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/docker/.dockerignore

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+.git
+.claude
+__pycache__
+*.pyc
+.coverage
+.pytest_cache
+docs
+deploy/live-usb
+test_data
+*.egg-info

deploy/docker/Dockerfile

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+# SooSeF Federation Server
+# Multi-stage build for minimal image size.
+#
+# Tier 2: Org server (full features — web UI, attestation, federation, stego)
+#   docker build -t soosef-server .
+#   docker run -v soosef-data:/data -p 5000:5000 -p 8000:8000 soosef-server
+#
+# Tier 3: Federation relay (attestation + federation only, no stego, no web UI)
+#   docker build --target relay -t soosef-relay .
+#   docker run -v relay-data:/data -p 8000:8000 soosef-relay
+
+# === Stage 1: Build dependencies ===
+FROM python:3.12-slim-bookworm AS builder
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    gcc g++ gfortran \
+    libjpeg62-turbo-dev zlib1g-dev libffi-dev libssl-dev \
+    libopenblas-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /build
+COPY . .
+
+# Install into a virtual environment for clean copying
+RUN python -m venv /opt/soosef-env \
+    && /opt/soosef-env/bin/pip install --no-cache-dir \
+       ".[web,cli,attest,stego-dct,api,federation]"
+
+# === Stage 2: Federation relay (minimal) ===
+FROM python:3.12-slim-bookworm AS relay
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libjpeg62-turbo libopenblas0 \
+    && rm -rf /var/lib/apt/lists/* \
+    && useradd -m -s /bin/bash soosef
+
+COPY --from=builder /opt/soosef-env /opt/soosef-env
+
+ENV PATH="/opt/soosef-env/bin:$PATH" \
+    SOOSEF_DATA_DIR=/data \
+    PYTHONUNBUFFERED=1
+
+VOLUME /data
+EXPOSE 8000
+
+USER soosef
+
+# Federation relay: only the verisoo API with federation endpoints
+CMD ["uvicorn", "soosef.verisoo.api:app", "--host", "0.0.0.0", "--port", "8000"]
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s \
+    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')"
+
+# === Stage 3: Full org server ===
+FROM python:3.12-slim-bookworm AS server
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libjpeg62-turbo libopenblas0 \
+    && rm -rf /var/lib/apt/lists/* \
+    && useradd -m -s /bin/bash soosef
+
+COPY --from=builder /opt/soosef-env /opt/soosef-env
+
+# Copy frontend templates and static assets
+COPY frontends/ /opt/soosef-env/lib/python3.12/site-packages/frontends/
+
+ENV PATH="/opt/soosef-env/bin:$PATH" \
+    SOOSEF_DATA_DIR=/data \
+    PYTHONUNBUFFERED=1
+
+VOLUME /data
+EXPOSE 5000 8000
+
+USER soosef
+
+# Init on first run, then start web UI + federation API
+CMD ["sh", "-c", "soosef init 2>/dev/null; soosef serve --host 0.0.0.0 --no-https"]
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s \
+    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:5000/health')"

deploy/docker/docker-compose.yml

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+# SooSeF Docker Compose — Three-Tier Deployment
+#
+# Tier 2 (Org Server): Full web UI + attestation + federation
+# Tier 3 (Federation Relay): Lightweight attestation API only
+#
+# Usage:
+#   Full org server:       docker compose up server
+#   Federation relay only: docker compose up relay
+#   Both (e.g., testing):  docker compose up
+
+services:
+  # === Tier 2: Organizational Server ===
+  # Full SooSeF instance with web UI, stego, attestation, federation.
+  # Deploy on a mini PC in the newsroom or a trusted VPS.
+  server:
+    build:
+      context: ../..
+      dockerfile: deploy/docker/Dockerfile
+      target: server
+    ports:
+      - "5000:5000"   # Web UI (Flask/Waitress)
+      - "8000:8000"   # Federation API (FastAPI/uvicorn)
+    volumes:
+      - server-data:/data
+    environment:
+      - SOOSEF_DATA_DIR=/data
+      - VERISOO_GOSSIP_INTERVAL=60
+    restart: unless-stopped
+
+  # === Tier 3: Federation Relay ===
+  # Lightweight relay for cross-organization attestation sync.
+  # Deploy on a VPS in a friendly jurisdiction (Iceland, Switzerland).
+  # Stores only attestation records — no key material, no stego, no web UI.
+  relay:
+    build:
+      context: ../..
+      dockerfile: deploy/docker/Dockerfile
+      target: relay
+    ports:
+      - "8001:8000"   # Federation API
+    volumes:
+      - relay-data:/data
+    environment:
+      - SOOSEF_DATA_DIR=/data
+    restart: unless-stopped
+
+volumes:
+  server-data:
+    driver: local
+  relay-data:
+    driver: local