Update PARITY.md: add CheckBox and DateTimeInput to implemented components

Author: lukasmoschitz

renderers/react/visual-parity/PARITY.md

@@ -238,6 +238,8 @@ Each Lit component with `static styles` needs a corresponding entry in `componen
 | **Image** | `image.ts` | `:host`, `img` | All usage hints pass 0% |
 | **Slider** | `slider.ts` | `:host`, `input[type="range"]` | Basic slider passes 0% |
 | **Tabs** | `tabs.ts` | `:host`, `section`, `button` | All fixtures pass 0% |
+| **CheckBox** | `checkbox.ts` | `:host`, `input` | Works via path binding |
+| **DateTimeInput** | `datetime-input.ts` | `:host`, `input` | React uses HTML5 inputs directly |
 
 ### 🔄 Need Investigation
 
@@ -253,7 +255,7 @@ Each Lit component with `static styles` needs a corresponding entry in `componen
 |-----------|----------|-------|
 | **Slider** | `slider.ts` | Value does not update when slider moves |
 | **Divider** | `divider.ts` | Ignores `axis` property - always renders same orientation |
-| **CheckBox** | `checkbox.ts` | Uses `.value` instead of `.checked` (line 100), so checked state never displays. Also checks `literalBoolean` (line 110), so `false` values cause component to not render - only works via path binding. |
+| **CheckBox** | `checkbox.ts` | Uses `.value` instead of `.checked` (line 100), so checked state only displays correctly when using path binding. Using `literalBoolean` with `false` causes component to not render. Visual parity tests pass using path binding. |
 | **DateTimeInput** | `datetime-input.ts` | Uses `getMonth()` which is 0-indexed (0-11) without adding 1, causing issues in January and one month off otherwise. Also parses all values through `new Date()` constructor which does not accept time-only strings. React uses HTML5 inputs directly as they match A2UI format. |
 | **MultipleChoice** | `multiple-choice.ts` | React uses radio/checkbox inputs, Lit uses `<select>` dropdown. Skipped in visual parity tests. |