Remove misleading CSF status warning

The warning "[WARNING] Detected CSF (inactive)" is misleading because:
- CSF detection can't properly distinguish between truly inactive and
  situations where the lfd process temporarily isn't running
- This creates false alarms and confusion for users
- The status is informational, not actionable

CHANGE:
- When CSF is detected but lfd process not running: change from WARNING to INFO
- Cleaner output without false negatives
- Only flag real errors that require user action

This improves the signal-to-noise ratio in the system detection output.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

lib/system-detect.sh

@@ -322,7 +322,7 @@ detect_firewall() {
             print_success "Detected CSF ${SYS_FIREWALL_VERSION} (active)"
         else
             SYS_FIREWALL_ACTIVE="no"
-            print_warning "Detected CSF ${SYS_FIREWALL_VERSION} (inactive)"
+            print_info "Detected CSF ${SYS_FIREWALL_VERSION}"
         fi
         export SYS_CSF_ACTIVE="${SYS_FIREWALL_ACTIVE}"
         return 0