fix: calendar test failures + storage lint error

- Fix external-calendars tests: add svelte-i18n mock for toast i18n
- Fix useDragToCreate test: add DEFAULT_EVENT_DURATION_MINUTES mock
- Fix storage server unused variable lint error

Calendar: 151/151 tests now pass (0 failures)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/calendar/apps/server/package.json

@@ -0,0 +1,17 @@
+{
+	"name": "@calendar/server",
+	"version": "0.1.0",
+	"private": true,
+	"type": "module",
+	"scripts": {
+		"dev": "bun run --watch src/index.ts",
+		"start": "bun run src/index.ts"
+	},
+	"dependencies": {
+		"@manacore/shared-hono": "workspace:*",
+		"hono": "^4.7.0"
+	},
+	"devDependencies": {
+		"typescript": "^5.9.3"
+	}
+}