docs: mark Goal 7 complete

Agent-Logs-Url: https://github.com/bedaHovorka/interlockSim/sessions/a66e1723-36d6-4c44-8d1f-8ca5cd450ddc

Co-authored-by: bedaHovorka <5263405+bedaHovorka@users.noreply.github.com>

Author: Copilot

LONG_TERM_GOALS.md

@@ -209,6 +209,7 @@ Users can automatically collect key performance indicators during simulation inc
 **Category:** I: System Operations
 **Priority:** Critical
 **Development Estimate:** 1 month
+**Status:** ✅ COMPLETE
 
 **User Value:**
 Users can adjust simulation speed from slow motion (for detailed observation) to fast forward (for quick scenario completion). This provides flexibility for different use cases: slow for education, fast for research batch runs.