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app.py

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+"""
+VALIS — Variable Arrived Location In Superposition
+Built for the Build Small Hackathon 2026.
+
+A peer-to-peer mesh network on $10 microcontrollers.
+Messages don't exist in transit. It's a walkie-talkie with math.
+"""
+
+import gradio as gr
+import os
+import secrets
+
+# === MEILONG SCATTER PROTOCOL ===
+
+def xor_bytes(a, b):
+    return bytes(x ^ y for x, y in zip(a, b))
+
+
+def scatter(message):
+    """Split a message into 3 XOR shares. Any 1 or 2 = noise. All 3 = message."""
+    data = message.encode('utf-8')
+    share1 = secrets.token_bytes(len(data))
+    share2 = secrets.token_bytes(len(data))
+    share3 = xor_bytes(xor_bytes(data, share1), share2)
+    return share1, share2, share3
+
+
+def reassemble(s1, s2, s3):
+    """Reassemble 3 XOR shares back into the original message."""
+    return xor_bytes(xor_bytes(s1, s2), s3).decode('utf-8')
+
+
+def demo_scatter(message):
+    """Interactive Meilong scatter demo."""
+    if not message or not message.strip():
+        return "", "", "", "", "", ""
+
+    s1, s2, s3 = scatter(message)
+
+    # Show shares as hex (proving they're noise)
+    hex1 = s1.hex()
+    hex2 = s2.hex()
+    hex3 = s3.hex()
+
+    # Try to "read" individual shares (you can't)
+    try:
+        attempt1 = s1.decode('utf-8', errors='replace')
+    except:
+        attempt1 = "[binary noise]"
+    try:
+        attempt2 = s2.decode('utf-8', errors='replace')
+    except:
+        attempt2 = "[binary noise]"
+
+    # Reassemble
+    recovered = reassemble(s1, s2, s3)
+
+    # Stats
+    stats = f"Original: {len(message)} bytes\nEach share: {len(s1)} bytes\nShares are random: share1 and share2 are crypto-random, share3 = message XOR share1 XOR share2\nIntercept 1 share: random noise\nIntercept 2 shares: random noise\nAll 3 shares: message recovers perfectly"
+
+    return hex1[:80] + "...", hex2[:80] + "...", hex3[:80] + "...", recovered, f"Decoded share 1 alone: {attempt1[:60]}...\nDecoded share 2 alone: {attempt2[:60]}...\n\nMeaningless. The message doesn't exist until all three arrive.", stats
+
+
+def demo_tamper(message, tampered_char):
+    """Show what happens when you tamper with a share."""
+    if not message or not message.strip():
+        return "Enter a message first."
+
+    s1, s2, s3 = scatter(message)
+
+    # Tamper with share 2 — flip one byte
+    s2_tampered = bytearray(s2)
+    if len(s2_tampered) > 0:
+        pos = len(s2_tampered) // 2
+        s2_tampered[pos] = s2_tampered[pos] ^ 0xFF
+    s2_tampered = bytes(s2_tampered)
+
+    # Try to reassemble with tampered share
+    try:
+        corrupted = xor_bytes(xor_bytes(s1, s2_tampered), s3).decode('utf-8', errors='replace')
+    except:
+        corrupted = "[decode failed]"
+
+    original = reassemble(s1, s2, s3)
+
+    return f"Original message: {original}\n\nTampered reassembly: {corrupted}\n\nOne flipped byte in one share = garbage output.\nThe dragon knows when someone touched the shares."
+
+
+# === CSS ===
+CUSTOM_CSS = """
+@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&display=swap');
+
+.gradio-container {
+    background: #0a0a12 !important;
+    max-width: 900px !important;
+    margin: 0 auto !important;
+}
+.gr-button-primary {
+    background: #00d4ff !important; color: #0a0a12 !important;
+    border: none !important; font-family: 'JetBrains Mono', monospace !important;
+    font-weight: bold !important;
+}
+.gr-button-primary:hover { background: #00b8e0 !important; }
+footer { display: none !important; }
+"""
+
+SPEC_MD = """
+## Protocol Stack
+```
+Layer 5: VALIS Application    — Meilong scatter (3 XOR shares, 3 routes)
+Layer 4: Identity             — Presence-based (no accounts, no IP, no identity)
+Layer 3: Mesh Routing         — 802.15.4 mesh, multi-hop, self-healing
+Layer 2: Transport            — Zigbee / Thread / Wi-SUN (open standards)
+Layer 1: Physical             — 2.4GHz ISM band (license-free worldwide)
+```
+
+## Hardware Per Node
+
+| Component | Spec | Cost |
+|-----------|------|------|
+| ESP32-C6 or ESP32-H2 | Zigbee/Thread/802.15.4 + WiFi + BLE | $8 |
+| USB-C cable | Powered by any outlet or battery bank | $0 |
+| Enclosure | 3D printed or bare board | $2 |
+| **Total** | | **$10** |
+
+100 nodes = $1,000 (a neighborhood). 1,000 nodes = $10,000 (a town). The electrical grid already wired the topology.
+
+## Security Model
+
+| Attack | Result |
+|--------|--------|
+| **Intercept a message** | Can't. Message doesn't exist in transit. Three shares of noise on three paths. |
+| **Identify a user** | Can't. No user identities. Nodes are anonymous. |
+| **Shut down the network** | Can't. No server to kill. No domain to seize. Every node is independent. Kill one, traffic reroutes. |
+| **Block the frequency** | Illegal. 2.4GHz ISM is protected by international treaty. Jamming also kills WiFi and baby monitors. |
+| **Regulate it** | Regulate what? Open hardware, open protocols, license-free spectrum. It's a walkie-talkie with math. |
+
+## vs. The Internet
+
+| Feature | Internet | VALIS |
+|---------|----------|-------|
+| Requires ISP | Yes | No |
+| Central servers | Yes | No |
+| Can be censored | Yes | No |
+| Can be surveilled | Yes | No |
+| Requires identity | Yes | No |
+| Can be shut down | Yes | No |
+| Cost per node | $50-100/mo | $10 one time |
+| Who owns it | Corporations | Nobody |
+"""
+
+POWERLINE_MD = """
+## Power Line Communication — The Part Nobody Will Believe
+
+Smart meters already send data through the electrical grid. This is not theory. It's deployed in millions of homes right now. The protocol is called G3-PLC / PRIME / IEEE 1901.2.
+
+**The insight:** Transformers don't destroy signals — they transform them at known, predictable ratios.
+
+### Grid Harmonics as Communication Channels
+
+The electrical grid runs at 60Hz (US) / 50Hz (EU). But the wire carries harmonics:
+- **120Hz** — 2nd harmonic
+- **180Hz** — 3rd harmonic
+- **240Hz** — 4th harmonic
+- **300Hz** — 5th harmonic
+
+These harmonics are *unused bandwidth*. They're considered noise by the power company. But noise is just a signal nobody's listening to.
+
+### The Resonance Angle
+
+Every wire has a resonant frequency determined by its length, gauge, and impedance. A VALIS node could:
+
+1. **Listen** to the power line's harmonic signature (passive, legal, like tuning a radio)
+2. **Inject** a tiny modulated signal on an unused harmonic (like power-line Ethernet, already legal)
+3. **Relay** data through the grid wiring itself — no radio needed, no spectrum needed
+
+The grid becomes the mesh. Every outlet is a node. The wiring is already there.
+
+### 7.83Hz — The Schumann Resonance
+
+The Earth-ionosphere cavity resonates at 7.83Hz. Tesla knew this. It's the frequency of the planet itself.
+
+At this frequency:
+- Signal propagates through the ground
+- Wavelength = ~38,000 km (circumference of Earth)
+- Extremely low power can travel extremely far
+- Already used by submarines for communication
+
+A VALIS node could use Schumann resonance as a *heartbeat* — a presence signal that says "I'm here" without carrying data. The data travels on the grid harmonics. The heartbeat travels through the planet.
+
+### Why This Works
+
+Power Line Communication is already FCC-approved, already deployed, already proven. VALIS just:
+1. Uses open frequencies the power company considers noise
+2. Adds Meilong scatter so the data is meaningless in transit
+3. Adds mesh routing so there's no center to attack
+
+The grid is the largest mesh network ever built. It just doesn't know it yet.
+"""
+
+# === APP ===
+with gr.Blocks(css=CUSTOM_CSS, title="VALIS", theme=gr.themes.Base()) as app:
+
+    gr.HTML("""
+    <div style="text-align:center; padding: 24px 0 8px;">
+        <h1 style="font-family: 'JetBrains Mono', monospace; color: #00d4ff; font-size: 2.8em; letter-spacing: 0.2em;">
+            VALIS
+        </h1>
+        <p style="font-family: 'JetBrains Mono', monospace; color: #444; font-size: 0.8em; letter-spacing: 0.1em;">
+            Variable Arrived Location In Superposition
+        </p>
+        <p style="font-family: 'JetBrains Mono', monospace; color: #333; font-size: 0.65em; max-width: 500px; margin: 8px auto;">
+            Peer-to-peer mesh network. $10 nodes. Messages don't exist in transit.
+            No server. No company. No identity. It's a walkie-talkie with math.
+        </p>
+    </div>
+    """)
+
+    with gr.Tabs():
+
+        with gr.TabItem("Meilong Scatter Demo"):
+            gr.Markdown("### Type a message. Watch it shatter into noise. Watch it reassemble.")
+            msg_input = gr.Textbox(label="Your message", placeholder="The dragon sleeps between the nodes.", lines=2)
+
+            scatter_btn = gr.Button("SCATTER", variant="primary", size="lg")
+
+            with gr.Row():
+                share1 = gr.Textbox(label="Share 1 (hex)", interactive=False)
+                share2 = gr.Textbox(label="Share 2 (hex)", interactive=False)
+                share3 = gr.Textbox(label="Share 3 (hex)", interactive=False)
+
+            recovered = gr.Textbox(label="Reassembled (all 3 shares combined)", interactive=False)
+            intercept = gr.Textbox(label="What happens if you intercept 1-2 shares", lines=4, interactive=False)
+            stats = gr.Textbox(label="Stats", lines=5, interactive=False)
+
+            scatter_btn.click(
+                fn=demo_scatter,
+                inputs=[msg_input],
+                outputs=[share1, share2, share3, recovered, intercept, stats],
+            )
+
+            gr.Markdown("### Tamper Detection")
+            gr.Markdown("What happens when someone modifies a share in transit?")
+            tamper_msg = gr.Textbox(label="Message to tamper with", placeholder="Try to break this", lines=1)
+            tamper_btn = gr.Button("SCATTER + TAMPER", variant="primary")
+            tamper_result = gr.Textbox(label="Result", lines=5, interactive=False)
+
+            tamper_btn.click(
+                fn=demo_tamper,
+                inputs=[tamper_msg, gr.Textbox(visible=False, value="x")],
+                outputs=[tamper_result],
+            )
+
+        with gr.TabItem("Architecture"):
+            gr.Markdown(SPEC_MD)
+
+        with gr.TabItem("Power Line Communication"):
+            gr.Markdown(POWERLINE_MD)
+
+        with gr.TabItem("Build a Node"):
+            gr.Markdown("""
+## Build One Right Now
+
+**Parts:**
+- 1x ESP32-C6 DevKit — $8 (Amazon, AliExpress, Adafruit)
+- 1x USB-C cable — $2 or use one you have
+
+**Total: $10**
+
+Plug it into any outlet. It joins the mesh. That's it.
+
+### At Scale
+- 100 nodes = $1,000 (a neighborhood)
+- 1,000 nodes = $10,000 (a town)
+- 10,000 nodes = $100,000 (a city)
+- The electrical grid already wired the topology. We just add brains.
+
+### What It's For
+- Messaging that can't be intercepted or censored
+- Community networks that don't need an ISP
+- Emergency communication when internet goes down
+- IoT mesh that doesn't phone home to corporate servers
+- Protests, journalism, activism in hostile environments
+
+### What It's NOT For
+- Streaming Netflix
+- Social media
+- Anything requiring high bandwidth
+- Crime (the network is ownerless but the law still applies to people)
+
+### The Rule
+There is no company. There is no board. There is no token. There is no foundation.
+There is a $10 device and a document that tells you how to build one.
+The children of Philadelphia get the rest.
+""")
+
+    gr.HTML("""
+    <div style="text-align:center; padding: 16px 0 4px; color: #333; font-size: 0.65em; font-family: 'JetBrains Mono', monospace; line-height: 1.8;">
+        No model needed. Pure math. Meilong scatter: 3 XOR shares, 3 routes, zero trust required.<br>
+        <span style="color:#00d4ff;">Heuremen — Build Small Hackathon 2026</span><br>
+        <span style="color:#333; font-style: italic;">"The dragon sleeps between the nodes."</span>
+    </div>
+    """)
+
+if __name__ == "__main__":
+    app.launch()