feat(amm/ui): add initial AMM UI module

amm-ui/Main.qml

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+import QtQuick 2.15
+import QtQuick.Controls 2.15
+import QtQuick.Layouts 1.15
+
+Item {
+  width: 400
+  height: 300
+
+  ColumnLayout {
+    anchors.centerIn: parent
+    spacing: 12
+
+    Text {
+      Layout.alignment: Qt.AlignHCenter
+      text: "Hello from ui_qml_example!"
+      font.pixelSize: 18
+    }
+
+    Button {
+      Layout.alignment: Qt.AlignHCenter
+      text: "Call Core Module"
+      onClicked: {
+        // The logos bridge is injected by the host application.
+        // Uncomment to call a backend module:
+        // var result = logos.callModule("my_module", "myMethod", ["arg"])
+        console.log("Button clicked")
+      }
+    }
+  }
+}

amm-ui/README.md

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+# AMM UI
+
+A QML UI application for the Automated Market Maker (AMM) program.
+
+See the [Logos QML UI App Tutorial](https://github.com/logos-co/logos-tutorial/blob/master/tutorial-qml-ui-app.md) for more information.
+
+## Setup
+
+This project requires Nix with experimental features enabled. If you haven't already, enable them permanently:
+
+```bash
+mkdir -p ~/.config/nix && echo "experimental-features = nix-command flakes" >> ~/.config/nix/nix.conf
+```
+
+## Running the UI
+
+Start the UI with:
+
+```bash
+nix run .
+```
+
+This builds and runs the application in development mode.
+
+## Updating Dependencies
+
+To update the pinned versions of dependencies in `flake.lock`:
+
+```bash
+nix flake update
+```

amm-ui/flake.nix

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+{
+  description = "Logos QML UI Module — replace with your description";
+
+  inputs = {
+    logos-module-builder.url = "github:logos-co/logos-module-builder";
+  };
+
+  outputs = inputs@{ logos-module-builder, ... }:
+    logos-module-builder.lib.mkLogosQmlModule {
+      src = ./.;
+      configFile = ./metadata.json;
+      flakeInputs = inputs;
+    };
+}

amm-ui/metadata.json

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+{
+  "name": "amm_ui",
+  "version": "0.1.0",
+  "type": "ui_qml",
+  "category": "amm",
+  "description": "UI module for the AMM program",
+  "view": "Main.qml",
+  "icon": "icons/amm.png",
+  "dependencies": [],
+
+  "nix": {
+    "packages": {
+      "build": [],
+      "runtime": []
+    },
+    "external_libraries": [],
+    "cmake": {
+      "find_packages": [],
+      "extra_sources": [],
+      "extra_include_dirs": [],
+      "extra_link_libraries": []
+    }
+  }
+}