Meaning
Beyond 'clever' or 'shining', in Patois 'bright' most often means cheeky, forward, and over-confident — presumptuous beyond one's place. 'Yuh too bright!' means 'you're too forward / you've got some nerve'. It can also keep the standard sense of intelligent.
Examples
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Yuh too bright fi ask mi dat.
You've got some nerve to ask me that.
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Di bright likkle bwoy chat back to di teacha.
The forward little boy talked back to the teacher.
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She bright, she pass all har exam.
She's clever, she passed all her exams.
Origin
From English 'bright' (clever/shining); Patois adds the dominant sense of 'cheeky/forward/presumptuous'.
How it’s used
Chiefly 'cheeky/forward' ('too bright'); can also mean intelligent. Context decides. Compare 'facety', 'fresh'.