release: v0.5.0 — 升级 MetonaEditor 0.4.0 / MetonaToast 0.5.0，数据库迁移 MetonaSqlark 0.4.1

- 编辑器升级 0.4.0：TypeScript 全模块重构、启用浮动格式工具栏
- 通知升级 0.5.0：钩子系统、新增动画
- 移除 Dexie.js，迁移至 MetonaSqlark 0.4.1（AriaEngine：LSM-Tree + WAL + MVCC）
- 数据库更换为 MarkLiteV2，旧 Dexie 数据放弃
- 修复 Editor 组件无条件重渲染（getActiveTab 返回新引用）
- 更新关于弹框、README、DESIGN 文档

src/renderer/components/OutlinePanel/outlineUtils.ts

@@ -1,27 +1,27 @@
-export interface Heading {
-  level: number
-  text: string
-  /** Position in document (character offset from markdown source) */
-  pos: number
-}
-
-const HEADING_RE = /^(#{1,6})\s+(.+)$/gm
-
-/**
- * Parse headings from raw markdown content using regex.
- */
-export function parseHeadings(markdown: string): Heading[] {
-  const headings: Heading[] = []
-  let match: RegExpExecArray | null
-
-  // Reset regex state
-  HEADING_RE.lastIndex = 0
-
-  while ((match = HEADING_RE.exec(markdown)) !== null) {
-    const level = match[1].length
-    const text = match[2].trim()
-    headings.push({ level, text, pos: match.index })
-  }
-
-  return headings
-}
+export interface Heading {
+  level: number
+  text: string
+  /** Position in document (character offset from markdown source) */
+  pos: number
+}
+
+const HEADING_RE = /^(#{1,6})\s+(.+)$/gm
+
+/**
+ * Parse headings from raw markdown content using regex.
+ */
+export function parseHeadings(markdown: string): Heading[] {
+  const headings: Heading[] = []
+  let match: RegExpExecArray | null
+
+  // Reset regex state
+  HEADING_RE.lastIndex = 0
+
+  while ((match = HEADING_RE.exec(markdown)) !== null) {
+    const level = match[1].length
+    const text = match[2].trim()
+    headings.push({ level, text, pos: match.index })
+  }
+
+  return headings
+}