) cannot double-finalize and double-confirm. A throw from
+      // dkgFinalize still propagates to the outer catch (sets aborted); finally only
+      // releases the in-flight latch.
+      const key = `${id}:finalize`
+      if (inFlight.has(key)) { return }
+      inFlight.add(key)
+      try {
+        const poly = await decryptPoly(p.encryptedPoly!)
+        // Own self-share fᵢ(ownIndex): the protocol sums sᵢⱼ over ALL i including i=j,
+        // and we never send ourselves a 7052. Reuse dkgRound2 at our own index so the
+        // self-share is computed identically to peers' (no separate evalPoly export).
+        const ownShare = shareOf(dkgRound2(mine, id, poly, ownIndex) as unknown as TrustedEvent)!
+        const shares: Record<number, Hex> = { ...s.round2, [ownIndex]: ownShare }
+
+        // dkgFinalize verifies every share against the commitments and may throw → abort.
+        const { state, transcript } = dkgFinalize(id, ownIndex, indexed, allCommitments, shares)
+
+        // Persist the shard BEFORE confirming: a crash between confirm and save must not
+        // leave peers thinking we're done while we've lost our shard.
+        await saveQuorum(state)
+        patchProgress(id, {
+          finalized: true,
+          sentConfirm: true,
+          myTranscript: transcript,
+          myQuorumPubkey: state.quorumPubkey,
+        })
+        const confirm = dkgConfirm(mine, id, state.quorumPubkey, transcript)
+        await sendProtocolEvent(confirm, others.map(m => m.pubkey))
+      } finally {
+        inFlight.delete(key)
+      }
+      return
+    }
+
+    // ── STEP E — completion is a view-only transition; nothing to send. ──
+  } catch (err) {
+    // No signer (logged out mid-session) is transient: encrypt/decrypt and delivery
+    // throw, but the state is fine — retry when the signer returns; do NOT abort.
+    if (!signer.get()) { return }
+    console.error("dkg advance failed", id, err)
+    toast.error(err instanceof Error ? err.message : "DKG step failed")
+    patchProgress(id, { aborted: true })
+  }
+}
+
+// Round 1 is complete once every member (peers + me) has a verified-or-pending entry.
+function round1Complete(s: DkgSession, mine: string, others: QuorumMember[]): boolean {
+  return Boolean(s.round1[mine]) && others.every(m => Boolean(s.round1[m.pubkey]))
+}
+
+// Shared by acceptDkg (non-creators) and the coordinator's creator auto-join (Step A).
+// CRITICAL idempotency: Round 1 samples a fresh polynomial and Feldman commitments. If
+// this ran twice concurrently (e.g. a coordinator re-entry during the encryptPoly await,
+// or a double-clicked acceptDkg) we would broadcast TWO different commitment sets and
+// persist a polynomial matching only one of them — self-equivocation that aborts the DKG
+// for every member. The synchronous in-flight latch below admits exactly one run per
+// session; the persisted sentRound1 flag blocks subsequent ticks and reloads. A caller
+// that loses the latch race must NOT proceed, so we surface that via the return value.
+async function runRound1(s: DkgSession, ownIndex: number, others: QuorumMember[]): Promise<void> {
+  const id = s.inviteId
+  // Re-check the persisted flag synchronously (acceptDkg checked it earlier, but an await
+  // may have elapsed since) and claim the latch before sampling anything.
+  if (getProgress(id).sentRound1) { return }
+  const key = `${id}:round1`
+  if (inFlight.has(key)) { return }
+  inFlight.add(key)
+  try {
+    const mine = me()
+    const { rumor, state } = dkgRound1(mine, id, s.threshold)
+    // Persist the polynomial NIP-44-self-encrypted; NEVER plaintext. It must survive
+    // reload so Round 2 / finalize can decrypt it after a refresh.
+    const encryptedPoly = await encryptPoly(state.polynomial)
+    // Persist the guard BEFORE broadcasting so the next tick / a reload skips this step.
+    patchProgress(id, { ownIndex, encryptedPoly, sentRound1: true })
+    await sendProtocolEvent(rumor, others.map(m => m.pubkey)) // broadcast 7051, stores local copy
+  } finally {
+    inFlight.delete(key)
+  }
+}
+
+// ── User actions ───────────────────────────────────────────────────────────────
+
+/**
+ * Create a quorum: build and deliver the kind 7050 invite. (Moved here from
+ * src/quorum.ts.) Optimistic — the invite is stored locally so the quorum appears
+ * immediately; delivery success/failure is surfaced via setDelivery and never blocks
+ * creation. The creator's Round 1 is driven by the coordinator (Step A) afterward.
+ *
+ * All protocol events are gift-wrapped to recipients, so the invite is delivered via
+ * sendProtocolEvent (which stores a local copy AND wraps to each member's inbox) —
+ * unlike the old plain publish, which never reached members.
+ *
+ * Returns the invite id (the quorum's identifier until DKG completes).
+ */
+export async function createQuorum(opts: {
+  members: string[]
+  threshold: number
+  message?: string
+}): Promise<string> {
+  const pk = pubkey.get()
+  if (!pk) { throw new Error("You must be logged in to create a quorum") }
+
+  // The creator is always a member of their own quorum.
+  const members = Array.from(new Set([pk, ...opts.members]))
+  const invite = createInvite(pk, members, opts.threshold, opts.message ?? "")
+  const inviteId = invite.id
+
+  // Show it (and select it) right away, before the network round-trip.
+  setDelivery(inviteId, "sending")
+  openQuorum(inviteId)
+
+  try {
+    await sendProtocolEvent(invite, members.filter(m => m !== pk))
+    setDelivery(inviteId, "saved")
+  } catch (err) {
+    console.error("createQuorum delivery failed", inviteId, err)
+    setDelivery(inviteId, "failed")
+  }
+
+  return inviteId
+}
+
+/**
+ * Accept a DKG invite: run Round 1 (sampling the polynomial, persisting it encrypted,
+ * broadcasting commitments). Participation in Round 1 IS the acceptance signal. The
+ * coordinator drives Round 2 / finalize / confirm from here.
+ *
+ * An optional message is held in progress and posted to the quorum chat after
+ * finalization (the quorum pubkey does not exist yet during DKG).
+ */
+export async function acceptDkg(inviteId: string, message?: string): Promise<void> {
+  const mine = me()
+  if (!mine) {
+    toast.error("You must be logged in to accept")
+    return
+  }
+
+  const session = dkgSessions().find(s => s.inviteId === inviteId)
+  if (!session) {
+    toast.error("Invite not found")
+    return
+  }
+  const ownIndex = ownIndexOf(session)
+  if (ownIndex === undefined) {
+    toast.error("You are not a member of this quorum")
+    return
+  }
+
+  const p = getProgress(inviteId)
+
+  // Post the optional accept message to the quorum chat immediately. Chat is plain NIP-17
+  // and works before the quorum's key exists — the member set is known from the invite —
+  // so there is no need to hold the message until finalization.
+  if (message) {
+    void sendChatMessage(inviteId, session.members, message).catch(e =>
+      console.error("post accept message failed", inviteId, e))
+  }
+
+  if (p.sentRound1) { return } // already accepted
+
+  // Rejoining after a local decline is allowed before others act on it.
+  if (p.declined) { patchProgress(inviteId, { declined: false }) }
+
+  const indexed = assignIndices(session.members)
+  const others = indexed.filter(m => m.pubkey !== mine)
+
+  try {
+    await runRound1(session, ownIndex, others)
+  } catch (err) {
+    if (!signer.get()) {
+      toast.error("Cannot accept while logged out")
+      return
+    }
+    console.error("acceptDkg failed", inviteId, err)
+    toast.error(err instanceof Error ? err.message : "Failed to accept invite")
+  }
+}
+
+/**
+ * Decline a DKG invite: send a kind 7061 to the initiator only (the quorum pubkey
+ * does not exist for a creation invite, so no quorum tag). A decline is informational
+ * — it stops US from participating and signals the initiator to restart; it does not
+ * abort the session for other members.
+ */
+export async function declineDkg(inviteId: string, reason?: string): Promise<void> {
+  const mine = me()
+  if (!mine) {
+    toast.error("You must be logged in to decline")
+    return
+  }
+
+  const p = getProgress(inviteId)
+  if (p.declined) { return }
+
+  patchProgress(inviteId, { declined: true })
+
+  // No quorumPubkey arg — the key does not exist for a creation invite.
+  const decline = createDecline(mine, inviteId, undefined, reason ?? "")
+  const inv = inviteEvents().find(e => e.id === inviteId)
+  const initiator = inv?.pubkey
+
+  try {
+    // Stores a local copy (so declines[me] derives) and delivers to the initiator.
+    await sendProtocolEvent(decline, initiator && initiator !== mine ? [initiator] : [])
+  } catch (err) {
+    if (!signer.get()) { return }
+    console.error("declineDkg delivery failed", inviteId, err)
+  }
+}
diff --git a/src/engine/events.ts b/src/engine/events.ts
new file mode 100644
index 0000000..46f2ce8
--- /dev/null
+++ b/src/engine/events.ts
@@ -0,0 +1,102 @@
+import { createSignal } from "solid-js"
+import { deriveEvents } from "@welshman/store"
+import { repository } from "@welshman/app"
+import { getTagValue, getTagValues } from "@welshman/util"
+import type { TrustedEvent } from "@welshman/util"
+import type { Hex } from "../protocol"
+
+// ── Per-kind repository-derived signals ───────────────────────────────────────
+// One subscription per protocol kind, alive for the app lifetime — the same
+// pattern src/store.ts uses. Each returns a Solid accessor of the current set of
+// events of that kind in the repository (inbound rumors + our own local copies).
+
+function kindSignal(kind: number): () => TrustedEvent[] {
+  const [get, set] = createSignal<TrustedEvent[]>([])
+  deriveEvents({ repository, filters: [{ kinds: [kind] }] }).subscribe(set)
+  return get
+}
+
+export const inviteEvents = kindSignal(7050)
+export const dkgRound1Events = kindSignal(7051)
+export const dkgRound2Events = kindSignal(7052)
+export const dkgConfirmEvents = kindSignal(7053)
+export const reshareProposalEvents = kindSignal(7054)
+export const reshareRound1Events = kindSignal(7055)
+export const reshareRound2Events = kindSignal(7056)
+export const reshareConfirmEvents = kindSignal(7057)
+export const signRequestEvents = kindSignal(7058)
+export const signNonceEvents = kindSignal(7059)
+export const signShareEvents = kindSignal(7060)
+export const declineEvents = kindSignal(7061)
+
+// ── Tag parsers ───────────────────────────────────────────────────────────────
+// The session id is the initiating event's inner id, referenced via ["e", id].
+
+export const sessionId = (e: TrustedEvent): string | undefined => getTagValue("e", e.tags)
+
+export const quorumOf = (e: TrustedEvent): Hex | undefined => getTagValue("quorum", e.tags)
+
+export const commitsOf = (e: TrustedEvent): Hex[] => getTagValues("commit", e.tags)
+
+export function proofOf(e: TrustedEvent): { R: Hex; s: Hex } | undefined {
+  const tag = e.tags.find(t => t[0] === "proof")
+  if (!tag || tag[1] === undefined || tag[2] === undefined) { return undefined }
+  return { R: tag[1], s: tag[2] }
+}
+
+export const shareOf = (e: TrustedEvent): Hex | undefined => getTagValue("share", e.tags)
+
+export const membersOf = (e: TrustedEvent): Hex[] => getTagValues("member", e.tags)
+
+export const thresholdOf = (e: TrustedEvent): number => Number(getTagValue("threshold", e.tags) ?? "1")
+
+export const contributorsOf = (e: TrustedEvent): Hex[] => getTagValues("contributor", e.tags)
+
+/** Parse ["dkg_commit", pk, ...commits] tags into pubkey → ordered commitments. */
+export function dkgCommitsOf(e: TrustedEvent): Record<Hex, Hex[]> {
+  const out: Record<Hex, Hex[]> = {}
+  for (const tag of e.tags) {
+    if (tag[0] !== "dkg_commit" || tag[1] === undefined) { continue }
+    out[tag[1]] = tag.slice(2)
+  }
+  return out
+}
+
+export function noncesOf(e: TrustedEvent): { D: Hex; E: Hex } | undefined {
+  const D = getTagValue("D", e.tags)
+  const E = getTagValue("E", e.tags)
+  if (D === undefined || E === undefined) { return undefined }
+  return { D, E }
+}
+
+export const zOf = (e: TrustedEvent): Hex | undefined => getTagValue("z", e.tags)
+
+export const signerIndicesOf = (e: TrustedEvent): number[] => getTagValues("signer", e.tags).map(Number)
+
+export const reasonOf = (e: TrustedEvent): string => e.content
+
+// ── Grouping helpers ──────────────────────────────────────────────────────────
+
+/** Group events by their session id (the ["e"] value); events without one are dropped. */
+export function groupBySession(events: TrustedEvent[]): Map<string, TrustedEvent[]> {
+  const out = new Map<string, TrustedEvent[]>()
+  for (const e of events) {
+    const id = sessionId(e)
+    if (!id) { continue }
+    const list = out.get(id)
+    if (list) { list.push(e) } else { out.set(id, [e]) }
+  }
+  return out
+}
+
+/** Dedupe events to the newest per author (ties broken by id for determinism). */
+export function latestByAuthor(events: TrustedEvent[]): Map<string, TrustedEvent> {
+  const out = new Map<string, TrustedEvent>()
+  for (const e of events) {
+    const prev = out.get(e.pubkey)
+    if (!prev || e.created_at > prev.created_at || (e.created_at === prev.created_at && e.id > prev.id)) {
+      out.set(e.pubkey, e)
+    }
+  }
+  return out
+}
diff --git a/src/engine/index.ts b/src/engine/index.ts
new file mode 100644
index 0000000..0ed8f88
--- /dev/null
+++ b/src/engine/index.ts
@@ -0,0 +1,19 @@
+import { startDkg } from "./dkg"
+import { startResharing } from "./resharing"
+import { startSigning } from "./signing"
+
+// ── Engine entry point ─────────────────────────────────────────────────────────
+// Starts all three reactive ceremony coordinators. Called once from boot.ts after
+// the repository is hydrating and gift-wrap unwrapping is enabled. Each coordinator
+// is idempotent and processes already-hydrated events on its first run, so ordering
+// relative to hydration does not matter.
+
+let started = false
+
+export function startEngine(): void {
+  if (started) { return }
+  started = true
+  startDkg()
+  startResharing()
+  startSigning()
+}
diff --git a/src/engine/notifications.ts b/src/engine/notifications.ts
new file mode 100644
index 0000000..8896925
--- /dev/null
+++ b/src/engine/notifications.ts
@@ -0,0 +1,116 @@
+import { createSignal } from "solid-js"
+import { synced, localStorageProvider, deriveEvents } from "@welshman/store"
+import { now } from "@welshman/lib"
+import { pubkey, repository } from "@welshman/app"
+import { getTagValue } from "@welshman/util"
+import type { TrustedEvent } from "@welshman/util"
+import { PROTOCOL_KINDS } from "../protocol"
+import type { DisplayedQuorum } from "../models"
+
+// ── Notification checkpoints ────────────────────────────────────────────────────
+// A "checkpoint" is the timestamp up to which a quorum's tab has been read. A tab has
+// new activity if it holds any event (from someone other than us) newer than its
+// checkpoint. Checkpoints fall back to a per-session `baseline`, which login sets to
+// 7 days ago so older history isn't flagged as new.
+
+export type QuorumTab = "log" | "members" | "chat"
+
+const WEEK = 7 * 24 * 60 * 60
+const CHAT_KIND = 14
+// Kinds that establish or change a quorum's member set (DKG complete, rotation complete).
+const MEMBERSHIP_KINDS = [7053, 7057]
+
+type NotificationState = { baseline: number; lastChecked: Record<string, number> }
+
+const notifications = synced<NotificationState>({
+  key: "nq:notifications",
+  storage: localStorageProvider,
+  defaultValue: { baseline: 0, lastChecked: {} },
+})
+
+// `synced` is a plain svelte writable (no `.get()`); read the latest synchronously for
+// writes, and mirror it into a Solid signal so badge derivations recompute reactively.
+function read(): NotificationState {
+  let value!: NotificationState
+  notifications.subscribe(v => { value = v })()
+  return value
+}
+
+const [state, setState] = createSignal<NotificationState>(read())
+notifications.subscribe(setState)
+
+const [me, setMe] = createSignal("")
+pubkey.subscribe(pk => {
+  setMe(pk ?? "")
+  // First session ever (e.g. a restored login predating this feature): seed the baseline
+  // so existing history isn't all flagged as new. Explicit logins reset it via onLogin().
+  if (pk && read().baseline === 0) {
+    notifications.set({ ...read(), baseline: now() - WEEK })
+  }
+})
+
+// Account-scoped so two local accounts in the same quorum don't share read state.
+const checkpointKey = (pk: string, quorumId: string, tab: QuorumTab) => `${pk}:${quorumId}:${tab}`
+
+/** Reset every checkpoint to 7 days ago. Call on login. */
+export function onLogin(): void {
+  notifications.set({ baseline: now() - WEEK, lastChecked: {} })
+}
+
+/** Mark a quorum's tab read up to now. Called continuously while the tab is on screen. */
+export function markTabViewed(quorumId: string, tab: QuorumTab): void {
+  const pk = me()
+  if (!pk) { return }
+  const s = read()
+  notifications.set({ ...s, lastChecked: { ...s.lastChecked, [checkpointKey(pk, quorumId, tab)]: now() } })
+}
+
+function checkpoint(quorumId: string, tab: QuorumTab): number {
+  const s = state()
+  return s.lastChecked[checkpointKey(me(), quorumId, tab)] ?? s.baseline
+}
+
+// ── Reactive event streams ──────────────────────────────────────────────────────
+const [allProtocol, setAllProtocol] = createSignal<TrustedEvent[]>([])
+deriveEvents({ repository, filters: [{ kinds: PROTOCOL_KINDS }] }).subscribe(setAllProtocol)
+
+const [allChat, setAllChat] = createSignal<TrustedEvent[]>([])
+deriveEvents({ repository, filters: [{ kinds: [CHAT_KIND] }] }).subscribe(setAllChat)
+
+// A quorum's protocol events: the invite, anything that "e"-tags it (DKG rounds/declines),
+// and once established anything carrying its quorum tag (confirmations, resharing, signing).
+function protocolEventsFor(q: DisplayedQuorum): TrustedEvent[] {
+  const inviteId = q.inviteId
+  const quorumPubkey = q.quorumPubkey
+  return allProtocol().filter(e =>
+    e.id === inviteId ||
+    getTagValue("e", e.tags) === inviteId ||
+    (quorumPubkey !== undefined && getTagValue("quorum", e.tags) === quorumPubkey))
+}
+
+function chatEventsFor(q: DisplayedQuorum): TrustedEvent[] {
+  const ids = new Set([q.inviteId, q.quorumPubkey].filter((x): x is string => Boolean(x)))
+  return allChat().filter(e => {
+    const t = getTagValue("quorum", e.tags)
+    return t !== undefined && ids.has(t)
+  })
+}
+
+function tabEvents(q: DisplayedQuorum, tab: QuorumTab): TrustedEvent[] {
+  if (tab === "chat") { return chatEventsFor(q) }
+  const proto = protocolEventsFor(q)
+  if (tab === "members") { return proto.filter(e => MEMBERSHIP_KINDS.includes(e.kind)) }
+  return proto // log: full protocol history
+}
+
+/** Whether a quorum's tab has activity (from others) newer than its read checkpoint. */
+export function tabHasActivity(q: DisplayedQuorum, tab: QuorumTab): boolean {
+  const cp = checkpoint(q.inviteId, tab)
+  const mine = me()
+  return tabEvents(q, tab).some(e => e.created_at > cp && e.pubkey !== mine)
+}
+
+/** Whether a quorum has any new activity across its tabs (drives the nav badge). */
+export function quorumHasActivity(q: DisplayedQuorum): boolean {
+  return tabHasActivity(q, "log") || tabHasActivity(q, "members") || tabHasActivity(q, "chat")
+}
diff --git a/src/engine/resharing.ts b/src/engine/resharing.ts
new file mode 100644
index 0000000..d83dd72
--- /dev/null
+++ b/src/engine/resharing.ts
@@ -0,0 +1,642 @@
+import { createSignal, createEffect } from "solid-js"
+import { toast } from "solid-toast"
+import { pubkey, signer, repository, loadMessagingRelayList } from "@welshman/app"
+import { getTagValue } from "@welshman/util"
+import type { TrustedEvent } from "@welshman/util"
+import {
+  createResharingProposal,
+  resharingRound1,
+  verifyResharingRound1,
+  resharingRound2,
+  resharingFinalize,
+  createDecline,
+  assignIndices,
+} from "../protocol"
+import type { Hex } from "../protocol"
+import type { ResharingSession, Round1Data, ResharingPhase, QuorumRecord } from "../models"
+import { encryptPoly, decryptPoly } from "../models"
+import {
+  reshareProposalEvents,
+  reshareRound1Events,
+  reshareRound2Events,
+  reshareConfirmEvents,
+  declineEvents,
+  sessionId,
+  quorumOf,
+  commitsOf,
+  proofOf,
+  shareOf,
+  membersOf,
+  thresholdOf,
+  contributorsOf,
+  dkgCommitsOf,
+  reasonOf,
+  groupBySession,
+  latestByAuthor,
+} from "./events"
+import {
+  getProgress,
+  patchProgress,
+  getQuorumRecord,
+  loadShard,
+  saveQuorum,
+  sessionProgress,
+  quora,
+  shardRecords,
+} from "./secrets"
+import { sendProtocolEvent, deliverTo } from "./delivery"
+import { sendChatMessage } from "./chat"
+
+// ── Local helpers ─────────────────────────────────────────────────────────────
+
+const transcriptOf = (e: TrustedEvent): string | undefined => getTagValue("transcript", e.tags)
+
+const unique = <T,>(xs: T[]): T[] => Array.from(new Set(xs))
+
+/**
+ * A resharing session as derived from the repository, extended with runtime flags
+ * the coordinator and UI need. It is a structural superset of `ResharingSession`, so
+ * existing UI typings (ResharingInviteResponse etc.) keep compiling.
+ */
+export type ResharingSessionView = ResharingSession & {
+  /** The initiator (kind 7054 author) */
+  initiator: Hex
+  iAmContributor: boolean
+  iAmNewMember: boolean
+  iAmInitiator: boolean
+  aborted: boolean
+  declined: boolean
+  /** pubkey → ordered Feldman commitments for every CURRENT member (from the proposal) */
+  dkgCommitsByPk: Record<Hex, Hex[]>
+  /** All kind 7057 confirmations (not deduped) for equivocation detection */
+  confirms: { pubkey: Hex; quorum?: Hex; transcript?: string }[]
+  round1Count: number
+  confirmCount: number
+  expectedConfirms: number
+  declinedCount: number
+}
+
+// ── Reactive bridges from the persisted (svelte) stores ────────────────────────
+// The synced stores are not Solid signals; bridge each via a module-scope signal fed
+// by `.subscribe`, the same way src/store.ts bridges welshman stores. Reading these in
+// the derivation effect makes it recompute when persisted progress / quora / shards change.
+
+const [progressMirror, setProgressMirror] = createSignal<Record<string, ReturnType<typeof getProgress>>>({})
+const [quoraMirror, setQuoraMirror] = createSignal<unknown>(undefined)
+const [shardsMirror, setShardsMirror] = createSignal<unknown>(undefined)
+
+sessionProgress.subscribe(v => setProgressMirror(v))
+quora.subscribe(v => setQuoraMirror(v))
+shardRecords.subscribe(v => setShardsMirror(v))
+
+// ── Derived session list ───────────────────────────────────────────────────────
+
+const [sessions, setSessions] = createSignal<ResharingSessionView[]>([])
+
+createEffect(() => {
+  const me = pubkey.get()
+  // Touch the store mirrors so this recomputes on persisted-state changes.
+  progressMirror()
+  quoraMirror()
+  shardsMirror()
+
+  if (!me) {
+    setSessions([])
+    return
+  }
+
+  const proposals = reshareProposalEvents()
+  const round1BySession = groupBySession(reshareRound1Events())
+  const round2BySession = groupBySession(reshareRound2Events())
+  const confirmBySession = groupBySession(reshareConfirmEvents())
+  const declineBySession = groupBySession(declineEvents())
+
+  const views: ResharingSessionView[] = []
+
+  for (const p of proposals) {
+    const proposalId = p.id
+    const quorumPubkey = quorumOf(p) ?? ""
+    const contributors = contributorsOf(p)
+    const newMembers = membersOf(p)
+    const newThreshold = thresholdOf(p)
+    const dkgCommitsByPk = dkgCommitsOf(p)
+    const initiator = p.pubkey
+
+    const iAmContributor = contributors.includes(me)
+    const iAmNewMember = newMembers.includes(me)
+    const iAmInitiator = initiator === me
+
+    // Only surface sessions the user participates in.
+    if (!iAmContributor && !iAmNewMember && !iAmInitiator) { continue }
+
+    // Round 1 (7055): newest per author, keyed by contributor pubkey. Ignore non-contributors.
+    const round1: Record<Hex, Round1Data> = {}
+    for (const [author, e] of latestByAuthor(round1BySession.get(proposalId) ?? [])) {
+      if (!contributors.includes(author)) { continue }
+      const proof = proofOf(e)
+      if (!proof) { continue }
+      round1[author] = { commitments: commitsOf(e), proof }
+    }
+
+    // Round 2 (7056): per-recipient shares addressed to us; newest per sender. Re-key by the
+    // sender's ORIGINAL contributor index (derived from the proposal's current member set).
+    const currentMembers = assignIndices(Object.keys(dkgCommitsByPk))
+    const indexByPubkey = new Map(currentMembers.map(m => [m.pubkey, m.index]))
+    const round2: Record<number, Hex> = {}
+    for (const [author, e] of latestByAuthor(round2BySession.get(proposalId) ?? [])) {
+      if (!contributors.includes(author)) { continue }
+      const idx = indexByPubkey.get(author)
+      const share = shareOf(e)
+      if (idx === undefined || share === undefined) { continue }
+      round2[idx] = share
+    }
+
+    // Confirmations (7057): only new members legitimately finalize and confirm, so ignore
+    // any 7057 from a non-new-member — otherwise an outsider could inject a divergent
+    // transcript/quorum and force a false abort, or inflate the confirmation count. Keep ALL
+    // (deduped only on the count) confirmations from new members for equivocation detection.
+    const newMemberSet = new Set(newMembers)
+    const confirmEvents = (confirmBySession.get(proposalId) ?? []).filter(e => newMemberSet.has(e.pubkey))
+    const confirms = confirmEvents.map(e => ({
+      pubkey: e.pubkey,
+      quorum: quorumOf(e),
+      transcript: transcriptOf(e),
+    }))
+    const confirmCount = latestByAuthor(confirmEvents).size
+
+    // Declines (7061): newest per author, pubkey → reason. Only an actual participant
+    // (contributor or prospective new member) can meaningfully decline; ignore outsiders so
+    // the declined count is not inflated by unrelated pubkeys.
+    const declines: Record<Hex, string> = {}
+    for (const [author, e] of latestByAuthor(declineBySession.get(proposalId) ?? [])) {
+      if (!contributors.includes(author) && !newMembers.includes(author)) { continue }
+      declines[author] = reasonOf(e)
+    }
+
+    const progress = getProgress(proposalId)
+    const aborted = progress.aborted === true
+    const declined = progress.declined === true
+
+    const phase = computePhase(proposalId, quorumPubkey, progress, contributors, round1, confirmCount)
+
+    views.push({
+      proposalId,
+      quorumPubkey,
+      contributors,
+      newMembers,
+      newThreshold,
+      phase,
+      myCommitments: undefined,
+      myEncryptedPoly: progress.encryptedPoly,
+      round1,
+      round2,
+      declines,
+      initiator,
+      iAmContributor,
+      iAmNewMember,
+      iAmInitiator,
+      aborted,
+      declined,
+      dkgCommitsByPk,
+      confirms,
+      round1Count: Object.keys(round1).length,
+      confirmCount,
+      expectedConfirms: newMembers.length,
+      declinedCount: Object.keys(declines).length,
+    })
+  }
+
+  setSessions(views)
+})
+
+function computePhase(
+  proposalId: string,
+  quorumPubkey: string,
+  progress: ReturnType<typeof getProgress>,
+  contributors: Hex[],
+  round1: Record<Hex, Round1Data>,
+  confirmCount: number,
+): ResharingPhase {
+  const rec = getQuorumRecord(quorumPubkey)
+  if ((rec && rec.rotationRecords.includes(proposalId)) || progress.finalized) {
+    return "complete"
+  }
+  if (progress.sentRound2 || confirmCount >= 1) {
+    return "confirming"
+  }
+  const allRound1 = contributors.length > 0 && contributors.every(c => round1[c])
+  if (progress.sentRound1 || allRound1) {
+    return "round2"
+  }
+  return "round1"
+}
+
+/** Reactive accessor for the resharing session list (UI + coordinator). */
+export function resharingSessions(): ResharingSessionView[] {
+  return sessions()
+}
+
+function findSession(proposalId: string): ResharingSessionView | undefined {
+  return sessions().find(s => s.proposalId === proposalId)
+}
+
+// ── Initiate (kind 7054) ───────────────────────────────────────────────────────
+
+export async function proposeResharing(opts: {
+  quorumPubkey: string
+  newMembers: string[]
+  newThreshold: number
+  contributors: string[]
+  message?: string
+}): Promise<string> {
+  const me = pubkey.get()
+  if (!me) { throw new Error("You must be logged in to propose a rotation") }
+
+  const rec = getQuorumRecord(opts.quorumPubkey)
+  if (!rec) { throw new Error("Unknown quorum") }
+
+  const currentPubkeys = rec.members.map(m => m.pubkey)
+  if (!opts.contributors.every(c => currentPubkeys.includes(c))) {
+    throw new Error("All contributors must be current members")
+  }
+  if (opts.contributors.length < rec.threshold) {
+    throw new Error(`At least ${rec.threshold} contributors are required`)
+  }
+  if (opts.newMembers.length === 0) {
+    throw new Error("Select at least one new member")
+  }
+  if (opts.newThreshold < 1 || opts.newThreshold > opts.newMembers.length) {
+    throw new Error("Threshold must be between 1 and the number of new members")
+  }
+
+  // members = the CURRENT members (with original indices); commitments keyed by original index.
+  // createResharingProposal serialises one ["dkg_commit", pk, ...commitments[index]] per member.
+  const rumor = createResharingProposal(
+    me,
+    opts.quorumPubkey,
+    rec.members,
+    opts.contributors,
+    opts.newMembers,
+    opts.newThreshold,
+    rec.commitments,
+    opts.message ?? "",
+  )
+  const proposalId = rumor.id
+
+  // Recipients = (current ∪ new) \ {me}. Contributors run round 1; new members verify+finalize.
+  const recipients = unique([...currentPubkeys, ...opts.newMembers]).filter(pk => pk !== me)
+
+  // Best-effort: warm messaging relay lists so delivery can resolve inbox relays.
+  await Promise.all(recipients.map(pk => loadMessagingRelayList(pk).catch(() => {})))
+
+  // Optimistic local store + best-effort gift-wrapped delivery. Creation must not fail
+  // just because delivery did — the proposal's presence in the repository is its own guard.
+  try {
+    await sendProtocolEvent(rumor, recipients)
+  } catch (e) {
+    console.error("propose resharing delivery failed", e)
+    toast.error("Rotation proposed, but delivery to some members failed")
+  }
+
+  return proposalId
+}
+
+// ── Accept / decline ────────────────────────────────────────────────────────────
+
+export async function acceptResharing(proposalId: string, message?: string): Promise<void> {
+  const s = findSession(proposalId)
+  if (!s) { throw new Error("Unknown resharing proposal") }
+
+  const me = pubkey.get()
+  if (!me) { throw new Error("Not logged in") }
+
+  if (getProgress(proposalId).declined) { throw new Error("Already declined") }
+
+  // Mark intent; the coordinator (createEffect) observes this consent and advances the
+  // session idempotently. We never run crypto here, so accept can't race the coordinator.
+  acceptedSessions.add(proposalId)
+
+  if (message && s.quorumPubkey) {
+    // Reach everyone involved in the rotation (old contributors + new members).
+    const members = Array.from(new Set([...s.contributors, ...s.newMembers]))
+    await sendChatMessage(s.quorumPubkey, members, message).catch(e => console.error("chat failed", e))
+  }
+}
+
+export async function declineResharing(proposalId: string, reason?: string): Promise<void> {
+  const s = findSession(proposalId)
+  if (!s) { throw new Error("Unknown resharing proposal") }
+
+  const me = pubkey.get()
+  if (!me) { throw new Error("Not logged in") }
+
+  if (getProgress(proposalId).declined) { return }
+  patchProgress(proposalId, { declined: true })
+
+  const proposal = reshareProposalEvents().find(e => e.id === proposalId)
+  const initiator = proposal?.pubkey
+
+  // For resharing the quorum key is already known, so it is included in the decline.
+  const rumor = createDecline(me, proposalId, s.quorumPubkey || undefined, reason ?? "")
+  const recipients = initiator && initiator !== me ? [initiator] : []
+  await sendProtocolEvent(rumor, recipients).catch(e => console.error("decline send failed", e))
+}
+
+// ── Reactive coordinator ─────────────────────────────────────────────────────────
+
+// Within-tick guard so the effect never launches the same async step twice before its
+// persisted flag lands. The persisted flag is the durable guard; this is the immediate one.
+const inFlight = new Set<string>()
+
+// User consent, populated by acceptResharing. The shared SessionProgress type has no
+// `accepted` flag (it is DKG/signing-owned in secrets.ts), so resharing tracks consent in
+// memory here, mirroring the sibling DKG engine which treats `sentRound1` as the accept
+// signal. A contributor who already broadcast round 1 (`sentRound1`) is implicitly accepted,
+// so a reload mid-rotation resumes round 2/finalize without re-accepting; a new-only member
+// who reloads before finalize simply re-accepts from the inbox. The coordinator never
+// reshares a shard or saves a new shard / confirms without consent.
+const acceptedSessions = new Set<string>()
+
+function isAccepted(s: ResharingSessionView, progress: ReturnType<typeof getProgress>): boolean {
+  return acceptedSessions.has(s.proposalId) || progress.sentRound1 === true
+}
+
+let started = false
+
+export function startResharing(): void {
+  if (started) { return }
+  started = true
+
+  createEffect(() => {
+    const me = pubkey.get()
+    if (!me) { return }
+    for (const s of resharingSessions()) {
+      if (s.aborted || s.declined) { continue }
+      void advance(s, me)
+    }
+  })
+}
+
+async function advance(s: ResharingSessionView, me: Hex): Promise<void> {
+  const progress = getProgress(s.proposalId)
+  if (progress.declined || progress.aborted) { return }
+
+  // 5.0 — Equivocation / abort check (run FIRST, every tick).
+  if (detectEquivocation(s)) {
+    patchProgress(s.proposalId, { aborted: true })
+    toast.error("Rotation aborted: conflicting confirmations")
+    return
+  }
+
+  // Gate every action on explicit user consent — round-1 broadcast IS the on-wire accept
+  // signal, and a new-only member must consent before joining the rotated quorum.
+  if (!isAccepted(s, progress)) { return }
+
+  // ── Derive index sets (always from the proposal's current member set, so contributors
+  //    and new-only members agree). dkgCommitsByPk keys ARE the current member pubkeys.
+  const currentMembers = assignIndices(Object.keys(s.dkgCommitsByPk))
+  const currentIndexByPubkey = new Map(currentMembers.map(m => [m.pubkey, m.index]))
+
+  // originalCommitments: Record<originalIndex, Hex[]> — used to verify each contributor's shard.
+  const originalCommitments: Record<number, Hex[]> = {}
+  for (const m of currentMembers) {
+    originalCommitments[m.index] = s.dkgCommitsByPk[m.pubkey]
+  }
+
+  // contributorSet: original DKG indices of S, sorted (passed to lagrangeCoeff in protocol.ts).
+  const contributorSet = s.contributors
+    .map(pk => currentIndexByPubkey.get(pk))
+    .filter((i): i is number => i !== undefined)
+    .sort((a, b) => a - b)
+
+  const newMemberMembers = assignIndices(s.newMembers)
+  const myNewIndex = newMemberMembers.find(m => m.pubkey === me)?.index
+  const myOriginalIndex = currentIndexByPubkey.get(me)
+
+  // ── STEP A — Contributor Round 1 (kind 7055) ──────────────────────────────────
+  if (s.iAmContributor && !progress.sentRound1) {
+    const key = `${s.proposalId}:round1`
+    if (!inFlight.has(key)) {
+      inFlight.add(key)
+      try {
+        if (myOriginalIndex === undefined) {
+          throw new Error("Missing original index for contributor")
+        }
+        const shard = await loadShard(s.quorumPubkey)
+        if (shard === undefined) {
+          // Recoverable: the user may re-import their shard. Do not abort.
+          toast.error("Cannot reshare: your shard for this quorum is missing")
+          return
+        }
+        const { rumor, polynomial } = resharingRound1(
+          me,
+          s.proposalId,
+          s.quorumPubkey,
+          contributorSet,
+          myOriginalIndex,
+          shard,
+          s.newThreshold,
+        )
+
+        // Persist the polynomial + mark sentRound1 BEFORE network IO so a re-entrant tick skips,
+        // and a reload resumes round 2 with the SAME polynomial (re-sampling would break peers'
+        // verifyShare against the already-broadcast commitments).
+        patchProgress(s.proposalId, {
+          sentRound1: true,
+          encryptedPoly: await encryptPoly(polynomial),
+          ownIndex: myOriginalIndex,
+        })
+
+        const recipients = s.newMembers.filter(pk => pk !== me)
+        await sendProtocolEvent(rumor, recipients)
+      } catch (e) {
+        console.error("resharing round 1 failed", e)
+      } finally {
+        inFlight.delete(key)
+      }
+    }
+    return
+  }
+
+  // ── STEP B — Verify peers' Round 1 (precondition for round 2 / finalize) ──────
+  // Require every contributor's verified round 1 before proceeding.
+  const allContributorsPresent = s.contributors.every(c => s.round1[c])
+  for (const c of s.contributors) {
+    const data = s.round1[c]
+    if (!data) { continue }
+    const ci = currentIndexByPubkey.get(c)
+    if (ci === undefined) { continue }
+    const ok = verifyResharingRound1(
+      s.proposalId,
+      c,
+      ci,
+      contributorSet,
+      data.commitments,
+      data.proof,
+      originalCommitments,
+    )
+    if (!ok) {
+      patchProgress(s.proposalId, { aborted: true })
+      toast.error(`Rotation aborted: invalid commitment from ${c.slice(0, 8)}…`)
+      return
+    }
+  }
+  if (!allContributorsPresent) { return } // wait for more round-1 events
+
+  // ── STEP C — Contributor Round 2 (kind 7056, per recipient) ───────────────────
+  if (s.iAmContributor && progress.sentRound1 && !progress.sentRound2) {
+    const key = `${s.proposalId}:round2`
+    if (!inFlight.has(key)) {
+      inFlight.add(key)
+      try {
+        if (!progress.encryptedPoly) {
+          // Corruption: round 1 sent but polynomial lost — cannot reproduce shares.
+          patchProgress(s.proposalId, { aborted: true })
+          toast.error("Rotation aborted: lost resharing polynomial")
+          return
+        }
+        const poly = await decryptPoly(progress.encryptedPoly)
+
+        // Mark sentRound2 before dispatching so a re-entrant tick skips.
+        patchProgress(s.proposalId, { sentRound2: true })
+
+        for (const m of newMemberMembers) {
+          const rumor = resharingRound2(me, s.proposalId, s.quorumPubkey, poly, m.index)
+          if (m.pubkey === me) {
+            // Store our own self-share locally so finalize sees a complete shares map.
+            repository.publish(rumor)
+          } else {
+            await deliverTo(m.pubkey, rumor).catch(e => console.error("round 2 deliver failed", m.pubkey, e))
+          }
+        }
+      } catch (e) {
+        console.error("resharing round 2 failed", e)
+      } finally {
+        inFlight.delete(key)
+      }
+    }
+    // fall through: a retained member may finalize once shares arrive
+  }
+
+  // ── STEP D — New-member Finalize (kind 7057) ──────────────────────────────────
+  if (s.iAmNewMember && !progress.finalized && !progress.sentConfirm) {
+    // Need a share from EVERY contributor (including our own self-share if retained).
+    const haveAllShares =
+      s.contributors.length > 0 &&
+      s.contributors.every(c => {
+        const ci = currentIndexByPubkey.get(c)
+        return ci !== undefined && s.round2[ci] !== undefined
+      })
+
+    if (myNewIndex !== undefined && haveAllShares) {
+      const key = `${s.proposalId}:finalize`
+      if (!inFlight.has(key)) {
+        inFlight.add(key)
+        try {
+          // contributorCommitments (the Dᵢ from 7055), keyed by original contributor index.
+          const contributorCommitments: Record<number, Hex[]> = {}
+          for (const c of s.contributors) {
+            const ci = currentIndexByPubkey.get(c)
+            const data = s.round1[c]
+            if (ci === undefined || !data) { continue }
+            contributorCommitments[ci] = data.commitments
+          }
+
+          let result
+          try {
+            result = resharingFinalize(
+              me,
+              s.proposalId,
+              s.quorumPubkey,
+              myNewIndex,
+              s.newMembers,
+              s.newThreshold,
+              contributorCommitments,
+              s.round2,
+            )
+          } catch (e) {
+            patchProgress(s.proposalId, { aborted: true })
+            toast.error("Rotation aborted: finalization failed")
+            console.error("resharing finalize failed", e)
+            return
+          }
+
+          // Persist the new quorum state, then append this rotation to the record.
+          await saveQuorum(result.state)
+          appendRotationRecord(s.quorumPubkey, s.proposalId)
+
+          // Mark finalized + sentConfirm BEFORE network IO.
+          patchProgress(s.proposalId, {
+            finalized: true,
+            sentConfirm: true,
+            ownIndex: myNewIndex,
+          })
+
+          const recipients = s.newMembers.filter(pk => pk !== me)
+          await sendProtocolEvent(result.rumor, recipients)
+        } catch (e) {
+          console.error("resharing finalize/confirm failed", e)
+        } finally {
+          inFlight.delete(key)
+        }
+      }
+    }
+    return
+  }
+
+  // ── STEP E — Completion detection (contributor-only, read-only latch) ─────────
+  // A contributor who is NOT a new member holds no new shard; latch `finalized` purely
+  // for UI/idempotency once a full MATCHING confirmation set exists, so the session view
+  // shows complete and stops re-evaluating. Never call saveQuorum for them.
+  if (s.iAmContributor && !s.iAmNewMember && !progress.finalized) {
+    if (hasCompleteConfirmation(s)) {
+      patchProgress(s.proposalId, { finalized: true })
+    }
+  }
+}
+
+// ── Coordinator helpers ──────────────────────────────────────────────────────────
+
+/** True iff two kind 7057 confirmations diverge on (transcript, quorum) — abort trigger. */
+function detectEquivocation(s: ResharingSessionView): boolean {
+  const pairs = new Set<string>()
+  for (const c of s.confirms) {
+    if (c.transcript === undefined && c.quorum === undefined) { continue }
+    pairs.add(`${c.transcript ?? ""}|${c.quorum ?? ""}`)
+  }
+  return pairs.size > 1
+}
+
+/** True once all n' new members have confirmed with a single matching (transcript, quorum). */
+function hasCompleteConfirmation(s: ResharingSessionView): boolean {
+  const latest = new Map<Hex, { quorum?: Hex; transcript?: string }>()
+  for (const c of s.confirms) {
+    latest.set(c.pubkey, { quorum: c.quorum, transcript: c.transcript })
+  }
+  const newMemberSet = new Set(s.newMembers)
+  const relevant = [...latest.entries()].filter(([pk]) => newMemberSet.has(pk))
+  if (relevant.length < s.newMembers.length) { return false }
+  const pairs = new Set(relevant.map(([, v]) => `${v.transcript ?? ""}|${v.quorum ?? ""}`))
+  return pairs.size === 1
+}
+
+/**
+ * Append a completed rotation's proposal id to the quorum record (deduped). saveQuorum
+ * upserts the record but preserves the EXISTING rotationRecords; this appends the new
+ * rotation id afterwards so rotation history accrues. Idempotent: a repeat finalize won't
+ * append twice.
+ */
+function appendRotationRecord(quorumPubkey: string, proposalId: string): void {
+  const rec = getQuorumRecord(quorumPubkey)
+  if (!rec) { return }
+  if (rec.rotationRecords.includes(proposalId)) { return }
+  const updated: QuorumRecord = { ...rec, rotationRecords: [...rec.rotationRecords, proposalId] }
+  const all = readQuora()
+  quora.set([...all.filter(q => q.quorumPubkey !== quorumPubkey), updated])
+}
+
+function readQuora(): QuorumRecord[] {
+  let value: QuorumRecord[] = []
+  quora.subscribe(v => { value = v })()
+  return value
+}
diff --git a/src/engine/secrets.ts b/src/engine/secrets.ts
new file mode 100644
index 0000000..230d4b3
--- /dev/null
+++ b/src/engine/secrets.ts
@@ -0,0 +1,132 @@
+import type { Readable } from "svelte/store"
+import { synced, localStorageProvider } from "@welshman/store"
+import { pubkey } from "@welshman/app"
+import { encryptShard, decryptShard } from "../models"
+import type { QuorumRecord, ShardRecord } from "../models"
+import type { QuorumState, SigningNonces } from "../protocol"
+
+// ── Synchronous reads ─────────────────────────────────────────────────────────
+// `synced()` returns a plain svelte writable: it has `.set`/`.subscribe`/`.ready`
+// but no `.get()`. Read the current value synchronously the same way the rest of
+// the app does (svelte's subscribe-fires-immediately contract), then unsubscribe.
+function read<T>(store: Readable<T>): T {
+  let value!: T
+  store.subscribe(v => { value = v })()
+  return value
+}
+
+// ── Per-session progress + encrypted polynomial ───────────────────────────────
+// Keyed by session id (inviteId / proposalId). Progress flags make every coordinator
+// send idempotent: a flag is set the moment a send is (optimistically) initiated, so
+// re-running the coordinator on the next repository change never repeats it.
+export type SessionProgress = {
+  encryptedPoly?: string
+  ownIndex?: number
+  sentRound1?: boolean
+  sentRound2?: boolean
+  sentConfirm?: boolean
+  finalized?: boolean
+  declined?: boolean
+  aborted?: boolean
+  // Our own finalized transcript / quorum pubkey, for local-vs-peer equivocation detection.
+  myTranscript?: string
+  myQuorumPubkey?: string
+}
+
+export const sessionProgress = synced<Record<string, SessionProgress>>({
+  key: "nq:session-progress",
+  storage: localStorageProvider,
+  defaultValue: {},
+})
+
+export function getProgress(id: string): SessionProgress {
+  return read(sessionProgress)[id] ?? {}
+}
+
+export function patchProgress(id: string, patch: Partial<SessionProgress>): void {
+  const all = read(sessionProgress)
+  sessionProgress.set({ ...all, [id]: { ...all[id], ...patch } })
+}
+
+// ── Completed quora (public) + this member's encrypted shard records ───────────
+export const quora = synced<QuorumRecord[]>({
+  key: "nq:quora",
+  storage: localStorageProvider,
+  defaultValue: [],
+})
+
+export const shardRecords = synced<Record<string, ShardRecord>>({
+  key: "nq:shards",
+  storage: localStorageProvider,
+  defaultValue: {},
+})
+
+/**
+ * Persist a finalized quorum: split a QuorumState into a public QuorumRecord (no secret
+ * material) and an encrypted ShardRecord (our shard, NIP-44 self-encrypted at rest).
+ * Our participant index is recovered from `state.members` by our own pubkey; the shard
+ * record is keyed by quorum pubkey, so an existing record (e.g. from a prior rotation) is
+ * replaced. Rotation history on the public record is preserved across re-saves.
+ */
+export async function saveQuorum(state: QuorumState): Promise<void> {
+  const me = pubkey.get()
+  const ownIndex = state.members.find(m => m.pubkey === me)?.index ?? state.members[0]?.index ?? 1
+
+  const record: QuorumRecord = {
+    quorumPubkey: state.quorumPubkey,
+    members: state.members,
+    threshold: state.threshold,
+    commitments: state.commitments,
+    rotationRecords: getQuorumRecord(state.quorumPubkey)?.rotationRecords ?? [],
+  }
+
+  const existing = read(quora)
+  quora.set([...existing.filter(q => q.quorumPubkey !== state.quorumPubkey), record])
+
+  const shard: ShardRecord = {
+    quorumPubkey: state.quorumPubkey,
+    index: ownIndex,
+    verificationShare: state.verificationShare,
+    encryptedShard: await encryptShard(state.shard),
+  }
+
+  const records = read(shardRecords)
+  shardRecords.set({ ...records, [state.quorumPubkey]: shard })
+}
+
+export function getQuorumRecord(quorumPubkey: string): QuorumRecord | undefined {
+  return read(quora).find(q => q.quorumPubkey === quorumPubkey)
+}
+
+/** Decrypt and return this member's shard for a quorum (or undefined). */
+export async function loadShard(quorumPubkey: string): Promise<bigint | undefined> {
+  const record = read(shardRecords)[quorumPubkey]
+  if (!record) { return undefined }
+  try {
+    return await decryptShard(record.encryptedShard)
+  } catch (e) {
+    console.error("Failed to decrypt shard", quorumPubkey, e)
+    return undefined
+  }
+}
+
+export function getShardRecord(quorumPubkey: string): ShardRecord | undefined {
+  return read(shardRecords)[quorumPubkey]
+}
+
+// ── Signing nonces — IN MEMORY ONLY, NEVER persisted ──────────────────────────
+// Reusing (d,e) across sessions leaks the shard (PROTOCOL.md Security Notes), so these
+// live only in this Map and are dropped when the session ends or the page reloads.
+const nonces = new Map<string, SigningNonces>()
+
+export function setNonces(requestId: string, n: SigningNonces): void {
+  nonces.set(requestId, n)
+}
+
+export function getNonces(requestId: string): SigningNonces | undefined {
+  return nonces.get(requestId)
+}
+
+export function clearNonces(requestId: string): void {
+  nonces.delete(requestId)
+}
diff --git a/src/engine/signing.ts b/src/engine/signing.ts
new file mode 100644
index 0000000..f04cded
--- /dev/null
+++ b/src/engine/signing.ts
@@ -0,0 +1,603 @@
+import { createEffect, createSignal } from "solid-js"
+import { toast } from "solid-toast"
+import { hexToBytes } from "@noble/curves-v2/utils.js"
+import { pubkey, repository, publishThunk, getPubkeyRelays, loadRelayList } from "@welshman/app"
+import { RelayMode } from "@welshman/util"
+import type { OwnedEvent, TrustedEvent } from "@welshman/util"
+import {
+  createSignRequest,
+  signingRound1,
+  signingRound2,
+  aggregateSignature,
+  createDecline,
+  getHash,
+  assignIndices,
+} from "../protocol"
+import type { Hex } from "../protocol"
+import type { SigningSession } from "../models"
+import { sendProtocolEvent } from "./delivery"
+import {
+  getProgress,
+  patchProgress,
+  getQuorumRecord,
+  loadShard,
+  setNonces,
+  getNonces,
+  clearNonces,
+  sessionProgress,
+} from "./secrets"
+import {
+  signRequestEvents,
+  signNonceEvents,
+  signShareEvents,
+  declineEvents,
+  quorumOf,
+  noncesOf,
+  zOf,
+  signerIndicesOf,
+  reasonOf,
+  groupBySession,
+  latestByAuthor,
+} from "./events"
+
+// Active pubkey bridged to a Solid signal so the coordinator and session views re-run
+// reactively when the session is restored on login (pubkey.get() alone is not reactive,
+// which left the coordinator never advancing a request created before login hydrated).
+const [me, setMe] = createSignal("")
+pubkey.subscribe(pk => setMe(pk ?? ""))
+
+// Progress lives in localStorage (a svelte store), not a Solid signal, so a flag change
+// (e.g. `finalized` set by aggregation) must explicitly retrigger derivation. Bumping this
+// tick on every progress write makes signingSessions() recompute — without it the badge
+// stays on "round 2" after the signature is finalized instead of showing "Signed".
+const [progressTick, setProgressTick] = createSignal(0)
+sessionProgress.subscribe(() => setProgressTick(n => n + 1))
+
+// ─── Deterministic signing-set rule S ──────────────────────────────────────────
+//
+// PROTOCOL.md Round 2 has a privileged "coordinator" construct S and distribute
+// the finalized nonce list. We avoid a privileged party by deriving S purely from
+// the kind-7059 nonce events every signer already holds, so all signers compute the
+// IDENTICAL S without any extra distribution round:
+//
+//   S = the ascending-sorted member indices of the FIRST `threshold` members
+//       (ordered by member index, i.e. by sorted pubkey) who have broadcast a
+//       kind-7059 nonce for this requestId.
+//
+// Concretely: take the dedup'd (newest-per-author) 7059 set, map each author to its
+// member index via assignIndices(quorum.members), sort the indices ascending, and
+// take the first `threshold` of them. Because every signer sees the same nonce events
+// in the same index order, they all derive the same S the instant >= threshold nonces
+// exist. Once chosen, S is frozen: surplus/late nonces never change it (we already
+// took the first t by index). allNonces for round-2/aggregation is built ONLY from the
+// members in S. No separate nonce-list distribution event is needed — S and the nonce
+// list are both deterministic from the 7059 events, satisfying PROTOCOL.md implicitly.
+function computeSigningSet(
+  nonceByAuthor: Map<string, TrustedEvent>,
+  members: { pubkey: Hex; index: number }[],
+  threshold: number,
+): number[] {
+  const indexByPubkey = new Map(members.map(m => [m.pubkey, m.index]))
+  const indices: number[] = []
+  for (const pk of nonceByAuthor.keys()) {
+    const i = indexByPubkey.get(pk)
+    if (i !== undefined) { indices.push(i) }
+  }
+  indices.sort((a, b) => a - b)
+  return indices.slice(0, threshold)
+}
+
+// ─── Session-view derivation ────────────────────────────────────────────────────
+//
+// Pure function of the repository signals + persisted progress. A session is built
+// only for sign requests whose quorum we are a member of (we hold its QuorumRecord).
+function deriveSigningSessions(
+  mine: Hex,
+  requests: TrustedEvent[],
+  nonces: TrustedEvent[],
+  shares: TrustedEvent[],
+  declines: TrustedEvent[],
+): SigningSession[] {
+  const noncesBySession = groupBySession(nonces)
+  const sharesBySession = groupBySession(shares)
+  const declinesBySession = groupBySession(declines)
+
+  const sessions: SigningSession[] = []
+
+  for (const req of requests) {
+    const requestId = req.id
+    const quorumPubkey = quorumOf(req)
+    if (!quorumPubkey) { continue }
+
+    const quorum = getQuorumRecord(quorumPubkey)
+    if (!quorum) { continue }
+    // Only participate in quora we belong to.
+    if (!quorum.members.some(m => m.pubkey === mine)) { continue }
+
+    const p = getProgress(requestId)
+
+    // Parse the unsigned event from the request content; skip malformed requests.
+    let msgHex: Hex
+    try {
+      msgHex = getHash(JSON.parse(req.content) as OwnedEvent)
+    } catch {
+      continue
+    }
+
+    // Round-1 nonces (dedup newest-per-author), keyed by sender pubkey.
+    const nonceByAuthor = latestByAuthor(noncesBySession.get(requestId) ?? [])
+    const round1: Record<Hex, { D: Hex; E: Hex }> = {}
+    for (const [pk, e] of nonceByAuthor) {
+      const n = noncesOf(e)
+      if (n) { round1[pk] = n }
+    }
+
+    const signingSet = computeSigningSet(nonceByAuthor, quorum.members, quorum.threshold)
+
+    // Round-2 signature shares (dedup newest-per-author), keyed by participant index.
+    // Only keep shares whose advertised signer-set matches the canonical S (mismatched
+    // sets are rejected — they belong to an incompatible attempt and would corrupt
+    // aggregation).
+    const canonical = JSON.stringify([...signingSet].sort((a, b) => a - b))
+    const shareByAuthor = latestByAuthor(sharesBySession.get(requestId) ?? [])
+    const indexByPubkey = new Map(quorum.members.map(m => [m.pubkey, m.index]))
+    const sharesByIndex: Record<number, Hex> = {}
+    for (const [pk, e] of shareByAuthor) {
+      const idx = indexByPubkey.get(pk)
+      const z = zOf(e)
+      if (idx === undefined || z === undefined) { continue }
+      if (signingSet.length === quorum.threshold) {
+        const advertised = JSON.stringify([...signerIndicesOf(e)].sort((a, b) => a - b))
+        if (advertised !== canonical) { continue }
+      }
+      sharesByIndex[idx] = z
+    }
+
+    const declineMap: Record<Hex, string> = {}
+    for (const e of declinesBySession.get(requestId) ?? []) {
+      declineMap[e.pubkey] = reasonOf(e)
+    }
+
+    // Phase precedence: complete -> round2 -> round1. SigningPhase has no terminal
+    // "aborted" member, so an aborted session reads as the most advanced phase it
+    // reached (the abort state itself is carried in persisted progress, surfaced via
+    // isSigningAborted()).
+    const myNonce = getNonces(requestId)
+    let phase: SigningSession["phase"]
+    if (p.finalized) {
+      phase = "complete"
+    } else if (p.sentRound1 && round1Count(round1) >= quorum.threshold) {
+      phase = "round2"
+    } else {
+      phase = "round1"
+    }
+
+    sessions.push({
+      requestId,
+      quorumPubkey,
+      msgHex,
+      phase,
+      signingSet,
+      myNonces: myNonce ? { D: myNonce.D, E: myNonce.E } : undefined,
+      round1,
+      shares: sharesByIndex,
+      declines: declineMap,
+    })
+  }
+
+  return sessions
+}
+
+function round1Count(round1: Record<Hex, unknown>): number {
+  return Object.keys(round1).length
+}
+
+/** Reactive signing-session list for the UI. */
+export function signingSessions(): SigningSession[] {
+  progressTick() // re-derive when a progress flag (e.g. finalized) flips
+  const mine = me()
+  if (!mine) { return [] }
+  return deriveSigningSessions(
+    mine,
+    signRequestEvents(),
+    signNonceEvents(),
+    signShareEvents(),
+    declineEvents(),
+  )
+}
+
+// ─── User actions ───────────────────────────────────────────────────────────────
+
+/**
+ * Initiate a signing session. Normalizes the unsigned event so its NIP-01 id (== msg)
+ * is fixed and identical for every signer, broadcasts a kind-7058 request, and lets the
+ * coordinator drive the initiator's own nonce. Optimistic: never hard-fails on
+ * undeliverability. Returns the request id (the signing session identifier).
+ */
+export async function requestSignature(quorumPubkey: string, unsignedEvent: object): Promise<string> {
+  const me = pubkey.get()
+  if (!me) { throw new Error("You must be logged in to request a signature") }
+
+  const quorum = getQuorumRecord(quorumPubkey)
+  if (!quorum) { throw new Error("Unknown quorum") }
+
+  const tpl = unsignedEvent as { kind?: number; tags?: string[][]; content?: string }
+  // Fix pubkey/created_at/kind/tags/content so the NIP-01 id is stable across signers.
+  const evt = {
+    pubkey: quorumPubkey,
+    created_at: Math.floor(Date.now() / 1000),
+    kind: tpl.kind ?? 1,
+    tags: tpl.tags ?? [],
+    content: tpl.content ?? "",
+  }
+
+  const req = createSignRequest(me, quorumPubkey, evt)
+  const others = quorum.members.map(m => m.pubkey).filter(pk => pk !== me)
+
+  try {
+    await sendProtocolEvent(req, others)
+  } catch (e) {
+    repository.publish(req)
+    toast.error(e instanceof Error ? e.message : "Failed to send sign request")
+  }
+
+  // The requester implicitly consents, so complete round 1 right away: issue our nonce so
+  // the session counts the initiator toward the threshold without a separate accept step.
+  // (The coordinator's ST0 is a fallback; this makes it deterministic and immediate.)
+  if (!getProgress(req.id).sentRound1) {
+    const { rumor, nonces } = signingRound1(me, req.id, quorumPubkey)
+    setNonces(req.id, nonces)
+    patchProgress(req.id, { sentRound1: true })
+    try {
+      await sendProtocolEvent(rumor, others)
+    } catch (e) {
+      toast.error(e instanceof Error ? e.message : "Failed to send nonce")
+    }
+  }
+
+  return req.id
+}
+
+/**
+ * Consent to sign: issue OUR round-1 nonce (kind 7059). Nonces are IN MEMORY ONLY
+ * (setNonces) and never persisted — reusing them across sessions leaks the shard.
+ * The coordinator advances us to round 2 once S is finalizable.
+ */
+export async function acceptSign(requestId: string): Promise<void> {
+  const me = pubkey.get()
+  if (!me) { throw new Error("You must be logged in to sign") }
+
+  const p = getProgress(requestId)
+  if (p.sentRound1 || p.declined || p.aborted) { return }
+
+  const req = signRequestEvents().find(e => e.id === requestId)
+  if (!req) { return }
+  const quorumPubkey = quorumOf(req)
+  if (!quorumPubkey) { return }
+  const quorum = getQuorumRecord(quorumPubkey)
+  if (!quorum) { return }
+
+  const { rumor, nonces } = signingRound1(me, requestId, quorumPubkey)
+  setNonces(requestId, nonces)
+  patchProgress(requestId, { sentRound1: true })
+
+  const others = quorum.members.map(m => m.pubkey).filter(pk => pk !== me)
+  try {
+    await sendProtocolEvent(rumor, others)
+  } catch (e) {
+    toast.error(e instanceof Error ? e.message : "Failed to send nonce")
+  }
+}
+
+/** Decline a sign request — informational, sent only to the initiator. */
+export async function declineSign(requestId: string, reason?: string): Promise<void> {
+  const me = pubkey.get()
+  if (!me) { throw new Error("You must be logged in to decline") }
+
+  const p = getProgress(requestId)
+  if (p.sentRound1 || p.declined) { return }
+
+  const req = signRequestEvents().find(e => e.id === requestId)
+  if (!req) { return }
+  const quorumPubkey = quorumOf(req)
+
+  const rumor = createDecline(me, requestId, quorumPubkey, reason)
+  patchProgress(requestId, { declined: true })
+
+  try {
+    await sendProtocolEvent(rumor, [req.pubkey])
+  } catch (e) {
+    toast.error(e instanceof Error ? e.message : "Failed to send decline")
+  }
+}
+
+// ─── Coordinator ────────────────────────────────────────────────────────────────
+//
+// Tracks the signed nostr event id produced by aggregation, surfaced via
+// publishedSignature(). Kept in-module (the SigningSession model has no field for it)
+// and best-effort only — the signed event is also published to the repository.
+const signedEventIds = new Map<string, string>()
+
+/** The published signed-event id for a completed signing session, if any. */
+export function publishedSignature(requestId: string): string | undefined {
+  return signedEventIds.get(requestId)
+}
+
+/** Whether a signing session has aborted (equivocating signer-sets or a crypto failure). */
+export function isSigningAborted(requestId: string): boolean {
+  return getProgress(requestId).aborted === true
+}
+
+// Per-session snapshot the coordinator advances. Captured synchronously inside the
+// reactive effect; async send closures read only from this (never reactive signals).
+type Snapshot = {
+  requestId: string
+  quorumPubkey: Hex
+  initiatorPubkey: Hex
+  msgHex: Hex
+  unsignedEvent: OwnedEvent
+  threshold: number
+  members: { pubkey: Hex; index: number }[]
+  signingSet: number[]
+  // index -> {D,E} for every member that broadcast a nonce (used to build allNonces for S)
+  noncesByIndex: Record<number, { D: Hex; E: Hex }>
+  // index -> z for every share whose signer-set matches canonical S
+  sharesByIndex: Record<number, Hex>
+  // every 7060 for the session, for the signer-set agreement check
+  shareEvents: TrustedEvent[]
+}
+
+function buildSnapshot(
+  mine: Hex,
+  req: TrustedEvent,
+  noncesBySession: Map<string, TrustedEvent[]>,
+  sharesBySession: Map<string, TrustedEvent[]>,
+): Snapshot | undefined {
+  const requestId = req.id
+  const quorumPubkey = quorumOf(req)
+  if (!quorumPubkey) { return undefined }
+  const quorum = getQuorumRecord(quorumPubkey)
+  if (!quorum) { return undefined }
+  if (!quorum.members.some(m => m.pubkey === mine)) { return undefined }
+
+  let unsignedEvent: OwnedEvent
+  let msgHex: Hex
+  try {
+    unsignedEvent = JSON.parse(req.content) as OwnedEvent
+    msgHex = getHash(unsignedEvent)
+  } catch {
+    return undefined
+  }
+
+  const indexByPubkey = new Map(quorum.members.map(m => [m.pubkey, m.index]))
+
+  const nonceByAuthor = latestByAuthor(noncesBySession.get(requestId) ?? [])
+  const signingSet = computeSigningSet(nonceByAuthor, quorum.members, quorum.threshold)
+  const canonical = JSON.stringify([...signingSet].sort((a, b) => a - b))
+
+  const noncesByIndex: Record<number, { D: Hex; E: Hex }> = {}
+  for (const [pk, e] of nonceByAuthor) {
+    const idx = indexByPubkey.get(pk)
+    const n = noncesOf(e)
+    if (idx !== undefined && n) { noncesByIndex[idx] = n }
+  }
+
+  const shareEvents = [...latestByAuthor(sharesBySession.get(requestId) ?? []).values()]
+  const sharesByIndex: Record<number, Hex> = {}
+  for (const e of shareEvents) {
+    const idx = indexByPubkey.get(e.pubkey)
+    const z = zOf(e)
+    if (idx === undefined || z === undefined) { continue }
+    if (signingSet.length === quorum.threshold) {
+      const advertised = JSON.stringify([...signerIndicesOf(e)].sort((a, b) => a - b))
+      if (advertised !== canonical) { continue }
+    }
+    sharesByIndex[idx] = z
+  }
+
+  return {
+    requestId,
+    quorumPubkey,
+    initiatorPubkey: req.pubkey,
+    msgHex,
+    unsignedEvent,
+    threshold: quorum.threshold,
+    members: quorum.members,
+    signingSet,
+    noncesByIndex,
+    sharesByIndex,
+    shareEvents,
+  }
+}
+
+// Decide the next action for one session and (idempotently) push guarded async tasks.
+// Guard flags are set synchronously BEFORE the async send is queued, so the re-entrant
+// run triggered by our own repository.publish is a no-op.
+function advanceSigning(mine: Hex, s: Snapshot, tasks: Array<() => Promise<void>>): void {
+  const p = getProgress(s.requestId)
+  if (p.declined || p.aborted) { return }
+
+  const ownIndex = s.members.find(m => m.pubkey === mine)?.index
+  if (ownIndex === undefined) { return }
+
+  const ourNonceInRepo = s.noncesByIndex[ownIndex] !== undefined
+
+  // Reconcile a lost progress flag with reality: if our own 7059 is already in the
+  // repository (e.g. flag dropped on reload) record that we sent round 1, so the phase
+  // derivation is accurate. The in-memory nonce is gone after reload, so ST1 will then
+  // correctly stall rather than reuse — and never re-broadcast a duplicate nonce.
+  if (ourNonceInRepo && !p.sentRound1) {
+    patchProgress(s.requestId, { sentRound1: true })
+  }
+
+  // ST0 — initiator auto-issues its nonce (implicit consent by requesting). All other
+  // members issue a nonce only via explicit acceptSign.
+  if (mine === s.initiatorPubkey && !p.sentRound1 && !ourNonceInRepo) {
+    const quorumPubkey = s.quorumPubkey
+    const others = s.members.map(m => m.pubkey).filter(pk => pk !== mine)
+    patchProgress(s.requestId, { sentRound1: true })
+    tasks.push(async () => {
+      const { rumor, nonces } = signingRound1(mine, s.requestId, quorumPubkey)
+      setNonces(s.requestId, nonces)
+      await sendProtocolEvent(rumor, others)
+    })
+    return
+  }
+
+  // We have committed to round 1 if the flag is set OR our nonce is already in the repo
+  // (the reconcile above may have just set the flag, so don't trust the stale `p`).
+  const sentRound1 = p.sentRound1 || ourNonceInRepo
+
+  // ST1 — round 2: compute our signature share once S is finalizable and we are in S.
+  if (sentRound1 && !p.sentRound2) {
+    const ourShareInRepo = s.sharesByIndex[ownIndex] !== undefined
+    const sFinalizable = s.signingSet.length === s.threshold
+    const inS = s.signingSet.includes(ownIndex)
+    const myNonce = getNonces(s.requestId)
+
+    if (sFinalizable && inS && !ourShareInRepo) {
+      if (!myNonce) {
+        // Nonce lost (e.g. page reload mid-signing). We cannot reconstruct it (never
+        // persisted, H5) and must not issue a fresh one for a request we already
+        // broadcast a nonce for. Surface and skip — the initiator restarts.
+        return
+      }
+      const signingSet = [...s.signingSet]
+      const allNonces: Record<number, { D: Hex; E: Hex }> = {}
+      for (const i of signingSet) {
+        const n = s.noncesByIndex[i]
+        if (!n) { return } // missing a nonce for a member of S — wait
+        allNonces[i] = n
+      }
+      const quorumPubkey = s.quorumPubkey
+      const msg = hexToBytes(s.msgHex)
+      const others = s.members.map(m => m.pubkey).filter(pk => pk !== mine)
+
+      patchProgress(s.requestId, { sentRound2: true })
+      tasks.push(async () => {
+        const shard = await loadShard(quorumPubkey)
+        if (shard === undefined) {
+          toast.error("Missing shard — cannot sign")
+          return
+        }
+        const { rumor } = signingRound2(
+          mine, s.requestId, quorumPubkey, msg, signingSet, ownIndex, shard, myNonce, allNonces,
+        )
+        await sendProtocolEvent(rumor, others)
+      })
+      return
+    }
+  }
+
+  // ST2 — aggregate + publish. Any member runs this once all of S's shares are in; the
+  // result is deterministic, so cross-client duplicate publishes are harmless (same id).
+  if (!p.finalized && s.signingSet.length === s.threshold) {
+    // Signer-set agreement (PROTOCOL.md Round 2 / Aggregation): if ANY received 7060
+    // advertises a signer set other than the canonical S, abort the session. This must
+    // run BEFORE the haveAllShares gate: a conflicting signer-set share is filtered out
+    // of sharesByIndex, so haveAllShares would never become true and the session would
+    // silently stall forever instead of aborting as the protocol requires.
+    const canonical = JSON.stringify([...s.signingSet].sort((a, b) => a - b))
+    for (const e of s.shareEvents) {
+      const advertised = JSON.stringify([...signerIndicesOf(e)].sort((a, b) => a - b))
+      if (advertised !== canonical) {
+        patchProgress(s.requestId, { aborted: true })
+        return
+      }
+    }
+
+    const haveAllShares = s.signingSet.every(i => s.sharesByIndex[i] !== undefined)
+    if (!haveAllShares) { return }
+
+    const quorum = getQuorumRecord(s.quorumPubkey)
+    if (!quorum) { return }
+
+    const signingSet = [...s.signingSet]
+    const allNonces: Record<number, { D: Hex; E: Hex }> = {}
+    const shares: Record<number, bigint> = {}
+    for (const i of signingSet) {
+      const n = s.noncesByIndex[i]
+      const z = s.sharesByIndex[i]
+      if (!n || z === undefined) { return }
+      allNonces[i] = n
+      shares[i] = BigInt("0x" + z) // protocol.ts does not export fromHex
+    }
+
+    const quorumPubkey = s.quorumPubkey
+    const msg = hexToBytes(s.msgHex)
+    const commitments = quorum.commitments
+    const unsignedEvent = s.unsignedEvent
+
+    patchProgress(s.requestId, { finalized: true })
+    tasks.push(async () => {
+      let sigHex: string
+      try {
+        sigHex = aggregateSignature(quorumPubkey, msg, signingSet, allNonces, shares, commitments)
+      } catch (e) {
+        patchProgress(s.requestId, { aborted: true, finalized: false })
+        toast.error(e instanceof Error ? e.message : "Signature aggregation failed")
+        return
+      }
+
+      // Attach the aggregated BIP-340 signature to the unsigned event from the 7058
+      // content. The event's id == msg (the same canonical hash all signers used).
+      const signed: TrustedEvent = {
+        ...unsignedEvent,
+        pubkey: quorumPubkey,
+        id: getHash(unsignedEvent),
+        sig: sigHex,
+      }
+      signedEventIds.set(s.requestId, signed.id)
+      clearNonces(s.requestId)
+
+      repository.publish(signed)
+      try {
+        // Publish the quorum's freshly signed event to its outbox (kind-10002 write) relays.
+        // Every party that aggregates does this, so it lands even if some are offline. If the
+        // quorum has no relay list, this resolves to no relays (the request form warns about that).
+        await loadRelayList(quorumPubkey).catch(() => undefined)
+        publishThunk({ event: signed, relays: getPubkeyRelays(quorumPubkey, RelayMode.Write) })
+      } catch (e) {
+        toast.error(e instanceof Error ? e.message : "Failed to publish signed event")
+      }
+    })
+  }
+}
+
+/**
+ * Start the signing coordinator. Reactive over the repository signals; on every change
+ * it re-derives each session I participate in and advances it idempotently. Guard flags
+ * are set synchronously before async sends, and every transition is double-guarded by a
+ * repository-presence check, so a lost progress flag (e.g. on boot before hydration)
+ * never causes a duplicate send.
+ */
+export function startSigning(): void {
+  createEffect(() => {
+    progressTick() // re-advance when a progress flag flips, not only on new events
+    const mine = me()
+    if (!mine) { return }
+
+    // Read reactive signals synchronously so Solid tracks them.
+    const requests = signRequestEvents()
+    const nonces = signNonceEvents()
+    const shares = signShareEvents()
+
+    const noncesBySession = groupBySession(nonces)
+    const sharesBySession = groupBySession(shares)
+
+    const tasks: Array<() => Promise<void>> = []
+    for (const req of requests) {
+      const s = buildSnapshot(mine, req, noncesBySession, sharesBySession)
+      if (!s) { continue }
+      advanceSigning(mine, s, tasks)
+    }
+
+    if (tasks.length) {
+      queueMicrotask(() => {
+        for (const t of tasks) {
+          void t().catch(e => console.error("signing task failed", e))
+        }
+      })
+    }
+  })
+}
diff --git a/src/lib/media.ts b/src/lib/media.ts
new file mode 100644
index 0000000..8ab33dd
--- /dev/null
+++ b/src/lib/media.ts
@@ -0,0 +1,11 @@
+import { createSignal } from "solid-js"
+
+// Reactive match for Tailwind's `md` breakpoint (≥ 768px). The layout renders both the
+// desktop and mobile trees simultaneously (toggled with CSS), so components that behave
+// differently per breakpoint — e.g. only marking a tab read when actually on screen —
+// need this to tell which tree is visible. Module-level singleton, app-lifetime.
+const query = window.matchMedia("(min-width: 768px)")
+const [isDesktop, setIsDesktop] = createSignal(query.matches)
+query.addEventListener("change", e => setIsDesktop(e.matches))
+
+export { isDesktop }
diff --git a/src/models.ts b/src/models.ts
index e08e3d5..a3974ac 100644
--- a/src/models.ts
+++ b/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 ─────────────────────────────────────────────────────────
diff --git a/src/nostr.ts b/src/nostr.ts
index cade01d..23e4036 100644
--- a/src/nostr.ts
+++ b/src/nostr.ts
@@ -3,15 +3,21 @@ import { request } from "@welshman/net"
 type Subscription = { unsubscribe(): void }
 
 /**
- * Subscribe to the user's NIP-59 inbox (kind 1059 gift wraps tagged with the app topic).
+ * Subscribe to the user's NIP-59 inbox (kind 1059 gift wraps addressed to them).
  * With shouldUnwrap enabled in boot.ts, incoming wraps are auto-unwrapped and the inner
- * protocol rumor is stored in the repository — no manual unwrap/persist needed here.
+ * rumor is stored in the repository — no manual unwrap/persist needed here.
+ *
+ * We intentionally do NOT filter on the protocol's ["t","b7ed"] topic tag: protocol wraps
+ * carry it (for spec-compliant filtering by other implementations) but NIP-17 quorum chat
+ * (kind 14) wraps do not. Filtering by topic would silently drop all inbound chat. The
+ * standard NIP-17 inbox is unfiltered by topic; we follow that and let the engine/chat
+ * derivations select the rumor kinds they care about from the repository.
  */
 export function subscribeInbox(relays: string[], pubkey: string): Subscription {
   const ctrl = new AbortController()
   request({
     relays,
-    filters: [{ kinds: [1059], "#p": [pubkey], "#t": ["b7ed"] }],
+    filters: [{ kinds: [1059], "#p": [pubkey] }],
     signal: ctrl.signal,
   })
   return { unsubscribe: () => ctrl.abort() }
diff --git a/src/quorum.ts b/src/quorum.ts
deleted file mode 100644
index 7a40a57..0000000
--- a/src/quorum.ts
+++ /dev/null
@@ -1,61 +0,0 @@
-import {
-  pubkey,
-  publishThunk,
-  getCompleteThunkUrls,
-  getFailedThunkUrls,
-} from "@welshman/app"
-import { Router } from "@welshman/router"
-import { createInvite } from "./protocol"
-import { openQuorum, setDelivery } from "./store"
-
-/**
- * Create a quorum by publishing a kind 7050 DKG invite.
- *
- * This is optimistic: publishThunk writes the invite to the repository synchronously,
- * so the quorum shows up in the list immediately — whether or not any relay accepts it.
- * Delivery success/failure is reflected in the quorum's status, never blocks creation.
- *
- * Returns the invite id (the quorum's identifier until DKG completes).
- */
-export async function createQuorum(opts: {
-  members: string[]
-  threshold: number
-  message?: string
-}): Promise<string> {
-  const pk = pubkey.get()
-  if (!pk) { throw new Error("You must be logged in to create a quorum") }
-
-  // The creator is always a member of their own quorum.
-  const members = Array.from(new Set([pk, ...opts.members]))
-  const invite = createInvite(pk, members, opts.threshold, opts.message ?? "")
-  const inviteId = invite.id
-
-  // Show it (and select it) right away, before the network round-trip.
-  setDelivery(inviteId, "sending")
-  openQuorum(inviteId)
-
-  const relays = Router.get().FromUser().getUrls()
-  const thunk = publishThunk({ event: invite, relays })
-
-  // Resolve the delivery indicator without blocking the UI. The invite is already in
-  // the repository, so the quorum stays visible no matter how this settles.
-  let settled = false
-  const finish = (status: "saved" | "failed") => {
-    if (settled) { return }
-    settled = true
-    setDelivery(inviteId, status)
-  }
-
-  if (relays.length === 0) {
-    finish("saved") // stored locally; there are no relays to deliver to
-  } else {
-    // "saved" once any relay accepts it; "failed" only if every relay rejects it
-    // (which also covers a signing failure, where all relays are marked failed).
-    thunk.subscribe(t => {
-      if (getCompleteThunkUrls(t).length > 0) { finish("saved") }
-      else if (getFailedThunkUrls(t).length >= relays.length) { finish("failed") }
-    })
-  }
-
-  return inviteId
-}
diff --git a/src/store.ts b/src/store.ts
index 66ecd83..db7e8c5 100644
--- a/src/store.ts
+++ b/src/store.ts
@@ -15,6 +15,7 @@ import {
 } from "@welshman/app"
 import { subscribeInbox } from "./nostr"
 import { assignIndices } from "./protocol"
+import { quora as completedQuora } from "./engine/secrets"
 import type {
   QuorumRecord,
   DisplayedQuorum,
@@ -24,7 +25,7 @@ import type {
   SigningSession,
 } from "./models"
 
-export type View = "inbox" | "account" | { type: "quorum"; id: string; tab: "log" | "members" | "chat" }
+export type View = "home" | "account" | { type: "quorum"; id: string; tab: "log" | "members" | "chat" }
 
 export function logout(): void {
   // dropSession removes the session and its cached signer entirely; the sync()
@@ -34,7 +35,7 @@ export function logout(): void {
   if (pk) { dropSession(pk) }
 }
 
-export const [view, setView] = createSignal<View>("inbox")
+export const [view, setView] = createSignal<View>("home")
 
 export function openQuorum(id: string): void {
   setView({ type: "quorum", id, tab: "log" })
@@ -76,6 +77,12 @@ deriveEvents({ repository, filters: [{ kinds: [7051] }] }).subscribe(setRound1Ev
 deriveEvents({ repository, filters: [{ kinds: [7061] }] }).subscribe(setDeclineEvents)
 deriveEvents({ repository, filters: [{ kinds: [7053] }] }).subscribe(setCompleteEvents)
 
+// Finalized quora (carry our shard) persisted by the engine once a DKG or resharing
+// completes. Merged into displayedQuora below so a quorum keeps showing after its
+// invite events are pruned, and so quora we joined without holding the invite appear.
+const [finishedQuora, setFinishedQuora] = createSignal<QuorumRecord[]>([])
+completedQuora.subscribe(setFinishedQuora)
+
 function authorsByInviteId(events: TrustedEvent[]): Map<string, Set<string>> {
   const m = new Map<string, Set<string>>()
   for (const e of events) {
@@ -149,6 +156,29 @@ export const displayedQuora = createMemo<DisplayedQuorum[]>(() => {
       } satisfies DisplayedQuorum
     })
 
+  // Merge in finalized quora from the engine. A completed quorum already surfaced via
+  // its invite (which now has a 7053) is skipped here so it shows once, as complete and
+  // selectable by inviteId; records with no local invite (e.g. we joined elsewhere, or
+  // the invite was pruned) are appended as standalone complete entries.
+  const shownPubkeys = new Set(list.map(q => q.quorumPubkey).filter(Boolean))
+  for (const record of finishedQuora()) {
+    if (shownPubkeys.has(record.quorumPubkey)) { continue }
+    shownPubkeys.add(record.quorumPubkey)
+    list.push({
+      id: record.quorumPubkey,
+      quorumPubkey: record.quorumPubkey,
+      inviteId: record.quorumPubkey,
+      members: record.members,
+      threshold: record.threshold,
+      complete: true,
+      status: "complete",
+      statusLabel: "Complete",
+      joined: record.members.length,
+      declined: 0,
+      createdAt: 0,
+    } satisfies DisplayedQuorum)
+  }
+
   return list.sort((a, b) => b.createdAt - a.createdAt)
 })
 
@@ -160,6 +190,16 @@ export const activeQuorum = createMemo<DisplayedQuorum | undefined>(() => {
   return undefined
 })
 
+// Land on the first quorum instead of the empty home view — e.g. once quora hydrate on
+// load. Only fires while on "home", so it never overrides explicit navigation to a quorum
+// or the account page. When there are no quora, "home" stays (and shows the hero/CTA).
+createEffect(() => {
+  const list = displayedQuora()
+  if (view() === "home" && list.length > 0) {
+    openQuorum(list[0].id)
+  }
+})
+
 // ── Inbox subscription ────────────────────────────────────────────────────────
 // One active subscription, restarted when the active pubkey or the user's
 // kind-10050 relay list changes. Subscribing to userMessagingRelayList makes it
@@ -203,7 +243,14 @@ userMessagingRelayList.subscribe($list => {
 // Eagerly fetch relay lists and profiles for every member of every visible quorum,
 // so their names render in the list and detail views.
 createEffect(() => {
-  const pubkeys = new Set(displayedQuora().flatMap(q => q.members.map(m => m.pubkey)))
+  const list = displayedQuora()
+  const pubkeys = new Set(list.flatMap(q => q.members.map(m => m.pubkey)))
+  // Include each established quorum's OWN pubkey so its profile + relay lists load in the
+  // background — needed to render the quorum's name and to publish its signed events to
+  // its outbox (kind-10002 write) relays.
+  for (const q of list) {
+    if (q.quorumPubkey) { pubkeys.add(q.quorumPubkey) }
+  }
   for (const pk of pubkeys) {
     loadRelayList(pk)
     loadMessagingRelayList(pk)