style: remove redundant content heading on Connections page

The Connections page displayed the page title three times (top bar, content
h1, and section label). Removed the content-area h1 heading and its subtitle
to match the pattern used by other pages like Board and Brain.

Author: marian2js

apps/desktop/src/features/connections/components/ConnectionsWorkspace.tsx

@@ -131,20 +131,6 @@ export function ConnectionsWorkspace({
 
   return (
     <div className="mx-auto flex w-full max-w-4xl flex-1 flex-col gap-4">
-      <div className="flex items-start gap-4">
-        <div className="flex size-12 shrink-0 items-center justify-center rounded-xl bg-primary/10 shadow-sm ring-1 ring-primary/15">
-          <Link2Icon className="size-6 text-primary" />
-        </div>
-        <div>
-          <h1 className="font-display text-[26px] font-bold tracking-[-0.02em] text-foreground">
-            Connections
-          </h1>
-          <p className="mt-1 text-[13px] leading-relaxed text-muted-foreground">
-            Manage AI providers and messaging channels.
-          </p>
-        </div>
-      </div>
-
       {errorMessage ? (
         <MessageBanner tone="error">{errorMessage}</MessageBanner>
       ) : null}

apps/desktop/src/features/connections/components/connections-no-redundant-heading.test.ts

@@ -0,0 +1,53 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+
+const src = readFileSync(
+  resolve(import.meta.dirname, "ConnectionsWorkspace.tsx"),
+  "utf-8",
+);
+
+// ---------------------------------------------------------------------------
+// AC1: No redundant h1 "Connections" heading in content area
+// ---------------------------------------------------------------------------
+
+void test("ConnectionsWorkspace does not render a standalone h1 heading", () => {
+  assert.ok(
+    !src.includes("<h1"),
+    "Must NOT have an h1 heading — the top bar already provides the page title",
+  );
+});
+
+// ---------------------------------------------------------------------------
+// AC2: No orphaned subtitle text
+// ---------------------------------------------------------------------------
+
+void test("ConnectionsWorkspace does not render the subtitle paragraph", () => {
+  assert.ok(
+    !src.includes("Manage AI providers and messaging channels"),
+    "Must NOT include the subtitle 'Manage AI providers and messaging channels' — it is redundant",
+  );
+});
+
+// ---------------------------------------------------------------------------
+// AC3: Section label h2 still present
+// ---------------------------------------------------------------------------
+
+void test("ConnectionsWorkspace still has section-label h2", () => {
+  assert.ok(
+    src.includes("section-label"),
+    "Must keep the section-label h2 for the Connections section",
+  );
+});
+
+// ---------------------------------------------------------------------------
+// AC4: Section content (table, empty state) still present
+// ---------------------------------------------------------------------------
+
+void test("ConnectionsWorkspace still renders connection table or empty state", () => {
+  assert.ok(
+    src.includes("<Table") || src.includes("No connections yet"),
+    "Must still render the connections table or empty state",
+  );
+});