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/modules/common/Persistent.qml

@@ -0,0 +1,49 @@
+pragma Singleton
+pragma ComponentBehavior: Bound
+import QtQuick
+import Quickshell
+import Quickshell.Io
+
+Singleton {
+    id: root
+    property alias states: persistentStatesJsonAdapter
+    property string fileDir: Directories.state
+    property string fileName: "states.json"
+    property string filePath: `${root.fileDir}/${root.fileName}`
+
+    FileView {
+        path: root.filePath
+
+        watchChanges: true
+        onFileChanged: reload()
+        onAdapterUpdated: {
+            writeAdapter()
+        }
+        onLoadFailed: error => {
+            console.log("Failed to load persistent states file:", error);
+            if (error == FileViewError.FileNotFound) {
+                writeAdapter();
+            }
+        }
+
+        adapter: JsonAdapter {
+            id: persistentStatesJsonAdapter
+            property JsonObject ai: JsonObject {
+                property string model
+                property real temperature: 0.5
+            }
+
+            property JsonObject sidebar: JsonObject {
+                property JsonObject bottomGroup: JsonObject {
+                    property bool collapsed: false
+                    property int tab: 0
+                }
+            }
+
+            property JsonObject booru: JsonObject {
+                property bool allowNsfw: false
+                property string provider: "yandere"
+            }
+        }
+    }
+}