feat(voice): replaced miniaudio with native platform audio backends

- Replaced the miniaudio dependency with custom OS audio device abstractions and backends.
- Implemented platform-specific audio playback and capture for macOS (Audio Queue), Windows (WASAPI), and Linux (PulseAudio/ALSA).
- Added a fallback stub backend returning errors for unsupported platforms.
- Updated audio stream handling with reliable fill guard wakeups and streamlined rate validation.

Cargo.toml

@@ -33,20 +33,6 @@ strip = true
 # (see crates/pi-natives/src/crash_handler.rs).
 panic = "unwind"
 
-# rustc ICEs codegenning `MaybeUninit<maudio_sys::ffi::ma_fence>` — a union with
-# ScalarPair backend repr on x86_64-pc-windows-msvc — once the MIR opts that run
-# from opt-level 2 upward const-fold it into an `Uninit` operand
-# (`rustc_codegen_ssa/src/mir/block.rs`: "codegen_argument: OperandRef(Uninit …)
-# invalid for pair argument"). Hit by the rustup toolchain this repo pins
-# (nightly-2026-07-28) on the local napi path (`packages/natives` →
-# `build:bindings`); Bazel's older pin (nightly/2026-04-29, MODULE.bazel) is
-# unaffected, which is why CI never saw it. opt-level 1 keeps those MIR opts off.
-# maudio is a thin FFI shim — miniaudio itself is C compiled by `cc` at its own
-# optimization level — so the cost is noise. Drop this once the rustup pin moves
-# past the fix. `ci` and `local` inherit this override from `release`.
-[profile.release.package.maudio]
-opt-level = 1
-
 [profile.ci]
 inherits = "release"
 lto = "thin"
@@ -75,9 +61,6 @@ split-debuginfo = "unpacked"
 opt-level = 2
 debug = false
 
-[profile.dev.package.maudio]
-opt-level = 1
-
 [workspace.lints.rust]
 # ──────────────────────────────────────────────────────────────────────────────
 # Rust Lint Levels
@@ -256,14 +239,10 @@ smallvec = { version = "1.15.1", features = [
 # ──────────────────────────────────────────────────────────────────────────────
 xxhash-rust = { version = "0.8", features = ["xxh64"] }
 
-
 # ──────────────────────────────────────────────────────────────────────────────
 # Audio & Realtime Media
 # ──────────────────────────────────────────────────────────────────────────────
 audiopus_sys = { version = "0.2.2", features = ["static"] }
-# Pregenerated bindings (crate default): keeps bindgen/libclang out of the
-# build graph so Bazel actions stay hermetic.
-maudio = "0.1.6"
 opus = "0.3.1"
 webrtc = "0.17.2"
 
@@ -274,12 +253,16 @@ libc = "0.2"
 os_pipe = "1"
 windows-sys = { version = "0.61", features = [
    "Win32_Foundation",
+   "Win32_Media_Audio",
+   "Win32_Media_Multimedia",
+   "Win32_Security",
    "Win32_Storage_FileSystem",
    "Win32_Storage_ProjectedFileSystem",
    "Win32_System_Com",
    "Win32_System_LibraryLoader",
    "Win32_System_IO",
    "Win32_System_Ioctl",
+   "Win32_System_Threading",
 ] }
 winreg = "0.56"