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/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();
+  });
 });