Fixed self-hosted provider API key handling (#811)

app/MindWork AI Studio/Provider/AlibabaCloud/ProviderAlibabaCloud.cs

@@ -13,7 +13,7 @@ public sealed class ProviderAlibabaCloud() : BaseProvider(LLMProviders.ALIBABA_C
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.ALIBABA_CLOUD.ToName();
+    public override string Id => LLMProviders.ALIBABA_CLOUD.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "AlibabaCloud";

app/MindWork AI Studio/Provider/Anthropic/ProviderAnthropic.cs

@@ -15,7 +15,7 @@ public sealed class ProviderAnthropic() : BaseProvider(LLMProviders.ANTHROPIC, n
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.ANTHROPIC.ToName();
+    public override string Id => LLMProviders.ANTHROPIC.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "Anthropic";

app/MindWork AI Studio/Provider/DeepSeek/ProviderDeepSeek.cs

@@ -13,7 +13,7 @@ public sealed class ProviderDeepSeek() : BaseProvider(LLMProviders.DEEP_SEEK, ne
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.DEEP_SEEK.ToName();
+    public override string Id => LLMProviders.DEEP_SEEK.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "DeepSeek";

app/MindWork AI Studio/Provider/Fireworks/ProviderFireworks.cs

@@ -13,7 +13,7 @@ public class ProviderFireworks() : BaseProvider(LLMProviders.FIREWORKS, new Uri(
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.FIREWORKS.ToName();
+    public override string Id => LLMProviders.FIREWORKS.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "Fireworks.ai";

app/MindWork AI Studio/Provider/GWDG/ProviderGWDG.cs

@@ -13,7 +13,7 @@ public sealed class ProviderGWDG() : BaseProvider(LLMProviders.GWDG, new Uri("ht
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.GWDG.ToName();
+    public override string Id => LLMProviders.GWDG.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "GWDG SAIA";

app/MindWork AI Studio/Provider/Google/ProviderGoogle.cs

@@ -15,7 +15,7 @@ public class ProviderGoogle() : BaseProvider(LLMProviders.GOOGLE, new Uri("https
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.GOOGLE.ToName();
+    public override string Id => LLMProviders.GOOGLE.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "Google Gemini";

app/MindWork AI Studio/Provider/Groq/ProviderGroq.cs

@@ -13,7 +13,7 @@ public class ProviderGroq() : BaseProvider(LLMProviders.GROQ, new Uri("https://a
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.GROQ.ToName();
+    public override string Id => LLMProviders.GROQ.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "Groq";

app/MindWork AI Studio/Provider/Helmholtz/ProviderHelmholtz.cs

@@ -15,7 +15,7 @@ public sealed class ProviderHelmholtz() : BaseProvider(LLMProviders.HELMHOLTZ, n
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.HELMHOLTZ.ToName();
+    public override string Id => LLMProviders.HELMHOLTZ.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "Helmholtz Blablador";

app/MindWork AI Studio/Provider/HuggingFace/ProviderHuggingFace.cs

@@ -18,7 +18,7 @@ public sealed class ProviderHuggingFace : BaseProvider
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.HUGGINGFACE.ToName();
+    public override string Id => LLMProviders.HUGGINGFACE.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "HuggingFace";

app/MindWork AI Studio/Provider/LLMProvidersExtensions.cs

@@ -29,6 +29,10 @@ public static class LLMProvidersExtensions
     /// <summary>
     /// Returns the human-readable name of the provider.
     /// </summary>
+    /// <remarks>
+    /// This value is UI text and may be localized. Do not use it for persisted IDs, secret namespaces,
+    /// or other stable identifiers.
+    /// </remarks>
     /// <param name="llmProvider">The provider.</param>
     /// <returns>The human-readable name of the provider.</returns>
     public static string ToName(this LLMProviders llmProvider) => llmProvider switch
@@ -56,6 +60,41 @@ public static class LLMProvidersExtensions
         
         _ => TB("Unknown"),
     };
+
+    /// <summary>
+    /// Returns the stable secret namespace for the provider.
+    /// </summary>
+    /// <remarks>
+    /// These values are used for OS keyring namespaces. They must never be localized or changed without
+    /// an explicit migration for existing API keys.
+    /// </remarks>
+    /// <param name="llmProvider">The provider.</param>
+    /// <returns>The stable secret namespace for the provider.</returns>
+    public static string ToSecretId(this LLMProviders llmProvider) => llmProvider switch
+    {
+        LLMProviders.NONE => "No provider selected",
+
+        LLMProviders.OPEN_AI => "OpenAI",
+        LLMProviders.ANTHROPIC => "Anthropic",
+        LLMProviders.MISTRAL => "Mistral",
+        LLMProviders.GOOGLE => "Google",
+        LLMProviders.X => "xAI",
+        LLMProviders.DEEP_SEEK => "DeepSeek",
+        LLMProviders.ALIBABA_CLOUD => "Alibaba Cloud",
+        LLMProviders.PERPLEXITY => "Perplexity",
+        LLMProviders.OPEN_ROUTER => "OpenRouter",
+
+        LLMProviders.GROQ => "Groq",
+        LLMProviders.FIREWORKS => "Fireworks.ai",
+        LLMProviders.HUGGINGFACE => "Hugging Face",
+
+        LLMProviders.SELF_HOSTED => "Self-hosted",
+
+        LLMProviders.HELMHOLTZ => "Helmholtz Blablador",
+        LLMProviders.GWDG => "GWDG SAIA",
+
+        _ => "Unknown",
+    };
     
     /// <summary>
     /// Get a provider's confidence.

app/MindWork AI Studio/Provider/Mistral/ProviderMistral.cs

@@ -13,7 +13,7 @@ public sealed class ProviderMistral() : BaseProvider(LLMProviders.MISTRAL, new U
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.MISTRAL.ToName();
+    public override string Id => LLMProviders.MISTRAL.ToSecretId();
     
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "Mistral";

app/MindWork AI Studio/Provider/OpenAI/ProviderOpenAI.cs

@@ -22,7 +22,7 @@ public sealed class ProviderOpenAI() : BaseProvider(LLMProviders.OPEN_AI, new Ur
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.OPEN_AI.ToName();
+    public override string Id => LLMProviders.OPEN_AI.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "OpenAI";

app/MindWork AI Studio/Provider/OpenRouter/ProviderOpenRouter.cs

@@ -17,7 +17,7 @@ public sealed class ProviderOpenRouter() : BaseProvider(LLMProviders.OPEN_ROUTER
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.OPEN_ROUTER.ToName();
+    public override string Id => LLMProviders.OPEN_ROUTER.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "OpenRouter";

app/MindWork AI Studio/Provider/Perplexity/ProviderPerplexity.cs

@@ -22,7 +22,7 @@ public sealed class ProviderPerplexity() : BaseProvider(LLMProviders.PERPLEXITY,
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.PERPLEXITY.ToName();
+    public override string Id => LLMProviders.PERPLEXITY.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "Perplexity";

app/MindWork AI Studio/Provider/SelfHosted/ProviderSelfHosted.cs

@@ -18,7 +18,7 @@ public sealed class ProviderSelfHosted(Host host, string hostname) : BaseProvide
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.SELF_HOSTED.ToName();
+    public override string Id => LLMProviders.SELF_HOSTED.ToSecretId();
     
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "Self-hosted";

app/MindWork AI Studio/Provider/X/ProviderX.cs

@@ -13,7 +13,7 @@ public sealed class ProviderX() : BaseProvider(LLMProviders.X, new Uri("https://
     #region Implementation of IProvider
 
     /// <inheritdoc />
-    public override string Id => LLMProviders.X.ToName();
+    public override string Id => LLMProviders.X.ToSecretId();
 
     /// <inheritdoc />
     public override string InstanceName { get; set; } = "xAI";