feat: harden Flow cold-start/force-quit and polish macOS dictation UX

Fix cold-start overlay recursion that overflowed the main-thread stack when
recording began while the ready overlay was still up; also remove temporary
on-screen Flow DEBUG panels after the orange-mic investigation, and land the
macOS overlay/catalog/layout polish plus related Flow recovery hardening.

OSGKeyboardShared/Services/AppGroupStore.swift

@@ -53,6 +53,10 @@ public struct AppGroupStore: @unchecked Sendable {
     public var baseURL: String { configuration.baseURL }
     public var apiKey: String { configuration.apiKey }
     public var model: String { configuration.model }
+    public var asrProviderId: String { configuration.asrProviderId }
+    public var asrBaseURL: String { configuration.resolvedASRBaseURL }
+    public var asrApiKey: String { configuration.asrApiKey }
+    public var asrModel: String { configuration.resolvedASRModel }
     public var modeId: String { configuration.modeId }
     public var localeId: String { configuration.localeId }
     public var engineMode: String { configuration.engineMode }
@@ -91,6 +95,12 @@ public struct AppGroupStore: @unchecked Sendable {
                 config.baseURL = openAI.defaultBaseURL
                 config.model = openAI.defaultModel
             }
+            if mode == "cloud", config.asrProviderId == "deepseek" {
+                let openAI = LLMProvider.provider(id: "openai")
+                config.asrProviderId = openAI.id
+                config.asrBaseURL = openAI.defaultBaseURL
+                config.asrModel = CloudASRModelCatalog.defaultModel(for: openAI.id)
+            }
         }
         AppGroupConfigDarwin.postConfigChanged()
     }