feat(antd-csharp): expose new HealthStatus diagnostic fields

antd-csharp/Antd.Sdk.Tests/UnitTests.cs

@@ -124,13 +124,47 @@ public void Dispose()
     [Fact]
     public async Task HealthAsync_ReturnsOk()
     {
-        _server.RouteOk("GET", "/health", new { status = "ok", network = "testnet" });
+        _server.RouteOk("GET", "/health", new
+        {
+            status = "ok",
+            network = "testnet",
+            version = "0.4.0",
+            evm_network = "local",
+            uptime_seconds = 42,
+            build_commit = "abcdef123456",
+            payment_token_address = "0xtoken",
+            payment_vault_address = "0xvault",
+        });
         _server.Start();
 
         var result = await _client.HealthAsync();
 
         Assert.True(result.Ok);
         Assert.Equal("testnet", result.Network);
+        Assert.Equal("0.4.0", result.Version);
+        Assert.Equal("local", result.EvmNetwork);
+        Assert.Equal(42UL, result.UptimeSeconds);
+        Assert.Equal("abcdef123456", result.BuildCommit);
+        Assert.Equal("0xtoken", result.PaymentTokenAddress);
+        Assert.Equal("0xvault", result.PaymentVaultAddress);
+    }
+
+    [Fact]
+    public async Task HealthAsync_PreV0_4_0Daemon_LeavesDiagnosticsEmpty()
+    {
+        // Older daemons reply with just status + network; the optional DTO
+        // properties default to null, and HealthStatusFromDto fills "" / 0.
+        _server.RouteOk("GET", "/health", new { status = "ok", network = "default" });
+        _server.Start();
+
+        var result = await _client.HealthAsync();
+
+        Assert.True(result.Ok);
+        Assert.Equal("default", result.Network);
+        Assert.Equal("", result.Version);
+        Assert.Equal("", result.EvmNetwork);
+        Assert.Equal(0UL, result.UptimeSeconds);
+        Assert.Equal("", result.BuildCommit);
     }
 
     [Fact]

antd-csharp/Antd.Sdk/AntdGrpcClient.cs

@@ -43,7 +43,7 @@ public async Task<HealthStatus> HealthAsync()
         try
         {
             var resp = await _health.CheckAsync(new HealthCheckRequest());
-            return new HealthStatus(resp.Status == "ok", resp.Network ?? "unknown");
+            return HealthStatusFromResp(resp);
         }
         catch (RpcException ex) when (ex.StatusCode == StatusCode.Unavailable)
         {
@@ -59,6 +59,21 @@ public async Task<HealthStatus> HealthAsync()
         }
     }
 
+    /// <summary>
+    /// Convert a gRPC <see cref="HealthCheckResponse"/> into a typed
+    /// <see cref="HealthStatus"/>.
+    /// </summary>
+    internal static HealthStatus HealthStatusFromResp(HealthCheckResponse resp) =>
+        new(
+            resp.Status == "ok",
+            resp.Network ?? "unknown",
+            resp.Version ?? "",
+            resp.EvmNetwork ?? "",
+            resp.UptimeSeconds,
+            resp.BuildCommit ?? "",
+            resp.PaymentTokenAddress ?? "",
+            resp.PaymentVaultAddress ?? "");
+
     // ── Data ──
 
     public async Task<PutResult> DataPutPublicAsync(byte[] data, string? paymentMode = null)

antd-csharp/Antd.Sdk/AntdRestClient.cs

@@ -81,14 +81,33 @@ public async Task<HealthStatus> HealthAsync()
             if (!resp.IsSuccessStatusCode)
                 return new HealthStatus(false, "unknown");
             var json = await resp.Content.ReadFromJsonAsync<HealthResponseDto>(JsonOpts);
-            return new HealthStatus(json?.Status == "ok", json?.Network ?? "unknown");
+            return HealthStatusFromDto(json);
         }
         catch
         {
             return new HealthStatus(false, "unknown");
         }
     }
 
+    /// <summary>
+    /// Convert a parsed <see cref="HealthResponseDto"/> into a typed
+    /// <see cref="HealthStatus"/>. Diagnostic fields default to empty / 0
+    /// when talking to a pre-0.4.0 daemon that omits them.
+    /// </summary>
+    internal static HealthStatus HealthStatusFromDto(HealthResponseDto? dto)
+    {
+        if (dto is null) return new HealthStatus(false, "unknown");
+        return new HealthStatus(
+            dto.Status == "ok",
+            dto.Network ?? "unknown",
+            dto.Version ?? "",
+            dto.EvmNetwork ?? "",
+            dto.UptimeSeconds ?? 0,
+            dto.BuildCommit ?? "",
+            dto.PaymentTokenAddress ?? "",
+            dto.PaymentVaultAddress ?? "");
+    }
+
     // ── Data ──
 
     public async Task<PutResult> DataPutPublicAsync(byte[] data, string? paymentMode = null)
@@ -258,9 +277,15 @@ private static PrepareUploadResult MapPrepareUpload(PrepareUploadDto resp)
 
     // ── Internal DTOs for JSON deserialization ──
 
-    private sealed record HealthResponseDto(
+    internal sealed record HealthResponseDto(
         [property: JsonPropertyName("status")] string Status,
-        [property: JsonPropertyName("network")] string? Network);
+        [property: JsonPropertyName("network")] string? Network,
+        [property: JsonPropertyName("version")] string? Version = null,
+        [property: JsonPropertyName("evm_network")] string? EvmNetwork = null,
+        [property: JsonPropertyName("uptime_seconds")] ulong? UptimeSeconds = null,
+        [property: JsonPropertyName("build_commit")] string? BuildCommit = null,
+        [property: JsonPropertyName("payment_token_address")] string? PaymentTokenAddress = null,
+        [property: JsonPropertyName("payment_vault_address")] string? PaymentVaultAddress = null);
 
     private sealed record DataPutPublicDto(
         [property: JsonPropertyName("cost")] string Cost,

antd-csharp/Antd.Sdk/Models.cs

@@ -1,7 +1,23 @@
 namespace Antd.Sdk;
 
-/// <summary>Health check result from the antd daemon.</summary>
-public sealed record HealthStatus(bool Ok, string Network);
+/// <summary>
+/// Health check result from the antd daemon.
+///
+/// The diagnostic fields (<see cref="Version"/>, <see cref="EvmNetwork"/>,
+/// <see cref="UptimeSeconds"/>, <see cref="BuildCommit"/>,
+/// <see cref="PaymentTokenAddress"/>, <see cref="PaymentVaultAddress"/>) were
+/// added in antd 0.4.0. They default to <c>""</c> / <c>0</c> so the record
+/// stays constructable from a pre-0.4.0 daemon's response.
+/// </summary>
+public sealed record HealthStatus(
+    bool Ok,
+    string Network,
+    string Version = "",
+    string EvmNetwork = "",
+    ulong UptimeSeconds = 0,
+    string BuildCommit = "",
+    string PaymentTokenAddress = "",
+    string PaymentVaultAddress = "");
 
 /// <summary>Result of a put/create operation that stores data on the network.</summary>
 public sealed record PutResult(string Cost, string Address);

antd-csharp/README.md

@@ -69,7 +69,7 @@ All methods are async and return `Task<T>`. The client implements `IDisposable`.
 
 | Method | Returns | Description |
 |--------|---------|-------------|
-| `HealthAsync()` | `HealthStatus` | Check daemon health |
+| `HealthAsync()` | `HealthStatus` | Check daemon health — also reports antd version, EVM network, uptime, build commit, and payment contract addresses (antd ≥ 0.4.0) |
 
 ### Data
 
@@ -104,7 +104,7 @@ All models are sealed records (immutable).
 
 | Model | Fields | Description |
 |-------|--------|-------------|
-| `HealthStatus` | `Ok`, `Network` | Health check result |
+| `HealthStatus` | `Ok`, `Network`, `Version`, `EvmNetwork`, `UptimeSeconds`, `BuildCommit`, `PaymentTokenAddress`, `PaymentVaultAddress` | Health check result (diagnostic fields require antd ≥ 0.4.0) |
 | `PutResult` | `Cost`, `Address` | Write operation result |
 | `FileUploadResult` | `Address`, `StorageCostAtto`, `GasCostWei`, `ChunksStored`, `PaymentModeUsed` | File/dir upload result |