feat: support env vars in dev command #2041

Job	Run time
checks / readme-snippets	15s
checks / pre-commit	33s
checks / test (3.10, lowest-direct, windows-latest)	2m 47s
checks / test (3.11, lowest-direct, ubuntu-latest)	48s
checks / test (3.10, locked, windows-latest)	2m 35s
checks / test (3.11, locked, ubuntu-latest)	52s
checks / test (3.10, lowest-direct, ubuntu-latest)	53s
checks / test (3.10, locked, ubuntu-latest)	57s
checks / test (3.11, lowest-direct, windows-latest)	2m 43s
checks / test (3.14, locked, windows-latest)	3m 4s
checks / test (3.12, locked, windows-latest)	3m 14s
checks / test (3.13, lowest-direct, ubuntu-latest)	59s
checks / test (3.14, lowest-direct, windows-latest)	2m 21s
checks / test (3.13, locked, windows-latest)	2m 28s
checks / test (3.12, locked, ubuntu-latest)	59s
checks / test (3.13, lowest-direct, windows-latest)	2m 43s
checks / test (3.12, lowest-direct, windows-latest)	3m 33s
checks / test (3.14, locked, ubuntu-latest)	2m 19s
checks / test (3.11, locked, windows-latest)	2m 31s
checks / test (3.13, locked, ubuntu-latest)	48s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 17s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 1s
all-green	2s
	39m 42s

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