[refactor](trx-protocol): move transport dto out of core

Phase 5: relocate ClientCommand/Envelope/Response into trx-protocol and update call sites so trx-core remains domain-focused.

Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stanislaw Grams <stanislawgrams@gmail.com>

src/trx-core/src/client.rs

@@ -1,49 +0,0 @@
-// SPDX-FileCopyrightText: 2025 Stanislaw Grams <stanislawgrams@gmail.com>
-//
-// SPDX-License-Identifier: BSD-2-Clause
-
-use serde::{Deserialize, Serialize};
-
-use crate::rig::state::RigSnapshot;
-
-/// Command received from network clients (JSON).
-#[derive(Debug, Serialize, Deserialize)]
-#[serde(tag = "cmd", rename_all = "snake_case")]
-pub enum ClientCommand {
-    GetState,
-    SetFreq { freq_hz: u64 },
-    SetMode { mode: String },
-    SetPtt { ptt: bool },
-    PowerOn,
-    PowerOff,
-    ToggleVfo,
-    Lock,
-    Unlock,
-    GetTxLimit,
-    SetTxLimit { limit: u8 },
-    SetAprsDecodeEnabled { enabled: bool },
-    SetCwDecodeEnabled { enabled: bool },
-    SetCwAuto { enabled: bool },
-    SetCwWpm { wpm: u32 },
-    SetCwToneHz { tone_hz: u32 },
-    SetFt8DecodeEnabled { enabled: bool },
-    ResetAprsDecoder,
-    ResetCwDecoder,
-    ResetFt8Decoder,
-}
-
-/// Envelope for client commands with optional authentication token.
-#[derive(Debug, Serialize, Deserialize)]
-pub struct ClientEnvelope {
-    pub token: Option<String>,
-    #[serde(flatten)]
-    pub cmd: ClientCommand,
-}
-
-/// Response sent to network clients over TCP.
-#[derive(Debug, Serialize, Deserialize)]
-pub struct ClientResponse {
-    pub success: bool,
-    pub state: Option<RigSnapshot>,
-    pub error: Option<String>,
-}

src/trx-core/src/lib.rs

@@ -3,7 +3,6 @@
 // SPDX-License-Identifier: BSD-2-Clause
 
 pub mod audio;
-pub mod client;
 pub mod decode;
 pub mod math;
 pub mod radio;
@@ -11,7 +10,6 @@ pub mod rig;
 
 pub type DynResult<T> = Result<T, Box<dyn std::error::Error + Send + Sync>>;
 
-pub use client::{ClientCommand, ClientResponse};
 pub use rig::command::RigCommand;
 pub use rig::request::RigRequest;
 pub use rig::response::{RigError, RigResult};