feat(fusion_clock): NFC photo capture — 10s auto-capture, vertical oval, cache-busted avatar

- Profile photo DID save (verified: image_1920 attachment persists); the
  "doesn't update" was a browser-cache miss. Add ?unique=<write_date> to the
  result-card avatar URL so a freshly-captured photo shows on clock in/out.
- Capture now starts a 10-second countdown (time to get into frame) then
  auto-snaps; the button toggles to Cancel while counting.
- Face guide is now a VERTICAL oval (aspect-ratio 3/4) over a portrait stage —
  it was rendering horizontal. Faces are taller than wide.

Deployed live to entech (LXC 111) as 19.0.3.11.3; frontend bundle verified to
compile clean and contain the new rules.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

fusion_clock/static/src/scss/nfc_kiosk.scss

@@ -683,9 +683,10 @@ html:has(#nfc_kiosk_root) {
 }
 .nfc-photo-stage {
     position: relative;
-    width: 100%;
-    aspect-ratio: 3 / 4;
-    max-height: 56vh;
+    aspect-ratio: 3 / 4;     // portrait — width follows the (height-driven) box
+    height: 56vh;
+    max-height: 440px;
+    max-width: 100%;
     margin: 0 auto;
     border-radius: 1rem;
     overflow: hidden;
@@ -703,16 +704,36 @@ html:has(#nfc_kiosk_root) {
 .nfc-photo-video { transform: scaleX(-1); }   // mirror for a natural selfie view
 .nfc-photo-guide {
     position: absolute;
-    top: 48%;
+    top: 47%;
     left: 50%;
-    width: 60%;
-    height: 66%;
+    width: 54%;
+    aspect-ratio: 3 / 4;     // VERTICAL oval — a face is taller than it is wide
     transform: translate(-50%, -50%);
     border: 3px dashed rgba(255, 255, 255, 0.92);
     border-radius: 50%;
     box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5);   // dim everything outside the oval
     pointer-events: none;
 }
+.nfc-photo-countdown {
+    position: absolute;
+    top: 47%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    font-size: 6rem;
+    font-weight: 200;
+    line-height: 1;
+    color: #fff;
+    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.85);
+    pointer-events: none;
+    opacity: 0;
+
+    &.is-active { opacity: 1; animation: nfc-cd-pop 1s ease-out infinite; }
+}
+@keyframes nfc-cd-pop {
+    0%   { transform: translate(-50%, -50%) scale(1.25); opacity: 0.35; }
+    40%  { opacity: 1; }
+    100% { transform: translate(-50%, -50%) scale(0.9);  opacity: 0.7; }
+}
 .nfc-photo-hint {
     position: absolute;
     left: 0;