feat: fix travel placement bug, add theme-based alternate icons, fix animated background crash

- Fix repeat-city travel placement: use stop indices instead of global city name
  matching so Follow Team trips with repeat cities show travel correctly
- Add TravelPlacement helper and regression tests (7 tests)
- Add alternate app icons for each theme, auto-switch on theme change
- Fix index-out-of-range crash in AnimatedSportsBackground (19 configs, was iterating 20)
- Add marketing video configs, engine, and new video components
- Add docs and data exports

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

marketing-videos/scripts/render-week1.sh

@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+#
+# Batch render all 20 Week 1 Reels videos.
+# Usage: bash scripts/render-week1.sh [--concurrency N]
+#
+# Options:
+#   --concurrency N   Number of parallel renders (default: 2)
+#   --ids ID1,ID2     Comma-separated list of specific IDs to render
+#
+set -euo pipefail
+
+CONCURRENCY=${1:-2}
+OUT_DIR="out/week1"
+mkdir -p "$OUT_DIR"
+
+IDS=(
+  V03-H01
+  V10-H01
+  V03-H02
+  V10-H02
+  V03-H03
+  V17-H01
+  V17-H02
+  V06-H01
+  V08-H01
+  V05-LA-01
+  V05-NY-01
+  V05-TX-01
+  V05-CA-01
+  V08-LA-01
+  V04-H01
+  V20-H01
+  V14-H01
+  V04-H02
+  V02-H01
+  V19-H01
+)
+
+# Parse optional --ids flag
+if [[ "${1:-}" == "--ids" ]]; then
+  IFS=',' read -ra IDS <<< "${2:-}"
+  shift 2
+fi
+
+TOTAL=${#IDS[@]}
+DONE=0
+FAILED=0
+
+echo ""
+echo "=== SportsTime Week 1 Batch Render ==="
+echo "  Videos: $TOTAL"
+echo "  Output: $OUT_DIR/"
+echo "  Concurrency: $CONCURRENCY"
+echo ""
+
+render_one() {
+  local id=$1
+  local out="$OUT_DIR/${id}.mp4"
+  echo "[START] $id → $out"
+  if npx remotion render "$id" "$out" --log=error 2>&1; then
+    echo "[DONE]  $id ✓"
+    return 0
+  else
+    echo "[FAIL]  $id ✗"
+    return 1
+  fi
+}
+
+export -f render_one
+export OUT_DIR
+
+# Run renders with controlled concurrency using xargs
+printf '%s\n' "${IDS[@]}" | xargs -P "$CONCURRENCY" -I {} bash -c 'render_one "$@"' _ {}
+
+echo ""
+echo "=== Render Complete ==="
+echo "  Output: $OUT_DIR/"
+ls -lh "$OUT_DIR"/*.mp4 2>/dev/null || echo "  (no .mp4 files found - check errors above)"