v1.4.0

Added

• Volcengine Ark Seedance video generation provider (async submit + poll)
• Entry points config and extension info editing in ext-studio
• Search box in skills panel tab bar
• Default letter gradient icon for extensions without a custom icon
• Skeleton loading for published extensions list in ext-studio

Improved

• Extensions market renders display_name instead of raw slug
• ext-studio extension picker and cards show display name; unit tags aggregated by type
• Session list "Today / Yesterday" labels localized

Fixed

• Terminal Pass 1 echo-strip no longer swallows real output (C-5701)
• OS metadata files (.DS_Store, __MACOSX) excluded from packed extension zips (C-5728)
• TUI exit now restores original terminal settings via stty (C-5724)
• Local image cache busted with mtime version param when file is overwritten (C-5703)
• Generated media usage correctly associated with sessions (C-5739)
• Mobile header search action alignment (C-5733)
• Session search shortcut hint adapted for web (C-5734)
• Memory card expand button height aligned with other action buttons
• Billing model filter select styling improved
• Modal overlay click-to-close disabled (prevents accidental dismissal)
• Version number / date separator added in extension version history
• All users can now publish extensions (permission gate removed)
• Invalid extension version format shows inline error in publish modal
• Brand update button hover color uses correct CSS variable