fix(ci): satisfy current clippy lint

[yvgude]

Summary

• invert the Linux proxy-autostart port-release branch to satisfy the current Clippy if_not_else lint
• preserve existing behavior: start the systemd user service only after the port is released

Root cause

Rust 1.97 treats the previous negated condition with else as a denied warning. Both failing jobs compile this code; CI Green only aggregates their results.

Validation

• cargo fmt --check
• cargo clippy --all-features -- -D warnings
• cargo clippy -p lean-ctx-sdk --all-targets -- -D warnings

[ousatov-ua]

Hey @yvgude ! I've created a PR for Grok support. Tested on Super Grok (heavy) subscription.
#1016