chore(api): regenerate client for F1's new 400 responses

npm run gen:api after WP-68 F1 — draft-sync and submit now document their
document-ownership 400 ProblemDetails response.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

backend/swagger.json

@@ -643,6 +643,16 @@
           "204": {
             "description": "No Content"
           },
+          "400": {
+            "description": "Bad Request",
+            "content": {
+              "application/problem+json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            }
+          },
           "404": {
             "description": "Not Found"
           }
@@ -718,6 +728,16 @@
               }
             }
           },
+          "400": {
+            "description": "Bad Request",
+            "content": {
+              "application/problem+json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemDetails"
+                }
+              }
+            }
+          },
           "409": {
             "description": "Conflict",
             "content": {

libs/shared/src/infrastructure/api-client.ts

@@ -921,6 +921,12 @@ export class ApiClient {
             return response.text().then((_responseText) => {
             return;
             });
+        } else if (status === 400) {
+            return response.text().then((_responseText) => {
+            let result400: any = null;
+            result400 = _responseText === "" ? null : JSON.parse(_responseText, this.jsonParseReviver) as ProblemDetails;
+            return throwException("Bad Request", status, _responseText, _headers, result400);
+            });
         } else if (status === 404) {
             return response.text().then((_responseText) => {
             return throwException("Not Found", status, _responseText, _headers);
@@ -1014,6 +1020,12 @@ export class ApiClient {
             result200 = _responseText === "" ? null : JSON.parse(_responseText, this.jsonParseReviver) as SubmitApplicationResponse;
             return result200;
             });
+        } else if (status === 400) {
+            return response.text().then((_responseText) => {
+            let result400: any = null;
+            result400 = _responseText === "" ? null : JSON.parse(_responseText, this.jsonParseReviver) as ProblemDetails;
+            return throwException("Bad Request", status, _responseText, _headers, result400);
+            });
         } else if (status === 404) {
             return response.text().then((_responseText) => {
             return throwException("Not Found", status, _responseText, _headers);