feat(api): add Note API routes for CRUD operations

Add REST endpoints for notes under /api/decks/:deckId/notes:
- GET / - List notes in deck
- POST / - Create note with auto-generated cards
- GET /:noteId - Get note with field values
- PUT /:noteId - Update note field values
- DELETE /:noteId - Delete note and its cards (cascade)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/src/server/index.ts b/src/server/index.ts
index 91f76fb..52eab67 100644
--- a/src/server/index.ts
+++ b/src/server/index.ts
@@ -2,7 +2,15 @@ import { serve } from "@hono/node-server";
 import { Hono } from "hono";
 import { logger } from "hono/logger";
 import { createCorsMiddleware, errorHandler } from "./middleware/index.js";
-import { auth, cards, decks, noteTypes, study, sync } from "./routes/index.js";
+import {
+	auth,
+	cards,
+	decks,
+	notes,
+	noteTypes,
+	study,
+	sync,
+} from "./routes/index.js";
 
 const app = new Hono();
 
@@ -21,6 +29,7 @@ const routes = app
 	.route("/api/auth", auth)
 	.route("/api/decks", decks)
 	.route("/api/decks/:deckId/cards", cards)
+	.route("/api/decks/:deckId/notes", notes)
 	.route("/api/decks/:deckId/study", study)
 	.route("/api/note-types", noteTypes)
 	.route("/api/sync", sync);