v3.0.0 — Status, File Browser & Notifications

What's new

• Added: Processing Status card — live table showing every conversion job with state, timestamps, duration, and a Retry button for failed files; history persists across restarts
• Added: File Browser card — browse and download files from Books Out and Comics Out directly from the WebUI; no Samba or SSH required
• Added: Notifications via Apprise — send push notifications on success and/or failure to ntfy, Discord, Slack, Telegram, Pushover, email, and 60+ other services
• Fixed: Save Configuration button moved below all settings cards so it clearly applies to both KCC and Bindery Settings