fix(frontend): align-items:start — Upload no longer grows with Field Report

Remove align-items:stretch and flex-grow:1. Columns are now independent.
JS min-height already handles the collapsed-state alignment (INTEL DECODED
bar ≥ Classification height), so expanded Field Report no longer drags
Upload panel taller.

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

frontend/index.html

@@ -99,9 +99,8 @@ body::after{
 .refline{font-family:"Saira Condensed";font-size:13px;letter-spacing:4px;color:var(--gold-dim);text-transform:uppercase;}
 
 /* ---------- layout ---------- */
-.grid{display:grid;grid-template-columns:1fr 1fr;column-gap:26px;row-gap:22px;align-items:stretch;}
+.grid{display:grid;grid-template-columns:1fr 1fr;column-gap:26px;row-gap:22px;align-items:start;}
 .col{display:flex;flex-direction:column;gap:22px;}
-.col>.panel:nth-child(2){flex-grow:1;}
 
 /* ---------- riveted panel ---------- */
 .panel{position:relative;border-radius:12px;padding:20px 22px 22px;