feat: add secure WP7-02 external executor

scripts/lib/wp7-02-controlled-executor.mjs

@@ -0,0 +1,254 @@
+import { createHash } from "node:crypto";
+
+import { WP7_02_MODEL_IDS, buildModelContractPlan } from "./wp7-02-external-contract.mjs";
+
+export const WP7_02_CONTROLLED_REAL_LIMIT = 120;
+
+const ratios = ["3:4", "1:1", "4:3", "9:16"];
+const openAiSizes = Object.freeze({
+  "3:4": "1024x1536",
+  "1:1": "1024x1024",
+  "4:3": "1536x1024",
+  "9:16": "1024x1536",
+});
+const allowedMimeTypes = new Set(["image/jpeg", "image/png", "image/webp"]);
+const forbiddenEvidenceKeys = /(?:^|_)(?:absolute_path|authorization|body|credential|credential_value|image|password|path|prompt|raw|raw_provider_payload|raw_prompt|secret|token)(?:_|$)/i;
+
+function sha256(value) {
+  return createHash("sha256").update(value).digest("hex").toUpperCase();
+}
+
+function assertModelConfig(modelConfig) {
+  if (!modelConfig || typeof modelConfig !== "object" || !WP7_02_MODEL_IDS.includes(modelConfig.model_id)) {
+    throw new Error("WP7_02_MODEL_CONFIG_INVALID");
+  }
+  if (!Number.isSafeInteger(modelConfig.config_version) || modelConfig.config_version <= 0) {
+    throw new Error("WP7_02_MODEL_CONFIG_VERSION_INVALID");
+  }
+  const profile = modelConfig.route_profile;
+  if (!profile || typeof profile !== "object" || typeof profile.endpoint !== "string"
+    || !profile.endpoint.startsWith("https://oneapi.intelligrow.cn/")
+    || !["gemini-native-v1beta", "openai-images-v1"].includes(profile.protocol_version)) {
+    throw new Error("WP7_02_ROUTE_PROFILE_INVALID");
+  }
+  return modelConfig;
+}
+
+export function buildControlledExecutionPlan(modelConfig) {
+  const config = assertModelConfig(modelConfig);
+  const contractPlan = buildModelContractPlan(config.model_id);
+  const realScenarios = [
+    ...ratios.map((ratio) => ({ input: "pure_text", ratio, source: "real_gateway" })),
+    { input: "reference_image", ratio: "1:1", source: "real_gateway" },
+  ];
+  return {
+    config_version: config.config_version,
+    error_scenarios: contractPlan.error_categories.map((name) => ({
+      expected: contractPlan.error_expectations[name], name, source: "deterministic_local",
+    })),
+    execution_modes: [
+      { mode: "sync", source: "real_gateway" },
+      { mode: "async", source: "deterministic_local" },
+      { mode: "poll", source: "deterministic_local" },
+    ],
+    model_id: config.model_id,
+    planned_real_calls: realScenarios.length,
+    quota_impact: "authorized_test_key_up_to_120_requests",
+    real_scenarios: realScenarios,
+    response_checks: ["single_image", "mime", "dimensions", "sanitized_usage", "evidence_hash"],
+    state_scenarios: contractPlan.state_checks.map((name) => ({ name, source: "deterministic_local" })),
+  };
+}
+
+export function buildProviderRequest({ modelConfig, prompt, ratio, reference }) {
+  const config = assertModelConfig(modelConfig);
+  if (typeof prompt !== "string" || !prompt.trim() || !ratios.includes(ratio)) throw new Error("WP7_02_REQUEST_FIXTURE_INVALID");
+  if (reference && (!Buffer.isBuffer(reference.bytes) || reference.bytes.length === 0 || !allowedMimeTypes.has(reference.mime_type))) {
+    throw new Error("WP7_02_REFERENCE_FIXTURE_INVALID");
+  }
+  const headers = { "content-type": "application/json" };
+  if (config.route_profile.protocol_version === "gemini-native-v1beta") {
+    const parts = [{ text: prompt }];
+    if (reference) parts.push({ inlineData: { data: reference.bytes.toString("base64"), mimeType: reference.mime_type } });
+    return {
+      body: {
+        contents: [{ parts, role: "user" }],
+        generationConfig: { imageConfig: { aspectRatio: ratio }, responseModalities: ["TEXT", "IMAGE"] },
+      },
+      headers,
+      method: "POST",
+      url: config.route_profile.endpoint,
+    };
+  }
+  const body = {
+    model: config.model_id,
+    prompt,
+    response_format: "b64_json",
+    size: openAiSizes[ratio],
+  };
+  if (reference) body.image = `data:${reference.mime_type};base64,${reference.bytes.toString("base64")}`;
+  return { body, headers, method: "POST", url: config.route_profile.endpoint };
+}
+
+function pngDimensions(bytes) {
+  const signature = Buffer.from([137, 80, 78, 71, 13, 10, 26, 10]);
+  if (bytes.length < 24 || !bytes.subarray(0, 8).equals(signature)) return undefined;
+  return { height: bytes.readUInt32BE(20), width: bytes.readUInt32BE(16) };
+}
+
+function jpegDimensions(bytes) {
+  if (bytes.length < 4 || bytes[0] !== 0xff || bytes[1] !== 0xd8) return undefined;
+  let offset = 2;
+  while (offset + 9 < bytes.length) {
+    if (bytes[offset] !== 0xff) { offset += 1; continue; }
+    const marker = bytes[offset + 1];
+    if ([0xc0, 0xc1, 0xc2, 0xc3, 0xc5, 0xc6, 0xc7, 0xc9, 0xca, 0xcb, 0xcd, 0xce, 0xcf].includes(marker)) {
+      return { height: bytes.readUInt16BE(offset + 5), width: bytes.readUInt16BE(offset + 7) };
+    }
+    if (marker === 0xd8 || marker === 0xd9 || (marker >= 0xd0 && marker <= 0xd7)) { offset += 2; continue; }
+    const length = bytes.readUInt16BE(offset + 2);
+    if (length < 2) return undefined;
+    offset += length + 2;
+  }
+  return undefined;
+}
+
+function webpDimensions(bytes) {
+  if (bytes.length < 30 || bytes.toString("ascii", 0, 4) !== "RIFF" || bytes.toString("ascii", 8, 12) !== "WEBP") return undefined;
+  const kind = bytes.toString("ascii", 12, 16);
+  if (kind === "VP8X") {
+    return {
+      height: 1 + bytes.readUIntLE(27, 3),
+      width: 1 + bytes.readUIntLE(24, 3),
+    };
+  }
+  if (kind === "VP8 " && bytes.length >= 30) return { height: bytes.readUInt16LE(28) & 0x3fff, width: bytes.readUInt16LE(26) & 0x3fff };
+  if (kind === "VP8L" && bytes.length >= 25) {
+    const bits = bytes.readUInt32LE(21);
+    return { height: 1 + ((bits >> 14) & 0x3fff), width: 1 + (bits & 0x3fff) };
+  }
+  return undefined;
+}
+
+function inspectImage(bytes, declaredMime) {
+  const png = pngDimensions(bytes);
+  if (png && declaredMime === "image/png") return { ...png, mime: declaredMime };
+  const jpeg = jpegDimensions(bytes);
+  if (jpeg && declaredMime === "image/jpeg") return { ...jpeg, mime: declaredMime };
+  const webp = webpDimensions(bytes);
+  if (webp && declaredMime === "image/webp") return { ...webp, mime: declaredMime };
+  throw new Error("WP7_02_RESPONSE_MEDIA_INVALID");
+}
+
+function integerOrZero(value) {
+  return Number.isSafeInteger(value) && value >= 0 ? value : 0;
+}
+
+function geminiUsage(response) {
+  const usage = response?.usageMetadata;
+  return {
+    input_units: integerOrZero(usage?.promptTokenCount),
+    output_units: integerOrZero(usage?.candidatesTokenCount),
+    total_units: integerOrZero(usage?.totalTokenCount),
+  };
+}
+
+function openAiUsage(response) {
+  const usage = response?.usage;
+  return {
+    input_units: integerOrZero(usage?.input_tokens ?? usage?.inputTokens),
+    output_units: integerOrZero(usage?.output_tokens ?? usage?.outputTokens),
+    total_units: integerOrZero(usage?.total_tokens ?? usage?.totalTokens),
+  };
+}
+
+export function normalizeProviderResponse(modelConfig, response) {
+  const config = assertModelConfig(modelConfig);
+  let bytes;
+  let mime;
+  let usageSummary;
+  if (config.route_profile.protocol_version === "gemini-native-v1beta") {
+    const parts = response?.candidates?.flatMap((candidate) => candidate?.content?.parts ?? []) ?? [];
+    const images = parts.map((part) => part?.inlineData ?? part?.inline_data).filter((entry) => entry?.data);
+    if (images.length !== 1) throw new Error("WP7_02_RESPONSE_SINGLE_IMAGE_REQUIRED");
+    mime = images[0].mimeType ?? images[0].mime_type;
+    bytes = Buffer.from(images[0].data, "base64");
+    usageSummary = geminiUsage(response);
+  } else {
+    if (!Array.isArray(response?.data) || response.data.length !== 1 || typeof response.data[0]?.b64_json !== "string") {
+      throw new Error("WP7_02_RESPONSE_SINGLE_IMAGE_REQUIRED");
+    }
+    bytes = Buffer.from(response.data[0].b64_json, "base64");
+    mime = "image/png";
+    usageSummary = openAiUsage(response);
+  }
+  const media = inspectImage(bytes, mime);
+  return {
+    bytes,
+    dimensions: { height: media.height, width: media.width },
+    evidence_hash: `sha256:${sha256(bytes)}`,
+    mime: media.mime,
+    usage_summary: usageSummary,
+  };
+}
+
+export function buildSanitizedResponseEvidence(normalized) {
+  const evidence = {
+    dimensions: structuredClone(normalized.dimensions),
+    evidence_hash: normalized.evidence_hash,
+    mime: normalized.mime,
+    usage_summary: structuredClone(normalized.usage_summary),
+  };
+  return validateSanitizedEvidence(evidence);
+}
+
+function inspectEvidenceValue(value, seen = new Set()) {
+  if (value && typeof value === "object") {
+    if (seen.has(value)) throw new Error("WP7_02_EVIDENCE_CYCLE_FORBIDDEN");
+    seen.add(value);
+    for (const [key, entry] of Object.entries(value)) {
+      if (key === "verified") throw new Error("WP7_02_SHARED_VERIFIED_FORBIDDEN");
+      if (forbiddenEvidenceKeys.test(key)) throw new Error("WP7_02_SENSITIVE_EVIDENCE_FORBIDDEN");
+      inspectEvidenceValue(entry, seen);
+    }
+    seen.delete(value);
+  } else if (typeof value === "string" && /[A-Za-z]:\\Users\\/i.test(value)) {
+    throw new Error("WP7_02_SENSITIVE_EVIDENCE_FORBIDDEN");
+  }
+}
+
+export function validateSanitizedEvidence(evidence) {
+  inspectEvidenceValue(evidence);
+  return evidence;
+}
+
+export async function executeProviderRequest({ fetchImpl = fetch, modelConfig, prompt, ratio, reference, token, timeoutMs = 180_000 }) {
+  if (typeof token !== "string" || token.length < 8) throw new Error("WP7_02_CREDENTIAL_INVALID");
+  const request = buildProviderRequest({ modelConfig, prompt, ratio, reference });
+  const controller = new AbortController();
+  const timeout = setTimeout(() => controller.abort(), timeoutMs);
+  const startedAt = performance.now();
+  try {
+    const response = await fetchImpl(request.url, {
+      body: JSON.stringify(request.body),
+      headers: { ...request.headers, authorization: `Bearer ${token}` },
+      method: request.method,
+      signal: controller.signal,
+    });
+    const durationMs = Math.round(performance.now() - startedAt);
+    if (!response.ok) throw new Error(`WP7_02_UPSTREAM_HTTP_${response.status}`);
+    const normalized = normalizeProviderResponse(modelConfig, await response.json());
+    return {
+      duration_ms: durationMs,
+      http_status: response.status,
+      normalized,
+      response_evidence: buildSanitizedResponseEvidence(normalized),
+    };
+  } catch (error) {
+    if (error?.name === "AbortError") throw new Error("WP7_02_UPSTREAM_TIMEOUT");
+    if (error instanceof Error && /^WP7_02_[A-Z0-9_]+$/.test(error.message)) throw error;
+    throw new Error("WP7_02_UPSTREAM_FAILED");
+  } finally {
+    clearTimeout(timeout);
+  }
+}

supervisor/Dada.Supervisor.Tests/Program.cs

@@ -16,6 +16,12 @@ internal static class Program
             return await RunCredentialChildAsync();
         }
 
+        if (args.FirstOrDefault() == "--credential-echo")
+        {
+            Console.Write(await Console.In.ReadToEndAsync());
+            return 0;
+        }
+
         if (args.FirstOrDefault() == "--instance-probe")
         {
             using var instance = await SingleInstanceCoordinator.TryAcquireAsync(args[1], args[2]);
@@ -120,6 +126,28 @@ internal static class Program
 
         var workerProbe = await LaunchCredentialProbeAsync(ChildRole.Worker, store);
         EqualSequence(new[] { CredentialCatalog.WorkerAiGateway }, workerProbe.Names, "Worker credential scope");
+        var leakProbe = await CredentialProcessLauncher.RunToCompletionAsync(
+            new ProcessStartInfo(Environment.ProcessPath!, "--credential-echo"), ChildRole.Worker, store);
+        True(leakProbe.SensitiveOutputDetected, "credential echo must be detected");
+        Equal(string.Empty, leakProbe.StandardOutput, "credential echo output discarded");
+        Equal(string.Empty, leakProbe.StandardError, "credential echo error discarded");
+
+        var externalArguments = new[]
+        {
+            "--service", "ai-gateway-service-id",
+            "--model", "gpt-image-2",
+            "--run-id", "wp7-02-supervisor-probe",
+            "--candidate-record", "candidate.json",
+            "--config-manifest", "config.json",
+            "--evidence-dir", "evidence",
+            "--max-real-calls", "120",
+            "--confirm-controlled-real",
+            "--execute-controlled-real",
+        };
+        EqualSequence(externalArguments, ControlledExternalValidationLauncher.ValidateArguments(externalArguments), "controlled external argument allowlist");
+        Throws<ArgumentException>(
+            () => ControlledExternalValidationLauncher.ValidateArguments(externalArguments.Where(value => value != "--confirm-controlled-real").ToArray()),
+            "controlled external confirmation required");
 
         store.Delete(CredentialCatalog.WorkerAiGateway);
         await ThrowsAsync<MissingCredentialException>(
@@ -166,15 +194,10 @@ internal static class Program
 
     private static async Task<CredentialProbe> LaunchCredentialProbeAsync(ChildRole role, ICredentialStore store)
     {
-        var startInfo = new ProcessStartInfo(Environment.ProcessPath!, "--credential-child")
+        var result = await CredentialProcessLauncher.RunToCompletionAsync(new ProcessStartInfo(Environment.ProcessPath!, "--credential-child"), role, store);
-        {
+        Equal(0, result.ExitCode, "credential child exit code");
-            RedirectStandardOutput = true,
+        False(result.SensitiveOutputDetected, "credential child output contains injected value");
-        };
+        return JsonSerializer.Deserialize<CredentialProbe>(result.StandardOutput, new JsonSerializerOptions { PropertyNameCaseInsensitive = true })
-        using var process = await CredentialProcessLauncher.StartAsync(startInfo, role, store);
-        var output = await process.StandardOutput.ReadToEndAsync();
-        await process.WaitForExitAsync();
-        Equal(0, process.ExitCode, "credential child exit code");
-        return JsonSerializer.Deserialize<CredentialProbe>(output, new JsonSerializerOptions { PropertyNameCaseInsensitive = true })
             ?? throw new InvalidOperationException("Credential child returned invalid JSON.");
     }
 
@@ -355,6 +378,19 @@ internal static class Program
         throw new InvalidOperationException(message);
     }
 
+    private static void Throws<TException>(Action action, string message) where TException : Exception
+    {
+        try
+        {
+            action();
+        }
+        catch (TException)
+        {
+            return;
+        }
+        throw new InvalidOperationException(message);
+    }
+
     private sealed record CredentialProbe(string[] Names, bool EnvironmentContainsMarker, bool ArgumentsContainMarker);
 
     private sealed class TestCredentialStore : ICredentialStore

supervisor/Dada.Supervisor/ControlledExternalValidationLauncher.cs

@@ -0,0 +1,138 @@
+using System.Diagnostics;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+
+namespace Dada.Supervisor;
+
+internal static partial class ControlledExternalValidationLauncher
+{
+    private static readonly HashSet<string> AllowedModels =
+    [
+        "gemini-3.1-flash-image-preview",
+        "gemini-3-pro-image-preview",
+        "gpt-image-2",
+    ];
+
+    private static readonly HashSet<string> ValueOptions =
+    [
+        "--candidate-record",
+        "--config-manifest",
+        "--evidence-dir",
+        "--max-real-calls",
+        "--model",
+        "--run-id",
+        "--service",
+    ];
+
+    private static readonly HashSet<string> SwitchOptions =
+    [
+        "--confirm-controlled-real",
+        "--execute-controlled-real",
+    ];
+
+    internal static async Task<int> RunAsync(string[] args, ICredentialStore credentials, CancellationToken cancellationToken = default)
+    {
+        var validated = ValidateArguments(args);
+        var script = Path.GetFullPath(Path.Combine(Environment.CurrentDirectory, "scripts", "validate-external.mjs"));
+        if (!File.Exists(script)) throw new InvalidOperationException("external_validator_not_found");
+        var startInfo = new ProcessStartInfo("node") { WorkingDirectory = Environment.CurrentDirectory };
+        startInfo.ArgumentList.Add(script);
+        foreach (var value in validated) startInfo.ArgumentList.Add(value);
+        startInfo.ArgumentList.Add("--credential-stdin");
+
+        var result = await CredentialProcessLauncher.RunToCompletionAsync(startInfo, ChildRole.Worker, credentials, cancellationToken);
+        if (result.SensitiveOutputDetected || !TrySelectSanitizedJson(result, out var output, out var useError))
+        {
+            Console.Error.WriteLine("{\"code\":\"external_validator_output_invalid\",\"real_calls\":0,\"status\":\"failed\"}");
+            return 1;
+        }
+        if (useError) Console.Error.WriteLine(output); else Console.WriteLine(output);
+        return result.ExitCode;
+    }
+
+    internal static string[] ValidateArguments(string[] args)
+    {
+        var values = new Dictionary<string, string>(StringComparer.Ordinal);
+        var switches = new HashSet<string>(StringComparer.Ordinal);
+        for (var index = 0; index < args.Length; index++)
+        {
+            var option = args[index];
+            if (SwitchOptions.Contains(option))
+            {
+                if (!switches.Add(option)) throw new ArgumentException("external_validator_argument_duplicate");
+                continue;
+            }
+            if (!ValueOptions.Contains(option) || index + 1 >= args.Length || !values.TryAdd(option, args[++index]))
+            {
+                throw new ArgumentException("external_validator_argument_invalid");
+            }
+        }
+        if (values.GetValueOrDefault("--service") != "ai-gateway-service-id"
+            || !AllowedModels.Contains(values.GetValueOrDefault("--model") ?? string.Empty)
+            || !SafeRunId().IsMatch(values.GetValueOrDefault("--run-id") ?? string.Empty)
+            || values.GetValueOrDefault("--max-real-calls") != "120"
+            || !values.ContainsKey("--candidate-record")
+            || !values.ContainsKey("--config-manifest")
+            || !values.ContainsKey("--evidence-dir")
+            || !switches.SetEquals(SwitchOptions))
+        {
+            throw new ArgumentException("external_validator_argument_invalid");
+        }
+        if (values.Values.Any(value => value.Length == 0 || value.IndexOfAny(['\r', '\n', '\0']) >= 0))
+        {
+            throw new ArgumentException("external_validator_argument_invalid");
+        }
+        return args.ToArray();
+    }
+
+    private static bool TrySelectSanitizedJson(CredentialProcessResult result, out string output, out bool useError)
+    {
+        var stdout = result.StandardOutput.Trim();
+        var stderr = result.StandardError.Trim();
+        useError = stdout.Length == 0;
+        output = useError ? stderr : stdout;
+        if (output.Length == 0 || (stdout.Length > 0 && stderr.Length > 0)) return false;
+        try
+        {
+            using var document = JsonDocument.Parse(output);
+            return IsSanitized(document.RootElement);
+        }
+        catch (JsonException)
+        {
+            return false;
+        }
+    }
+
+    private static bool IsSanitized(JsonElement element)
+    {
+        if (element.ValueKind == JsonValueKind.Object)
+        {
+            foreach (var property in element.EnumerateObject())
+            {
+                if (ForbiddenKey().IsMatch(property.Name) || property.NameEquals("verified") || !IsSanitized(property.Value)) return false;
+            }
+        }
+        else if (element.ValueKind == JsonValueKind.Array)
+        {
+            foreach (var item in element.EnumerateArray()) if (!IsSanitized(item)) return false;
+        }
+        else if (element.ValueKind == JsonValueKind.String)
+        {
+            var value = element.GetString() ?? string.Empty;
+            if (WindowsUserPath().IsMatch(value) || BearerValue().IsMatch(value)) return false;
+        }
+        return true;
+    }
+
+    [GeneratedRegex("^[A-Za-z0-9][A-Za-z0-9._-]{0,119}$", RegexOptions.CultureInvariant)]
+    private static partial Regex SafeRunId();
+
+    [GeneratedRegex("(?:^|_)(?:absolute_path|authorization|body|credential|image|password|path|prompt|raw|secret|token)(?:_|$)", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant)]
+    private static partial Regex ForbiddenKey();
+
+    [GeneratedRegex("[A-Za-z]:\\\\Users\\\\", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant)]
+    private static partial Regex WindowsUserPath();
+
+    [GeneratedRegex("(?:Bearer\\s+|\\bsk-[A-Za-z0-9_-]{8,})", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant)]
+    private static partial Regex BearerValue();
+}

supervisor/Dada.Supervisor/Credentials.cs

@@ -37,8 +37,58 @@ internal interface ICredentialStore
 internal sealed class MissingCredentialException(string target)
     : InvalidOperationException($"Required credential is not configured: {target}");
 
+internal sealed record CredentialProcessResult(int ExitCode, string StandardOutput, string StandardError, bool SensitiveOutputDetected);
+
 internal static class CredentialProcessLauncher
 {
+    internal static async Task<CredentialProcessResult> RunToCompletionAsync(
+        ProcessStartInfo startInfo,
+        ChildRole role,
+        ICredentialStore store,
+        CancellationToken cancellationToken = default)
+    {
+        var credentials = new Dictionary<string, string>(StringComparer.Ordinal);
+        foreach (var target in CredentialCatalog.RequiredFor(role))
+        {
+            credentials[target] = store.Read(target) ?? throw new MissingCredentialException(target);
+        }
+
+        startInfo.UseShellExecute = false;
+        startInfo.CreateNoWindow = true;
+        startInfo.RedirectStandardInput = true;
+        startInfo.RedirectStandardOutput = true;
+        startInfo.RedirectStandardError = true;
+        using var process = Process.Start(startInfo) ?? throw new InvalidOperationException("Unable to start credential child process.");
+        var outputTask = process.StandardOutput.ReadToEndAsync(cancellationToken);
+        var errorTask = process.StandardError.ReadToEndAsync(cancellationToken);
+        var payload = JsonSerializer.SerializeToUtf8Bytes(credentials);
+        try
+        {
+            await process.StandardInput.BaseStream.WriteAsync(payload, cancellationToken);
+            await process.StandardInput.BaseStream.FlushAsync(cancellationToken);
+            process.StandardInput.Close();
+            await process.WaitForExitAsync(cancellationToken);
+            var output = await outputTask;
+            var error = await errorTask;
+            var sensitive = credentials.Values.Where(value => value.Length > 0).Any(value =>
+                output.Contains(value, StringComparison.Ordinal) || error.Contains(value, StringComparison.Ordinal));
+            return sensitive
+                ? new CredentialProcessResult(1, string.Empty, string.Empty, true)
+                : new CredentialProcessResult(process.ExitCode, output, error, false);
+        }
+        catch
+        {
+            if (!process.HasExited) process.Kill(entireProcessTree: true);
+            throw;
+        }
+        finally
+        {
+            Array.Clear(payload);
+            foreach (var target in credentials.Keys.ToArray()) credentials[target] = string.Empty;
+            credentials.Clear();
+        }
+    }
+
     internal static async Task<Process> StartAsync(
         ProcessStartInfo startInfo,
         ChildRole role,

supervisor/Dada.Supervisor/OfflineCommandRouter.cs

@@ -29,6 +29,7 @@ internal static class OfflineCommandRouter
                 "secrets" => RunSecrets(args.Skip(1).ToArray(), credentials),
                 "admin-allowlist" => RunAdminAllowlist(args.Skip(1).ToArray(), credentials),
                 "doctor" when args.Length == 1 => RunDoctor(credentials),
+                "validate-external" => await ControlledExternalValidationLauncher.RunAsync(args.Skip(1).ToArray(), credentials),
                 _ => Usage(),
             };
         }
@@ -198,7 +199,7 @@ internal static class OfflineCommandRouter
 
     private static int Usage()
     {
-        WriteResult("usage: configure init|data-root|asset-root; secrets set|status|clear; admin-allowlist add|remove|status; doctor", false);
+        WriteResult("usage: configure init|data-root|asset-root; secrets set|status|clear; admin-allowlist add|remove|status; doctor; validate-external", false);
         return 2;
     }
 }

tests/package/wp7-02-controlled-executor.test.mjs

@@ -6,6 +6,7 @@ import {
   buildControlledExecutionPlan,
   buildProviderRequest,
   buildSanitizedResponseEvidence,
+  executeProviderRequest,
   normalizeProviderResponse,
   validateSanitizedEvidence,
 } from "../../scripts/lib/wp7-02-controlled-executor.mjs";
@@ -107,3 +108,33 @@ test("TDD-WP7-EXT-001 rejects sensitive or shared evidence fields", () => {
   }
   assert.throws(() => validateSanitizedEvidence({ status: "passed", verified: true }), /WP7_02_SHARED_VERIFIED_FORBIDDEN/);
 });
+
+test("TDD-WP7-EXT-001 confines the credential to the request header and discards provider error bodies", async () => {
+  const credentialMarker = "controlled-secret-value-for-test-only";
+  const success = await executeProviderRequest({
+    fetchImpl: async (_url, init) => {
+      assert.equal(init.headers.authorization, `Bearer ${credentialMarker}`);
+      return new Response(JSON.stringify({
+        candidates: [{ content: { parts: [{ inlineData: { data: onePixelPng.toString("base64"), mimeType: "image/png" } }] } }],
+      }), { headers: { "content-type": "application/json" }, status: 200 });
+    },
+    modelConfig: models[0],
+    prompt: "controlled fixture prompt",
+    ratio: "1:1",
+    token: credentialMarker,
+  });
+  assert.equal(success.http_status, 200);
+  assert.doesNotMatch(JSON.stringify({ ...success, normalized: undefined }), new RegExp(credentialMarker));
+
+  await assert.rejects(() => executeProviderRequest({
+    fetchImpl: async () => new Response(JSON.stringify({ provider_body: credentialMarker }), { status: 502 }),
+    modelConfig: models[0],
+    prompt: "controlled fixture prompt",
+    ratio: "1:1",
+    token: credentialMarker,
+  }), (error) => {
+    assert.equal(error.message, "WP7_02_UPSTREAM_HTTP_502");
+    assert.doesNotMatch(error.message, new RegExp(credentialMarker));
+    return true;
+  });
+});