feat(eterra): RGI API routes + test page for issued documents

New eTerra RGI (Registrul General de Intrare) integration:

API routes (/api/eterra/rgi/):
- POST /applications — list applications with workspace/year filters
- GET /details?applicationId=X — application details
- GET /issued-docs?applicationId=X&workspaceId=Y — issued documents list
- GET /download-doc?wid=X&aid=Y&did=Z — download issued document

EterraClient: added rgiPost, rgiGet, rgiDownload methods for RGI API.

Test page (/rgi-test):
- Filters: workspace, orgUnit, year
- Toggle: "Doar solutionate cu termen viitor"
- Table with application list, expandable issued docs, download links
- Raw JSON debug sections (collapsible)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/modules/parcel-sync/services/eterra-client.ts

@@ -982,6 +982,54 @@ export class EterraClient {
     );
   }
 
+  /* ── RGI (Registrul General de Intrare) API ───────────────── */
+
+  /**
+   * Generic RGI POST request with JSON body.
+   * Uses the same JSESSIONID cookie jar as GIS queries.
+   */
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  async rgiPost<T = any>(path: string, body?: unknown): Promise<T> {
+    const url = `${BASE_URL}/api/${path}`;
+    return this.requestRaw(() =>
+      this.client.post(url, body ?? {}, {
+        headers: { "Content-Type": "application/json;charset=UTF-8" },
+        timeout: this.timeoutMs,
+      }),
+    );
+  }
+
+  /**
+   * Generic RGI GET request.
+   */
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  async rgiGet<T = any>(path: string): Promise<T> {
+    const url = `${BASE_URL}/api/${path}`;
+    return this.requestRaw(() =>
+      this.client.get(url, { timeout: this.timeoutMs }),
+    );
+  }
+
+  /**
+   * Download a file from RGI (returns Buffer).
+   */
+  async rgiDownload(path: string): Promise<{ data: Buffer; contentType: string; filename: string }> {
+    const url = `${BASE_URL}/api/${path}`;
+    const response = await this.requestWithRetry(() =>
+      this.client.get(url, {
+        timeout: this.timeoutMs,
+        responseType: "arraybuffer",
+      }),
+    );
+    const cd = (response as { headers?: Record<string, string> }).headers?.["content-disposition"] ?? "";
+    const match = /filename="?([^"]+)"?/.exec(cd);
+    return {
+      data: Buffer.from(response.data as ArrayBuffer),
+      contentType: (response as { headers?: Record<string, string> }).headers?.["content-type"] ?? "application/octet-stream",
+      filename: match?.[1] ?? "document.pdf",
+    };
+  }
+
   private async requestWithRetry<T>(request: () => Promise<T>) {
     let attempt = 0;
     while (true) {