fix(web): address review feedback on the monitoring column (#1616)

- ResizeHandle: clear the `resizing-col` body class on unmount so a drag
  interrupted by the handle unmounting (narrow past the breakpoint / disconnect)
  can't leave page-wide user-select:none / col-resize applied.
- Embedded monitor column now shows the full unfiltered stream instead of
  silently mirroring the full-size screen's live filter (the column has no
  filter control to explain an empty/partial list).
- MonitoringControls: give the SegmentedControl an aria-label ("Monitoring
  screen") so the tab group has an accessible name.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

clients/web/src/components/elements/ResizeHandle/ResizeHandle.test.tsx

@@ -86,6 +86,28 @@ describe("ResizeHandle", () => {
     expect(document.body.classList.contains("resizing-col")).toBe(false);
   });
 
+  it("clears the drag body class if it unmounts mid-drag", () => {
+    const onChange = vi.fn();
+    const onCommit = vi.fn();
+    const { unmount } = renderWithMantine(
+      <ResizeHandle
+        value={400}
+        min={320}
+        max={720}
+        onChange={onChange}
+        onCommit={onCommit}
+      />,
+    );
+    fireEvent.pointerDown(screen.getByRole("separator"), {
+      clientX: 500,
+      pointerId: 1,
+    });
+    expect(document.body.classList.contains("resizing-col")).toBe(true);
+    // No pointerup/cancel — the handle is removed from the tree first.
+    unmount();
+    expect(document.body.classList.contains("resizing-col")).toBe(false);
+  });
+
   it("ignores pointer moves when no drag is active", () => {
     const { handle, onChange, onCommit } = setup();
     fireEvent.pointerMove(handle, { clientX: 460, pointerId: 1 });

clients/web/src/components/elements/ResizeHandle/ResizeHandle.tsx

@@ -1,4 +1,9 @@
-import { useRef, type KeyboardEvent, type PointerEvent } from "react";
+import {
+  useEffect,
+  useRef,
+  type KeyboardEvent,
+  type PointerEvent,
+} from "react";
 import { Box } from "@mantine/core";
 
 export interface ResizeHandleProps {
@@ -45,6 +50,13 @@ export function ResizeHandle({
   // Gesture origin, captured on pointer down. `null` while idle.
   const drag = useRef<{ startX: number; startWidth: number } | null>(null);
 
+  // If the handle unmounts mid-drag — the window narrows past the split
+  // breakpoint or the server disconnects, either of which removes the handle
+  // from the tree before a pointerup/cancel fires — the drag body class would
+  // otherwise linger and leave `user-select: none` + `col-resize` applied
+  // page-wide. Clear it on unmount so the class is self-healing.
+  useEffect(() => () => document.body.classList.remove("resizing-col"), []);
+
   function handlePointerDown(e: PointerEvent<HTMLDivElement>) {
     drag.current = { startX: e.clientX, startWidth: value };
     // Optional chaining: happy-dom (unit tests) doesn't implement pointer

clients/web/src/components/groups/HistoryListPanel/HistoryListPanel.tsx

@@ -215,15 +215,26 @@ export function HistoryListPanel({
   const [pinnedOpen, setPinnedOpen] = useState(true);
   const [historyOpen, setHistoryOpen] = useState(true);
   const filteredEntries = useMemo(() => {
-    // `.filter()` returns a fresh array, so sorting in-place is safe.
+    // Embedded column: show the full stream (no filter sidebar to explain a
+    // mirrored filter). See LogStreamPanel (#1616). `.filter()` returns a fresh
+    // array, so sorting in-place is safe.
     const sorted = entries
-      .filter((e) =>
-        matchesFilters(e, searchText, visibleDirections, methodFilter),
+      .filter(
+        (e) =>
+          embedded ||
+          matchesFilters(e, searchText, visibleDirections, methodFilter),
       )
       .sort((a, b) => a.timestamp.getTime() - b.timestamp.getTime());
     if (sortDirection === "newest-first") sorted.reverse();
     return sorted;
-  }, [entries, searchText, visibleDirections, methodFilter, sortDirection]);
+  }, [
+    entries,
+    searchText,
+    visibleDirections,
+    methodFilter,
+    sortDirection,
+    embedded,
+  ]);
 
   const pinnedEntries = useMemo(
     () => filteredEntries.filter((e) => pinnedIds.has(e.id)),

clients/web/src/components/groups/LogStreamPanel/LogStreamPanel.tsx

@@ -80,13 +80,16 @@ export function LogStreamPanel({
 }: LogStreamPanelProps) {
   const viewportRef = useScrollMemory("logs-stream");
   const filteredEntries = useMemo(() => {
-    // `.filter()` returns a fresh array, so sorting in-place is safe.
+    // The embedded column has no filter sidebar, so it shows the full stream
+    // rather than mirroring the full-size screen's live filter with no visible
+    // control to explain it (#1616). `.filter()` returns a fresh array, so
+    // sorting in-place is safe.
     const sorted = entries
-      .filter((e) => matchesFilters(e, filterText, visibleLevels))
+      .filter((e) => embedded || matchesFilters(e, filterText, visibleLevels))
       .sort((a, b) => a.receivedAt.getTime() - b.receivedAt.getTime());
     if (sortDirection === "newest-first") sorted.reverse();
     return sorted;
-  }, [entries, filterText, visibleLevels, sortDirection]);
+  }, [entries, filterText, visibleLevels, sortDirection, embedded]);
 
   return (
     <PanelContainer>

clients/web/src/components/groups/MonitoringControls/MonitoringControls.test.tsx

@@ -33,6 +33,20 @@ describe("MonitoringControls", () => {
     expect(screen.queryByRole("radio", { name: "Network" })).toBeNull();
   });
 
+  it("gives the tab switcher an accessible name", () => {
+    const { container } = renderWithMantine(
+      <MonitoringControls
+        tabs={TABS}
+        value="Logs"
+        onChange={vi.fn()}
+        onClose={vi.fn()}
+      />,
+    );
+    expect(
+      container.querySelector('[aria-label="Monitoring screen"]'),
+    ).not.toBeNull();
+  });
+
   it("marks the active tab as selected", () => {
     renderWithMantine(
       <MonitoringControls

clients/web/src/components/groups/MonitoringControls/MonitoringControls.tsx

@@ -39,6 +39,7 @@ export function MonitoringControls({
         value={value}
         onChange={onChange}
         data={tabs}
+        aria-label="Monitoring screen"
       />
       <CloseButton aria-label="Close monitoring column" onClick={onClose} />
     </ControlsBar>

clients/web/src/components/groups/NetworkStreamPanel/NetworkStreamPanel.tsx

@@ -98,13 +98,17 @@ export function NetworkStreamPanel({
 }: NetworkStreamPanelProps) {
   const viewportRef = useScrollMemory("network-stream");
   const filteredEntries = useMemo(() => {
-    // `.filter()` returns a fresh array, so sorting in-place is safe.
+    // Embedded column: show the full stream (no filter sidebar to explain a
+    // mirrored filter). See LogStreamPanel (#1616). `.filter()` returns a fresh
+    // array, so sorting in-place is safe.
     const sorted = entries
-      .filter((e) => matchesFilters(e, filterText, visibleCategories))
+      .filter(
+        (e) => embedded || matchesFilters(e, filterText, visibleCategories),
+      )
       .sort((a, b) => a.timestamp.getTime() - b.timestamp.getTime());
     if (sortDirection === "newest-first") sorted.reverse();
     return sorted;
-  }, [entries, filterText, visibleCategories, sortDirection]);
+  }, [entries, filterText, visibleCategories, sortDirection, embedded]);
 
   const hasEntries = entries.length > 0;
   const hasResults = filteredEntries.length > 0;

clients/web/src/components/screens/HistoryScreen/HistoryScreen.test.tsx

@@ -126,4 +126,17 @@ describe("HistoryScreen", () => {
     // The sidebar (HistoryControls, with its Search box) is not rendered.
     expect(screen.queryByPlaceholderText("Search...")).toBeNull();
   });
+
+  it("shows the full stream when embedded, ignoring the live filter", () => {
+    // A search that matches nothing would empty the full-size screen...
+    renderWithMantine(
+      <HistoryScreen
+        {...baseProps}
+        ui={{ ...EMPTY_HISTORY_UI, search: "zzz-no-match" }}
+        embedded
+      />,
+    );
+    // ...but the embedded column shows the full stream (not the empty state).
+    expect(screen.queryByText("No request history")).toBeNull();
+  });
 });

clients/web/src/components/screens/LoggingScreen/LoggingScreen.test.tsx

@@ -146,4 +146,24 @@ describe("LoggingScreen", () => {
     // The sidebar (LogControls, with its Set button) is not rendered.
     expect(screen.queryByRole("button", { name: "Set" })).toBeNull();
   });
+
+  it("shows the full stream when embedded, ignoring the live filter", () => {
+    const entries = [
+      {
+        receivedAt: new Date(),
+        params: { level: "info" as const, data: "hello" },
+      },
+    ];
+    // A filter that would hide the entry on the full-size screen...
+    renderWithMantine(
+      <LoggingScreen
+        {...baseProps}
+        entries={entries}
+        ui={{ ...EMPTY_LOGS_UI, filterText: "zzz-no-match" }}
+        embedded
+      />,
+    );
+    // ...is ignored in the embedded, sidebar-less column.
+    expect(screen.getByText("hello")).toBeInTheDocument();
+  });
 });

clients/web/src/components/screens/NetworkScreen/NetworkScreen.test.tsx

@@ -179,4 +179,17 @@ describe("NetworkScreen", () => {
     // The stream toolbar (Export) is still present.
     expect(screen.getByRole("button", { name: "Export" })).toBeInTheDocument();
   });
+
+  it("shows the full stream when embedded, ignoring the live filter", () => {
+    // A filter that matches nothing would empty the full-size screen...
+    renderWithMantine(
+      <NetworkScreen
+        {...baseProps}
+        ui={{ ...EMPTY_NETWORK_UI, filterText: "zzz-no-match" }}
+        embedded
+      />,
+    );
+    // ...but the embedded column shows the full stream (not the empty state).
+    expect(screen.queryByText("No network requests")).toBeNull();
+  });
 });