refactor(rsocials): consolidate threads + thread editor into single nav item

The thread gallery already has a "New Thread" button linking to the editor,
so a separate hub button and subnav pill for the editor is redundant.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

modules/rsocials/mod.ts

@@ -1121,17 +1121,10 @@ routes.get("/", (c) => {
       </div>
     </a>
     <a href="${base}/threads">
-      <span class="nav-icon">📋</span>
-      <div class="nav-body">
-        <h3>Threads</h3>
-        <p>Browse saved thread drafts and published threads</p>
-      </div>
-    </a>
-    <a href="${base}/thread-editor">
       <span class="nav-icon">🧵</span>
       <div class="nav-body">
-        <h3>Thread Editor</h3>
-        <p>Compose and preview tweet threads with live card preview</p>
+        <h3>Threads</h3>
+        <p>Browse, compose, and schedule tweet threads with live preview</p>
       </div>
     </a>
     <a href="${base}/newsletter-list">
@@ -1199,17 +1192,10 @@ export const socialsModule: RSpaceModule = {
 		},
 		{
 			path: "threads",
-			title: "Thread Gallery",
-			icon: "📋",
-			tagline: "rSocials Tool",
-			description: "Browse all saved thread drafts in your community. Find inspiration, remix threads, or pick up where you left off.",
-		},
-		{
-			path: "thread-editor",
-			title: "Thread Editor",
+			title: "Threads",
 			icon: "🧵",
 			tagline: "rSocials Tool",
-			description: "Compose, preview, and schedule tweet threads with a live card-by-card preview. Save drafts, generate share images, and publish when ready.",
+			description: "Browse, compose, and schedule tweet threads with a live card-by-card preview. Save drafts, generate share images, and publish when ready.",
 			features: [
 				{ icon: "✍️", title: "Live Preview", text: "See your thread as tweet cards in real time as you type, with character counts and thread numbering." },
 				{ icon: "💾", title: "Save & Edit Drafts", text: "Save thread drafts to your space, revisit and refine them before publishing." },