migrate-seasons.sh: add --cam flag, include Summer in search

--cam NAME overrides SUNRISE_CAM so the script can be used for any
camera (e.g. north).  Summer is now included in the find targets so
any ASTRO_YEAR=2025 Summer clips (Summer 2026) are also migrated.

https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ

migrate-seasons.sh

@@ -29,15 +29,19 @@ source "$SCRIPT_DIR/sky-cam.conf"
 
 DRY_RUN=false
 OLD_ROOT="$HOME/drives/local-2tb/movies/sunrise"
+CAM=""
 
-for arg in "$@"; do
-    case "$arg" in
-        --dry-run) DRY_RUN=true ;;
-        *)         OLD_ROOT="$arg" ;;
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        --dry-run)  DRY_RUN=true ;;
+        --cam)      shift; CAM="$1" ;;
+        --cam=*)    CAM="${1#--cam=}" ;;
+        *)          OLD_ROOT="$1" ;;
     esac
+    shift
 done
 
-CAM="$SUNRISE_CAM"
+[ -z "$CAM" ] && CAM="$SUNRISE_CAM"
 NEW_ROOT="$MOVIES_DIR/$CAM/2025"
 
 echo "Old archive : $OLD_ROOT"
@@ -91,6 +95,7 @@ while IFS= read -r -d '' src; do
 
 done < <(find \
     "$OLD_ROOT/Spring" \
+    "$OLD_ROOT/Summer" \
     "$OLD_ROOT/Winter" \
     "$OLD_ROOT/Autumn" \
     -name "*-final.mp4" -print0 2>/dev/null | sort -z)
@@ -117,7 +122,7 @@ $DRY_RUN && echo "Re-run without --dry-run to move the files." && echo ""
 
 echo "Next steps:"
 echo "  1. Build montages for completed movements:"
-echo "       ./montage-mvt.sh 2026-04-19 $CAM   # Spring Mvt1"
+echo "       ./montage-mvt.sh 2026-04-19 $CAM   # Spring Mvt1 (today is last day)"
 echo "       ./montage-mvt.sh 2026-01-18 $CAM   # Winter Mvt1"
 echo "       ./montage-mvt.sh 2026-02-16 $CAM   # Winter Mvt2"
 echo "       ./montage-mvt.sh 2026-03-19 $CAM   # Winter Mvt3"