Rename sunrise_video.10s.sh → daily_sunrise_video.sh

Name no longer implies a fixed duration. Updated all references:
install.sh, sky-cam.conf script map, systemd/sky-cam-sunrise.service.

https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ

install.sh

@@ -77,7 +77,7 @@ echo "  wrote sky-cam-notify-failure@.service"
 # Sunrise video → Mattermost (run after sunrise window ends)
 write_service "sky-cam-sunrise" \
     "daily sunrise video → Mattermost" \
-    "sunrise_video.10s.sh" \
+    "daily_sunrise_video.sh" \
     "After=network-online.target\nWants=network-online.target\n"
 write_timer "sky-cam-sunrise" "daily sunrise video" "*-*-* 09:00:00"