Revive garth: replace HTTP transport with Camoufox browser automation#225

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nrvim wants to merge 2 commits intomatin:mainfrom

nrvim:feat/camoufox-browser-transport

Commits on Mar 31, 2026

Replace HTTP transport with Camoufox browser automation
nrvim
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Address review feedback: fix mutable defaults, add try/finally cleanup, domain support, stricter cassette matching
nrvim
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