feat(wds): add manual sync trigger button with force-run mode

- triggerForceSync() resets error steps, clears lastSessionDate, starts sync immediately
- Force mode uses extended night window (22:00-05:00) instead of weekend-only
- API action 'trigger' starts sync in background, returns immediately
- 'Porneste sync' button in header (hidden when already running)
- Respects __parcelSyncRunning guard to prevent concurrent runs

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

src/app/(modules)/wds/page.tsx

@@ -16,6 +16,7 @@ import {
   AlertTriangle,
   WifiOff,
   Activity,
+  Play,
 } from "lucide-react";
 import { Button } from "@/shared/components/ui/button";
 import { Input } from "@/shared/components/ui/input";
@@ -251,6 +252,21 @@ export default function WeekendDeepSyncPage() {
               {lastRefresh.toLocaleTimeString("ro-RO", { hour: "2-digit", minute: "2-digit", second: "2-digit" })}
             </span>
           )}
+          {syncStatus !== "running" && (
+            <Button
+              variant="outline"
+              size="sm"
+              className="text-indigo-600 border-indigo-300 hover:bg-indigo-50 dark:text-indigo-400 dark:border-indigo-700 dark:hover:bg-indigo-950/30"
+              disabled={actionLoading}
+              onClick={() => {
+                if (window.confirm("Pornesti sincronizarea manuala? Va procesa toti pasii pending."))
+                  void doAction({ action: "trigger" });
+              }}
+            >
+              <Play className="h-4 w-4 mr-1" />
+              Porneste sync
+            </Button>
+          )}
           <Button
             variant="ghost"
             size="sm"

src/app/api/eterra/weekend-sync/route.ts

@@ -3,6 +3,7 @@ import { PrismaClient, Prisma } from "@prisma/client";
 import {
   isWeekendWindow,
   getWeekendSyncActivity,
+  triggerForceSync,
 } from "@/modules/parcel-sync/services/weekend-deep-sync";
 
 const prisma = new PrismaClient();
@@ -151,13 +152,25 @@ export async function GET() {
 export async function POST(request: Request) {
   // Auth handled by middleware (route is not excluded)
   const body = (await request.json()) as {
-    action: "add" | "remove" | "reset" | "reset_all" | "set_priority";
+    action: "add" | "remove" | "reset" | "reset_all" | "set_priority" | "trigger";
     siruta?: string;
     name?: string;
     county?: string;
     priority?: number;
   };
 
+  // Trigger is handled separately — starts sync immediately
+  if (body.action === "trigger") {
+    const result = await triggerForceSync();
+    if (!result.started) {
+      return NextResponse.json(
+        { error: result.reason },
+        { status: 409 },
+      );
+    }
+    return NextResponse.json({ ok: true, message: "Sincronizare pornita" });
+  }
+
   const state = await getOrCreateState();
 
   switch (body.action) {