feat(decks): add default note type setting per deckHEADmain

Allow each deck to specify a default note type that is auto-selected
when creating new notes. Includes DB schema migration, server API
updates, sync layer support, and UI for editing the default in the
deck settings modal.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

5 files changed, 19 insertions, 2 deletions

diff --git a/src/client/pages/DeckCardsPage.test.tsx b/src/client/pages/DeckCardsPage.test.tsx
index 58107d4..6e8f444 100644
--- a/src/client/pages/DeckCardsPage.test.tsx
+++ b/src/client/pages/DeckCardsPage.test.tsx
@@ -73,6 +73,7 @@ const mockDeck = {
 	id: "deck-1",
 	name: "Japanese Vocabulary",
 	description: "Common Japanese words",
+	defaultNoteTypeId: null,
 	dueCardCount: 0,
 	newCardCount: 0,
 	totalCardCount: 0,
diff --git a/src/client/pages/DeckCardsPage.tsx b/src/client/pages/DeckCardsPage.tsx
index 8c839da..b791eac 100644
--- a/src/client/pages/DeckCardsPage.tsx
+++ b/src/client/pages/DeckCardsPage.tsx
@@ -22,7 +22,12 @@ import {
 } from "react";
 import { useDebouncedCallback } from "use-debounce";
 import { Link, useParams } from "wouter";
-import { type Card, cardsByDeckAtomFamily, deckByIdAtomFamily } from "../atoms";
+import {
+	type Card,
+	cardsByDeckAtomFamily,
+	type Deck,
+	deckByIdAtomFamily,
+} from "../atoms";
 import { CreateNoteModal } from "../components/CreateNoteModal";
 import { DeleteCardModal } from "../components/DeleteCardModal";
 import { DeleteNoteModal } from "../components/DeleteNoteModal";
@@ -638,6 +643,9 @@ export function DeckCardsPage() {
 			<CreateNoteModal
 				isOpen={isCreateModalOpen}
 				deckId={deckId}
+				defaultNoteTypeId={
+					queryClient.getQueryData<Deck>(["decks", deckId])?.defaultNoteTypeId
+				}
 				onClose={() => setIsCreateModalOpen(false)}
 				onNoteCreated={handleCardMutation}
 			/>
diff --git a/src/client/pages/DeckDetailPage.test.tsx b/src/client/pages/DeckDetailPage.test.tsx
index bb9d80c..c473275 100644
--- a/src/client/pages/DeckDetailPage.test.tsx
+++ b/src/client/pages/DeckDetailPage.test.tsx
@@ -60,6 +60,7 @@ const mockDeck = {
 	id: "deck-1",
 	name: "Japanese Vocabulary",
 	description: "Common Japanese words",
+	defaultNoteTypeId: null,
 	dueCardCount: 0,
 	newCardCount: 0,
 	totalCardCount: 0,
diff --git a/src/client/pages/DeckDetailPage.tsx b/src/client/pages/DeckDetailPage.tsx
index 0a02051..99e919b 100644
--- a/src/client/pages/DeckDetailPage.tsx
+++ b/src/client/pages/DeckDetailPage.tsx
@@ -8,7 +8,7 @@ import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { useAtomValue } from "jotai";
 import { Suspense, useState } from "react";
 import { Link, useParams } from "wouter";
-import { cardsByDeckAtomFamily, deckByIdAtomFamily } from "../atoms";
+import { cardsByDeckAtomFamily, type Deck, deckByIdAtomFamily } from "../atoms";
 import { CreateNoteModal } from "../components/CreateNoteModal";
 import { ErrorBoundary } from "../components/ErrorBoundary";
 import { LoadingSpinner } from "../components/LoadingSpinner";
@@ -204,6 +204,9 @@ export function DeckDetailPage() {
 			<CreateNoteModal
 				isOpen={isCreateModalOpen}
 				deckId={deckId}
+				defaultNoteTypeId={
+					queryClient.getQueryData<Deck>(["decks", deckId])?.defaultNoteTypeId
+				}
 				onClose={() => setIsCreateModalOpen(false)}
 				onNoteCreated={() => {
 					queryClient.invalidateQueries({
diff --git a/src/client/pages/HomePage.test.tsx b/src/client/pages/HomePage.test.tsx
index de7a768..adcc651 100644
--- a/src/client/pages/HomePage.test.tsx
+++ b/src/client/pages/HomePage.test.tsx
@@ -92,6 +92,7 @@ const mockDecks = [
 		id: "deck-1",
 		name: "Japanese Vocabulary",
 		description: "Common Japanese words",
+		defaultNoteTypeId: null,
 		dueCardCount: 5,
 		newCardCount: 0,
 		totalCardCount: 100,
@@ -103,6 +104,7 @@ const mockDecks = [
 		id: "deck-2",
 		name: "Spanish Verbs",
 		description: null,
+		defaultNoteTypeId: null,
 		dueCardCount: 0,
 		newCardCount: 0,
 		totalCardCount: 0,
@@ -258,6 +260,7 @@ describe("HomePage", () => {
 			id: "deck-1",
 			name: "No Description Deck",
 			description: null,
+			defaultNoteTypeId: null,
 			dueCardCount: 0,
 			newCardCount: 0,
 			totalCardCount: 0,
@@ -340,6 +343,7 @@ describe("HomePage", () => {
 				id: "deck-new",
 				name: "New Deck",
 				description: "A new deck",
+				defaultNoteTypeId: null,
 				dueCardCount: 0,
 				newCardCount: 0,
 				totalCardCount: 0,