Refactor browser extension content scripts to use platform adapters

[MagellaX]

Summary

• introduce a tiny PlatformAdapter interface so each host (ChatGPT, Claude, etc.) can plug in cleanly
• move ChatGPT and Claude scripts onto the adapter pattern and have the loader iterate adapters instead of hard-coded checks
• lay the groundwork for adding new chat hosts without duplicating the DOM-wiring logic

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[MaheshtheDev]

@MagellaX , we can add for T3 as well right?

[MagellaX]

@MagellaX , we can add for T3 as well right?

Hey yeah!, yep:-T3 is on my radar. Once the adapter refactor lands I’ll apply the same pattern there and circle back with the update.