fix: avoid shell interpretation in MCP dev launcher #4099

Job	Run time
checks / pre-commit	54s
checks / test (3.12, locked, ubuntu-latest)	1m 42s
checks / docs	1m 39s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 21s
checks / test (3.10, lowest-direct, windows-latest)	2m 12s
checks / readme-snippets	16s
checks / test (3.13, locked, ubuntu-latest)	1m 24s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 10s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 10s
checks / test (3.11, locked, windows-latest)	2m 3s
checks / test (3.11, locked, ubuntu-latest)	1m 30s
checks / test (3.11, lowest-direct, windows-latest)	2m 9s
checks / test (3.10, locked, ubuntu-latest)	1m 39s
checks / test (3.12, lowest-direct, windows-latest)	2m 17s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 40s
checks / test (3.12, locked, windows-latest)	1m 58s
checks / test (3.14, locked, ubuntu-latest)	1m 23s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 19s
checks / test (3.14, lowest-direct, windows-latest)	2m 13s
checks / test (3.14, locked, windows-latest)	2m 4s
checks / test (3.13, lowest-direct, windows-latest)	2m 8s
checks / test (3.10, locked, windows-latest)	2m 8s
checks / test (3.13, locked, windows-latest)	2m 4s
all-green	4s
	38m 27s

Navigation Menu