feat: show P2P transfer and comparison progress

Show per-peer document revision counts and brief directional comparison
labels in both P2P panes and the editor status. Use the P2P projection for
the main status bar when P2P is the selected remote.

Retain labelled sequence progress for peers without statistics, and keep
adjunct P2P counters separate from the selected remote.

Requires the additive P2P statistics API in
vrtmrz/livesync-commonlib@be7bd0988e.
Consumer checks passed against a packed candidate; pin the published package
before integration.

src/features/P2PSync/P2PReplicator/P2PServerStatusPane.svelte

@@ -25,6 +25,7 @@
     import { SetupManager } from "@/modules/features/SetupManager";
     import { Menu } from "@/deps";
     import { $msg as translateMessage } from "@/common/translation";
+    import { observeP2PDiagnosticsProgress, type P2PStatusProjection } from "@/modules/features/P2PStatusLabel";
     import {
         hasExactP2PPeer,
         togglePersistedP2PPeer,
@@ -42,6 +43,7 @@
     let decidingPeerId = $state<string | null>(null);
     let replicatingPeerId = $state<string | null>(null);
     let communicatingUntil = $state<Record<string, number>>({});
+    let peerProgress = $state<P2PStatusProjection["peers"]>(new Map());
     const COMMUNICATION_HOLD_MS = 2500;
     // Later setting changes arrive through EVENT_SETTING_SAVED; these values only seed local state at mount time.
     const readCurrentSettings = () => core.services.setting.currentSettings();
@@ -125,6 +127,9 @@
     }
 
     onMount(() => {
+        const unsubscribeProgress = observeP2PDiagnosticsProgress(p2p.diagnostics, (snapshot) => {
+            peerProgress = snapshot.peers;
+        });
         const unsubscribe = eventHub.onEvent(EVENT_SERVER_STATUS, (status) => {
             serverInfo = status;
         });
@@ -159,6 +164,7 @@
         });
 
         return () => {
+            unsubscribeProgress();
             unsubscribe();
             unsubscribeReplicatorStatus();
             unsubscribeReplicatorProgress();
@@ -477,6 +483,14 @@
                             <div class="peer-meta">
                                 <span class="badge">{peer.platform}</span>
                             </div>
+                            {#if peerProgress.has(peer.peerId)}
+                                <div
+                                    class="peer-progress"
+                                    title="↑↓: transferred document revisions (seq for older peers); ⏩: compared changes-feed entries"
+                                >
+                                    {peerProgress.get(peer.peerId)?.message}
+                                </div>
+                            {/if}
                         </div>
                         <div class="peer-actions">
                             {#if isAccepted(peer)}
@@ -605,6 +619,12 @@
 </div>
 
 <style>
+    .peer-progress {
+        color: var(--text-muted);
+        font-size: var(--font-ui-small);
+        font-variant-numeric: tabular-nums;
+        overflow-wrap: anywhere;
+    }
     .p2p-container {
         display: flex;
         flex-direction: column;