mw4print: persist banner text via banner.txt

- Add banner.txt load/save helpers in banner settings dialog

- Load banner from banner.txt first, with options.ini BannerText fallback

- Fix options.ini path join to include missing path separator

Gameleap/code/mw4/Code/mw4print/ChildView.cpp

@@ -359,6 +359,39 @@ void CChildView::OnFileBannerSetting()
     dlg.DoModal();
 }
 
+static void LoadBannerTextFile()
+{
+	char szPath[MAX_PATH];
+	sprintf(szPath, "%s\\banner.txt", AssetsDirectory1);
+
+	FILE* f = fopen(szPath, "rt");
+	if (f) {
+		char szBuf[sizeof(g_szPrintBanner)];
+		if (fgets(szBuf, sizeof(szBuf), f)) {
+			size_t n = strlen(szBuf);
+			while (n && (szBuf[n - 1] == '\r' || szBuf[n - 1] == '\n')) {
+				szBuf[--n] = '\0';
+			}
+			strncpy(g_szPrintBanner, szBuf, sizeof(g_szPrintBanner) - 1);
+			g_szPrintBanner[sizeof(g_szPrintBanner) - 1] = '\0';
+		}
+		fclose(f);
+	}
+}
+
+static void SaveBannerTextFile()
+{
+	char szPath[MAX_PATH];
+	sprintf(szPath, "%s\\banner.txt", AssetsDirectory1);
+
+	FILE* f = fopen(szPath, "wt");
+	if (f) {
+		fputs(g_szPrintBanner, f);
+		fputc('\n', f);
+		fclose(f);
+	}
+}
+
 /////////////////////////////////////////////////////////////////////////////
 // CDlgBannerSetting
 
@@ -378,6 +411,7 @@ void CDlgBannerSetting::DoDataExchange(CDataExchange* pDX)
 BOOL CDlgBannerSetting::OnInitDialog()
 {
     CDialog::OnInitDialog();
+	LoadBannerTextFile();
     SetDlgItemText(IDC_BANNER_TEXT, g_szPrintBanner);
     return TRUE;
 }
@@ -385,11 +419,7 @@ BOOL CDlgBannerSetting::OnInitDialog()
 void CDlgBannerSetting::OnOK()
 {
     GetDlgItemText(IDC_BANNER_TEXT, g_szPrintBanner, sizeof(g_szPrintBanner));
-
-    // Persist to options.ini so it survives a restart.
-    char szINI[MAX_PATH];
-    sprintf(szINI, "%s\\options.ini", AssetsDirectory1);
-    WritePrivateProfileString("battle tech print", "BannerText", g_szPrintBanner, szINI);
+	SaveBannerTextFile();
 
     CDialog::OnOK();
 }