fix(android): hold BOTH Wi-Fi locks while streaming — HIGH_PERF alone is a no-op

The baseline stream held only WIFI_MODE_FULL_HIGH_PERF, which is deprecated
AND non-functional on recent Android — so with the low-latency toggle off (the
default) Wi-Fi power save stayed fully active: downlink delivery clumped at
beacon intervals (a few hundred ms of latency mush, sawtoothing bitrate) and
the AP's power-save buffer periodically overflowed, killing whole frames every
few seconds (the host log's alternating loss_ppm=0/50000). Now every stream
holds FULL_LOW_LATENCY (API 29+, the only effective power-save disable;
foreground + screen-on, which a stream always is) AND FULL_HIGH_PERF (covers
older releases) — the same pair Moonlight holds. The experimental toggle no
longer selects the lock mode.

Also: declare tracing's "log" feature explicitly in the native crate (core
transport warnings → logcat must not hinge on quinn's default features), and
align the low-latency toggle's copy with its actual scope.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

clients/android/native/Cargo.toml

@@ -31,6 +31,14 @@ mdns-sd = "0.20"
 # via `ndk`, the Opus codec) is only pulled in for the real `*-linux-android` targets.
 [target.'cfg(target_os = "android")'.dependencies]
 android_logger = "0.14"
+# Feature bridge, no code here: punktfunk-core logs through `tracing`, but this client only
+# installs `android_logger` (a `log` backend). Core transport warnings (e.g. "UDP socket buffer
+# capped well below target") reach logcat only via tracing's "log" feature, which forwards events
+# as `log` records when no tracing subscriber is set (always, here). Today that feature happens to
+# be enabled transitively — quinn's default `log` feature unifies `tracing/log` onto the whole
+# graph — but nothing about this client's logging should hinge on a QUIC crate's default feature
+# set, so declare it explicitly.
+tracing = { version = "0.1", default-features = false, features = ["std", "log"] }
 # NDK bindings. "media" = AMediaCodec/ANativeWindow (video); "audio" = AAudio (audio playback).
 # Pure-Rust FFI to libmediandk/libnativewindow/libaaudio — no C++/libc++_shared to bundle. Decode +
 # audio run entirely in Rust on native threads (the "no async on the hot path" invariant).