Added readme and license

LICENSE

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+MIT License
+
+Copyright (c) 2026 Drink_Bepis
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Quest Expand All
+
+A small World of Warcraft addon that adds an **expand/collapse all** button to the quest log, so you can open or close every zone header in one click instead of only getting the zone you're currently in.
+
+Built for **World of Warcraft Forever** using the retail UI API. Interface version `16001`.
+
+<!-- Add screenshots here, e.g.:
+![Quest log with the +/- All button](docs/button.png)
+-->
+
+## Features
+
+- **Toggle button** next to the quest counter: `+ All` expands every zone header, `- All` collapses them.
+- **Configurable startup behaviour**, applied each time the map/quest log opens:
+  - **Default**: Blizzard's standard behaviour (only the current zone is expanded)
+  - **Always collapsed**
+  - **Always expanded**
+- **Right-click the button** for a quick context menu to change the mode.
+- **Options panel** under *Options → AddOns → Quest Expand All* with the same setting.
+- Resizes the quest log search box so the button fits alongside it.
+
+## Installation
+
+1. Download or clone this repository.
+2. Make sure the folder is named `QuestExpandAll` (it must match the `.toc` file name).
+3. Copy it into your game's addons directory:
+
+   ```
+   <WoW install>/Interface/AddOns/QuestExpandAll/
+   ```
+
+4. Fully restart the game (or at least fully log out/in). This is required for a first-time run.
+
+Your folder should look like this:
+
+```
+QuestExpandAll/
+├── QuestExpandAll.toc
+├── QuestExpandAll.lua
+└── README.md
+```
+
+## Usage
+
+| Action | Result |
+| --- | --- |
+| Left-click the button | Expand or collapse all zone headers |
+| Right-click the button | Open the mode context menu |
+| Options → AddOns → Quest Expand All | Choose the startup mode from a dropdown |
+
+
+## Configuration
+
+Settings are stored per account in the `QuestExpandAllDB` saved variable:
+
+| Key | Values | Description |
+| --- | --- | --- |
+| `mode` | `default`, `collapsed`, `expanded` | Default quest log header behaviour when the map opens |
+
+## Troubleshooting
+
+**Search box isn't resized / button overlaps it**
+The search box is created when the map is first opened. The addon retries on quest log updates until it exists, so open the map once and it should adjust.
+
+**Settings don't persist**
+Make sure that you have fully logged out/in or restarted your game.
+
+## Contributing
+
+Issues and pull requests are welcome. When reporting a bug, include your game build, the addon version, and any Lua error text.
+
+## License
+
+Released under the [MIT License](LICENSE).