Release v2.9.0 - iNTERCEPT rebrand and UI overhaul

- Rebrand from INTERCEPT to iNTERCEPT
- New logo design with 'i' and signal wave brackets
- Add animated landing page with "See the Invisible" tagline
- Fix tuning dial audio issues with debouncing and restart prevention
- Fix Listening Post scanner with proper signal hit logging
- Update setup script for apt-based Python package installation
- Add Instagram promo video template
- Add full-size logo assets for external use

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

static/css/satellite_dashboard.css

@@ -692,4 +692,36 @@ body {
     .controls-bar {
         grid-row: 4;
     }
+}
+
+/* Embedded Mode Styles */
+body.embedded {
+    background: transparent;
+    min-height: auto;
+}
+
+body.embedded .header {
+    background: rgba(10, 12, 16, 0.95);
+    border-bottom: 1px solid var(--border-color);
+}
+
+body.embedded .header .logo {
+    font-size: 14px;
+}
+
+body.embedded .header .logo span {
+    font-size: 10px;
+}
+
+body.embedded .dashboard {
+    padding: 10px;
+    gap: 10px;
+}
+
+body.embedded .panel {
+    background: rgba(15, 18, 24, 0.95);
+}
+
+body.embedded .controls-bar {
+    padding: 10px 15px;
 }