feat: config from env #800

Job	Run time
Cargo fmt	19s
ECS simulation (ctimer fallback)	18s
Feature combinations	41s
Cargo clippy	33s
Trace Integrity & Analysis	2m 45s
Check docs.rs	6m 2s
Build (ubuntu-latest, nightly)	3m 28s
AddressSanitizer (perf-self-profile)	1m 0s
Build (macos-latest, nightly)	3m 13s
Build (ubuntu-24.04-arm, 1.94.1)	3m 50s
Build (ubuntu-latest, 1.94.1)	3m 18s
Build (macos-latest, 1.94.1)	3m 32s
Cargo package	2m 6s
Shuttle tests	1m 12s
Semver checks	5m 12s
CI Pass	4s
	37m 33s

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