Greasy Fork

• Removed: width preservation on collapse (caused horizontal scrolling on narrow viewports)
• Collapsed blocks now use natural width instead of forced minWidth

// v4.3 // - Changed: single-block expand no longer uses scroll anchoring // - Expanding a block now keeps the header in place; code appears below (no viewport shift) // - Lets user read expanded code from the beginning instead of being scrolled to the bottom

// v4.4
// - Fixed: single-block expand now actively scrolls header to top of viewport
// - Ensures user always sees expanded code from the beginning (overrides browser scroll anchoring)

// v4.5
// - Refined: single-block expand only scrolls if header is in bottom 1/3 of viewport or off-screen
// - If header is already visible in upper 2/3, no scroll adjustment occurs
//
// v4.6
// - Fixed: single-block collapse no longer "snaps" the header down to the old footer position in some scroll states
// - Changed: when collapsing a block while its header is visible, the header is used as the scroll anchor (keeps it stable)
// - Fixed: auto-collapse on newly added blocks no longer triggers single-block scroll behavior
//
// v4.6
// - Fixed: single-block expand now first stabilizes the header position (cancels browser/scroll-area anchoring)
// - Refined: only scrolls header to top if it ends up off-screen or in the bottom ~15% of the viewport
//
// v4.7
// - Cleanup: removed unused `data` parameter from internal log function
// - Cleanup: removed unused boolean return values from createToolbarButton()
// - Cleanup: consolidated duplicate CSS rules and keyframe definitions

v4.1
- Cleanup: removed overridden CSS declaration (border-radius: 0 0 0 0)
- Cleanup: removed unused 'warn' log style
- Cleanup: removed redundant typeof guard for activeFixedState
- Cleanup: consolidated duplicate mouseleave handlers on collapse button

v4.2
- Changed: replaced localStorage with GM_setValue/GM_getValue for settings persistence
- Settings now stored via userscript manager (more reliable, syncs across browsers if supported)

v4.0
- Fixed: fixed footer now repositions when textarea grows during user input
- Added ResizeObserver on input area to detect height changes
- Footer no longer conflicts with/covers the textarea when it expands

v3.8
- Fixed: conflict with other userscripts (Multi-Provider Chat Export, etc.)
- Added 1000ms initialization delay to avoid React Hydration Error #418

v3.9
- Replaced hardcoded delay with dynamic Stabilization Observer
- Detects React hydration completion by watching for the chat input bar
- Uses requestIdleCallback for optimal performance/compatibility

Script name changed from "LMArena | Code Block Collapse" to "LMArena | Collapsible Code Blocks"