feat(badges): static RGB gradient for punch holes on print, cycling on screen

Each rainbow-enabled slot now has a companion print-only div with an inline
SVG linearGradient (R→Y→G→C→B→M spectrum). On screen: the animated
hue-rotate div cycles. On print: CSS hides the animated div and shows the
static gradient instead. X lines print in semi-transparent black over the
gradient fill for visibility.

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

src/routes/events/[event_id]/(badges)/badges/[badge_id]/ae_comp__badge_obj_view.svelte

@@ -710,6 +710,18 @@ const code_to_icon: {
                         <line x1="50" y1="0" x2="0" y2="8" stroke={punch_holes_colors.left.fg} stroke-width="1"/>
                     </svg>
                 </div>
+                {#if punch_holes_left_rainbow}
+                <div class="punch_hole_marker punch_hole_print_rgb pointer-events-none absolute"
+                     aria-hidden="true"
+                     style="top: calc(0.25in + 1mm); left: calc(0.375in + 1mm); width: calc(0.625in - 2mm); height: calc(0.125in - 2mm); z-index: 10;">
+                    <svg width="100%" height="100%" viewBox="0 0 50 8" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg">
+                        <defs><linearGradient id="ph_rg_left" x1="0%" y1="0%" x2="100%" y2="0%"><stop offset="0%" stop-color="#ff0000"/><stop offset="20%" stop-color="#ffff00"/><stop offset="40%" stop-color="#00ff00"/><stop offset="60%" stop-color="#00ffff"/><stop offset="80%" stop-color="#0000ff"/><stop offset="100%" stop-color="#ff00ff"/></linearGradient></defs>
+                        <rect x="0.5" y="0.5" width="49" height="7" fill="url(#ph_rg_left)" stroke="url(#ph_rg_left)" stroke-width="1" stroke-dasharray="4,2"/>
+                        <line x1="0" y1="0" x2="50" y2="8" stroke="#000" stroke-width="1" stroke-opacity="0.45"/>
+                        <line x1="50" y1="0" x2="0" y2="8" stroke="#000" stroke-width="1" stroke-opacity="0.45"/>
+                    </svg>
+                </div>
+                {/if}
             {/if}
             {#if punch_holes_right}
                 <div class="punch_hole_marker pointer-events-none absolute"
@@ -722,6 +734,18 @@ const code_to_icon: {
                         <line x1="50" y1="0" x2="0" y2="8" stroke={punch_holes_colors.right.fg} stroke-width="1"/>
                     </svg>
                 </div>
+                {#if punch_holes_right_rainbow}
+                <div class="punch_hole_marker punch_hole_print_rgb pointer-events-none absolute"
+                     aria-hidden="true"
+                     style="top: calc(0.25in + 1mm); right: calc(0.375in + 1mm); width: calc(0.625in - 2mm); height: calc(0.125in - 2mm); z-index: 10;">
+                    <svg width="100%" height="100%" viewBox="0 0 50 8" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg">
+                        <defs><linearGradient id="ph_rg_right" x1="0%" y1="0%" x2="100%" y2="0%"><stop offset="0%" stop-color="#ff0000"/><stop offset="20%" stop-color="#ffff00"/><stop offset="40%" stop-color="#00ff00"/><stop offset="60%" stop-color="#00ffff"/><stop offset="80%" stop-color="#0000ff"/><stop offset="100%" stop-color="#ff00ff"/></linearGradient></defs>
+                        <rect x="0.5" y="0.5" width="49" height="7" fill="url(#ph_rg_right)" stroke="url(#ph_rg_right)" stroke-width="1" stroke-dasharray="4,2"/>
+                        <line x1="0" y1="0" x2="50" y2="8" stroke="#000" stroke-width="1" stroke-opacity="0.45"/>
+                        <line x1="50" y1="0" x2="0" y2="8" stroke="#000" stroke-width="1" stroke-opacity="0.45"/>
+                    </svg>
+                </div>
+                {/if}
             {/if}
             {#if punch_holes_center}
                 <div class="punch_hole_marker pointer-events-none absolute"
@@ -734,6 +758,18 @@ const code_to_icon: {
                         <line x1="50" y1="0" x2="0" y2="8" stroke={punch_holes_colors.center.fg} stroke-width="1"/>
                     </svg>
                 </div>
+                {#if punch_holes_center_rainbow}
+                <div class="punch_hole_marker punch_hole_print_rgb pointer-events-none absolute"
+                     aria-hidden="true"
+                     style="top: calc(0.25in + 1mm); left: 50%; transform: translateX(-50%); width: calc(0.625in - 2mm); height: calc(0.125in - 2mm); z-index: 10;">
+                    <svg width="100%" height="100%" viewBox="0 0 50 8" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg">
+                        <defs><linearGradient id="ph_rg_center" x1="0%" y1="0%" x2="100%" y2="0%"><stop offset="0%" stop-color="#ff0000"/><stop offset="20%" stop-color="#ffff00"/><stop offset="40%" stop-color="#00ff00"/><stop offset="60%" stop-color="#00ffff"/><stop offset="80%" stop-color="#0000ff"/><stop offset="100%" stop-color="#ff00ff"/></linearGradient></defs>
+                        <rect x="0.5" y="0.5" width="49" height="7" fill="url(#ph_rg_center)" stroke="url(#ph_rg_center)" stroke-width="1" stroke-dasharray="4,2"/>
+                        <line x1="0" y1="0" x2="50" y2="8" stroke="#000" stroke-width="1" stroke-opacity="0.45"/>
+                        <line x1="50" y1="0" x2="0" y2="8" stroke="#000" stroke-width="1" stroke-opacity="0.45"/>
+                    </svg>
+                </div>
+                {/if}
             {/if}
 
             <!-- Background image bleed container.
@@ -1336,10 +1372,12 @@ const code_to_icon: {
 
 <style>
 /*
- * Punch-hole rainbow animation: continuously rotates the hue of the marker div.
+ * Punch-hole rainbow: animated hue-rotate on screen; static SVG gradient on print.
- * A saturated base color (PH_RAINBOW_FG) is used so the full visible spectrum appears.
+ * .punch_hole_rainbow   — screen display, cycling animation
- * On print the animation freezes at whatever frame the browser captures — this is fine,
+ * .punch_hole_print_rgb — print-only companion div with built-in linearGradient SVG
- * the marker still shows in some vivid color and remains within the hole boundary.
+ *
+ * On print: the animated div is hidden; the gradient div appears in its place.
+ * The gradient is defined inside each SVG so it's self-contained per slot.
  */
 @keyframes ae_punch_hole_rainbow {
     from { filter: hue-rotate(0deg); }
@@ -1348,6 +1386,13 @@ const code_to_icon: {
 .punch_hole_rainbow {
     animation: ae_punch_hole_rainbow 2.5s linear infinite;
 }
+.punch_hole_print_rgb {
+    display: none;
+}
+@media print {
+    .punch_hole_rainbow  { display: none; }
+    .punch_hole_print_rgb { display: block; }
+}
 
 /*
      * Force light-mode rendering on the badge print area.