Dev/optimise#1

Merged

Removable merged 13 commits intomasterfrom

Apr 23, 2026

Commits on Apr 23, 2026

feat: add usePageMetadata hook for document title and html lang sync
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feat: mount next-themes ThemeProvider and gate router devtools to DEV
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refactor: wire page metadata through usePageMetadata and drop dead state
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refactor: simplify LanguageSwitcher with single source of truth
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feat(web): add ThemeSwitcher with next-themes integration
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feat(web): make ip-info tool an external link card
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feat(web): host ThemeSwitcher in footer and tokenize footer colors
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fix(web): drop hardcoded tool names and support bilingual alias search
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fix(web): preview html via iframe srcDoc to eliminate blob url leak
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fix(web): chunk large uint8array when base64-encoding to avoid stack overflow
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chore(web): drop stray console.error and void clipboard writes in timestamp tool
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chore(web): remove dead App.tsx, react.svg, and unused npm deps
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docs: archive p0/p1 fix workflow after verification
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