fix(skill_preflight): add fohdin build support alongside hammerdin

- Changed char_type check from == to in (hammerdin, fohdin)
- Uses getattr(config_instance, char_type, {}) to load correct build config
- Enables proper skill preflight validation for FOH paladin builds

src/utils/skill_preflight.py

@@ -59,8 +59,8 @@ def get_build_skill_checks(config_instance: Config, char_type: str | None = None
     char_type = char_type or config_instance.char.get("type", "")
     checks = []
 
-    if char_type == "hammerdin":
-        build_cfg = getattr(config_instance, "hammerdin", {})
+    if char_type in ("hammerdin", "fohdin"):
+        build_cfg = getattr(config_instance, char_type, {})
         # blessed hammer lives on left-click; auras/teleport go to right
         # hotkeys select onto the RIGHT slot; left holds the hammer permanently
         checks.append(SkillCheck(char_type, "blessed_hammer",