feat(behandelportal): WP-65b beoordeling besluit (decision write)

Adds POST /beoordeling/{id}/besluit: a Besluit enum (Goedkeuren/Afwijzen/
MeerInfoOpvragen) backed by new Aanvraag.BesluitStatus/BesluitToelichting
columns, gated by the same BeoordelingRules.CanDecide the read side's
canBesluiten flag already uses (409 on an illegal transition, 400 on a
missing required toelichting). Mappers.ToStatusDto gains the "a recorded
decision wins" branch. FE: besluit.machine.ts + besluit-form organism
(same form idiom as change-request-form), wired into the beoordeling page
behind the server's canBesluiten flag.

Completes WP-65 (65a + 65b) — verified end-to-end against a running
backend (werkvoorraad -> beoordeling -> besluit -> status reflected back).

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

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

@@ -1165,6 +1165,71 @@ export class ApiClient {
         return Promise.resolve<BeoordelingViewDto>(null as any);
     }
 
+    /**
+     * @return OK
+     */
+    besluit(id: string, body: RecordBesluitRequest): Promise<RecordBesluitResponse> {
+        let url_ = this.baseUrl + "/api/v1/beoordeling/{id}/besluit";
+        if (id === undefined || id === null)
+            throw new globalThis.Error("The parameter 'id' must be defined.");
+        url_ = url_.replace("{id}", encodeURIComponent("" + id));
+        url_ = url_.replace(/[?&]$/, "");
+
+        const content_ = JSON.stringify(body);
+
+        let options_: RequestInit = {
+            body: content_,
+            method: "POST",
+            headers: {
+                "Content-Type": "application/json",
+                "Accept": "application/json"
+            }
+        };
+
+        return this.http.fetch(url_, options_).then((_response: Response) => {
+            return this.processBesluit(_response);
+        });
+    }
+
+    protected processBesluit(response: Response): Promise<RecordBesluitResponse> {
+        const status = response.status;
+        let _headers: any = {}; if (response.headers && response.headers.forEach) { response.headers.forEach((v: any, k: any) => _headers[k] = v); };
+        if (status === 200) {
+            return response.text().then((_responseText) => {
+            let result200: any = null;
+            result200 = _responseText === "" ? null : JSON.parse(_responseText, this.jsonParseReviver) as RecordBesluitResponse;
+            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 === 403) {
+            return response.text().then((_responseText) => {
+            let result403: any = null;
+            result403 = _responseText === "" ? null : JSON.parse(_responseText, this.jsonParseReviver) as ProblemDetails;
+            return throwException("Forbidden", status, _responseText, _headers, result403);
+            });
+        } else if (status === 404) {
+            return response.text().then((_responseText) => {
+            return throwException("Not Found", status, _responseText, _headers);
+            });
+        } else if (status === 409) {
+            return response.text().then((_responseText) => {
+            let result409: any = null;
+            result409 = _responseText === "" ? null : JSON.parse(_responseText, this.jsonParseReviver) as ProblemDetails;
+            return throwException("Conflict", status, _responseText, _headers, result409);
+            });
+        } else if (status !== 200 && status !== 204) {
+            return response.text().then((_responseText) => {
+            return throwException("An unexpected server error occurred.", status, _responseText, _headers);
+            });
+        }
+        return Promise.resolve<RecordBesluitResponse>(null as any);
+    }
+
     /**
      * @return No Content
      */
@@ -2248,6 +2313,15 @@ export interface PublishOrgTemplateResponse {
     affectedUnsentBriefs?: number;
 }
 
+export interface RecordBesluitRequest {
+    besluit?: string | undefined;
+    toelichting?: string | undefined;
+}
+
+export interface RecordBesluitResponse {
+    status?: AanvraagStatusDto;
+}
+
 export interface ReferentieResponse {
     referentie?: string | undefined;
 }