JLH Framework linner

Adds configurable linear progression support for JLH Framework missions. This addon limits how many capture objectives can be active at once, helping reduce early-game AI load and keeping the frontline focused. Bases are opened in progression order by sector, with radio availability respected, so players must advance through the map rather than capturing every point at once. Features: Configurable maximum active capture bases via JSON Default limit: 4 active capture bases Sector-based map progression from the starting HQ/MOB side Only radio-reachable US attack targets are opened Closed bases do not show seize/capture markers Closed bases do not spawn base patrol or vehicle AI Capturing a base or changing radio coverage refreshes available objectives Ambience scales by sector: active sector full, next sector reduced, later sectors off Existing supplies and respawn behavior are left untouched Config file: $profile:JLHLinearProgression/JLH_LinearProgression.json