feat: 1-to-1 message render + web data-lake backend

frontend/src/lib/stores/ui.svelte.ts

@@ -0,0 +1,39 @@
+export type RightPanel =
+  | "profile"
+  | "search"
+  | "versions"
+  | "reactions"
+  | "links"
+  | "annotations"
+  | "jobs"
+  | "presence"
+  | "stories"
+  | "policy";
+
+function createUi() {
+  let rightPanel = $state<RightPanel | null>(null);
+  let leftColumnOpen = $state(true);
+
+  return {
+    get rightPanel() {
+      return rightPanel;
+    },
+    get leftColumnOpen() {
+      return leftColumnOpen;
+    },
+    openPanel(panel: RightPanel) {
+      rightPanel = panel;
+    },
+    closePanel() {
+      rightPanel = null;
+    },
+    toggleLeftColumn() {
+      leftColumnOpen = !leftColumnOpen;
+    },
+    setLeftColumn(open: boolean) {
+      leftColumnOpen = open;
+    },
+  };
+}
+
+export const ui = createUi();