Add three-tier deployment infrastructure

Platform pivot from Raspberry Pi to three-tier model:
- Tier 1: Bootable Debian Live USB for field reporters
- Tier 2: Docker/K8s org server for newsrooms
- Tier 3: Docker/K8s federation relay for VPS

Tier 1 — Live USB (deploy/live-usb/):
- build.sh: live-build based image builder for amd64
- Package list: Python + system deps + minimal GUI (openbox + Firefox)
- Install hook: creates venv, pip installs soosef[web,cli,attest,...]
- Hardening hook: disable swap/coredumps, UFW, auto-login to web UI
- systemd service with security hardening (NoNewPrivileges, ProtectSystem)
- Auto-opens Firefox kiosk to http://127.0.0.1:5000 on boot

Tier 2+3 — Docker (deploy/docker/):
- Multi-stage Dockerfile with two targets:
  - server: full web UI + stego + attestation + federation (Tier 2)
  - relay: lightweight FastAPI attestation API only (Tier 3)
- docker-compose.yml with both services and persistent volumes
- .dockerignore for clean builds

Kubernetes (deploy/kubernetes/):
- namespace.yaml, server-deployment.yaml, relay-deployment.yaml
- PVCs, services, health checks, resource limits
- Single-writer strategy (Recreate, not RollingUpdate) for SQLite safety
- README with architecture diagram and deployment instructions

Config presets (deploy/config-presets/):
- low-threat.json: press freedom country (no killswitch, 30min sessions)
- medium-threat.json: restricted press (48h deadman, USB monitoring)
- high-threat.json: conflict zone (12h deadman, tamper monitoring, 5min sessions)
- critical-threat.json: targeted surveillance (127.0.0.1 only, 6h deadman, 3min sessions)

Deployment guide rewritten for three-tier model with RPi as legacy appendix.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

deploy/live-usb/build.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+# Build a bootable Debian Live USB image with SooSeF pre-installed.
+#
+# Prerequisites:
+#   apt install live-build
+#
+# Usage:
+#   cd deploy/live-usb
+#   sudo ./build.sh
+#
+# Output: live-image-amd64.hybrid.iso (flash to USB with dd or Balena Etcher)
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SOOSEF_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
+
+echo "=== SooSeF Live USB Image Builder ==="
+echo "Source: $SOOSEF_ROOT"
+echo
+
+cd "$SCRIPT_DIR"
+
+# Clean previous builds
+lb clean 2>/dev/null || true
+
+# Configure live-build
+lb config \
+    --distribution bookworm \
+    --architectures amd64 \
+    --binary-images iso-hybrid \
+    --memtest none \
+    --bootappend-live "boot=live components locales=en_US.UTF-8 keyboard-layouts=us" \
+    --apt-indices false \
+    --security true \
+    --updates true
+
+# Build
+echo "Building image (this takes 10-20 minutes)..."
+lb build
+
+echo
+echo "=== Build complete ==="
+echo "Image: $(ls -lh live-image-*.iso 2>/dev/null || echo 'Check for .iso file')"
+echo
+echo "Flash to USB:"
+echo "  sudo dd if=live-image-amd64.hybrid.iso of=/dev/sdX bs=4M status=progress"
+echo "  (replace /dev/sdX with your USB device)"

deploy/live-usb/config/hooks/live/0100-install-soosef.hook.chroot

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+#!/bin/bash
+# Install SooSeF and all dependencies into the live image.
+# This runs inside the chroot during image build.
+set -euo pipefail
+
+echo "=== Installing SooSeF ==="
+
+# Create soosef user
+useradd -m -s /bin/bash -G sudo soosef
+echo "soosef:soosef" | chpasswd
+
+# Create virtual environment
+python3 -m venv /opt/soosef-env
+source /opt/soosef-env/bin/activate
+
+# Install soosef with all extras (pre-built wheels from PyPI)
+pip install --no-cache-dir "soosef[web,cli,attest,stego-dct,stego-audio,fieldkit]"
+
+# Verify installation
+python3 -c "import soosef; print(f'SooSeF {soosef.__version__} installed')"
+python3 -c "from soosef.stegasoo import encode; print('stegasoo OK')"
+python3 -c "from soosef.verisoo import Attestation; print('verisoo OK')"
+
+deactivate
+
+echo "=== SooSeF installation complete ==="

deploy/live-usb/config/hooks/live/0200-harden.hook.chroot

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+#!/bin/bash
+# Security hardening for the live image.
+set -euo pipefail
+
+echo "=== Applying security hardening ==="
+
+# Disable core dumps (Python doesn't zero memory — core dumps leak keys)
+echo "* hard core 0" >> /etc/security/limits.conf
+echo "fs.suid_dumpable = 0" >> /etc/sysctl.d/99-soosef.conf
+echo "kernel.core_pattern=|/bin/false" >> /etc/sysctl.d/99-soosef.conf
+
+# Disable swap (keys persist in swap pages)
+systemctl mask swap.target || true
+echo "vm.swappiness = 0" >> /etc/sysctl.d/99-soosef.conf
+
+# Enable UFW with deny-all + allow web UI
+ufw default deny incoming
+ufw default allow outgoing
+ufw allow 5000/tcp comment "SooSeF Web UI"
+ufw allow 22/tcp comment "SSH"
+ufw --force enable || true
+
+# Disable unnecessary services
+systemctl disable bluetooth.service 2>/dev/null || true
+systemctl disable avahi-daemon.service 2>/dev/null || true
+systemctl disable cups.service 2>/dev/null || true
+
+# Enable SooSeF service
+systemctl enable soosef.service
+
+# Auto-login to openbox (so the browser opens without login prompt)
+mkdir -p /etc/lightdm/lightdm.conf.d
+cat > /etc/lightdm/lightdm.conf.d/50-autologin.conf << 'EOF'
+[Seat:*]
+autologin-user=soosef
+autologin-user-timeout=0
+EOF
+
+echo "=== Hardening complete ==="

deploy/live-usb/config/includes.chroot/etc/systemd/system/soosef.service

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+[Unit]
+Description=SooSeF Security Fieldkit
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+User=soosef
+Group=soosef
+WorkingDirectory=/home/soosef
+Environment=PATH=/opt/soosef-env/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+Environment=SOOSEF_DATA_DIR=/home/soosef/.soosef
+ExecStartPre=/opt/soosef-env/bin/soosef init --no-identity --no-channel
+ExecStart=/opt/soosef-env/bin/soosef serve --host 0.0.0.0 --no-https
+Restart=on-failure
+RestartSec=5
+
+# Security hardening
+NoNewPrivileges=yes
+ProtectSystem=strict
+ProtectHome=read-only
+ReadWritePaths=/home/soosef/.soosef
+PrivateTmp=yes
+ProtectKernelTunables=yes
+ProtectControlGroups=yes
+
+[Install]
+WantedBy=multi-user.target

deploy/live-usb/config/includes.chroot/etc/xdg/openbox/autostart

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+# SooSeF Live USB — auto-open web UI in Firefox
+# Wait for the SooSeF server to start, then open the browser
+sleep 5
+firefox-esr --kiosk http://127.0.0.1:5000 &

deploy/live-usb/config/package-lists/soosef.list.chroot

@@ -0,0 +1,41 @@
+## System essentials
+python3
+python3-pip
+python3-venv
+python3-dev
+
+## Build dependencies for Python packages with C extensions
+libjpeg62-turbo-dev
+zlib1g-dev
+libffi-dev
+libssl-dev
+gfortran
+libopenblas-dev
+
+## SooSeF runtime dependencies
+gpsd
+gpsd-clients
+cryptsetup
+ufw
+shred
+
+## Useful tools
+curl
+wget
+git
+htop
+usbutils
+pciutils
+
+## GUI (minimal — just a browser for the web UI)
+xorg
+openbox
+firefox-esr
+lightdm
+
+## Firmware for common laptop hardware
+firmware-linux-free
+firmware-misc-nonfree
+firmware-iwlwifi
+firmware-realtek
+firmware-atheros