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/components/quick-add/dialogs/calendar-event-create-dialog.tsx

@@ -1,5 +1,6 @@
 "use client";
 
+import dynamic from "next/dynamic";
 import { useEffect, useMemo, useState, useTransition } from "react";
 import { Button } from "@/components/ui/button";
 import {
@@ -20,8 +21,21 @@ import {
   SelectValue,
 } from "@/components/ui/select";
 import { createEvent } from "@/modules/calendar/server/actions";
+import { richTextToPlainText } from "@/components/rich-text";
 import { listCalendars, type CalendarDto } from "@/modules/calendar/server/queries";
 
+const RichTextEditor = dynamic(
+  () => import("@/components/rich-text/rich-text-editor").then((mod) => mod.RichTextEditor),
+  {
+    ssr: false,
+    loading: () => (
+      <div className="min-h-24 rounded-lg border border-input px-3 py-2 text-sm text-muted-foreground animate-pulse">
+        Loading editor…
+      </div>
+    ),
+  },
+);
+
 type Props = {
   open: boolean;
   onOpenChange: (open: boolean) => void;
@@ -30,7 +44,7 @@ type Props = {
 export function CalendarEventCreateDialog({ open, onOpenChange }: Props) {
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="sm:max-w-md">
+      <DialogContent className="sm:max-w-2xl">
         {open ? <CalendarEventCreateForm onDone={() => onOpenChange(false)} /> : null}
       </DialogContent>
     </Dialog>
@@ -71,7 +85,7 @@ function CalendarEventCreateForm({ onDone }: { onDone: () => void }) {
         endAt: new Date(endAt),
         allDay: false,
         location: location || null,
-        notes: notes || null,
+        notes: richTextToPlainText(notes) ? notes : null,
         remindMinutesBefore: remind ? 30 : null,
       });
       onDone();
@@ -146,13 +160,15 @@ function CalendarEventCreateForm({ onDone }: { onDone: () => void }) {
             onChange={(e) => setLocation(e.target.value)}
           />
         </div>
-        <div className="space-y-1.5">
+        <div className="space-y-1.5 min-w-0">
           <Label htmlFor="qa-event-notes">Notes</Label>
-          <textarea
+          <RichTextEditor
             id="qa-event-notes"
-            className="min-h-16 w-full rounded-lg border border-input bg-transparent px-2.5 py-2 text-sm outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50"
+            aria-label="Notes"
             value={notes}
-            onChange={(e) => setNotes(e.target.value)}
+            onChange={setNotes}
+            disabled={isPending}
+            placeholder="Add details…"
           />
         </div>
         <label className="flex items-center gap-2 text-sm">