Complete dryer coverage from issue #14 screenshots (DV90BB5245AES1)

Name the two remaining unidentified course codes (0x21 Hygiene Care,
0x4C Air Refresh) by matching the SmartThings app's course-list order
against editCourseList in the reporter's dump.

Also close three entity gaps the screenshots surfaced that v0.6.0
missed: dry level was read-only despite the app exposing a writable
Level 1/2/3 picker; the app's "AI pattern" toggle (AiOption_On/Off)
and "Auto cycle link" toggle (/cycleinterface/vs/0, previously
globally ignored as always-empty on washer dumps) were both unbound.
Scope that ignore to washer.py now that the dryer binds it for real.

tests/fixtures/golden/dryer.json

@@ -1,6 +1,8 @@
 {
   "state_keys": [
+    "ai_pattern",
     "alarm_code",
+    "auto_cycle_link",
     "buzzer_sound",
     "child_lock",
     "cycle",