The live report: the card showed "On" where the user expected Idle,
Playing, Buffering or Off, and "On" appeared to override playing states.
Root cause: `state` returned MediaPlayerState.ON for two different
situations — "powered on with an app open and nothing playing" (tier 3.5)
and "we have no idea" (the fallthrough) — while the power gate above the
media tiers returned IDLE whenever power resolved to None, which is
exactly the case in which Jellyfin a media session DO know what is
playing. Media truth was therefore lost whenever the protocol push and
the ADB wake poll had not reported yet.
The ladder is now:
1. OFF — the power entity says off, or the protocol is_on push is
False. Explicit power outranks media, so a stale Jellyfin
session cannot resurrect playback on a device that is off.
2. intent — a just-sent play/pause/stop.
3. Jellyfin — playing / paused.
4. session — the ADB media session: buffering / playing / paused.
5. IDLE — ADB standby (powered but asleep), or the device is on
(protocol is_on / ADB awake / the plug) with nothing
playing. "Powered on, app open, nothing playing" is IDLE.
6. ON — nothing reported anything at all: no transport, no power
entity, no Jellyfin, no session. ON never masks a
playing/paused/buffering source and never appears while
any source reported a power or media state.
Buffering also carries the playback controls: a buffering session
advertises PLAY/PAUSE/STOP exactly like a playing one, and the
now-playing dict names it "buffering" instead of collapsing it into
"playing" and contradicting the entity state.
The module docstring documents the ladder and the ON-only-with-no-data
rule, and the new TestStateModelT55 / TestCurrentAppNameEndToEndT55 pin
one test per source (Jellyfin, intent, media session, power entity,
protocol push, ADB wake) that a reporting source outranks ON/IDLE.
Red-proof against the previous tree (new tests, old source): 21 failed /
17 passed, with the three headline symptoms visible as literal asserts —
"on" where "idle" belongs, "idle" where "on" belongs (no data), and
"playing" lost because power was unknown.
James Mackay
ccde3cff71