feat(server): add Cloudflare WSS remote backend flow #1637

Job	Run time
lint	20s
typecheck	26s
test-js	1m 10s
Rust tests (Linux)	1m 48s
Rust tests (Windows)	5m 9s
Rust tests (macOS)	1m 27s
Tauri build (${{ matrix.platform.name }})	-1s
	10m 19s

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