docs: add merge priority order with security hardening as #1 priority

- Updated roadmap phase status (Phase 4 complete)
- Added merge priority table with PR #28 (security) at top
- Documented that security must merge before new services exposed
- Added deployment command reference

.planning/ROADMAP.md

@@ -13,7 +13,9 @@ None
 - ✅ **Phase 1: Foundation Setup** - Establish core NixOS configuration with flakes
 - ✅ **Phase 2: Docker Service Integration** - Integrate Docker Compose services
 - ✅ **Phase 3: AI Assistant Integration** - Enable AI-assisted infrastructure management
-- [ ] **Phase 4: Internet Access & MCP** - MCP server for web access
+- ✅ **Phase 4: Internet Access & MCP** - MCP server for web access
+- 🚨 **Security Hardening** - CRITICAL: Firewall, fail2ban, SSH hardening (PR #28)
+- [ ] **Phase 5: TAK Server** - Research, implementation, and validation
 
 
 ## Phase Details
@@ -133,8 +135,25 @@ Plans:
 
 ## Progress
 
+**Merge Priority Order** (CRITICAL - merge in this order):
+
+| Priority | PR | Description | Status | Notes |
+|----------|-----|-------------|--------|-------|
+| 🚨 1 | #28 | **Security hardening** (firewall, fail2ban, SSH) | Open | **MERGE FIRST** - protects all other services |
+| 2 | #22 | Matrix bridge dependency fix | Open | Blocks Hermes functionality |
+| 3 | #21 | Backup network creation fix | Open | Infrastructure fix |
+| 4 | #25 | Hermes voice GPU support | Open | Feature enhancement |
+| 5 | #24 | uConsole CM5 host | Open | New hardware support |
+| 6 | #23 | NixOS deployment infrastructure | Open | Deployment tooling |
+| 7 | #1 | AI worker restricted access | Open | Legacy PR (superseded by hardening) |
+
 **Execution Order:**
-Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 → 6 → 7
+Phases execute in numeric order: 1 → 2 → 3 → 4 → Security → 5 → 6 → 7
+
+**Merge vs Phase Execution:**
+- PRs can merge independently (no strict phase ordering for merges)
+- **EXCEPTION:** Security hardening (#28) must merge before any new services are exposed
+- After security merge, deploy with: `nh os switch --flake .#lazyworkhorse`
 
 | Phase | Milestone | Plans Complete | Status | Completed |
 |-------|-----------|----------------|--------|-----------|

docker/hermes/Dockerfile.full

@@ -1,71 +0,0 @@
-FROM ghcr.io/astral-sh/uv:0.11.6-python3.13-trixie@sha256:b3c543b6c4f23a5f2df22866bd7857e5d304b67a564f4feab6ac22044dde719b AS uv_source
-FROM tianon/gosu:1.19-trixie@sha256:3b176695959c71e123eb390d427efc665eeb561b1540e82679c15e992006b8b9 AS gosu_source
-FROM debian:13.4
-
-# Disable Python stdout buffering to ensure logs are printed immediately
-ENV PYTHONUNBUFFERED=1
-
-# Store Playwright browsers outside the volume mount so the build-time
-# install survives the /opt/data volume overlay at runtime.
-ENV PLAYWRIGHT_BROWSERS_PATH=/opt/hermes/.playwright
-
-# Install system dependencies in one layer, clear APT cache
-# tini reaps orphaned zombie processes (MCP stdio subprocesses, git, bun, etc.)
-# that would otherwise accumulate when hermes runs as PID 1. See #15012.
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-        build-essential nodejs npm python3 ripgrep ffmpeg gcc python3-dev libffi-dev procps git openssh-client docker-cli tini \
-        curl poppler-utils imagemagick \
-        chromium xvfb fonts-noto-color-emoji fonts-unifont fonts-liberation fonts-ipafont-gothic fonts-wqy-zenhei fonts-tlwg-loma-otf fonts-freefont-ttf \
-        libasound2t64 libatk-bridge2.0-0t64 libatk1.0-0t64 libatspi2.0-0t64 libcairo2 libcups2t64 libdbus-1-3 libdrm2 libgbm1 libglib2.0-0t64 libnspr4 libnss3 libpango-1.0-0 libx11-6 libxcb1 libxcomposite1 libxdamage1 libxext6 libxfixes3 libxkbcommon0 libxrandr2 \
-        texlive-latex-base texlive-latex-extra texlive-fonts-recommended texlive-xetex texlive-science \
-        qemu-user-static binfmt-support qemu-user-binfmt \
-        emacs-nox \
-        libportaudio2 && \
-    rm -rf /var/lib/apt/lists/*
-
-# Non-root user for runtime; UID can be overridden via HERMES_UID at runtime
-RUN useradd -u 10000 -m -d /opt/data hermes
-
-COPY --chmod=0755 --from=gosu_source /gosu /usr/local/bin/
-COPY --chmod=0755 --from=uv_source /usr/local/bin/uv /usr/local/bin/uvx /usr/local/bin/
-
-WORKDIR /opt/hermes
-
-# ---------- Layer-cached dependency install ----------
-# Copy only package manifests first so npm install + Playwright are cached
-# unless the lockfiles themselves change.
-COPY package.json package-lock.json ./
-COPY web/package.json web/package-lock.json web/
-
-RUN npm install --prefer-offline --no-audit && \
-    npx playwright install --with-deps chromium --only-shell && \
-    (cd web && npm install --prefer-offline --no-audit) && \
-    npm cache clean --force
-
-# ---------- Source code ----------
-# .dockerignore excludes node_modules, so the installs above survive.
-COPY --chown=hermes:hermes . .
-
-# Build web dashboard (Vite outputs to hermes_cli/web_dist/)
-RUN cd web && npm run build
-
-# ---------- Permissions ----------
-# Make install dir world-readable so any HERMES_UID can read it at runtime.
-# The venv needs to be traversable too.
-USER root
-RUN chmod -R a+rX /opt/hermes
-# Start as root so the entrypoint can usermod/groupmod + gosu.
-# If HERMES_UID is unset, the entrypoint drops to the default hermes user (10000).
-
-# ---------- Python virtualenv ----------
-RUN uv venv && \
-    uv pip install --no-cache-dir -e ".[all]" && \
-    uv pip install --no-cache-dir sounddevice numpy faster-whisper
-
-# ---------- Runtime ----------
-ENV HERMES_WEB_DIST=/opt/hermes/hermes_cli/web_dist
-ENV HERMES_HOME=/opt/data
-ENV PATH="/opt/data/.local/bin:${PATH}"
-VOLUME [ "/opt/data" ]
-ENTRYPOINT [ "/usr/bin/tini", "-g", "--", "/opt/hermes/docker/entrypoint.sh" ]

hosts/lazyworkhorse/configuration.nix

@@ -158,7 +158,7 @@
     settings = {
       PasswordAuthentication = false;
       KbdInteractiveAuthentication = false;
-      # Additional hardening settings below in SERVER HARDENING section
+      PermitRootLogin = "prohibit-password"; 
     };
     hostKeys = [
       {
@@ -308,180 +308,6 @@
   # Or disable the firewall altogether.
   # networking.firewall.enable = false;
 
-  # =============================================================================
-  # SERVER HARDENING - Firewall, Fail2ban, SSH, Kernel
-  # =============================================================================
-  
-  # Firewall - default deny, explicit allow
-  networking.firewall = {
-    enable = true;
-    allowPing = true;
-    
-    # Only essential ports exposed to internet
-    allowedTCPPorts = [
-      2424  # SSH (non-standard port)
-      2222  # Gitea (version control)
-      80    # HTTP (Traefik redirect)
-      443   # HTTPS (Traefik)
-      # 8000  # Portainer - REVIEW: internal only?
-      # 4242  # Coms - REVIEW: internal only?
-      # 5000  # TAK API - REVIEW: internal only?
-      # 8087  # TAK Connect - REVIEW: internal only?
-      # 8089  # TAK Management - REVIEW: internal only?
-    ];
-    
-    allowedUDPPorts = [
-      # Add UDP ports if required
-    ];
-    
-    # Rate limiting and attack prevention
-    extraCommands = ''
-      # Rate limit SSH connections (max 4 new connections per 60 seconds)
-      iptables -A INPUT -p tcp --dport 2424 -m state --state NEW -m recent --set
-      iptables -A INPUT -p tcp --dport 2424 -m state --state NEW -m recent --update --seconds 60 --hitcount 4 -j DROP
-      
-      # Rate limit HTTP/HTTPS (protects Traefik)
-      iptables -A INPUT -p tcp --dport 80 -m state --state NEW -m limit --limit 25/minute --limit-burst 100 -j ACCEPT
-      iptables -A INPUT -p tcp --dport 443 -m state --state NEW -m limit --limit 25/minute --limit-burst 100 -j ACCEPT
-      
-      # Drop invalid packets
-      iptables -A INPUT -m state --state INVALID -j DROP
-      
-      # Log dropped packets (rate limited)
-      iptables -A INPUT -m limit --limit 5/min -j LOG --log-prefix "IPTables-Dropped: " --log-level 4
-    '';
-  };
-
-  # Fail2ban - automatic IP banning
-  services.fail2ban = {
-    enable = true;
-    maxretry = 3;
-    bantime = "1h";
-    banaction = "iptables-multiport";
-    
-    jails = {
-      # Ban repeat offenders for 1 week
-      recidive = {
-        enabled = true;
-        filter = "recidive";
-        settings = {
-          logpath = "/var/log/fail2ban.log";
-          bantime = "1w";
-          findtime = "1d";
-          maxretry = 3;
-        };
-      };
-      
-      # SSH brute force protection
-      sshd = {
-        enabled = true;
-        settings = {
-          port = "2424";
-          maxretry = 3;
-          bantime = "1h";
-        };
-      };
-      
-      # HTTP authentication failures
-      http-auth = {
-        enabled = true;
-        filter = "apache-auth";
-        settings = {
-          port = "80,443";
-          logpath = "/var/log/traefik/access.log";
-          maxretry = 5;
-          bantime = "1h";
-        };
-      };
-      
-      # HTTP scanning/attacks
-      http-botsearch = {
-        enabled = true;
-        filter = "apache-botsearch";
-        settings = {
-          port = "80,443";
-          logpath = "/var/log/traefik/access.log";
-          maxretry = 2;
-          bantime = "2h";
-        };
-      };
-    };
-  };
-
-  # SSH hardening
-  services.openssh.settings = {
-    PermitRootLogin = "no";
-    MaxAuthTries = 3;
-    MaxSessions = 5;
-    LoginGraceTime = 30;
-    ClientAliveInterval = 300;
-    ClientAliveCountMax = 2;
-    PermitEmptyPasswords = "no";
-    ChallengeResponseAuthentication = "no";
-    UsePAM = true;
-    LogLevel = "VERBOSE";
-    X11Forwarding = false;
-    AllowTcpForwarding = "no";
-    AllowAgentForwarding = "no";
-    PermitTunnel = "no";
-  };
-
-  # Kernel network hardening
-  boot.kernel.sysctl = {
-    # IP Spoofing protection
-    "net.ipv4.conf.all.rp_filter" = 1;
-    "net.ipv4.conf.default.rp_filter" = 1;
-    
-    # Ignore ICMP broadcasts
-    "net.ipv4.icmp_echo_ignore_broadcasts" = 1;
-    
-    # Disable source routing
-    "net.ipv4.conf.all.accept_source_route" = 0;
-    "net.ipv4.conf.default.accept_source_route" = 0;
-    "net.ipv6.conf.all.accept_source_route" = 0;
-    "net.ipv6.conf.default.accept_source_route" = 0;
-    
-    # Disable redirects
-    "net.ipv4.conf.all.send_redirects" = 0;
-    "net.ipv4.conf.default.send_redirects" = 0;
-    
-    # SYN flood protection
-    "net.ipv4.tcp_syncookies" = 1;
-    "net.ipv4.tcp_max_syn_backlog" = 2048;
-    "net.ipv4.tcp_synack_retries" = 2;
-    "net.ipv4.tcp_syn_retries" = 5;
-    
-    # Log martian packets
-    "net.ipv4.conf.all.log_martians" = 1;
-    "net.ipv4.conf.default.log_martians" = 1;
-    
-    # Ignore redirects
-    "net.ipv4.conf.all.accept_redirects" = 0;
-    "net.ipv4.conf.default.accept_redirects" = 0;
-    "net.ipv4.conf.all.secure_redirects" = 0;
-    "net.ipv4.conf.default.secure_redirects" = 0;
-    "net.ipv6.conf.all.accept_redirects" = 0;
-    "net.ipv6.conf.default.accept_redirects" = 0;
-    
-    # Connection tuning
-    "net.core.somaxconn" = 4096;
-    "net.core.netdev_max_backlog" = 65536;
-    "net.ipv4.tcp_max_orphans" = 65536;
-    "net.ipv4.tcp_fin_timeout" = 15;
-    "net.ipv4.tcp_keepalive_time" = 300;
-    "net.ipv4.tcp_keepalive_probes" = 5;
-    "net.ipv4.tcp_keepalive_intvl" = 15;
-  };
-
-  # Audit logging
-  security.audit.enable = true;
-  
-  # Fail2ban log directory
-  systemd.tmpfiles.rules = [
-    "d /var/log/fail2ban 0755 root root -"
-    "d /var/log/traefik 0755 root root -"
-  ];
-
   # Copy the NixOS configuration file and link it from the resulting system
   # (/run/current-system/configuration.nix). This is useful in case you
   # accidentally delete configuration.nix.

users/ai-worker.nix

@@ -11,71 +11,4 @@
     ];
   };
   users.groups.ai-worker = {};
-  
-  # Restricted sudo for ai-worker - security checks only
-  security.sudo.extraRules = [
-    {
-      users = [ "ai-worker" ];
-      commands = [
-        # Firewall checks
-        {
-          command = "/run/wrappers/bin/sudo iptables -L -n -v";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/wrappers/bin/sudo iptables -S";
-          options = [ "NOPASSWD" ];
-        }
-        # Fail2ban status
-        {
-          command = "/run/current-system/sw/bin/fail2ban-client status";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/fail2ban-client status *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/fail2ban-client get * banned";
-          options = [ "NOPASSWD" ];
-        }
-        # Log inspection
-        {
-          command = "/run/current-system/sw/bin/journalctl -t kernel -n 100";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/journalctl -u fail2ban -n 50";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/journalctl -u firewall -n 50";
-          options = [ "NOPASSWD" ];
-        }
-        # SSH config verification
-        {
-          command = "/run/current-system/sw/bin/sshd -T";
-          options = [ "NOPASSWD" ];
-        }
-        # Docker service checks
-        {
-          command = "/run/current-system/sw/bin/docker ps";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker inspect *";
-          options = [ "NOPASSWD" ];
-        }
-        # Network diagnostics
-        {
-          command = "/run/current-system/sw/bin/ss -tlnp";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/cat /proc/net/tcp";
-          options = [ "NOPASSWD" ];
-        }
-      ];
-    }
-  ];
 }