DUNGEONS-34: implement Webka local streaming app

Co-authored-by: multica-agent <github@multica.ai>

frontend/components/GlassButton.vue

@@ -0,0 +1,31 @@
+<script setup lang="ts">
+withDefaults(
+  defineProps<{
+    variant?: "primary" | "danger" | "quiet";
+    type?: "button" | "submit";
+    disabled?: boolean;
+  }>(),
+  { variant: "quiet", type: "button" },
+);
+const ripple = ref(false);
+let timer: ReturnType<typeof setTimeout>;
+function press() {
+  ripple.value = false;
+  requestAnimationFrame(() => {
+    ripple.value = true;
+    timer = setTimeout(() => (ripple.value = false), 500);
+  });
+}
+onBeforeUnmount(() => clearTimeout(timer));
+</script>
+<template>
+  <button
+    :type="type"
+    :disabled="disabled"
+    class="glass-button"
+    :class="[variant, { ripple }]"
+    @pointerdown="press"
+  >
+    <slot />
+  </button>
+</template>