Fix TSCM WiFi detection, SDR capabilities, layout, and correlation/cluster emission

- Use networksetup instead of deprecated airport utility for macOS WiFi detection
- Fix SDRDevice attribute access (use getattr instead of dict .get())
- Move Detected Threats panel next to RF Signals in 2-column grid
- Always run correlation/identity analysis at sweep end, even if stopped by user

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

templates/index.html

@@ -1557,7 +1557,7 @@
                         </div>
 
                         <!-- Threats Panel -->
-                        <div class="tscm-panel" id="tscmThreatPanel" style="grid-column: span 2;">
+                        <div class="tscm-panel" id="tscmThreatPanel">
                             <div class="tscm-panel-header">
                                 Detected Threats
                                 <span class="badge" id="tscmThreatCount">0</span>