feat(talk): add provider-agnostic config with legacy compatibility

apps/ios/Sources/Voice/TalkModeManager.swift

@@ -16,6 +16,7 @@ import Speech
 final class TalkModeManager: NSObject {
     private typealias SpeechRequest = SFSpeechAudioBufferRecognitionRequest
     private static let defaultModelIdFallback = "eleven_v3"
+    private static let defaultTalkProvider = "elevenlabs"
     private static let redactedConfigSentinel = "__OPENCLAW_REDACTED__"
     var isEnabled: Bool = false
     var isListening: Bool = false
@@ -1885,6 +1886,46 @@ extension TalkModeManager {
         return trimmed
     }
 
+    struct TalkProviderConfigSelection {
+        let provider: String
+        let config: [String: Any]
+        let normalizedPayload: Bool
+    }
+
+    private static func normalizedTalkProviderID(_ raw: String?) -> String? {
+        let trimmed = (raw ?? "").trimmingCharacters(in: .whitespacesAndNewlines).lowercased()
+        return trimmed.isEmpty ? nil : trimmed
+    }
+
+    static func selectTalkProviderConfig(_ talk: [String: Any]?) -> TalkProviderConfigSelection? {
+        guard let talk else { return nil }
+        let rawProvider = talk["provider"] as? String
+        let rawProviders = talk["providers"] as? [String: Any]
+        let hasNormalized = rawProvider != nil || rawProviders != nil
+        if hasNormalized {
+            let providers = rawProviders ?? [:]
+            let normalizedProviders = providers.reduce(into: [String: [String: Any]]()) { acc, entry in
+                guard
+                    let providerID = Self.normalizedTalkProviderID(entry.key),
+                    let config = entry.value as? [String: Any]
+                else { return }
+                acc[providerID] = config
+            }
+            let providerID =
+                Self.normalizedTalkProviderID(rawProvider) ??
+                normalizedProviders.keys.sorted().first ??
+                Self.defaultTalkProvider
+            return TalkProviderConfigSelection(
+                provider: providerID,
+                config: normalizedProviders[providerID] ?? [:],
+                normalizedPayload: true)
+        }
+        return TalkProviderConfigSelection(
+            provider: Self.defaultTalkProvider,
+            config: talk,
+            normalizedPayload: false)
+    }
+
     func reloadConfig() async {
         guard let gateway else { return }
         do {
@@ -1892,8 +1933,12 @@ extension TalkModeManager {
             guard let json = try JSONSerialization.jsonObject(with: res) as? [String: Any] else { return }
             guard let config = json["config"] as? [String: Any] else { return }
             let talk = config["talk"] as? [String: Any]
-            self.defaultVoiceId = (talk?["voiceId"] as? String)?.trimmingCharacters(in: .whitespacesAndNewlines)
-            if let aliases = talk?["voiceAliases"] as? [String: Any] {
+            let selection = Self.selectTalkProviderConfig(talk)
+            let activeProvider = selection?.provider ?? Self.defaultTalkProvider
+            let activeConfig = selection?.config
+            self.defaultVoiceId = (activeConfig?["voiceId"] as? String)?
+                .trimmingCharacters(in: .whitespacesAndNewlines)
+            if let aliases = activeConfig?["voiceAliases"] as? [String: Any] {
                 var resolved: [String: String] = [:]
                 for (key, value) in aliases {
                     guard let id = value as? String else { continue }
@@ -1909,22 +1954,28 @@ extension TalkModeManager {
             if !self.voiceOverrideActive {
                 self.currentVoiceId = self.defaultVoiceId
             }
-            let model = (talk?["modelId"] as? String)?.trimmingCharacters(in: .whitespacesAndNewlines)
+            let model = (activeConfig?["modelId"] as? String)?.trimmingCharacters(in: .whitespacesAndNewlines)
             self.defaultModelId = (model?.isEmpty == false) ? model : Self.defaultModelIdFallback
             if !self.modelOverrideActive {
                 self.currentModelId = self.defaultModelId
             }
-            self.defaultOutputFormat = (talk?["outputFormat"] as? String)?
+            self.defaultOutputFormat = (activeConfig?["outputFormat"] as? String)?
                 .trimmingCharacters(in: .whitespacesAndNewlines)
-            let rawConfigApiKey = (talk?["apiKey"] as? String)?.trimmingCharacters(in: .whitespacesAndNewlines)
+            let rawConfigApiKey = (activeConfig?["apiKey"] as? String)?.trimmingCharacters(in: .whitespacesAndNewlines)
             let configApiKey = Self.normalizedTalkApiKey(rawConfigApiKey)
-            let localApiKey = Self.normalizedTalkApiKey(GatewaySettingsStore.loadTalkElevenLabsApiKey())
+            let localApiKey = Self.normalizedTalkApiKey(
+                GatewaySettingsStore.loadTalkProviderApiKey(provider: activeProvider))
             if rawConfigApiKey == Self.redactedConfigSentinel {
                 self.apiKey = (localApiKey?.isEmpty == false) ? localApiKey : nil
                 GatewayDiagnostics.log("talk config apiKey redacted; using local override if present")
             } else {
                 self.apiKey = (localApiKey?.isEmpty == false) ? localApiKey : configApiKey
             }
+            if activeProvider != Self.defaultTalkProvider {
+                self.apiKey = nil
+                GatewayDiagnostics.log(
+                    "talk provider '\(activeProvider)' not yet supported on iOS; using system voice fallback")
+            }
             self.gatewayTalkDefaultVoiceId = self.defaultVoiceId
             self.gatewayTalkDefaultModelId = self.defaultModelId
             self.gatewayTalkApiKeyConfigured = (self.apiKey?.isEmpty == false)
@@ -1932,6 +1983,9 @@ extension TalkModeManager {
             if let interrupt = talk?["interruptOnSpeech"] as? Bool {
                 self.interruptOnSpeech = interrupt
             }
+            if selection?.normalizedPayload == true {
+                GatewayDiagnostics.log("talk config provider=\(activeProvider)")
+            }
         } catch {
             self.defaultModelId = Self.defaultModelIdFallback
             if !self.modelOverrideActive {