Release v15.17.0

What's New

• AI agent tool upgrade: the LLM agent can now read a page's real HTML source, run JavaScript on the live page, search the web, and export multi-chapter EPUBs
• Double-click a volume key to go back (opt-in gesture setting; single tap still turns the page, long-press still adjusts volume)

Improvements

• Compose performance pass: far fewer recompositions in the toolbar, tab overview, context menu, TTS dialog, GPT query list, and adblock list; favicon bitmaps are cached
• Config screens share a common scaffold and follow the app locale

Bug Fixes

• In-place translation no longer requests each paragraph twice
• "Allow video autoplay" setting now actually blocks autoplay on feed sites
• Fullscreen on Android 11+: system bars swipe in transiently and restore symmetrically when leaving fullscreen
• Fixed three WebView lifecycle leaks; background tab WebViews are detached and hidden properly
• Closing all tabs is now a single batch operation
• In-progress edits in config screens survive rotation; GPT action dialog no longer wipes typed fields
• Two-pane layout keeps its arrangement and split ratio across orientation changes
• Toolbar and status-bar clocks tick once per minute, aligned to the minute
• Highlights export no longer mixes up article IDs
• Hardware Enter in the URL bar no longer submits twice; D-pad focus navigation works when page-turn keys are off
• Many other small UI fixes from a full audit (HTTP-auth password masking, font boldness slider, FAB position, drag smoothness, tab focus border)