优化错误处理逻辑，增加用户不存在时的自动登出功能。更新阅读页内容解析，支持TipTap HTML格式，提升用户体验。

miniprogram/utils/contentParser.js

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+/**
+ * Soul创业派对 - 内容解析工具
+ * 解析 TipTap HTML（含 <span data-type="mention">）为阅读页可展示的 segments
+ */
+
+/**
+ * 判断内容是否为 HTML（含标签）
+ */
+function isHtmlContent(content) {
+  if (!content || typeof content !== 'string') return false
+  const trimmed = content.trim()
+  return trimmed.includes('<') && trimmed.includes('>') && /<[a-z][^>]*>/i.test(trimmed)
+}
+
+/**
+ * 从 HTML 中解析出段落与 mention 片段
+ * TipTap mention: <span data-type="mention" data-id="..." data-label="...">@nickname</span>
+ */
+function parseHtmlToSegments(html) {
+  const lines = []
+  const segments = []
+
+  // 1. 块级元素拆成段落
+  let text = html
+  text = text.replace(/<\/p>\s*<p[^>]*>/gi, '\n\n')
+  text = text.replace(/<p[^>]*>/gi, '')
+  text = text.replace(/<\/p>/gi, '\n')
+  text = text.replace(/<div[^>]*>/gi, '')
+  text = text.replace(/<\/div>/gi, '\n')
+  text = text.replace(/<br\s*\/?>/gi, '\n')
+  text = text.replace(/<\/?h[1-6][^>]*>/gi, '\n')
+  text = text.replace(/<\/?blockquote[^>]*>/gi, '\n')
+  text = text.replace(/<\/?ul[^>]*>/gi, '\n')
+  text = text.replace(/<\/?ol[^>]*>/gi, '\n')
+  text = text.replace(/<li[^>]*>/gi, '• ')
+  text = text.replace(/<\/li>/gi, '\n')
+
+  // 2. 逐段解析：提取文本与 mention
+  const blocks = text.split(/\n+/)
+  for (const block of blocks) {
+    const blockSegments = []
+    const mentionRe = /<span[^>]*data-type="mention"[^>]*>([^<]*)<\/span>/gi
+    let lastEnd = 0
+    let m
+    while ((m = mentionRe.exec(block)) !== null) {
+      const before = block.slice(lastEnd, m.index).replace(/<[^>]+>/g, '').replace(/&nbsp;/g, ' ').replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>')
+      if (before) blockSegments.push({ type: 'text', text: before })
+      const idMatch = m[0].match(/data-id="([^"]*)"/)
+      const labelMatch = m[0].match(/data-label="([^"]*)"/)
+      const userId = idMatch ? idMatch[1].trim() : ''
+      const nickname = labelMatch ? labelMatch[1].trim() : (m[1] || '').replace(/^@/, '').trim()
+      blockSegments.push({ type: 'mention', userId, nickname })
+      lastEnd = m.index + m[0].length
+    }
+    const after = block.slice(lastEnd).replace(/<[^>]+>/g, '').replace(/&nbsp;/g, ' ').replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>')
+    if (after) blockSegments.push({ type: 'text', text: after })
+    const lineText = block.replace(/<[^>]+>/g, '').replace(/&nbsp;/g, ' ').replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>').trim()
+    if (lineText) {
+      lines.push(lineText)
+      segments.push(blockSegments.length ? blockSegments : [{ type: 'text', text: lineText }])
+    }
+  }
+  return { lines, segments }
+}
+
+/**
+ * 纯文本按行解析（无 mention）
+ */
+function parsePlainTextToSegments(text) {
+  const lines = text.split('\n').map(l => l.trim()).filter(l => l.length > 0)
+  const segments = lines.map(line => [{ type: 'text', text: line }])
+  return { lines, segments }
+}
+
+/**
+ * 将原始内容解析为 contentSegments（用于阅读页展示）
+ * @param {string} rawContent - 原始内容（TipTap HTML 或纯文本）
+ * @returns {{ lines: string[], segments: Array<Array<{type, text?, userId?, nickname?}>> }}
+ */
+function parseContent(rawContent) {
+  if (!rawContent || typeof rawContent !== 'string') {
+    return { lines: [], segments: [] }
+  }
+  if (isHtmlContent(rawContent)) {
+    return parseHtmlToSegments(rawContent)
+  }
+  return parsePlainTextToSegments(rawContent)
+}
+
+module.exports = {
+  parseContent,
+  isHtmlContent
+}