feat: forum rich-text editor, emoji picker, mentions, discover nav, feed, uploads, profile

Forum:
- TipTap WYSIWYG editor with full toolbar
- @emoji-mart/react emoji picker (consistent with tweets)
- @mention autocomplete with user search API
- Fix PHP 8.4 parse errors in Blade templates
- Fix thread data display (paginator items)
- Align forum page widths to max-w-5xl

Discover:
- Extract shared _nav.blade.php partial
- Add missing nav links to for-you page
- Add Following link for authenticated users

Feed/Posts:
- Post model, controllers, policies, migrations
- Feed page components (PostComposer, FeedCard, etc)
- Post reactions, comments, saves, reports, sharing
- Scheduled publishing support
- Link preview controller

Profile:
- Profile page components (ProfileHero, ProfileTabs)
- Profile API controller

Uploads:
- Upload wizard enhancements
- Scheduled publish picker
- Studio status bar and readiness checklist

routes/console.php

@@ -87,6 +87,20 @@ Schedule::job(new \App\Jobs\RecComputeSimilarHybridJob())
     ->name('rec-compute-hybrid')
     ->withoutOverlapping();
 
+// ── Feed 2.0: Scheduled Posts ─────────────────────────────────────────────────
+// Publish queued posts every minute.
+Schedule::command('posts:publish-scheduled')
+    ->everyMinute()
+    ->name('publish-scheduled-posts')
+    ->withoutOverlapping();
+
+// ── Feed 2.0: Trending Cache Warm-up ─────────────────────────────────────────
+// Warm the post trending cache every 2 minutes (complements the 2-min TTL).
+Schedule::command('posts:warm-trending')
+    ->everyTwoMinutes()
+    ->name('warm-post-trending')
+    ->withoutOverlapping();
+
 // ── Ranking Engine V2 ──────────────────────────────────────────────────────────
 // Recalculate ranking_score + engagement_velocity every 30 minutes.
 // Also syncs V2 scores to rank_artwork_scores so list builds benefit.