feat(quickshell): add caelestia-dots attribution and rebrand to Hornero

Complete attribution to caelestia-dots/shell project and rebrand C++ plugin
from Caelestia to Hornero throughout the codebase.

**Attribution & Licensing:**
- Added Credits section to main README.md acknowledging caelestia-dots/shell
- Created HorneroConfig-branded quickshell README with prominent attribution
- Added GPL-3.0 attribution header to quickshell LICENSE file

**C++ Plugin Rebranding (Caelestia → Hornero):**
- Renamed plugin/src/Caelestia/ → plugin/src/Hornero/
- Updated all CMakeLists.txt files:
  - Project name: caelestia-shell → hornero-shell
  - Module names: caelestia-* → hornero-*
  - QML URIs: Caelestia.* → Hornero.*
- Updated 36 C++ source files (.cpp/.hpp):
  - Namespaces: caelestia:: → hornero::
  - Include paths: #include "Caelestia/ → #include "Hornero/
  - Include guards: CAELESTIA_* → HORNERO_*
  - Q_PROPERTY declarations in MOC-processed headers
- Updated 37+ QML files:
  - Imports: import Caelestia → import Hornero
  - Type usage: Caelestia. → Hornero.
  - UI strings: "Caelestia Settings" → "Hornero Settings"
- Updated runtime strings:
  - Notification app IDs
  - PipeWire stream names
  - Hyprland global shortcuts
  - Environment variables: CAELESTIA_LIB_DIR → HORNERO_LIB_DIR
  - Library paths: /usr/lib/caelestia → /usr/lib/hornero
  - Wayland namespaces
  - Temporary file prefixes

**Shell Presets:**
- Renamed caelestia-{left,right}.json → hornero-{left,right}.json
- Updated preset metadata with Hornero branding (🏠 icon)

**Additional Changes:**
- Added github-copilot-cli to AI tools installation
- Fixed QML2_IMPORT_PATH in Hyprland environment.conf to include Hornero plugins
- Updated dots-quickshell script with correct QML import paths

**Build Verification:**
✅ CMake configuration successful
✅ Build compilation: 81/81 targets
✅ QML modules created: Hornero, Hornero.Internal, Hornero.Models, Hornero.Services
✅ Quickshell runtime verified

Inspired-by: https://github.com/caelestia-dots/shell
License: GPL-3.0 (for quickshell component)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: ulises-jeremias

README.md

@@ -267,6 +267,20 @@ We welcome all contributions! 🎉
 
 ---
 
+## 🙏 Credits & Attribution
+
+### Quickshell Desktop Shell
+
+The **Quickshell** implementation in HorneroConfig was highly inspired by and adapted from the amazing work of the [**caelestia-dots/shell**](https://github.com/caelestia-dots/shell) project by [@soramane](https://github.com/soramane).
+
+- **Original Project**: [caelestia-dots/shell](https://github.com/caelestia-dots/shell)
+- **License**: GNU General Public License v3.0 (GPL-3.0)
+- **What we adapted**: UI/UX design, desktop shell architecture, C++ plugin structure
+
+The original GPL-3.0 license is preserved in `home/dot_config/quickshell/LICENSE`. We are deeply grateful for the beautiful and functional desktop shell that inspired our implementation.
+
+---
+
 <div align="center">
 
 ### 💝 Show Your Support

home/.chezmoiscripts/linux/run_onchange_before_install-ai-tools.sh.tmpl

@@ -65,9 +65,10 @@ if command -v yay >/dev/null 2>&1; then
     cursor-bin \
     claude-code-stable \
     pi-coding-agent \
-    llmfit-bin
+    llmfit-bin \
+    github-copilot-cli
 else
-  warn "yay is not installed. Install VSCode/Cursor/Claude/pi/llmfit manually."
+  warn "yay is not installed. Install VSCode/Cursor/Claude/pi/llmfit/github-copilot-cli manually."
 fi
 
 pull_ollama_models_if_available

home/dot_config/hypr/hyprland.conf.d/environment.conf

@@ -35,7 +35,7 @@ env = XCURSOR_SIZE,24
 env = XCURSOR_THEME,elementary
 
 # Quickshell runtime discovery (Horeno plugin + bundled QML modules)
-env = QML2_IMPORT_PATH,$HOME/.local/lib/quickshell/qml:$HOME/.config/quickshell
+env = QML2_IMPORT_PATH,$HOME/.local/usr/lib/qt6/qml:$HOME/.local/lib/quickshell/qml:$HOME/.config/quickshell
 env = QS_PLUGIN_PATH,$HOME/.local/lib/quickshell
 
 # ============================================================================

home/dot_config/quickshell/CMakeLists.txt

@@ -26,7 +26,7 @@ endif()
 
 string(REGEX REPLACE "^v" "" VERSION "${VERSION}")
 
-project(caelestia-shell VERSION ${VERSION} LANGUAGES CXX)
+project(hornero-shell VERSION ${VERSION} LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
@@ -35,9 +35,9 @@ set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
 
 set(DISTRIBUTOR "Unset" CACHE STRING "Distributor")
 set(ENABLE_MODULES "extras;plugin;shell" CACHE STRING "Modules to build/install")
-set(INSTALL_LIBDIR "usr/lib/caelestia" CACHE STRING "Library install dir")
+set(INSTALL_LIBDIR "usr/lib/hornero" CACHE STRING "Library install dir")
 set(INSTALL_QMLDIR "usr/lib/qt6/qml" CACHE STRING "QML install dir")
-set(INSTALL_QSCONFDIR "etc/xdg/quickshell/caelestia" CACHE STRING "Quickshell config install dir")
+set(INSTALL_QSCONFDIR "etc/xdg/quickshell/hornero" CACHE STRING "Quickshell config install dir")
 
 add_compile_options(
     -Wall -Wextra -Wpedantic -Wshadow -Wconversion

home/dot_config/quickshell/LICENSE

@@ -1,4 +1,20 @@
-                    GNU GENERAL PUBLIC LICENSE
+                    ================================================================================
+ATTRIBUTION NOTICE
+================================================================================
+
+This Quickshell implementation in HorneroConfig is adapted from and inspired by
+the caelestia-dots/shell project:
+
+    Original Project: https://github.com/caelestia-dots/shell
+    Original Author:  soramane (https://github.com/soramane)
+    Original License: GNU General Public License v3.0
+
+The original work is licensed under the GPL-3.0 license (below), and our
+modifications and adaptations maintain the same license as required.
+
+================================================================================
+
+GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>