storno eFactura: forma rearanjata (butoane jos, meniu Trimite, stare pe un rand, redimensionabila), sume vizibile in grid (V(250)), fara SET STEP ON in borderou; e2e adaptat (mock xmenu)

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WsxyCHJYL6W9MZ6FPnH8ax

utile/Teste/storno/mock_xmenu_storno.prg

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+* mock_xmenu_storno.prg - mock XMENU specific testului E2E storno (test_storno_e2e.prg).
+* Raspunde din coada PUBLIC gaXmenuQueue/gnXmenuQueuePos (populata de test inainte de fiecare
+* Click care deschide meniul cmdTrimite); coada goala -> 0 (echivalent Esc/renuntare la xmenu).
+* Logheaza toate apelurile in PUBLIC gaXmenuCalls/gnXmenuCalls.
+FUNCTION xmenu
+	LPARAMETERS tcItems, tnBar
+	LOCAL lnRaspuns
+	IF TYPE('gnXmenuQueuePos') = 'N' AND gnXmenuQueuePos <= ALEN(gaXmenuQueue)
+		lnRaspuns = gaXmenuQueue[gnXmenuQueuePos]
+		gnXmenuQueuePos = gnXmenuQueuePos + 1
+	ELSE
+		lnRaspuns = 0
+	ENDIF
+	IF TYPE('gnXmenuCalls') = 'N'
+		gnXmenuCalls = gnXmenuCalls + 1
+		DIMENSION gaXmenuCalls[gnXmenuCalls, 2]
+		gaXmenuCalls[gnXmenuCalls, 1] = TRANSFORM(tcItems)
+		gaXmenuCalls[gnXmenuCalls, 2] = lnRaspuns
+	ENDIF
+	IF TYPE('gcUILog') = 'C'
+		DO PrLogLocal WITH 'MOCK xmenu: [' + LEFT(TRANSFORM(tcItems), 100) + '] -> ' + TRANSFORM(lnRaspuns)
+	ENDIF
+	RETURN lnRaspuns
+ENDFUNC