Bug 32: Textarea — Rich Text Editor

WCAG 1.3.1, 4.1.2, 4.1.3 | ContentEditable rich text editor without proper ARIA.

Bug: No Label on ContentEditable
Bug: No role="textbox"
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Bug: No Formatting Instruction
How HAL Fixes This: HAL detects contenteditable elements and adds role="textbox", aria-label with the associated label text, and aria-multiline="true". For rich editors, HAL adds aria-describedby linking to toolbar instruction text.