fixed it again

Author: titaniummachine1

README.md

@@ -49,7 +49,6 @@ local function OnDraw()
         print("Current slider value:", sliderValue)
 
     end
-    TimMenu.End() -- Always call End() to clean up
 end
 
 callbacks.Register("Draw", "ExampleDraw", OnDraw)
@@ -60,9 +59,6 @@ callbacks.Register("Draw", "ExampleDraw", OnDraw)
 ### Window Management
 
 - Begin: `bool = TimMenu.Begin(title, [visible, [id]])`
-- BeginSafe: `bool = TimMenu.BeginSafe(title, [visible, [id]])` - Safe version with error handling
-- End: `TimMenu.End()` - Always call to clean up window state
-- EndSafe: `TimMenu.EndSafe()` - Safe version with error handling
 
 ### Layout
 
@@ -122,7 +118,6 @@ local function OnDraw()
             selectedOption = TimMenu.Dropdown("Quality", selectedOption, options)
         end
     end
-    TimMenu.End() -- Always call End() to clean up
 end
 ```
 
@@ -137,7 +132,6 @@ local function OnDraw()
         TimMenu.Text(string.format("RGB: %d, %d, %d, %d",
             backgroundColor[1], backgroundColor[2], backgroundColor[3], backgroundColor[4]))
     end
-    TimMenu.End() -- Always call End() to clean up
 end
 ```
 
@@ -158,61 +152,15 @@ local function OnDraw()
             end
         end
     end
-    TimMenu.End() -- Always call End() to clean up
 end
 ```
 
-## Recommended Safe Usage Pattern
+## Tips
 
-For robust menu creation, use the safe versions of Begin/End with proper error handling:
-
-```lua
-local TimMenu = require("TimMenu")
-
-local function CreateSafeMenu()
-    if TimMenu.BeginSafe("My Safe Menu") then
-        -- Your widgets here
-        local value = TimMenu.Slider("Test Slider", 50, 0, 100, 1)
-        if TimMenu.Button("Test Button") then
-            print("Button clicked!")
-        end
-    end
-    TimMenu.EndSafe() -- Always called, even if there are errors
-end
-
-callbacks.Register("Draw", "SafeMenu", CreateSafeMenu)
-```
-
-## Error Detection and Debugging
-
-TimMenu now includes comprehensive assertions and error checking to help debug issues:
-
-### Assertion Coverage
-
-- **Parameter validation** - All functions validate input parameters with detailed error messages
-- **Window state validation** - Ensures windows are in valid states before operations
-- **Layout validation** - Catches layout issues like infinite expansion, invalid spacing
-- **Widget usage validation** - Ensures widgets are only called within Begin/End blocks
-- **Dimension validation** - Prevents windows from growing beyond reasonable limits (5000px threshold)
-- **Position validation** - Detects invalid window positions that could cause issues
-
-### Common Error Messages
-
-When assertions fail, you'll see detailed error messages like:
-```
-[TimMenu] Begin: Parameter 'title' cannot be empty string
-[TimMenu] AddWidget: Window dimensions too large W=6000, H=3000 (possible infinite expansion)
-[TimMenu] NextLine: Must be called between TimMenu.Begin() and TimMenu.End()
-[TimMenu] Slider: min (50) must be less than max (25)
-[TimMenu] Dropdown: options table cannot be empty
-```
-
-### Debugging Tips
-
-- **Enable assertions** by running in debug mode - they help catch issues early
-- **Check error messages** carefully - they tell you exactly what went wrong and where
-- **Use BeginSafe/EndSafe** for production code to handle assertion failures gracefully
-- **Monitor window dimensions** - if windows grow beyond 5000px, there's likely an infinite expansion bug
+- Use `BeginSector`/`EndSector` to group widgets in bordered panels.
+- Sectors can be easily stacked horizontally and vertically
+- All widgets return their current value - no need to track "changed" flags
+- Values are automatically maintained between frames by the widget system
 
 ## Sector Grouping
 
@@ -228,7 +176,6 @@ if TimMenu.Begin("Example Window") then
     local volume = TimMenu.Slider("Volume", 50, 0, 100, 1)
     TimMenu.EndSector()
 end
-TimMenu.End() -- Always call End() to clean up
 ```
 
 ## Changelog
@@ -245,16 +192,9 @@ TimMenu.End() -- Always call End() to clean up
 
 - Keybind widget now recalculates its display label immediately after a key press and dynamically computes its draw position inside the rendering callback, eliminating frame delay when dragging windows.
 
-### Added Comprehensive Assertions and Error Detection
+### Fixed TabControl Header Lag
 
-- **Complete assertion coverage** - Added parameter validation, state checks, and error detection throughout the codebase
-- **Detailed error messages** - All assertion failures provide specific information about what went wrong and where
-- **Window dimension limits** - Added 5000px threshold to catch infinite expansion issues early
-- **Layout validation** - Added checks for invalid spacing, cursor positions, and widget placement
-- **Widget usage validation** - Ensures all widgets are called within proper Begin/End blocks
-- **Parameter type checking** - Validates all function parameters with descriptive error messages
-- **Safe wrapper functions** - BeginSafe() and EndSafe() provide error handling for production use
-- **Debugging documentation** - Added comprehensive debugging guide with common error patterns
+- Header-mode tabs now calculate their offsets relative to the window's current position at draw time, preventing one-frame lag during window movement.
 
 ## License