Make flake self-contained - consolidate installer-replication

BREAKING CHANGE: Remove external dots-hyprland dependency

- Imported all essential configs from dots-hyprland/installer-replication
- Added complete configs/ directory with:
  - hypr/ - Hyprland configuration
  - quickshell/ - Quickshell widgets and config
  - applications/ - Application configurations
  - scripts/ - Utility scripts
  - matugen/ - Material You theming
- Updated flake.nix to use local ./configs instead of external repo
- Simplified update-flake script (removed external repo management)
- Updated README to reflect self-contained architecture
- All builds pass with local configurations

Benefits:
- No external repository dependencies
- Faster builds (no network dependencies)
- Version controlled configs in single repo
- Easier maintenance and development
- Complete installer replication in one place

configs/quickshell/services/ai/AiMessageData.qml

@@ -0,0 +1,21 @@
+import QtQuick;
+
+/**
+ * Represents a message in an AI conversation. (Kind of) follows the OpenAI API message structure.
+ */
+QtObject {
+    property string role
+    property string content
+    property string rawContent
+    property string model
+    property bool thinking: true
+    property bool done: false
+    property var annotations: []
+    property var annotationSources: []
+    property list<string> searchQueries: []
+    property string functionName
+    property var functionCall
+    property string functionResponse
+    property bool functionPending: false
+    property bool visibleToUser: true
+}