fix(frontend): prefill host pattern in CoPilot credential setup modal

The SetupRequirementsCard passed inputValues={{}} to CredentialsGroupedView,
which meant the HostScopedCredentialsModal never received the target URL
from the backend's discriminator_values. The "Host Pattern" field was always
empty even though the CoPilot knew the exact host (e.g. api.openai.com).

Add buildSiblingInputsFromCredentials() to extract the discriminator value
(URL) from the missing_credentials setup_info and pass it as siblingInputs
so the modal can prefill the host pattern.

autogpt_platform/frontend/src/app/(platform)/copilot/tools/RunBlock/components/SetupRequirementsCard/SetupRequirementsCard.tsx

@@ -11,6 +11,7 @@ import { useCopilotChatActions } from "../../../../components/CopilotChatActions
 import { ContentMessage } from "../../../../components/ToolAccordion/AccordionContent";
 import {
   buildExpectedInputsSchema,
+  buildSiblingInputsFromCredentials,
   coerceCredentialFields,
   coerceExpectedInputs,
 } from "./helpers";
@@ -46,6 +47,10 @@ export function SetupRequirementsCard({
     output.setup_info.user_readiness?.missing_credentials,
   );
 
+  const siblingInputs = buildSiblingInputsFromCredentials(
+    output.setup_info.user_readiness?.missing_credentials,
+  );
+
   const expectedInputs = coerceExpectedInputs(
     (output.setup_info.requirements as Record<string, unknown>)?.inputs,
   );
@@ -118,7 +123,7 @@ export function SetupRequirementsCard({
               credentialFields={credentialFields}
               requiredCredentials={requiredCredentials}
               inputCredentials={inputCredentials}
-              inputValues={{}}
+              inputValues={siblingInputs}
               onCredentialChange={handleCredentialChange}
             />
           </div>

autogpt_platform/frontend/src/app/(platform)/copilot/tools/RunBlock/components/SetupRequirementsCard/helpers.ts

@@ -71,6 +71,45 @@ export function coerceCredentialFields(rawMissingCredentials: unknown): {
   return { credentialFields, requiredCredentials };
 }
 
+/**
+ * Build a sibling-inputs dict from the missing_credentials discriminator values.
+ *
+ * When the backend resolves credentials for host-scoped blocks (e.g.
+ * SendAuthenticatedWebRequestBlock), it adds the target URL to
+ * `discriminator_values`.  The credential modal uses `siblingInputs`
+ * to extract the host and prefill the "Host Pattern" field.
+ *
+ * This function builds that mapping from the `discriminator` field name
+ * and the first `discriminator_values` entry for each credential.
+ */
+export function buildSiblingInputsFromCredentials(
+  rawMissingCredentials: unknown,
+): Record<string, unknown> {
+  const result: Record<string, unknown> = {};
+  if (!rawMissingCredentials || typeof rawMissingCredentials !== "object")
+    return result;
+
+  const missing = rawMissingCredentials as Record<string, unknown>;
+  for (const value of Object.values(missing)) {
+    if (!value || typeof value !== "object") continue;
+    const cred = value as Record<string, unknown>;
+
+    const discriminator =
+      typeof cred.discriminator === "string" ? cred.discriminator : null;
+    const discriminatorValues = Array.isArray(cred.discriminator_values)
+      ? cred.discriminator_values.filter(
+          (v): v is string => typeof v === "string",
+        )
+      : [];
+
+    if (discriminator && discriminatorValues.length > 0) {
+      result[discriminator] = discriminatorValues[0];
+    }
+  }
+
+  return result;
+}
+
 export function coerceExpectedInputs(rawInputs: unknown): Array<{
   name: string;
   title: string;