feat(capture-tools): implement capture tools with toolbar and canvas functionality (#74)

- Introduced a new capture tools module with a toolbar for annotation.
- Added functionality for drawing, text annotations, and OCR capabilities.
- Integrated a width slider for annotation stroke width adjustment.
- Implemented color selection for annotations with a color palette.
- Added tests for capture tools functionality and annotation model.
- Updated i18n handling to use shared gettext domain.
- Enhanced styling for capture tools UI components.
- Ensured compatibility with existing modules and updated schemas.

Author: leandromqrs

ARCHITECTURE.md

@@ -58,6 +58,7 @@ src/
   moduleManager.ts      Runtime lifecycle and reconciliation
   registry.ts           Manifest-to-factory association
   core/                  Context, LifecycleScope, settings, and logging
+  capture/               In-capture annotation toolbar and canvas, annotated export, and local OCR
   device/                Reactive detection plus pure classification
   clipboard/             Clipboard history module and UI
   desktop/               Desktop-only modules such as tray icons
@@ -70,7 +71,8 @@ src/
 ```
 
 Complex Shell widgets keep pure calculations in Shell-free files where useful. Current examples
-include device classification, Dash layout, monitor topology, tray state, and clock presentation.
+include device classification, screenshot/OCR geometry, Dash layout, monitor topology, tray state,
+and clock presentation.
 
 ## Adding A Module
 

CREDITS.md

@@ -40,3 +40,13 @@ The **Meeting Clock** module is inspired by
 [**danmoz/meetingtime**](https://github.com/danmoz/meetingtime).
 Thanks to [@danmoz](https://github.com/danmoz) for the meeting reminder behavior and
 calendar-driven workflow.
+
+## Capture Tools
+
+The annotation workflow in **Capture Tools** is inspired by
+[**AlexanderVanhee/gradia-capture**](https://github.com/AlexanderVanhee/gradia-capture), and its
+local screenshot OCR workflow is inspired by
+[**SamkitJain660/Shotzy**](https://github.com/SamkitJain660/Shotzy). The custom symbolic SVGs under
+`data/icons/hicolor/scalable/actions/` are copied from Gradia Capture and redistributed under
+GPL-3.0. The toolbar integration, annotation canvas, export, and OCR implementation are otherwise
+independent.

README.md

@@ -38,6 +38,7 @@ Aurora is split into independent modules, so you can enable only what you want.
 - **Skip Overview on Login** - skips the overview on startup so GNOME Shell opens directly to the desktop.
 - **Pip On Top** - keeps Picture-in-Picture windows above other windows automatically.
 - **Focus Launched Windows** - focuses newly launched windows instead of showing window-ready notifications.
+- **Capture Tools** - adds a Gradia-style floating annotation toolbar to the top of GNOME's screenshot interface as soon as it opens, with drawing, shapes, text, numbered annotations, annotated export, and optional local Tesseract OCR.
 - **XWayland Indicator** - adds an X11 badge to XWayland apps in the Alt+Tab switcher.
 
 ### Privacy & Clipboard
@@ -50,6 +51,7 @@ All modules can be toggled independently from the extension preferences.
 ## Requirements
 
 - GNOME Shell 50+
+- Tesseract with the desired language data (optional, for Capture Tools OCR)
 - [Node.js](https://nodejs.org/) 20+
 - [Yarn](https://yarnpkg.com/) 4+
 - [just](https://github.com/casey/just) (command runner)
@@ -86,5 +88,7 @@ Aurora Shell builds on the work of the wider GNOME community. Special thanks to:
 - [**CleoMenezesJr/weather-oclock**](https://github.com/CleoMenezesJr/weather-oclock) inspired the Weather Clock module.
 - [**danmoz/meetingtime**](https://github.com/danmoz/meetingtime) inspired the Meeting Clock module.
 - [**swsnr/gnome-shell-extension-xwayland-indicator**](https://codeberg.org/swsnr/gnome-shell-extension-xwayland-indicator/) the inspiration behind the XWayland Indicator module.
+- [**AlexanderVanhee/gradia-capture**](https://github.com/AlexanderVanhee/gradia-capture) inspired the Capture Tools annotation workflow.
+- [**SamkitJain660/Shotzy**](https://github.com/SamkitJain660/Shotzy) inspired the local screenshot OCR workflow.
 
 See [CREDITS.md](CREDITS.md) for the full list of attributed work.