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/img/intercept-logo-dark.svg

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="512" height="512" viewBox="0 0 100 100" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <!-- iNTERCEPT Logo - Signal Intelligence Platform (Dark Background Version) -->
+
+    <!-- Dark background -->
+    <rect width="100" height="100" fill="#0a0a0f"/>
+
+    <!-- Subtle grid pattern -->
+    <defs>
+        <pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse">
+            <path d="M 10 0 L 0 0 0 10" fill="none" stroke="#1a1a2e" stroke-width="0.5"/>
+        </pattern>
+    </defs>
+    <rect width="100" height="100" fill="url(#grid)"/>
+
+    <!-- Outer glow effect -->
+    <defs>
+        <filter id="glow" x="-50%" y="-50%" width="200%" height="200%">
+            <feGaussianBlur stdDeviation="2" result="coloredBlur"/>
+            <feMerge>
+                <feMergeNode in="coloredBlur"/>
+                <feMergeNode in="SourceGraphic"/>
+            </feMerge>
+        </filter>
+    </defs>
+
+    <g filter="url(#glow)">
+        <!-- Signal brackets - left side (signal waves emanating) -->
+        <path d="M15 30 Q5 50, 15 70" stroke="#00d4ff" stroke-width="3" fill="none" stroke-linecap="round" opacity="0.5"/>
+        <path d="M22 35 Q14 50, 22 65" stroke="#00d4ff" stroke-width="2.5" fill="none" stroke-linecap="round" opacity="0.7"/>
+        <path d="M29 40 Q23 50, 29 60" stroke="#00d4ff" stroke-width="2" fill="none" stroke-linecap="round"/>
+
+        <!-- Signal brackets - right side (signal waves emanating) -->
+        <path d="M85 30 Q95 50, 85 70" stroke="#00d4ff" stroke-width="3" fill="none" stroke-linecap="round" opacity="0.5"/>
+        <path d="M78 35 Q86 50, 78 65" stroke="#00d4ff" stroke-width="2.5" fill="none" stroke-linecap="round" opacity="0.7"/>
+        <path d="M71 40 Q77 50, 71 60" stroke="#00d4ff" stroke-width="2" fill="none" stroke-linecap="round"/>
+
+        <!-- The 'i' letter - center element -->
+        <!-- dot of i (green accent - represents active signal) -->
+        <circle cx="50" cy="22" r="6" fill="#00ff88"/>
+
+        <!-- stem of i with styled terminals -->
+        <rect x="44" y="35" width="12" height="45" rx="2" fill="#00d4ff"/>
+
+        <!-- top terminal bar -->
+        <rect x="38" y="35" width="24" height="4" rx="1" fill="#00d4ff"/>
+
+        <!-- bottom terminal bar -->
+        <rect x="38" y="76" width="24" height="4" rx="1" fill="#00d4ff"/>
+    </g>
+</svg>

static/img/intercept-logo.svg

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="512" height="512" viewBox="0 0 100 100" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <!-- iNTERCEPT Logo - Signal Intelligence Platform -->
+
+    <!-- Signal brackets - left side (signal waves emanating) -->
+    <path d="M15 30 Q5 50, 15 70" stroke="#00d4ff" stroke-width="3" fill="none" stroke-linecap="round" opacity="0.5"/>
+    <path d="M22 35 Q14 50, 22 65" stroke="#00d4ff" stroke-width="2.5" fill="none" stroke-linecap="round" opacity="0.7"/>
+    <path d="M29 40 Q23 50, 29 60" stroke="#00d4ff" stroke-width="2" fill="none" stroke-linecap="round"/>
+
+    <!-- Signal brackets - right side (signal waves emanating) -->
+    <path d="M85 30 Q95 50, 85 70" stroke="#00d4ff" stroke-width="3" fill="none" stroke-linecap="round" opacity="0.5"/>
+    <path d="M78 35 Q86 50, 78 65" stroke="#00d4ff" stroke-width="2.5" fill="none" stroke-linecap="round" opacity="0.7"/>
+    <path d="M71 40 Q77 50, 71 60" stroke="#00d4ff" stroke-width="2" fill="none" stroke-linecap="round"/>
+
+    <!-- The 'i' letter - center element -->
+    <!-- dot of i (green accent - represents active signal) -->
+    <circle cx="50" cy="22" r="6" fill="#00ff88"/>
+
+    <!-- stem of i with styled terminals -->
+    <rect x="44" y="35" width="12" height="45" rx="2" fill="#00d4ff"/>
+
+    <!-- top terminal bar -->
+    <rect x="38" y="35" width="24" height="4" rx="1" fill="#00d4ff"/>
+
+    <!-- bottom terminal bar -->
+    <rect x="38" y="76" width="24" height="4" rx="1" fill="#00d4ff"/>
+</svg>