fix(rgi): user-friendly page + 3-step download flow

Rewrote RGI test page:
- Clean card-based UI with status icons (green=solved, amber=pending)
- Click row to expand and see issued documents
- Each document has a direct "Descarca" download button
- Filter toggle "Doar solutionate cu termen viitor"
- No more raw JSON tables

Download route now follows eTerra's 3-step flow:
1. fileVisibility — check access, get fileId
2. confirmOnView — confirm document view
3. loadDocument/downloadFile — actual file download

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

src/app/api/eterra/rgi/download-doc/route.ts

@@ -5,21 +5,33 @@ export const runtime = "nodejs";
 export const dynamic = "force-dynamic";
 
 /**
- * GET /api/eterra/rgi/download-doc?workspaceId=...&applicationId=...&docId=...
+ * GET /api/eterra/rgi/download-doc?workspaceId=127&applicationId=X&docId=Y&fileId=Z
  *
- * Check file visibility and download an issued document from RGI.
- * Step 1: Calls rgi/appdetail/issueddocs/fileVisibility to check access.
- * Step 2: Downloads the file via rgi/appdetail/issueddocs/download.
+ * Downloads an issued document from eTerra RGI.
+ * 3-step flow:
+ *   1. fileVisibility/{wid}/{appId}/{docId} — check access, get fileId
+ *   2. confirmOnView/{wid}/{appId}/{fileId} — confirm view
+ *   3. loadDocument/downloadFile/{wid}/{fileId} — actual download
+ *
+ * If fileId is provided, skips step 1.
  */
 export async function GET(req: NextRequest) {
   try {
     const workspaceId = req.nextUrl.searchParams.get("workspaceId");
     const applicationId = req.nextUrl.searchParams.get("applicationId");
     const docId = req.nextUrl.searchParams.get("docId");
+    let fileId = req.nextUrl.searchParams.get("fileId");
 
-    if (!workspaceId || !applicationId || !docId) {
+    if (!workspaceId || !applicationId) {
       return NextResponse.json(
-        { error: "workspaceId, applicationId and docId are required" },
+        { error: "workspaceId and applicationId are required" },
+        { status: 400 },
+      );
+    }
+
+    if (!docId && !fileId) {
+      return NextResponse.json(
+        { error: "docId or fileId is required" },
         { status: 400 },
       );
     }
@@ -27,23 +39,41 @@ export async function GET(req: NextRequest) {
     const username = process.env.ETERRA_USERNAME ?? "";
     const password = process.env.ETERRA_PASSWORD ?? "";
     if (!username || !password) {
-      return NextResponse.json(
-        { error: "Credentials missing" },
-        { status: 500 },
-      );
+      return NextResponse.json({ error: "Credentials missing" }, { status: 500 });
     }
 
     const client = await EterraClient.create(username, password);
 
-    // Step 1: Check file visibility
-    const visibilityPath = `rgi/appdetail/issueddocs/fileVisibility/${encodeURIComponent(workspaceId)}/${encodeURIComponent(applicationId)}/${encodeURIComponent(docId)}`;
-    const visibility = await client.rgiGet(visibilityPath);
+    // Step 1: Get fileId from visibility check (if not provided)
+    if (!fileId && docId) {
+      const visibility = await client.rgiGet(
+        `rgi/appdetail/issueddocs/fileVisibility/${workspaceId}/${applicationId}/${docId}`,
+      );
+      // Extract fileId from visibility response
+      if (visibility && typeof visibility === "object") {
+        const v = visibility as Record<string, unknown>;
+        fileId = String(
+          v.fileId ?? v.id ?? v.pk ?? v.documentFileId ?? "",
+        );
+      }
+      if (!fileId) {
+        return NextResponse.json({ error: "fileId not found in visibility response", visibility }, { status: 404 });
+      }
+    }
 
-    // Step 2: Attempt to download the file
+    // Step 2: Confirm on view
     try {
-      const downloadPath = `rgi/appdetail/issueddocs/download/${encodeURIComponent(workspaceId)}/${encodeURIComponent(applicationId)}/${encodeURIComponent(docId)}`;
-      const { data, contentType, filename } =
-        await client.rgiDownload(downloadPath);
+      await client.rgiGet(
+        `rgi/appdetail/issueddocs/confirmOnView/${workspaceId}/${applicationId}/${fileId}`,
+      );
+    } catch {
+      // Non-critical — continue to download
+    }
+
+    // Step 3: Download
+    const { data, contentType, filename } = await client.rgiDownload(
+      `rgi/appdetail/loadDocument/downloadFile/${workspaceId}/${fileId}`,
+    );
 
     return new NextResponse(new Uint8Array(data), {
       status: 200,
@@ -53,14 +83,6 @@ export async function GET(req: NextRequest) {
         "Content-Length": String(data.length),
       },
     });
-    } catch {
-      // Download failed — return the visibility response instead so the caller
-      // can inspect what eTerra reported (may contain a URL or error details).
-      return NextResponse.json({
-        visibility,
-        downloadFailed: true,
-      });
-    }
   } catch (error) {
     const message = error instanceof Error ? error.message : "Eroare server";
     return NextResponse.json({ error: message }, { status: 500 });