Adds two small, additive fridge capabilities:
- AI_ENERGY_LEVEL: a select on /energy/ailevel/vs/0 exposing the AI
energy-saving level, gated behind supportedAiLevel actually offering
more than one choice (previously globally ignored since every dump
seen only reported a single supported level).
- selfcheck_error: a diagnostic sensor on the existing SELF_CHECK
capability surfacing x.com.samsung.da.error from the last self-check,
for hardware that reports it.
This does not touch FLEX_ZONE, /mode/vs/0, or /icemaker/status/0.
Companion to the git-filter-repo pass that just stripped every prior
version of these two files (which carried a real Samsung account email,
Bixby access token/device-ID hash, and real WiFi/BLE MAC addresses) out of
history entirely. This commit reintroduces only the already-redacted
content, so the real values are no longer reachable from any commit.