feat(acp): pre-warm session on connect and expose reasoning efforts #3

Job	Run time
test-js	2m 19s
lint	59s
typecheck	1m 6s
Rust tests (Linux)	8m 20s
Rust tests (macOS)	3m 40s
Rust tests (Windows)	12m 5s
Tauri build (${{ matrix.platform.name }})	0s
	28m 29s

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