chore: add v0.4.8 changelog and improve scroll behavior (#234)

* chore: add v0.4.8 changelog and improve scroll behavior

- Add v0.4.8 changelog entries for recent fixes
- Fix forced scroll to bottom when returning from other tabs
- Smooth session switch with loading transition overlay
- Auto-scroll to bottom after mermaid diagram rendering
- Bump version to 0.4.8

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: replace blob URLs with persistent download URLs and add image preview

- Replace blob URLs with /api/hermes/download URLs after upload so
  attachments survive page refresh
- Add click-to-preview overlay for image attachments
- Move upload directory from /tmp to ~/.hermes-web-ui/upload

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: replace findLast with reverse+find for ES2022 compat

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: bump TypeScript lib target from ES2022 to ES2023

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: add changelog entries for blob URL fix, image preview and upload dir

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/client/src/i18n/locales/ja.ts

@@ -529,6 +529,16 @@ export default {
 
   // 更新履歴
   changelog: {
+    new_0_4_8_1: 'Safe Mermaid diagram rendering with async render and timeout fallback',
+    new_0_4_8_2: 'Fix nested markdown fence rendering truncation',
+    new_0_4_8_3: 'Fix compressed session lineage projection and search',
+    new_0_4_8_4: 'Optimize session list N+1 queries and fix search 500 on non-CJK input',
+    new_0_4_8_5: 'Fix forced scroll to bottom when switching back from other tabs',
+    new_0_4_8_6: 'Smooth session switch with loading transition overlay',
+    new_0_4_8_7: 'Fix login token validation using Hermes session endpoint',
+    new_0_4_8_8: 'Fix image attachments broken after page refresh (blob URL persistence)',
+    new_0_4_8_9: 'Click image attachments to preview in fullscreen overlay',
+    new_0_4_8_10: 'Move upload directory from temp to ~/.hermes-web-ui/upload',
     new_0_4_7_1: '思考/推論ブロックのリアルタイムストリーミング表示',
     new_0_4_7_2: 'Dockerビルド時にprepareスクリプトをスキップ',
     new_0_4_7_3: 'グループチャットのモバイルUX改善とUIのブラッシュアップ',