diff --git a/app/AGENTS.md b/app/AGENTS.md
index 24f5aab..2597baf 100644
--- a/app/AGENTS.md
+++ b/app/AGENTS.md
@@ -20,7 +20,7 @@ app/
 ├── database.py          # SQLite connection + base schema + migration runner
 ├── migrations.py        # Schema migrations (SQLite user_version)
 ├── models.py            # Pydantic request/response models
-├── repository/          # Data access layer (contacts, channels, messages, raw_packets, settings)
+├── repository/          # Data access layer (contacts, channels, messages, raw_packets, settings, fanout)
 ├── radio.py             # RadioManager + auto-reconnect monitor
 ├── radio_sync.py        # Polling, sync, periodic advertisement loop
 ├── decoder.py           # Packet parsing/decryption
@@ -29,6 +29,7 @@ app/
 ├── websocket.py         # WS manager + broadcast helpers
 ├── fanout/              # Fanout bus: MQTT, bots, webhooks, Apprise (see fanout/AGENTS_fanout.md)
 ├── dependencies.py      # Shared FastAPI dependency providers
+├── path_utils.py        # Path hex rendering and hop-width helpers
 ├── keystore.py          # Ephemeral private/public key storage for DM decryption
 ├── frontend_static.py   # Mount/serve built frontend (production)
 └── routers/
@@ -296,6 +297,10 @@ tests/
 ├── test_send_messages.py       # Outgoing messages, bot triggers, concurrent sends
 ├── test_settings_router.py     # Settings endpoints, advert validation
 ├── test_statistics.py          # Statistics aggregation
+├── test_channel_sender_backfill.py # Sender key backfill for channel messages
+├── test_fanout_hitlist.py      # Fanout-related hitlist regression tests
+├── test_main_startup.py        # App startup and lifespan
+├── test_path_utils.py          # Path hex rendering helpers
 ├── test_websocket.py           # WS manager broadcast/cleanup
 └── test_websocket_route.py     # WS endpoint lifecycle
 ```
diff --git a/app/routers/packets.py b/app/routers/packets.py
index b08754b..8142e67 100644
--- a/app/routers/packets.py
+++ b/app/routers/packets.py
@@ -71,6 +71,7 @@ async def _run_historical_channel_decryption(
                 timestamp=result.timestamp,
                 received_at=packet_timestamp,
                 path=path_hex,
+                path_len=packet_info.path_length if packet_info else None,
                 realtime=False,  # Historical decryption should not trigger fanout
             )
 
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index b6e3df0..6e8b9a9 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -694,7 +694,10 @@ export function App() {
           </SheetContent>
         </Sheet>
 
-        <main id="main-content" className="flex-1 flex flex-col bg-background min-w-0">
+        <main
+          id="main-content"
+          className="flex-1 flex flex-col bg-background min-w-0 min-h-0 overflow-hidden"
+        >
           <div
             className={cn(
               'flex-1 flex flex-col min-h-0',
@@ -734,7 +737,7 @@ export function App() {
                   <h2 className="flex justify-between items-center px-4 py-2.5 border-b border-border font-semibold text-base">
                     Raw Packet Feed
                   </h2>
-                  <div className="flex-1 overflow-hidden">
+                  <div className="flex-1 min-h-0 overflow-hidden relative">
                     <RawPacketList packets={rawPackets} />
                   </div>
                 </>
diff --git a/frontend/src/components/RawPacketList.tsx b/frontend/src/components/RawPacketList.tsx
index 823ff1a..4e90921 100644
--- a/frontend/src/components/RawPacketList.tsx
+++ b/frontend/src/components/RawPacketList.tsx
@@ -202,14 +202,14 @@ export function RawPacketList({ packets }: RawPacketListProps) {
 
   if (packets.length === 0) {
     return (
-      <div className="h-full overflow-y-auto p-5 text-center text-muted-foreground">
+      <div className="absolute inset-0 overflow-y-auto p-5 text-center text-muted-foreground">
         No packets received yet. Packets will appear here in real-time.
       </div>
     );
   }
 
   return (
-    <div className="h-full overflow-y-auto p-4 flex flex-col gap-2" ref={listRef}>
+    <div className="absolute inset-0 overflow-y-auto p-4 flex flex-col gap-2" ref={listRef}>
       {sortedPackets.map(({ packet, decoded }) => (
         <div
           key={getRawPacketObservationKey(packet)}