fix(web): reuse open issue tabs and keep the tracker filter reachable

apps/web/src/rightPanelStore.test.ts

@@ -39,6 +39,22 @@ async function reloadRightPanelStore() {
 }
 
 describe("rightPanelStore", () => {
+  it("reuses an open issue tab when the same issue is reopened without its host", () => {
+    const store = useRightPanelStore.getState();
+    const issue = {
+      environmentId: "env-1",
+      projectId: "project-a",
+      tracker: "github",
+      scope: "xgooz3x/tolarian-academy",
+      key: "53",
+    };
+    store.openIssue(refA, { ...issue, host: "github.com", url: "https://github.com/x/53" });
+    store.openIssue(refA, issue);
+    const state = selectThreadRightPanelState(useRightPanelStore.getState().byThreadKey, refA);
+    expect(state.surfaces.filter((surface) => surface.kind === "issue")).toHaveLength(1);
+    expect(state.activeSurfaceId).toBe(state.surfaces[0]!.id);
+  });
+
   it("records single and bulk tab closes, newest first", () => {
     const store = useRightPanelStore.getState();
     const pr = pullRequestSurface({

apps/web/src/rightPanelStore.ts

@@ -805,6 +805,20 @@ export const useRightPanelStore = create<RightPanelStoreState>()(
       openIssue: (ref, target) =>
         set((state) =>
           userAction(state, scopedThreadKey(ref), (current) => {
+            // A link (the page URL) names an issue without its host; reuse the tab a row opened.
+            const existing =
+              target.host === undefined
+                ? current.surfaces.find(
+                    (entry) =>
+                      entry.kind === "issue" &&
+                      entry.environmentId === target.environmentId &&
+                      entry.projectId === target.projectId &&
+                      entry.tracker === target.tracker &&
+                      entry.scope.toLowerCase() === target.scope.toLowerCase() &&
+                      entry.key === target.key,
+                  )
+                : undefined;
+            if (existing) return { ...current, isOpen: true, activeSurfaceId: existing.id };
             const surface = issueSurface(target);
             const next = upsertSurface(current, surface);
             return target.url

apps/web/src/routes/_chat.issues.tsx

@@ -703,7 +703,9 @@ function IssuesRoute() {
                   options={INVOLVEMENT_TABS}
                   onChange={(who) => updateSearch({ who })}
                 />
-                {hostOptions.length > 2 ? (
+                {/* The server filters by host, so a filtered page only knows its own tracker; keep
+                    the menu while filtered so "All trackers" stays reachable. */}
+                {hostOptions.length > 2 || search.host ? (
                   <FilterMenu
                     label="Filter by tracker"
                     value={search.host ?? ""}