v4.5.2 fixes 26 confirmed bugs from a comprehensive audit:

Critical fixes:
- Fixed filename truncation bug that dropped file extensions on long titles
- Fixed crawl deduplication to preserve dynamic URLs with tracking parameters (ref, spm, ocid)
- Fixed blob storage timeout that caused ZIP/merge downloads to hang indefinitely

Other improvements:
- Enhanced download queue stability and reliability
- Added "Session Protection Mode" to prevent logout during scans on login-required portals
- Fixed accessibility issues (aria-live regions, dialog focus management)
- Clarified hover tooltips across all features
- Fixed UI layout issues in the filter panel

Grab All Files 4.5.0

New & improved
• Much deeper website scanning — finds far more pages on large sites:
- Reads sitemap.xml / robots.txt to reach pages that aren't linked anywhere in the page's HTML.
- Follows navigation hidden in JavaScript (javascript: links and onclick handlers), <frameset>/<frame>, and image-map <area> links.
- Follows GET search/pagination forms, meta-refresh redirects, Turbo Frames, Speculation Rules, htmx/Unpoly actions, and SPA router links (Angular / Vue / Nuxt).
- Follows dynamic navigation links (.php / .asp / .jsp …) and extension-less file links marked only by an icon (e.g. "icon-pdf").
- "This page and linked pages" (depth ≥ 1) now always includes everything found by "This page only".
• Smarter file names for exam past-papers and similar sites: builds names like School_Year_Subject_Type.pdf from the page structure instead of every link becoming the same "問題.pdf". Also decodes garbled PDF titles and trims "Microsoft Word - …" prefixes.
• New "Sequential numbering" download option (0001_, 0002_ …) to keep files in list order.
• Cleaner results and download bar: full-width Download / ZIP / Merge-PDF buttons and pill-style toggles.
• More reliable downloads on paid / signed-URL sites: short-lived links are downloaded first, with a clear "link expired — please rescan" message instead of a silent failure.

Fixes
• Files served via CDNs/WAFs that answer HEAD with 403 but GET with 200 are no longer wrongly shown as "unavailable" (the scanner now falls back to a small ranged GET).
• Re-clicking the toolbar icon now immediately syncs the "This Page" URL to the active tab.

v4.4.7
【追加】
・「ファイル名で重複排除」トグルを追加（「タイトルで重複排除」と独立して併用可）。
・HTTP（非HTTPS）サイトのスキャン／ダウンロードに対応。

【Firefox の改善】
・フォルダ／ZIP／PDF結合のダウンロードが正しく動作するよう修正。
・ダウンロードボタンの下に保存先（絶対パス）を表示するように改善。
・ダウンロード準備アイコンを全ブラウザーで統一。

【その他の修正】
・ディープスキャン2回目以降で種類が「?」のまま／タイトルが出ない問題を修正。
・各種フィルター（含む／除外・サイズ・重複排除）と件数カウントの不整合を修正。
・ダウンロード中のタブ切り替えで別タブの表示が壊れる問題を修正。