feat(proxy-engine): add on-demand TTS caching for voicemail and IVR prompts

rust/crates/proxy-engine/src/config.rs

@@ -159,6 +159,10 @@ pub struct AppConfig {
     pub providers: Vec<ProviderConfig>,
     pub devices: Vec<DeviceConfig>,
     pub routing: RoutingConfig,
+    #[serde(default)]
+    pub voiceboxes: Vec<VoiceboxConfig>,
+    #[serde(default)]
+    pub ivr: Option<IvrConfig>,
 }
 
 #[derive(Debug, Clone, Deserialize)]
@@ -166,6 +170,59 @@ pub struct RoutingConfig {
     pub routes: Vec<Route>,
 }
 
+// ---------------------------------------------------------------------------
+// Voicebox config
+// ---------------------------------------------------------------------------
+
+#[allow(dead_code)]
+#[derive(Debug, Clone, Deserialize)]
+pub struct VoiceboxConfig {
+    pub id: String,
+    #[serde(default)]
+    pub enabled: bool,
+    #[serde(rename = "greetingText")]
+    pub greeting_text: Option<String>,
+    #[serde(rename = "greetingVoice")]
+    pub greeting_voice: Option<String>,
+    #[serde(rename = "greetingWavPath")]
+    pub greeting_wav_path: Option<String>,
+    #[serde(rename = "maxRecordingSec")]
+    pub max_recording_sec: Option<u32>,
+}
+
+// ---------------------------------------------------------------------------
+// IVR config
+// ---------------------------------------------------------------------------
+
+#[allow(dead_code)]
+#[derive(Debug, Clone, Deserialize)]
+pub struct IvrConfig {
+    pub enabled: bool,
+    pub menus: Vec<IvrMenuConfig>,
+    #[serde(rename = "entryMenuId")]
+    pub entry_menu_id: String,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct IvrMenuConfig {
+    pub id: String,
+    #[serde(rename = "promptText")]
+    pub prompt_text: String,
+    #[serde(rename = "promptVoice")]
+    pub prompt_voice: Option<String>,
+    pub entries: Vec<IvrMenuEntry>,
+    #[serde(rename = "timeoutSec")]
+    pub timeout_sec: Option<u32>,
+}
+
+#[allow(dead_code)]
+#[derive(Debug, Clone, Deserialize)]
+pub struct IvrMenuEntry {
+    pub digit: String,
+    pub action: String,
+    pub target: Option<String>,
+}
+
 // ---------------------------------------------------------------------------
 // Pattern matching (ported from ts/config.ts)
 // ---------------------------------------------------------------------------