feat: journal dashboard widgets, agent polish, and edit-mode live previews

Journal dashboard widgets and quick-add; rich-text quick-add dialogs.

Dashboard draft sync for live edit previews; assistant bubble + API tools.

Journal UX: stress slider, mood grid, query cap fix.

src/app/d/[slug]/page.tsx

@@ -2,7 +2,8 @@ import { notFound } from "next/navigation";
 import { Suspense } from "react";
 import { getCurrentSession } from "@/lib/session";
 import { parseDashboardLayout, widgetContentKey } from "@/lib/dashboard";
-import { computeDefaultLayout } from "@/lib/dashboard.server";
+import { readEditorDraftLayout } from "@/lib/dashboard-editor-draft";
+import { computeDefaultLayout, normalizeDashboardLayout } from "@/lib/dashboard.server";
 import { getWidget, getWidgetMetas } from "@/modules/_core";
 import { getDashboardBySlug } from "@/app/d/actions";
 import { DashboardEditor } from "@/components/dashboard-editor";
@@ -49,7 +50,9 @@ export default async function DashboardPage({
   const dashboard = await getDashboardBySlug(slug);
   if (!dashboard) notFound();
 
-  const layout = parseDashboardLayout(dashboard.layout) ?? computeDefaultLayout();
+  const storedLayout = parseDashboardLayout(dashboard.layout) ?? computeDefaultLayout();
+  const draftLayout = isEditing ? await readEditorDraftLayout(dashboard.id) : null;
+  const layout = normalizeDashboardLayout(draftLayout ?? storedLayout);
   const widgetMetas = getWidgetMetas();
 
   if (isEditing) {
@@ -67,6 +70,7 @@ export default async function DashboardPage({
 
     return (
       <DashboardEditor
+        key={`${dashboard.id}:${JSON.stringify(layout.widgets)}`}
         dashboard={{ id: dashboard.id, name: dashboard.name, slug: dashboard.slug }}
         layout={layout}
         widgetMetas={widgetMetas}