feat: promote linux native audio path

crates/chanora_protocol/Cargo.toml

@@ -13,6 +13,7 @@ publish.workspace = true
 thiserror.workspace = true
 tracing.workspace = true
 serde.workspace = true
+base64 = "0.22"
 chanora_resolver = { path = "../chanora_resolver" }
 
 # tsclientlib is git-only and not on crates.io. The "audio" feature
@@ -31,12 +32,14 @@ tokio = { version = "1", features = ["macros", "rt-multi-thread", "time", "sync"
 futures = "0.3"
 async-trait = "0.1"
 
-[target.'cfg(not(target_os = "android"))'.dependencies]
-# Desktop/iOS: native TLS maps to the platform TLS backend (Security.framework
-# on Apple, SChannel on Windows, system OpenSSL on Linux/BSD).
+[target.'cfg(any(target_os = "ios", target_os = "macos", target_os = "windows"))'.dependencies]
+# Apple + Windows keep the platform TLS backend (Security.framework /
+# SChannel). iOS in particular avoids the rustls/aws-lc path here.
 reqwest = { version = "0.13", default-features = false, features = ["charset", "http2", "native-tls"] }
 
-[target.'cfg(target_os = "android")'.dependencies]
-# Android cross-builds should not pull OpenSSL. Use rustls here while keeping
-# native-tls for Apple targets where aws-lc/rustls is problematic for iOS.
+[target.'cfg(any(target_os = "android", target_os = "linux"))'.dependencies]
+# Android + Linux avoid a system OpenSSL dependency and use rustls instead.
+# This keeps Linux CI / dev hosts buildable without `openssl-devel`, while
+# preserving the native-tls path for Apple targets where rustls/aws-lc has
+# been problematic.
 reqwest = { version = "0.13", default-features = false, features = ["charset", "http2", "rustls"] }