fix(ui): harden ticket detail back navigation workflow

src/components/projects/ProjectDashboard.tsx

@@ -9,6 +9,7 @@ import {
   getProjectThroughput,
   getRuntimeActivity,
 } from "../../lib/api";
+import { getErrorMessage } from "../../lib/errors";
 import type {
   Project,
   WatchedTracker,
@@ -70,6 +71,7 @@ export default function ProjectDashboard() {
   const [activePolls, setActivePolls] = useState<Record<string, string>>({});
   const [activeAgents, setActiveAgents] = useState<Record<string, string>>({});
   const [isDeleteModalOpen, setIsDeleteModalOpen] = useState(false);
+  const [loadError, setLoadError] = useState("");
 
   function appendActivity(level: ActivityLevel, message: string) {
     const item: ActivityItem = {
@@ -84,16 +86,23 @@ export default function ProjectDashboard() {
 
   const loadData = useCallback(async () => {
     if (!projectId) return;
-    const [proj, trks, tkts, stats] = await Promise.all([
-      getProject(projectId),
-      listTrackers(projectId),
-      listProcessedTickets(projectId),
-      getProjectThroughput(projectId),
-    ]);
-    setProject(proj);
-    setTrackers(trks);
-    setTickets(tkts);
-    setThroughput(stats);
+    try {
+      const [proj, trks, tkts, stats] = await Promise.all([
+        getProject(projectId),
+        listTrackers(projectId),
+        listProcessedTickets(projectId),
+        getProjectThroughput(projectId),
+      ]);
+      setProject(proj);
+      setTrackers(trks);
+      setTickets(tkts);
+      setThroughput(stats);
+      setLoadError("");
+    } catch (error) {
+      const message = getErrorMessage(error);
+      setLoadError(message);
+      console.error("Failed to load project dashboard data", error);
+    }
   }, [projectId]);
 
   const syncRuntimeActivity = useCallback(async () => {
@@ -388,12 +397,14 @@ export default function ProjectDashboard() {
   }
 
   if (!project) {
-    return <div className="p-8 text-gray-400">Loading...</div>;
+    return (
+      <div className="p-8 text-gray-400">
+        {loadError ? `Unable to load project: ${loadError}` : "Loading..."}
+      </div>
+    );
   }
 
-  const recentTickets = [...tickets]
-    .sort((a, b) => Date.parse(b.detected_at) - Date.parse(a.detected_at))
-    .slice(0, 10);
+  const recentTickets = tickets.slice(0, 10);
   const activePollList = Object.entries(activePolls);
   const activeAgentList = Object.values(activeAgents);
   const done24h = throughput?.done_last_24h ?? 0;

src/components/tickets/TicketDetail.tsx

@@ -292,7 +292,7 @@ export default function TicketDetail() {
       <div className="mb-6 flex items-center justify-between">
         <div>
           <button
-            onClick={() => navigate(`/projects/${ticket.project_id}`)}
+            onClick={() => navigate(`/projects/${ticket.project_id}/tickets`)}
             className={buttonClass({ variant: "ghost", size: "xs" })}
           >
             Back