MRBS 1.12.2 等保2.0二级整改完整提交

包含：登录失败锁定、90天密码有效期、30分钟会话超时、
强制改密、登录审计日志、屏幕水印、企业背景图、
备案信息固定底部、favicon、JS空集合保护、
会话过期体验优化（403 JSON）、display_errors 关闭、
固定 key 根治 Integrity check failed 等全部改动

注意：config.inc.php/.htaccess/.user.ini 含敏感信息，
通过 .gitignore 排除，勿推送到公开仓库。

tzurl/zoneinfo/America/Nuuk.ics

@@ -0,0 +1,64 @@
+BEGIN:VCALENDAR
+PRODID:-//tzurl.org//NONSGML Olson 2025c//EN
+VERSION:2.0
+BEGIN:VTIMEZONE
+TZID:America/Nuuk
+LAST-MODIFIED:20251211T094730Z
+TZURL:https://www.tzurl.org/zoneinfo/America/Nuuk
+X-LIC-LOCATION:America/Nuuk
+X-PROLEPTIC-TZNAME:LMT
+BEGIN:STANDARD
+TZNAME:-03
+TZOFFSETFROM:-032656
+TZOFFSETTO:-0300
+DTSTART:19160728T000000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZNAME:-02
+TZOFFSETFROM:-0300
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+END:DAYLIGHT
+BEGIN:STANDARD
+TZNAME:-03
+TZOFFSETFROM:-0200
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+DTSTART:19800927T230000
+RRULE:FREQ=YEARLY;BYMONTH=9;BYMONTHDAY=23,24,25,26,27,28,29;BYDAY=SA;UNTIL=19950924T010000Z
+END:STANDARD
+BEGIN:DAYLIGHT
+TZNAME:-02
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0200
+DTSTART:19810328T220000
+RRULE:FREQ=YEARLY;BYMONTH=3;BYMONTHDAY=24,25,26,27,28,29,30;BYDAY=SA;UNTIL=20220327T010000Z
+END:DAYLIGHT
+BEGIN:STANDARD
+TZNAME:-03
+TZOFFSETFROM:-0200
+TZOFFSETTO:-0300
+DTSTART:19961026T230000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYMONTHDAY=24,25,26,27,28,29,30;BYDAY=SA;UNTIL=20221030T010000Z
+END:STANDARD
+BEGIN:STANDARD
+TZNAME:-02
+TZOFFSETFROM:-0300
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+DTSTART:20230325T220000
+END:STANDARD
+BEGIN:DAYLIGHT
+TZNAME:-01
+TZOFFSETFROM:-0200
+TZOFFSETTO:-0100
+DTSTART:20240330T230000
+RRULE:FREQ=YEARLY;BYMONTH=3;BYMONTHDAY=24,25,26,27,28,29,30;BYDAY=SA
+END:DAYLIGHT
+BEGIN:STANDARD
+TZNAME:-02
+TZOFFSETFROM:-0100
+TZOFFSETTO:-0200
+DTSTART:20241027T000000
+RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+END:STANDARD
+END:VTIMEZONE
+END:VCALENDAR