fix: deploy crash + multiple bug fixes + cleanup

- server.js: fix getSiteName() returning string when not installed causing
  'getSiteName(...).then is not a function' crash on homepage (deploy blocker)
- server.js: auto-load business routes after install completes (no restart needed),
  HTML cache keyed by api_key
- install: validate db name/email/password, trigger route loading after complete
- app.js: fix forgot/reset/verify pages rendering HomePage (missing page mapping)
- verify.js: support URL token auto-verification for external registration links
- auth: new email_code template for 6-digit code, reset_password template
  (forgot-password was using verify_email template)
- upload.js: fix MP4 magic-bytes check using undefined buf variable
- tickets.js: status enum validation, anonymous submission rate limit
- security.js: XSS whitelist preserves email template HTML, strips scripts,
  blocks javascript:/data: hrefs; CORS reject returns 403
- bans.js: allow clearing reason/duration, status enum validation
- users.js: fix req.user.role ReferenceError in create user modal
- home.js: tracking results now have detail view button
- .gitignore: ignore data/ (db credentials), logs, session files, temp scripts

backend/middleware/security.js

@@ -22,9 +22,20 @@ function getApiKey() {
 function clearApiKeyCache() { cachedApiKey = null; }
 
 const xssOptions = {
-  whiteList: {},
+  whiteList: {
+    p: [], br: [], strong: [], b: [], em: [], i: [], u: [], s: [], strike: [],
+    a: ['href', 'title', 'target', 'rel'], span: [], div: [],
+    ul: [], ol: [], li: [], h1: [], h2: [], h3: [], h4: [], h5: [], h6: [],
+    table: [], thead: [], tbody: [], tfoot: [], tr: [], th: [], td: [], caption: [],
+    code: [], pre: [], blockquote: [], hr: [], img: ['src', 'alt', 'title', 'width', 'height'],
+    font: ['color', 'size', 'face'], small: [], sub: [], sup: [],
+  },
   stripIgnoreTag: true,
   stripIgnoreTagBody: ['script', 'style', 'xml', 'iframe', 'object', 'embed'],
+  onTagAttr: (tag, name, value) => {
+    if ((name === 'href' || name === 'src') && /^\s*(javascript|data):/i.test(value)) return '';
+    return;
+  },
 };
 
 function sanitize(value) {
@@ -85,6 +96,7 @@ const ticketLimiter = rateLimit({
 const ticketAnonLimiter = rateLimit({
   windowMs: 60 * 1000,
   max: 5,
+  skip: (req) => !!(req.headers.authorization),
   message: { error: '匿名提交过于频繁，请登录后再试或稍后重试' },
   standardHeaders: true,
   legacyHeaders: false,

backend/middleware/upload.js

@@ -24,7 +24,7 @@ function validateMagicBytes(buffer, mime) {
     'image/png': () => head[0] === 0x89 && head[1] === 0x50 && head[2] === 0x4E && head[3] === 0x47,
     'image/gif': () => head.toString('ascii', 0, 6) === 'GIF89a' || head.toString('ascii', 0, 6) === 'GIF87a',
     'image/webp': () => head.toString('ascii', 0, 4) === 'RIFF' && head.toString('ascii', 8, 12) === 'WEBP',
-    'video/mp4': () => buf[4] === 0x66 && buf[5] === 0x74 && buf[6] === 0x79 && buf[7] === 0x70,
+    'video/mp4': () => head[4] === 0x66 && head[5] === 0x74 && head[6] === 0x79 && head[7] === 0x70,
     'video/webm': () => head[0] === 0x1A && head[1] === 0x45 && head[2] === 0xDF && head[3] === 0xA3,
   };
   if (!sigs[mime]) return false;