feat: update embed from hw.glich.co to scaleengineer.com

[RohitLakh]

Summary

• Replaced all hw.glich.co embed URLs with the canonical scaleengineer.com/embed/daily/dsa URL
• Simplified the DailyDSAEmbed component to only accept mobile and theme props, hardcoding the Scale Engineer URL internally
• Moved hydration-safe mounted state handling inside the component so consumers no longer need to manage it
• Cleaned up 25 content files across stack, queue, sorting, and searching visualizers — removing redundant props (src, mounted, desktopHeight, mobileHeight, linkHref, linkText, linkClassName, linkStyle)

Changes

• app/components/ui/DailyDSAEmbed.jsx — Simplified API to { mobile, theme }. Component is now "use client", manages its own mount state, and builds the iframe src from the theme prop.
• 25 content files — Replaced verbose <DailyDSAEmbed mounted={mounted} src={...} desktopHeight={400} ... /> calls with <DailyDSAEmbed mobile={false} theme={theme} /> (desktop) and <DailyDSAEmbed mobile theme={theme} /> (mobile). Removed unused mounted state from each file.

Result

• -1,402 lines of duplicated embed configuration removed
• Zero remaining references to hw.glich.co
• All embeds now consistently point to scaleengineer.com with proper dark/light theme support

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