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This reverts commit c445f43f8d.
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@@ -1,40 +0,0 @@
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/**
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* Terminal dark/light mode detection.
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*
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* Detection is based on the terminal's actual background color (queried via
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* OSC 11) rather than the OS appearance setting.
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*
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* Vendored from src/utils/systemTheme.ts for package independence.
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*/
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export type SystemTheme = 'dark' | 'light'
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let cachedSystemTheme: SystemTheme | undefined
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/**
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* Detect theme from $COLORFGBG environment variable (set by some terminals).
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*/
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function detectFromColorFgBg(): SystemTheme | undefined {
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const colorFgBg = process.env.COLORFGBG
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if (!colorFgBg) return undefined
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const parts = colorFgBg.split(';')
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if (parts.length < 2) return undefined
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const bg = parseInt(parts[parts.length - 1]!, 10)
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// Standard ANSI color indices: 0-7 are dark, 8-15 are bright/light
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if (isNaN(bg)) return undefined
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return bg >= 8 ? 'light' : 'dark'
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}
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/**
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* Get the current terminal theme. Cached after first detection.
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*/
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export function getSystemThemeName(): SystemTheme {
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if (cachedSystemTheme === undefined) {
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cachedSystemTheme = detectFromColorFgBg() ?? 'dark'
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}
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return cachedSystemTheme
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}
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export function setCachedSystemTheme(theme: SystemTheme): void {
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cachedSystemTheme = theme
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}
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