feat: rename project to DualFloatingClock, add README, public release

- Full rename: CMake target, bundle, LaunchAgent label
  (com.dualfloatingclock.clock), QSettings org/app, tray tooltip,
  icns resource, build scripts, CI workflows, sample config
- Config XML: new root DualFloatingClockConfig; reader accepts legacy
  ClouckConfig root for painless migration of existing settings
- README rewritten: fork provenance (ivaquero/clouck), features, build,
  tests, usage
- Drop stale README-CN.md

README.md

@@ -1,169 +1,61 @@
-# ☁ Clouck
+# DualFloatingClock
 
-![Build Qt](https://github.com/ivaquero/clouck/workflows/Build%20Qt%20Application/badge.svg)
-![Release](https://github.com/ivaquero/clouck/workflows/Build%20and%20Release%20Clouck/badge.svg)
-![code size](https://img.shields.io/github/languages/code-size/ivaquero/clouck.svg)
-![repo size](https://img.shields.io/github/repo-size/ivaquero/clouck.svg)
+A menu-bar-first, dual-timezone floating clock for macOS, Windows and Linux — built with Qt6.
 
-This project aims to build a cross-platform floating clock based on Qt6.
+> **Fork provenance:** this project is a fork of [clouck](https://github.com/ivaquero/clouck)
+> by [ivaquero](https://github.com/ivaquero) — a cross-platform floating clock.
+> DualFloatingClock extends it with dual time zones, a flat tray menu, glyph outlines,
+> per-element font sizing and a menu-bar-only presence (no Dock icon on macOS).
 
-## Motivation
+## What it does
 
-When coding in full screen mode, I often forget the time.
-When on macOS / Linux, the clock on the menu bar is too small to be noticeable, so is the clock on Windows.
+A borderless, always-on-top clock that shows **two configurable time zones**
+side by side — each with its own time and city name — plus a menu bar tray icon
+for quick access to all settings. Designed for people working across time zones
+who want the second (or third) clock glanceable, not hidden in world-clock widgets.
 
-![clock](doc/clock.png)
+## Features
 
-## ✨ Features
+- **Dual time zones** — pick any IANA zone for each clock (`Europe/Bucharest`, `America/Los_Angeles`, …)
+- **Floating clock** — frameless, always-on-top, drag anywhere, resizable from the corner; visible even in fullscreen spaces (macOS)
+- **Menu-bar tray** — icon adapts to light/dark mode; flat context menu with every setting (no submenus, no clicking on the clock itself)
+- **Text outline** — configurable glyph outline (color) under the text fill, so the clock stays readable on any wallpaper
+- **Per-element fonts** — separate font sizes for the time and the city name (up to 200pt)
+- **Colors via HTML/hex** — type `#00ff00`, `#80000000` (with alpha) or `transparent`; falls back to the native color picker
+- **Start at Login** — toggle in the tray menu (macOS LaunchAgent)
+- **Menu-bar-only on macOS** — no Dock icon, no ⌘Tab entry; lives in the menu bar
+- **XML config** — persisted in the OS config location (e.g. `~/Library/Preferences/DualFloatingClock/DualFloatingClock/config.xml`)
 
-- [ ] **Cross Platform**
-  - [x] MacOS
-  - [x] Windows
-  - [ ] Linux
-- [x] **Main Window**
-  - [x] Always On Top
-  - [x] Frameless
-  - [x] Drag and Move
-  - [x] Resizable
-  - [x] Show in Fullscreen Mode
-- [x] **Style**
-  - [x] Right Click Menu
-  - [x] Set Background Color
-  - [ ] Transparent Background
-  - [x] Set Font Color
-  - [x] Set FontSize
-- [x] **Tweakable** (XML)
-  - [x] Read Settings
-  - [x] Write Settings
-  - [x] Reset Settings
-- [ ] **Time Zone**
-  - [ ] Select Time Zone
+## Build
 
-## Quick Start
-
-### Build and Run
-
-#### Quick Build (Recommended)
+Requires Qt6 (Core, Widgets, Test) and CMake ≥ 3.16.
 
 ```bash
-# One-click build
-./build.sh
+cmake -S . -B build
+cmake --build build
 
-# Run application
-./build/Clouck.app/Contents/MacOS/Clouck  # macOS
-./build/Clouck                           # Linux
+# macOS — run
+open build/DualFloatingClock.app
+# install to /Applications
+cp -R build/DualFloatingClock.app /Applications/
 ```
 
-#### Manual Build
+qmake is also supported (legacy): see `build.sh` / `DualFloatingClock.pro`.
+
+## Tests
 
 ```bash
-# Clean build files
-./clean.sh
-
-# Generate Makefile
-qmake Clouck.pro
-
-# Build
-make
-
-# Run
-./build/Clouck.app/Contents/MacOS/Clouck  # macOS
-./build/Clouck                             # Linux
+cd build && ctest
 ```
 
-#### Using CMake
+Qt Test suites: `ConfigManagerTest` (XML round-trip, default path), `AutoStartManagerTest` (LaunchAgent contents, enable/disable round-trip).
 
-```bash
-mkdir build && cd build
-cmake ..
-make
-./Clouck
-```
+## Usage
 
-## 🚀 GitHub Actions
-
-This project uses GitHub Actions for automated building and releasing:
-
-### CI/CD Workflows
-
-- **CI Build**: Validates builds on all platforms for every push/PR
-- **Build Qt**: Comprehensive builds using both qmake and CMake
-- **Release**: Creates distributable packages for tagged releases
-
-### Download Pre-built Binaries
-
-Visit the [Releases](https://github.com/ivaquero/clouck/releases) page to download pre-built binaries for:
-
-- **macOS**: DMG installer with native app bundle
-- **Windows**: ZIP package with all dependencies
-- **Linux**: TAR.GZ package with shared libraries
-
-### Creating a Release
-
-1. Tag a new version:
-
-   ```bash
-   git tag v1.0.0
-   git push origin v1.0.0
-   ```
-
-2. GitHub Actions will automatically build and create a release with binaries for all platforms
-
-### Configuration
-
-The application now uses XML configuration files instead of QSettings. Configuration is stored in `config.xml` with the following options:
-
-- **FontColor**: Font color in hex format
-- **BackgroundColor**: Background color with alpha transparency
-- **FontSize**: Font size in points (8-72)
-- **AlwaysOnTop**: Window always stays on top
-- **WindowPosition**: Window position coordinates
-
-The configuration file is automatically created when you first run the application and make changes to settings.
-
-### Usage
-
-- **Move**: Left-click and drag
-- **Menu**: Right-click for context menu
-- **Customize**: Change colors, font size, always-on-top behavior
-- **Configuration**: Settings are saved to `config.xml` and persist between sessions
-
-### Project Structure
-
-```text
-qClouck/
-├── build/                    # Build output directory
-│   ├── Clouck.app/           # macOS application bundle
-│   ├── *.o                   # Object files
-│   ├── moc_*.cpp            # Qt meta-object compiler output
-│   └── Makefile             # Build file
-├── config.xml               # XML configuration file
-├── build.sh                 # One-click build script
-├── clean.sh                 # Clean script
-├── Clouck.pro                # qmake project file
-├── CMakeLists.txt           # CMake project file
-└── README.md
-```
-
-### Build Output Management
-
-- All compilation files (.o, moc_*.cpp, Makefile, etc.) are output to `build/` directory
-- Executable files are located at `build/Clouck.app/Contents/MacOS/Clouck` (macOS) or `build/Clouck` (Linux)
-- Use `./clean.sh` to quickly clean all build files
-- Use `./build.sh` for complete one-click build
-
-### Next Steps
-
-- Time zone selection
-- Alarm functionality
-- Enhanced UI/UX
-
-## Requirements
-
-- Qt6 (Core, Widgets)
-- C++17 compatible compiler
-- CMake 3.16+ (optional, for CMake build)
+- **Move**: drag the clock · **Resize**: drag the bottom-right corner
+- **Settings**: right-click the **tray icon** (the clock itself has no menu — dragging-friendly)
+- Colors accept `#RRGGBB`, `#AARRGGBB` or `transparent`
 
 ## License
 
-See LICENSE file for details.
+Same as upstream clouck — see [LICENSE](LICENSE).