fix(mcp): security hardening (#54) #404

Job	Run time
Hooks	35s
Lint	3m 31s
E2E tests (OTP 27.3 \| Elixir 1.18.4)	1m 0s
Installer tests (OTP 26.2.5.2 \| Elixir 1.17.3)	28s
E2E tests (OTP 28.0.1 \| Elixir 1.18.4)	1m 12s
Installer tests (OTP 28.0.1 \| Elixir 1.18.4)	36s
Integration tests (OTP 28.0.1 \| Elixir 1.18.4)	4m 8s
Unit tests (OTP 26.2.5.2 \| Elixir 1.17.3)	29s
Installer tests (OTP 27.3 \| Elixir 1.18.4)	34s
E2E tests (OTP 26.2.5.2 \| Elixir 1.17.3)	1m 15s
Unit tests (OTP 27.3 \| Elixir 1.18.4)	40s
Integration tests (OTP 26.2.5.2 \| Elixir 1.17.3)	4m 7s
Integration tests (OTP 27.3 \| Elixir 1.18.4)	4m 7s
Unit tests (OTP 28.0.1 \| Elixir 1.18.4)	25s
Installer tests (OTP 26.2.5.2 \| Elixir 1.17.3)	34s
Installer tests (OTP 28.0.1 \| Elixir 1.18.4)	26s
Hooks	43s
Integration tests (OTP 26.2.5.2 \| Elixir 1.17.3)	57m 5s
E2E tests (OTP 26.2.5.2 \| Elixir 1.17.3)	45m 34s
Unit tests (OTP 26.2.5.2 \| Elixir 1.17.3)	26s
Installer tests (OTP 27.3 \| Elixir 1.18.4)	28s
Unit tests (OTP 27.3 \| Elixir 1.18.4)	40s
E2E tests (OTP 28.0.1 \| Elixir 1.18.4)	41m 1s
E2E tests (OTP 27.3 \| Elixir 1.18.4)	45m 25s
Integration tests (OTP 27.3 \| Elixir 1.18.4)	56m 55s
Integration tests (OTP 28.0.1 \| Elixir 1.18.4)	48m 45s
Lint	3m 50s
Unit tests (OTP 28.0.1 \| Elixir 1.18.4)	24s
	5h 25m 23s

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