docs: Reconcile apt-ostree.py CHANGELOG.md with apt-layer changelog content

- Added comprehensive package management D-Bus methods documentation
- Included client management and transaction system details
- Added D-Bus type compatibility fixes and security enhancements
- Documented OSTree library integration and infrastructure setup
- Added version 0.0.1 for initial daemon integration work
- Consolidated all apt-ostree.py specific changes from apt-layer changelog
- Enhanced documentation with production policy guidance

This reconciles the apt-ostree.py changelog with the relevant content
from the apt-layer changelog, providing a complete history of the
daemon development and integration work.

src/apt-ostree.py/CHANGELOG.md

@@ -10,6 +10,26 @@
   - Added proper directory creation and permissions setup
   - Integrated D-Bus policy file installation with fallback creation
 
+- **Package Management D-Bus Methods**: Comprehensive package management interface
+  - **`InstallPackages`**: Install packages with transaction tracking
+    - Method: `org.debian.aptostree1.Sysroot.InstallPackages`
+    - Parameters: `array:string` (packages), `boolean` (live_install)
+    - Returns: `a{sv}` (success, transaction_id, packages, live_install, message)
+  - **`RemovePackages`**: Remove packages with transaction tracking
+    - Method: `org.debian.aptostree1.Sysroot.RemovePackages`
+    - Parameters: `array:string` (packages), `boolean` (live_remove)
+    - Returns: `a{sv}` (success, transaction_id, packages, live_remove, message)
+
+- **Client Management Enhancement**: Automatic client registration for D-Bus calls
+  - Clients automatically registered when calling methods
+  - Client authorization working with root/sudo group validation
+  - Client tracking with UID, PID, and systemd unit information
+
+- **Transaction Management**: UUID-based transaction system
+  - Transaction IDs generated for each operation
+  - Transaction lifecycle (start, commit, rollback) functional
+  - Transaction logging and status tracking operational
+
 ### Changed
 - **Installation Script**: Enhanced `install.sh` to include complete systemd service setup
   - Merged functionality from separate service installation script
@@ -17,6 +37,11 @@
   - Updated service management commands to use correct service name (`apt-ostreed.service`)
   - Enhanced documentation and usage examples
 
+- **D-Bus Type Compatibility**: Fixed D-Bus type errors by flattening status dictionary
+  - Removed nested `config` dictionary that caused `TypeError`
+  - Converted all values to D-Bus-compatible types (string, int, bool, double)
+  - Ensured all returned values are simple, serializable types
+
 ### Security
 - **Service Security Hardening**: Implemented comprehensive security features
   - `ProtectSystem=strict` for system protection
@@ -26,6 +51,12 @@
   - Restricted read/write paths to only necessary directories
   - Root-only D-Bus policy for production security
 
+- **Production Security Enhancement**: Updated D-Bus policy for production use
+  - **Production Policy**: Restrict access to root users only
+  - **Security Rationale**: All apt-ostree operations require root privileges
+  - **Simplified Security Model**: Eliminates need for complex PolicyKit authorization
+  - **Consistent with System Tools**: Matches security model of apt, dpkg, ostree
+
 ### Infrastructure
 - **Directory Structure**: Created proper directory hierarchy
   - `/var/lib/apt-ostree` for daemon data
@@ -33,6 +64,11 @@
   - `/var/log/apt-ostree` for logging
   - Proper permissions and ownership setup
 
+- **OSTree Library Integration**: Successfully integrated OSTree library dependencies
+  - `libostree-1-1`: Core OSTree library for atomic operations
+  - `gir1.2-ostree-1.0`: GObject introspection bindings for Python integration
+  - Daemon functionality verified without import errors
+
 ### Documentation
 - **Service Documentation**: Added comprehensive service management documentation
   - Service installation and configuration instructions
@@ -40,6 +76,12 @@
   - Usage examples for systemctl commands
   - File installation locations and purposes
 
+- **D-Bus Documentation**: Enhanced D-BUS.md with production policy guidance
+  - Production policy rationale and security considerations
+  - Development vs production environment guidance
+  - Clear explanation of root-only access requirements
+  - Troubleshooting information for production deployment
+
 ## [0.1.0] - 2024-01-15
 
 ### Added
@@ -65,16 +107,46 @@
 - **Debian Integration**: Full integration with Debian package management
 - **Systemd Integration**: Proper systemd service lifecycle management
 
+## [0.0.1] - 2024-01-14
+
+### Added
+- **Initial Daemon Integration**: Integrated apt-layer.sh with apt-ostree.py daemon for atomic operations via D-Bus
+- **D-Bus Service and Interface Management**: `org.debian.aptostree1` service with proper interface definition
+- **Daemon Lifecycle Management**: Start, stop, status, install, uninstall commands
+- **Client Registration System**: Client registration and unregistration with the daemon
+- **Transaction Management**: Transaction lifecycle via daemon (start, commit, rollback)
+- **Atomic Package Operations**: Layer, deploy, upgrade, rollback via daemon
+
+### Technical
+- **D-Bus Communication**: Robust D-Bus client functionality with timeout support
+- **Error Handling**: Comprehensive error handling and recovery mechanisms
+- **Path Resolution**: Fixed daemon source path discovery for compiled script compatibility
+- **Import Resolution**: Fixed all Python import conflicts and package structure issues
+- **Property Decorators**: Resolved D-Bus property conflicts using standard Python `@property`
+- **Method Signatures**: Fixed D-Bus method signatures for proper interface definition
+
+### Integration
+- **apt-layer.sh Integration**: Added daemon subcommands to main dispatch
+- **Test Infrastructure**: Comprehensive test suite for daemon integration
+- **Repository Cleanup**: Removed Python cache files and updated .gitignore
+- **VM Testing**: Verified daemon integration works correctly in VM environment
+
 ---
 
 ## Version History
 
-### Version 0.1.0
+### Version 0.1.0 (2024-01-15)
 - Initial release with basic daemon functionality
 - D-Bus interface implementation
 - Package management integration
 - OSTree and ComposeFS support
 
+### Version 0.0.1 (2024-01-14)
+- Initial daemon integration with apt-layer.sh
+- D-Bus service and interface management
+- Client registration and transaction management
+- Import resolution and property decorator fixes
+
 ### Unreleased
 - Systemd service integration
 - Enhanced security hardening