feat(pitch-deck): add per-version PDF export (standard + financial)

Adds /pitch-print/[versionId] — a server-rendered, print-CSS-optimized
page that generates investor-ready PDFs via the browser's native print
dialog (Save as PDF). Two variants per version:

- Standard PDF (9 pages): Cover, Problem, Solution, Products, Market,
  Team, Milestones, The Ask
- Financial PDF (+4 pages): adds Financials P&L table (aggregated from
  pitch_fm_results), Assumptions, Cap Table, Legal Disclaimer

White background with indigo accents, A4 landscape via @page CSS, all
color-rendered in print via print-color-adjust: exact. Auto-triggers
window.print() 900ms after load. Admin toolbar visible on screen only.

Export buttons added to /pitch-admin/versions/[id] detail page.

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

pitch-deck/app/pitch-admin/(authed)/versions/[id]/page.tsx

@@ -3,7 +3,7 @@
 import { useEffect, useState, useCallback } from 'react'
 import { useParams, useRouter } from 'next/navigation'
 import Link from 'next/link'
-import { ArrowLeft, Lock, Save, GitFork, Eye, Code } from 'lucide-react'
+import { ArrowLeft, Lock, Save, GitFork, Eye, Code, FileText, BarChart3 } from 'lucide-react'
 import TabEditor from './_components/TabEditors'
 
 const TABLE_LABELS: Record<string, string> = {
@@ -134,6 +134,20 @@ export default function VersionEditorPage() {
           >
             <Eye className="w-4 h-4" /> Preview
           </Link>
+          <Link
+            href={`/pitch-print/${id}`}
+            target="_blank"
+            className="bg-white/[0.06] hover:bg-white/[0.1] text-white text-sm px-4 py-2 rounded-lg flex items-center gap-2"
+          >
+            <FileText className="w-4 h-4" /> Export PDF
+          </Link>
+          <Link
+            href={`/pitch-print/${id}?financial=true`}
+            target="_blank"
+            className="bg-indigo-500/15 hover:bg-indigo-500/25 text-indigo-300 text-sm px-4 py-2 rounded-lg flex items-center gap-2"
+          >
+            <BarChart3 className="w-4 h-4" /> Export PDF + Financial
+          </Link>
           {isDraft && (
             <button onClick={commitVersion} className="bg-green-500/15 hover:bg-green-500/25 text-green-300 text-sm px-4 py-2 rounded-lg flex items-center gap-2">
               <Lock className="w-4 h-4" /> Commit