docs: add trunk-5.5 release notes (en & zh-cn)

README.md

@@ -82,6 +82,8 @@ Release tags are immutable markers created on the `trunk` branch. Each tag repre
 
 Below are the currently released stable versions and their change logs:
 
+- **trunk-5.5**: Please refer to the [v5.5 Release Notes](./en/release_notes/v5.5.md) for detailed changes.
+
 - **trunk-5.4**: Please refer to the [v5.4 Release Notes](./en/release_notes/v5.4.md) for detailed changes.
 
 - **trunk-5.2**: Please refer to the [v5.2 Release Notes](./en/release_notes/v5.2.md) for detailed changes.

README_zh-cn.md

@@ -83,6 +83,8 @@ Vela 的命名源自拉丁语中船帆的含义，也是南方星空中船帆星
 
 以下是当前已发布的稳定版本及其变更说明：
 
+- **trunk-5.5**：请查阅 [v5.5 版本发布说明](./zh-cn/release_notes/v5.5.md) 了解详细变更。
+
 - **trunk-5.4**：请查阅 [v5.4 版本发布说明](./zh-cn/release_notes/v5.4.md) 了解详细变更。
 
 - **trunk-5.2**：请查阅 [v5.2 版本发布说明](./zh-cn/release_notes/v5.2.md) 了解详细变更。

en/release_notes/v5.5.md

@@ -0,0 +1,357 @@
+# openvela trunk-5.5
+
+[ English | [简体中文](../../zh-cn/release_notes/v5.5.md) ]
+
+## Overview
+
+This openvela trunk-5.5 release brings comprehensive enhancements and improvements across the kernel, connectivity, multimedia, graphics, runtime framework, and developer tools. More importantly, this release **open-sources openvela's first lightweight native AI Agent engine**, and adds the **open-sourced QuickApp Feature framework runtime core library & tools, as well as the QuickJS lightweight JavaScript engine**.
+
+## Table of Contents
+
+- [New Feature Details](#new-feature-details)
+  - [Kernel (NuttX)](#kernel-nuttx)
+  - [Bluetooth](#bluetooth)
+  - [Connectivity Framework](#connectivity-framework)
+  - [Multimedia](#multimedia)
+  - [Graphics & Animation](#graphics--animation)
+  - [System Applications & Tools](#system-applications--tools)
+  - [System Services](#system-services)
+  - [Security & Runtime](#security--runtime)
+  - [QuickApp](#quickapp)
+  - [AI Agent](#ai-agent)
+- [Breaking Changes](#breaking-changes)
+- [Upgrade & Adaptation Guide](#upgrade--adaptation-guide)
+
+## New Feature Details
+
+### Kernel (NuttX)
+
+#### Architecture Support
+
+- Continued improvements across multiple architectures: ARM Cortex-M / Cortex-A / Cortex-R, ARM64, RISC-V, Xtensa, x86_64, TriCore, SPARC
+- ARMv8-R enhancements: UDIV instruction, Monitor-mode interrupt vectors, TEE jump optimization
+- TriCore Tasking toolchain C++ build support
+- QEMU ARMv8-A / ARMv8-R board-level enhancements and improvements
+
+#### Drivers
+
+- RPTUN / RPMsg: IVShmem fixes, BMP mode, UART port optimization
+- Virtio: virtio-snd audio, virtio-crypto encryption, virtio-mmio optimization and enhancements
+- V4L2 M2M video framework
+- ALSA audio adaptation enhancements
+
+#### Scheduler
+
+- Signal-handling refactor: `CONFIG_DISABLE_SIGNALS` support
+- SMP scheduling: spinlock double-unlock fix, priority scheduling optimization
+- POSIX compliance: `pthread_cond` API, `mq_open` path restrictions, `abort()` implementation
+- Per-CPU variable optimization
+
+#### Networking
+
+- VSock: virtio vsock support with sockif implementation
+- IPv4 / IPv6 forwarding and input processing fixes
+- Netdev locking, IGMP, VLAN, netlink route
+- TCP close fix
+
+#### File System
+
+- LROFS: truncate, create, copy file content optimization
+- GPT partition support
+- FATFS UTF-8 optimization
+- Procfs pressure monitoring
+
+#### Memory Management
+
+- Mempool multi-pool manager, dynamic pool configuration optimization
+- KASAN detection enhancements
+
+#### Libraries
+
+- libc: scanf, printf, strtol bug fixes and enhancements
+- libelf: `modlib` renamed to `libelf`
+- libcxx / libcxxabi: C++ initialization flow optimization
+
+#### Tools
+
+- nxgdb debugging enhancements
+- CMake build optimization
+- syscall generation tool supports `const union`
+
+### Bluetooth
+
+#### Connection Manager Rewrite
+
+- Full refactor of the ACL connection manager
+- SPP, HID, A2DP, AVRCP, HFP and other profiles adapted to the new connection management API
+- Profile callback mechanism optimized: from asynchronous dispatch to direct callback
+- Multi-connection support and stability fixes
+
+#### Protocol & Profile Upgrades
+
+- AVRCP upgraded from 3.0 to 4.0
+- GATT database hash computation and persistent storage (KVDB)
+- GATT Service Changed indication support
+- BLE Privacy configurable via Kconfig
+- SPP `connect_with_option` API
+- DID Profile build support
+
+#### Stability
+
+- Fixes for use-after-free, null pointer dereference, double free, resource leaks, and more
+
+### Connectivity Framework
+
+#### Telephony
+
+- TAPI sub-modules gain callback functions across the board
+- Modem upgrade operation support
+
+#### Network
+
+- Fixed callback leak issues
+- Fixed MQTTS certificate issue
+- Fixed resumable download issue
+
+### Multimedia
+
+#### Player
+
+- Media player core refactor
+- Audio focus management optimization
+- Streaming playback enhancements
+- Multi-core cross-CPU communication support
+
+#### Recorder
+
+- Recorder framework optimization, parameter passing fixes
+
+#### Media Graph
+
+- Media processing graph engine update
+- `media_uv_trigger` asynchronous interface
+- Asynchronous detection callback
+
+#### FFmpeg Upgraded to 7.x
+
+- Version upgrade: FFmpeg 5.x → 7.x
+
+### Graphics & Animation
+
+#### New Features
+
+- Animation system: Added `LV_ANIM_USE_FLOAT` config that extends start/end/cur/path_cb types from `int32_t` to `float`; added easing parameters (ease param), animation-complete callback, and frame-interval smoothing
+- Vector rendering (VG_Lite): Added border side rendering, tiled image support, stroke path cache and path upload modes, GPU utilization query interface, font cache reference counting, dynamic parameter print control
+- Image compatibility: Added compatibility decoding for LVGL V8 legacy `.bin` / `.rle` image formats (automatically converts V8 header to V9)
+- Image decoding: JPEG now fully supports orientation and CMYK; JPEG/PNG decoders allocate draw buffer in one shot; added decoding performance measurement
+- New widgets: `arc_label` curved-text widget; QRCode circular style and quiet zone
+- Rendering: draw_buf blur support; ARM MVE/NEON alpha pre-multiplication acceleration; global recolor; display rotation now implemented via transform matrix with FULL rendering-mode rotation support
+- Input: Added crown scroll event; added global focus object
+- Scrolling: Added force-elastic scroll property
+- Text: Restored text recolor; span widget supports BiDi bidirectional text
+- Canvas: Direct painting mode support
+- File system: Added `lv_fs_read_file_alloc` API that reads a file and auto-allocates memory
+- Memory: Added linear allocator; added `lv_reallocf`
+- Tools: Added argparse CLI library; added remote_ctrl remote-control component (integrated with NuttX libuv); GDB debugging module refactored for multi-instance and lazy loading
+- NemaGFX: Added freetype vector font support
+
+#### Performance Optimizations
+
+- Rendering refresh reduces unnecessary `refr_children` calls (by checking layer opa) and empty dispatches
+- Draw task descriptors merged-allocated via linear allocator to cut malloc calls
+- Style cache uses longer bitmaps, allowing a single call to fetch multiple space properties
+- Text drawing reduces `lv_text_get_size` and glyph lookup calls
+- Objects cache the current opa stack in the layer, avoiding repeated computation
+- VG_Lite adds a gradient pool that optimizes memory allocation and lookup; vector path / descriptor structures are streamlined
+- A8 format decoding performance improved; snapshots render starting from the top-level object
+
+#### Key Fixes
+
+- Fixed rendering anomalies when layer opacity/recolor was not restored after layer-area acquisition failure
+- Fixed flicker caused by conflicts between scroll animation and finger drag during continuous sliding
+- Fixed infinite loop in `scroll_end` events
+- Fixed accidental click triggered by two-finger swipe
+- Fixed multiple VG_Lite crashes (empty stroke cache, uninitialized gradient, empty clipper path)
+- Fixed memory leaks in SVG/PNG decoders
+- Fixed image-decoder memory leak under multi-core rendering scenarios
+- Fixed crashes of freetype and profiler_builtin during `lv_deinit`
+- Fixed textarea placeholder not vertically centered and wrapping anomalies
+- Fixed span widget text display corruption
+- Fixed anomalies when combining flex layout with RTL direction
+
+#### Testing
+
+- 20+ module unit-test coverage added (anim, area, event, draw_buf, vector, qrcode, span, fs, etc.)
+- CI switched to native 32/64-bit builds; all reference screenshots refreshed
+
+### System Applications & Tools
+
+#### ALSA-Lib
+
+- DMix drain fix, semaphore leak fix
+- mmap offset calculation fix, silent pre-fill optimization
+- Independent device logging support
+
+#### Test Frameworks
+
+- cmocka: XML output format, ELF test-file execution
+- ostest: atomic operations, spinlock, cancel test fixes
+- LTP `CLOCK_MONOTONIC` adaptation
+
+#### System Tools
+
+- `stty` terminal control enhancements
+- readline echo issue fix
+- NSH: stderr redirection, Ctrl+C exit fixes
+
+### System Services
+
+#### KVDB / Utils
+
+- BMP / AMP scenario connection optimization; default timeout raised from 0.5s to 5s
+- GDBus proxy property retrieval, double-free fix
+
+#### LibUV Extensions
+
+- AES-CCM mode API, ECDH shared-key, HKDF support
+
+#### UOrb Topics
+
+- Algorithm topics: gesture, posture, heart rate, pedometer
+- Charging state, vibrator on/off state topics
+
+#### OTA
+
+- AVB multi-image verification, `vbmeta_partition` mode
+
+#### Binder IPC
+
+- RPC / NDK separation, CPC ServiceManager compatibility
+
+#### ASH Framework
+
+- Microservice support, MessageLoopListener, C API exports
+
+#### Activity Manager
+
+- Fixed coexistence of applications with duplicate names; Lite mode refactor
+
+#### Window Manager
+
+- Lite single-instance mode, window transition animations
+
+### Security & Runtime
+
+#### OP-TEE
+
+- ELF TA support (CMake build), WASM multi-instance initialization
+- Mutex protection for concurrent TA initialization
+- Triad encryption/decryption interface
+
+#### WASM Runtime
+
+- netlib / WiFi / xtables WASM wrappers
+
+### QuickApp
+
+This release open-sources the entire QuickApp development stack, covering the JS engine, Feature framework, and application Shell runtime:
+
+- [QuickJS](./../../../../../apps_interpreters_quickjs)
+
+  A lightweight JavaScript engine based on an enhanced fork of Fabrice Bellard's QuickJS. It preserves the original lightweight, fast, and high-compatibility characteristics while integrating a set of new features, especially around developer tooling and debugging support, making it a more complete JavaScript runtime environment.
+
+- [runtime_feature](./../../../../../frameworks_runtimes_feature)
+
+  The QuickApp Feature framework runtime core library and tools. Developed in C/C++ for efficient JavaScript-to-native interoperability. The architecture consists of three core components: a runtime framework that provides a JS-native execution environment, a JIDL (Interface Description Language) and toolchain for auto-generating bi-directional invocation interfaces, and a standardized set of native developer APIs.
+
+- [runtime_ash](./../../../../../frameworks_runtimes_ash)
+
+  The openvela application Shell runtime environment. A lightweight C++ runtime foundation library for embedded systems, providing efficient and reliable low-level components for resource-constrained environments. The modular design covers: resource management (Bundle), system security (Crash handling), device info abstraction (Device Info), file system wrappers (File), file-descriptor management (Scoped FD), message-loop mechanism (Message Loop), stream processing, string conversion, threading, time/timer, networking, memory management, and debug tracing. Built with the GN build system, with CMake support via `CMakeLists.txt`, and compatible with the Kconfig configuration system, suitable for real-time operating systems such as NuttX.
+
+### AI Agent
+
+openvela [AI Agent](./../../../../../packages_ai_agent) is an AI agent engine designed to run on small devices such as watches, speakers, glasses, and earphones. Architecturally, the engine builds a full-stack intelligence pipeline from perception and memory to reasoning and execution, truly enabling devices to make autonomous decisions and deliver proactive services.
+
+## Breaking Changes
+
+> ⚠️ The changes below may impact existing code. Please review them carefully when upgrading.
+
+### Kernel
+
+| Type | Change | Impact |
+|------|--------|--------|
+| Rename | `modlib` → `libelf` | binfmt, ELF loading |
+| Rename | `PSEUDOFS_SOFTLINKS` → `FS_LINKS` | File system Kconfig |
+| API | `sched_note_printf` signature change | trace module |
+| API | `atomic_fetch_xxx` → `atomic_xxx` | atomic operations in apps |
+| New | `CONFIG_DISABLE_SIGNALS` | signal-related conditional compilation |
+| Config | `libcxxmini` → `libminiabi` | C++ initialization |
+
+### Bluetooth
+
+| Type | Change | Impact |
+|------|--------|--------|
+| Behavior | CM profile callbacks changed from asynchronous to direct | Profile callback handling |
+| Behavior | `pairing_complete` always reports BONDED | Pairing flow |
+| Behavior | Removed connection-state check in `security_changed` | Security callback |
+
+### Telephony
+
+| Type | Change | Impact |
+|------|--------|--------|
+| New | All TAPI sub-modules add callbacks | All TAPI callers |
+| Refactor | `char**` pointer parameter refactor | TAPI function signatures |
+
+### Runtime
+
+| Type | Change | Impact |
+|------|--------|--------|
+| Refactor | QuickApp interface refactor | QuickApp |
+| Replace | `UVTaskQueue` → ash MessageLoop C interface | QuickApp exit flow |
+| API | NetworkStatus callback returns object type | Network status |
+
+### System Services
+
+| Type | Change | Impact |
+|------|--------|--------|
+| Config | KVDB default timeout 0.5s → 5s | KVDB clients |
+| API | Binder RPC / NDK separation | Binder IPC |
+
+## Upgrade & Adaptation Guide
+
+### 1. Kernel Configuration
+
+- `CONFIG_PSEUDOFS_SOFTLINKS` → `CONFIG_FS_LINKS`
+- `modlib` API → `libelf`
+- `atomic_fetch_xxx` → `atomic_xxx`
+
+### 2. Bluetooth
+
+- Profile callbacks must be adapted to direct-callback mode (no longer asynchronously dispatched)
+- Review `pairing_complete` callback logic
+
+### 3. Telephony
+
+- TAPI callers must adapt to the newly added callback parameters
+
+### 4. Runtime
+
+- `UVTaskQueue` → ash MessageLoop C interface
+- Adapt to the updated `lv_anim` interface
+
+### 5. Build System
+
+- C++ initialization: `libcxxmini` → `libminiabi`
+
+### 6. Third-Party Libraries
+
+- FFmpeg upgraded to 7.x
+
+## Related Links
+
+- [Main repo](./../../../../../)
+- [AI Agent](./../../../../../packages_ai_agent)
+- [QuickJS](./../../../../../apps_interpreters_quickjs)
+- [Runtime Feature](./../../../../../frameworks_runtimes_feature)
+- [Runtime ASH](./../../../../../frameworks_runtimes_ash)
+- [Official documentation](https://doc.openvela.com)