Bump release metadata to 1.3.0 and align docs/changelog with the latest feature PR

CHANGELOG

@@ -1,5 +1,24 @@
 # Changelog
 
+## [1.3.0] - 2026-03-16
+
+### Added
+
+- Interactive 3D packing UI improvements with OrbitControls, step-by-step animation, live status feedback, keyboard shortcuts, and an unplaced-object panel.
+- Native release packaging for Linux (`.deb`), macOS (`.pkg`), and Windows (`.msix`) alongside the archive bundles and Docker image publishing pipeline.
+- Background update support that can download the latest matching GitHub release asset and verify checksums before installation.
+
+### Changed
+
+- Expanded the packing engine with reusable `Vec3` / `BoundingBox` primitives, optional rotations, and physics-aware stability heuristics for support, balance, and weight layering.
+- Refactored the backend into dedicated configuration, geometry, model, optimizer, API, and update modules while keeping the web frontend served from the Rust application.
+- Updated the project documentation, installation scripts, and frontend/backend copy to the current English release presentation.
+
+### Improved
+
+- Extended CI/release automation with formatting, clippy, tests, CodeQL, Docker publishing, and native installer workflows.
+- Refreshed release documentation to better explain deterministic installs, native packages, Docker usage, and automatic updates.
+
 ## [1.2.0] - 2025-12-14
 
 ### Added

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "sort_it_now"
-version = "1.2.0"
+version = "1.3.0"
 edition = "2024"
 license = "LicenseRef-NCSL-1.0"
 

README.md

@@ -6,13 +6,15 @@ An intelligent 3D packing optimization service with interactive visualization.
 
 ### Backend (Rust)
 
-- **Heuristic packing algorithm** considering:
+- **Physics-aware heuristic packing algorithm** considering:
   - Weight limits and distribution
   - Stability and support (60% minimum support ratio)
   - Center of mass balance
   - Layering (heavy objects at the bottom)
 - **Automatic multi-container management**
 - **Optional object rotations** (enabled via request flag or environment variable)
+- **Background GitHub release updater** with checksum verification and configurable rate-limit handling
+- **Native release installers** for Linux (`.deb`), macOS (`.pkg`), and Windows (`.msix`)
 - **Comprehensive unit tests**
 - **REST API** with JSON communication
 - **OpenAPI & Swagger UI** with live documentation at `/docs`
@@ -95,7 +97,7 @@ The artifacts are uploaded both as workflow artifacts and automatically added to
 ### Single-command Installation / Uninstallation
 
 For reproducible installs, prefer a release tag (or commit SHA) instead of the mutable `main` branch.
-Replace every `<version>` placeholder below with the same release tag, including the `v` prefix (for example `v1.2.0`).
+Replace every `<version>` placeholder below with the same release tag, including the `v` prefix (for example `v1.3.0`).
 The examples download the script first so you can review it before executing.
 You can additionally set `SORT_IT_NOW_VERSION=<version>` to instruct the install scripts to download that specific release.
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sort-it-now",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "description": "",
   "license": "LicenseRef-NCSL-1.0",
   "author": "",