abbreviate_wind_direction matched full words (NORTHWEST, NORTH, ...), but NOAA's forecast windDirection is always an abbreviation like WNW, SSE or N. Every value fell through to the fallback, which kept the first two characters behind a generic wind emoji, so replies read '💨WN2' or '💨SS1' and even plain N and NE lost their arrow. The 16 compass abbreviations now return the nearest 8-point arrow plus the abbreviation; full words and other values behave as before. Found while pinning wx's formatting on real NOAA responses for the maintainability refactor.
