feat: add OpenCode restart notice for config changes #57

Job	Run time
lint	30s
typecheck	30s
Rust tests (Windows)	12m 46s
Rust tests (Linux)	3m 19s
test-js	1m 54s
Rust tests (macOS)	1m 27s
Tauri build (${{ matrix.platform.name }})	0s
	20m 26s

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