Phase 8: Implement Debian package creation (2025-12-27)

- Create debian/ directory structure with all required files:
  - control: Package metadata and dependencies
  - compat: Debhelper compatibility level
  - changelog: Version history
  - rules: Build instructions
  - install: File installation mappings
  - postinst: Post-installation setup (user, venv, setcap)
  - prerm: Pre-removal script (stop service)
  - postrm: Post-removal script (cleanup, preserve config)
  - sensorpajen.service: System-wide systemd unit

- Update config.py to support dual-mode operation:
  - Auto-detects system installation (/opt/sensorpajen)
  - Uses /etc/sensorpajen for config in system mode
  - Falls back to PROJECT_ROOT/config for development

- Update scripts/approve-sensors.sh for system paths:
  - Detects system vs development installation
  - Uses correct venv and config paths

- Create scripts/verify-deb.sh: Automated build and verification

- Create debian/README.md: Comprehensive packaging documentation

Package features:
- System-wide installation to /opt/sensorpajen/
- Configuration in /etc/sensorpajen/ (preserved on upgrade/remove)
- Dedicated sensorpajen system user
- Automatic venv creation with dependencies
- Bluetooth capabilities set automatically
- Service auto-enabled but waits for config before starting
- Dual-mode code supports both system and development installations

scripts/approve-sensors.sh

@@ -1,23 +1,48 @@
 #!/bin/bash
-# Wrapper script for approve-sensors that sets minimal required env vars
+# Wrapper script for approve-sensors that works in both dev and system mode
 
-# Get script directory
-SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-PROJECT_ROOT="$( cd "$SCRIPT_DIR/.." && pwd )"
+# Detect installation type
+if [ -d "/opt/sensorpajen" ]; then
+    # System installation
+    PROJECT_ROOT="/opt/sensorpajen"
+    VENV_PATH="/opt/sensorpajen/venv"
+    
+    # Load config from system location
+    if [ -f "/etc/sensorpajen/sensorpajen.env" ]; then
+        set -a
+        source /etc/sensorpajen/sensorpajen.env
+        set +a
+    else
+        echo "Warning: /etc/sensorpajen/sensorpajen.env not found"
+        # Set minimal defaults
+        export MQTT_HOST="${MQTT_HOST:-localhost}"
+        export MQTT_PORT="${MQTT_PORT:-1883}"
+    fi
+else
+    # Development installation
+    SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+    PROJECT_ROOT="$( cd "$SCRIPT_DIR/.." && pwd )"
+    VENV_PATH="$PROJECT_ROOT/.venv"
+    
+    # Set minimal required environment variables
+    export MQTT_HOST="${MQTT_HOST:-localhost}"
+    export MQTT_PORT="${MQTT_PORT:-1883}"
 
-# Set minimal required environment variables
-export MQTT_HOST="${MQTT_HOST:-localhost}"
-export MQTT_PORT="${MQTT_PORT:-1883}"
-
-# Load actual config if it exists (will override defaults)
-if [ -f "$PROJECT_ROOT/config/sensorpajen.env" ]; then
-    set -a
-    source "$PROJECT_ROOT/config/sensorpajen.env"
-    set +a
+    # Load actual config if it exists (will override defaults)
+    if [ -f "$PROJECT_ROOT/config/sensorpajen.env" ]; then
+        set -a
+        source "$PROJECT_ROOT/config/sensorpajen.env"
+        set +a
+    fi
 fi
 
 # Activate virtual environment
-source "$PROJECT_ROOT/.venv/bin/activate"
+if [ -f "$VENV_PATH/bin/activate" ]; then
+    source "$VENV_PATH/bin/activate"
+else
+    echo "Error: Virtual environment not found at $VENV_PATH"
+    exit 1
+fi
 
 # Run the approve-sensors command
 python -m sensorpajen.approve_sensors "$@"