feat: legend of status colors in assignment overview

src/Entity/Assignment.php

@@ -474,14 +474,20 @@ class Assignment implements BlameableEntityInterface, TimestampableEntityInterfa
         return $this->availableDispositions === $this->dispositions->count();
     }
 
+    public function isUnstaffed(): bool
+    {
+        return 0 === $this->dispositions->count();
+    }
+
     public function isPartlyStaffed(): bool
     {
         return $this->availableDispositions > $this->dispositions->count()
-            && 0 === $this->applications->count();
+            && 0 < $this->dispositions->count();
     }
 
     public function isStaffing(): bool
     {
-        return 0 === $this->dispositions->count() && 0 < $this->applications->count();
+        return $this->availableDispositions > $this->dispositions->count()
+            && 0 < $this->applications->count();
     }
 }