From GTNH/ModularUI2 (1.7.10 fork):
- Fix empty FluidStacks rendering as full in fluid display widgets
- Fix ToggleButton backgroundOverlay overriding theme background
- Guard malformed scientific notation in evalex number parsing
- Fix NPE on null fluid icon
- Hide tooltips while a panel is dragged over widgets
- Add showSlotOverlay config option for item and fluid slots

From brachy84/ModularUI-Modern (1.20.1 fork):
- Fix hotbar swapping and throwing items from ModularContainer
- Fix shift-clicking into phantom slots voiding items
- Fix container closing dropping items on the block instead of player
- Log packet exceptions instead of discarding them
- Lock PanelSyncManager before sync handler init
- Guard client-only code paths on dedicated servers
- Keep JEI search bar focused from closing MUI panels

(cherry picked from commit 4a79726)

…MUI forks

From GTNH/ModularUI2 (1.7.10 fork):
- Fluid filter for FluidSlotSyncHandler
- Slot rendering hooks: stack amount override and getItemStackForRendering in ItemSlot
- Localized debug screen and configurable debug colors
- Per-row and per-column Grid alignment
- Click sound override for toggle/cycle buttons
- Scroll to change values in numeric text fields

From brachy84/ModularUI-Modern (1.20.1 fork):
- ShortValue/ShortSyncValue sync API
- findSyncHandlerOptional on ISyncRegistrar
- Nullable/Optional variants for findChildAt
- IntValue.Dynamic implements IDoubleValue
- Improved fluid slot amount display (getOrDefault overloads, SIPrefix/NumberFormat tweaks)
- CycleDrawable

Test:
- Add Text Field UI section to the diamond test GUI

(cherry picked from commit 30c2fa9)

…ements

- textfield/number-field improvements incl. integer grouping (NH #34/#101/#131/#145)
- progress drawables, drawable equals/hashCode, FlowDrawable spacing fix
- closing logic (#123)
- PanelManager.closeAll javadoc

…plicate upstream

Cherry-picks #194.

Adds empty-field guards, multiline paste fix, setText helpers and renderer cursor/mark bounds checks.