Removed observations dropdown from main packet list, moved completely to packet analyzer

src/App.tsx

@@ -96,7 +96,7 @@ function AppInner() {
   }, []);
 
   const tabContent: Record<string, React.ReactNode> = {
-    Packets: <PacketList wsManager={wsManager} onAnalyze={handleAnalyze} selectedObservationId={selectedObservationId} onSelectObservation={setSelectedObservationId} />,
+    Packets: <PacketList wsManager={wsManager} onAnalyze={handleAnalyze} />,
     Nodes: <NodeTable wsManager={wsManager} />,
     Observers: <ObserverTable wsManager={wsManager} />,
     Channels: <ChannelList wsManager={wsManager} onAnalyze={handleAnalyze} />,

src/features/packets/PacketAnalyzerDrawer.tsx

@@ -149,7 +149,7 @@ export function PacketAnalyzerDrawer({ detail, selectedObservationId, open, onTo
               </DrawerSection>
             )}
 
-            {detail.observations.length > 1 && (
+            {detail.observations.length >= 1 && (
               <DrawerSection title={`Observations (${detail.observations.length})`} collapsible defaultOpen={false}>
                 <div className="flex flex-col gap-1">
                   {detail.observations.map((obs) => (

src/features/packets/PacketList.tsx

@@ -1,12 +1,10 @@
 import { useState, useCallback, useRef, useMemo } from "react";
 import { useSearchParams } from "react-router-dom";
-import { useQuery, keepPreviousData } from "@tanstack/react-query";
 import { usePackets } from "./usePackets";
 import { usePacketFilters, matchesFilters } from "./usePacketFilters";
 import { useWsPacketHandler, useWsLaggedHandler } from "../../hooks/useWsHandlers";
 import { PacketVirtualList } from "./PacketVirtualList";
 import { FilterBar } from "../../components/FilterBar";
-import { getPacketDetail } from "../../api/client";
 import { PAYLOAD_TYPE_NAMES, ROUTE_TYPE_NAMES } from "../../types/enums";
 import type { WsManager } from "../../api/ws-manager";
 
@@ -25,13 +23,11 @@ const ROUTE_OPTIONS = Object.entries(ROUTE_TYPE_NAMES).map(([value, label]) => (
 interface PacketListProps {
   wsManager: WsManager;
   onAnalyze: (hash: string | null) => void;
-  selectedObservationId: number | null;
-  onSelectObservation: (id: number | null) => void;
 }
 
 // main packet view: filters, banner, virtual list
 
-export function PacketList({ wsManager, onAnalyze, selectedObservationId, onSelectObservation }: PacketListProps) {
+export function PacketList({ wsManager, onAnalyze }: PacketListProps) {
   const [searchParams, setSearchParams] = useSearchParams();
   const { filters, setFilter, setSearch, setSearchField, clearFilters } = usePacketFilters();
   const {
@@ -59,26 +55,16 @@ export function PacketList({ wsManager, onAnalyze, selectedObservationId, onSele
 
   const [expandedHash, setExpandedHash] = useState<string | null>(() => searchParams.get("hash"));
 
-  const { data: expandedDetail } = useQuery({
-    queryKey: ["packet-detail", expandedHash],
-    queryFn: () => getPacketDetail(expandedHash!),
-    enabled: !!expandedHash,
-    staleTime: Infinity,
-    placeholderData: keepPreviousData,
-  });
-
   const handleToggleExpand = useCallback((hash: string) => {
-    setExpandedHash((prev) => {
-      const next = prev === hash ? null : hash;
-      onAnalyze(next);
-      setSearchParams((p) => {
-        const n = new URLSearchParams(p);
-        if (next) n.set("hash", next); else n.delete("hash");
-        return n;
-      }, { replace: true });
-      return next;
-    });
-  }, [setSearchParams, onAnalyze]);
+    const next = expandedHash === hash ? null : hash;
+    setExpandedHash(next);
+    onAnalyze(next);
+    setSearchParams((p) => {
+      const n = new URLSearchParams(p);
+      if (next) n.set("hash", next); else n.delete("hash");
+      return n;
+    }, { replace: true });
+  }, [expandedHash, setSearchParams, onAnalyze]);
 
   useWsPacketHandler(wsManager, handlePacketObservation);
   useWsLaggedHandler(wsManager, handleLagged);
@@ -143,10 +129,7 @@ export function PacketList({ wsManager, onAnalyze, selectedObservationId, onSele
           onScrollAwayFromTop={handleScrolledAway}
           scrollToTopRef={scrollToTopRef}
           expandedHash={expandedHash}
-          expandedDetail={expandedDetail}
           onToggleExpand={handleToggleExpand}
-          selectedObservationId={selectedObservationId}
-          onSelectObservation={onSelectObservation}
         />
       </div>
     </div>

src/features/packets/PacketRow.tsx

@@ -1,33 +1,29 @@
 import { formatHex, formatTimestamp } from "../../lib/formatters";
-import type { PacketSummary, PacketDetail } from "../../types/api";
+import type { PacketSummary } from "../../types/api";
 import { Badge } from "../../components/Badge";
 import { payloadTypeVariant } from "../../components/badge-utils";
-import { ObservationCard } from "./ObservationCard";
 
 interface PacketRowProps {
   packet: PacketSummary;
   expanded: boolean;
-  detail?: PacketDetail;
   isFresh?: boolean;
   onToggle: () => void;
-  selectedObservationId?: number | null;
-  onSelectObservation?: (id: number) => void;
 }
 
-// expandable packet card with observations
+// selectable packet card; observations live in the analyzer drawer
 
-export function PacketRow({ packet, expanded, detail, isFresh, onToggle, selectedObservationId, onSelectObservation }: PacketRowProps) {
+export function PacketRow({ packet, expanded, isFresh, onToggle }: PacketRowProps) {
   return (
     <div
       className={`group bg-bg-surface border rounded-md px-3.5 py-2.5 cursor-pointer ${
         expanded
-          ? "border-secondary bg-bg-raised"
+          ? "border-primary bg-primary/10"
           : isFresh
             ? "packet-fresh"
             : "border-border hover:border-text-dim/30 hover:bg-bg-raised/50"
       }`}
       onClick={() => onToggle()}
-      aria-expanded={expanded}
+      aria-pressed={expanded}
       tabIndex={0}
       onKeyDown={(e) => {
         if (e.key === "Enter" || e.key === " ") {
@@ -37,9 +33,6 @@ export function PacketRow({ packet, expanded, detail, isFresh, onToggle, selecte
       }}
     >
       <div className="flex items-center gap-2.5">
-        <span className="text-text-muted group-hover:text-text-normal text-[11px] w-3.5 font-mono transition-colors" aria-hidden>
-          {expanded ? "▾" : "▸"}
-        </span>
         <span className="font-mono text-xs font-semibold text-primary tracking-wider">
           {formatHex(packet.packetHash)}
         </span>
@@ -58,7 +51,7 @@ export function PacketRow({ packet, expanded, detail, isFresh, onToggle, selecte
         </span>
       </div>
 
-      <div className="flex items-center gap-2 mt-1 pl-6 text-[11px] text-text-dim">
+      <div className="flex items-center gap-2 mt-1 text-[11px] text-text-dim">
         <span className="font-mono text-[11px] text-text-muted uppercase tracking-wider bg-text-muted/8 px-1.5 py-px rounded-sm">
           {packet.routeTypeName || "Unknown"}
         </span>
@@ -75,19 +68,6 @@ export function PacketRow({ packet, expanded, detail, isFresh, onToggle, selecte
           </>
         )}
       </div>
-
-      {expanded && detail && (
-        <div className="mt-2 pl-6 flex flex-col gap-1" onClick={(e) => e.stopPropagation()}>
-          {detail.observations.map((obs) => (
-            <ObservationCard
-              key={obs.id}
-              observation={obs}
-              selected={selectedObservationId === obs.id}
-              onClick={onSelectObservation ? () => onSelectObservation(obs.id) : undefined}
-            />
-          ))}
-        </div>
-      )}
     </div>
   );
 }

src/features/packets/PacketVirtualList.tsx

@@ -1,6 +1,6 @@
 import { useRef, useState, useCallback, useEffect, useLayoutEffect } from "react";
 import { useVirtualizer } from "@tanstack/react-virtual";
-import type { PacketSummary, PacketDetail } from "../../types/api";
+import type { PacketSummary } from "../../types/api";
 import { PacketRow } from "./PacketRow";
 import { LIVE_BUFFER_CAP, SCROLL_TOP_THRESHOLD_PX, SCROLL_BOTTOM_THRESHOLD_PX } from "../../lib/constants";
 
@@ -12,10 +12,7 @@ interface PacketVirtualListProps {
   onScrollAwayFromTop: (isAway: boolean) => void;
   scrollToTopRef?: React.MutableRefObject<(() => void) | null>;
   expandedHash: string | null;
-  expandedDetail?: PacketDetail;
   onToggleExpand: (hash: string) => void;
-  selectedObservationId: number | null;
-  onSelectObservation: (id: number) => void;
 }
 
 // virtualized scroll list with fresh-item highlighting and infinite load
@@ -28,10 +25,7 @@ export function PacketVirtualList({
   onScrollAwayFromTop,
   scrollToTopRef,
   expandedHash,
-  expandedDetail,
   onToggleExpand,
-  selectedObservationId,
-  onSelectObservation,
 }: PacketVirtualListProps) {
   const parentRef = useRef<HTMLDivElement>(null);
   const knownHashes = useRef<Set<string>>(new Set());
@@ -177,11 +171,8 @@ export function PacketVirtualList({
                 <PacketRow
                   packet={packet}
                   expanded={expandedHash === packet.packetHash}
-                  detail={expandedHash === packet.packetHash ? expandedDetail : undefined}
                   isFresh={freshHashes.has(packet.packetHash)}
                   onToggle={() => onToggleExpand(packet.packetHash)}
-                  selectedObservationId={expandedHash === packet.packetHash ? selectedObservationId : null}
-                  onSelectObservation={onSelectObservation}
                 />
               </div>
             </div>