refactor: migrate ACP JSON-RPC to REST API with SSE #6

Job	Run time
typecheck	1m 3s
test-js	2m 14s
lint	57s
Rust tests (Linux)	8m 36s
Rust tests (Windows)	14m 51s
Rust tests (macOS)	3m 43s
Tauri build (${{ matrix.platform.name }})	0s
	31m 24s

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