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

resources/js/components/forum/Pagination.jsx

@@ -0,0 +1,93 @@
+import React from 'react'
+
+/**
+ * Pagination control that mirrors Laravel's paginator shape.
+ * Expects: { current_page, last_page, per_page, total, path } or links array.
+ */
+export default function Pagination({ meta, onPageChange }) {
+  const current  = meta?.current_page ?? 1
+  const lastPage = meta?.last_page ?? 1
+
+  if (lastPage <= 1) return null
+
+  const pages = buildPages(current, lastPage)
+
+  const go = (page) => {
+    if (page < 1 || page > lastPage || page === current) return
+    if (onPageChange) {
+      onPageChange(page)
+    } else {
+      // Fallback: navigate via URL
+      const url = new URL(window.location.href)
+      url.searchParams.set('page', page)
+      window.location.href = url.toString()
+    }
+  }
+
+  return (
+    <nav aria-label="Pagination" className="flex items-center justify-center gap-1.5">
+      {/* Prev */}
+      <button
+        onClick={() => go(current - 1)}
+        disabled={current <= 1}
+        className="inline-flex h-9 w-9 items-center justify-center rounded-xl border border-white/10 text-zinc-400 transition-colors hover:border-white/20 hover:text-white disabled:opacity-30 disabled:cursor-not-allowed"
+        aria-label="Previous page"
+      >
+        <svg width="14" height="14" viewBox="0 0 16 16" fill="none">
+          <path d="M10 4L6 8l4 4" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
+        </svg>
+      </button>
+
+      {pages.map((p, i) =>
+        p === '...' ? (
+          <span key={`dots-${i}`} className="px-1 text-xs text-zinc-600">…</span>
+        ) : (
+          <button
+            key={p}
+            onClick={() => go(p)}
+            aria-current={p === current ? 'page' : undefined}
+            className={[
+              'inline-flex h-9 min-w-[2.25rem] items-center justify-center rounded-xl text-sm font-medium transition-colors',
+              p === current
+                ? 'bg-sky-600/20 text-sky-300 border border-sky-500/30'
+                : 'border border-white/10 text-zinc-400 hover:border-white/20 hover:text-white',
+            ].join(' ')}
+          >
+            {p}
+          </button>
+        )
+      )}
+
+      {/* Next */}
+      <button
+        onClick={() => go(current + 1)}
+        disabled={current >= lastPage}
+        className="inline-flex h-9 w-9 items-center justify-center rounded-xl border border-white/10 text-zinc-400 transition-colors hover:border-white/20 hover:text-white disabled:opacity-30 disabled:cursor-not-allowed"
+        aria-label="Next page"
+      >
+        <svg width="14" height="14" viewBox="0 0 16 16" fill="none">
+          <path d="M6 4l4 4-4 4" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
+        </svg>
+      </button>
+    </nav>
+  )
+}
+
+/** Build a compact page-number array with ellipsis. */
+function buildPages(current, last) {
+  if (last <= 7) {
+    return Array.from({ length: last }, (_, i) => i + 1)
+  }
+
+  const pages = new Set([1, 2, current - 1, current, current + 1, last - 1, last])
+  const sorted = [...pages].filter(p => p >= 1 && p <= last).sort((a, b) => a - b)
+
+  const result = []
+  for (let i = 0; i < sorted.length; i++) {
+    if (i > 0 && sorted[i] - sorted[i - 1] > 1) {
+      result.push('...')
+    }
+    result.push(sorted[i])
+  }
+  return result
+}