feat: add homepage components and API for settings and spielplan options

- Introduced new Vue components for homepage teasers: HomeLinksTeaser, HomeSpielplanTeamWidget, HomeTrainingTeaser, and HomeVereinsmeisterschaftenTeaser.
- Created XML layout for tablet app window dump.
- Implemented API endpoints for fetching and updating homepage settings.
- Added API for retrieving spielplan options, including team extraction logic.

server/api/homepage/settings.get.js

@@ -0,0 +1,59 @@
+import { getUserFromToken } from '../../utils/auth.js'
+
+function normalizeConfig(config) {
+  if (!config || typeof config !== 'object') return undefined
+  const normalized = {
+    season: config.season ? String(config.season) : undefined,
+    teamName: config.teamName ? String(config.teamName) : undefined,
+    teamAgeGroup: config.teamAgeGroup ? String(config.teamAgeGroup) : undefined
+  }
+  if (!normalized.season && !normalized.teamName && !normalized.teamAgeGroup) {
+    return undefined
+  }
+  return normalized
+}
+
+function parseSections(value) {
+  if (!value || typeof value !== 'string') return []
+  try {
+    const parsed = JSON.parse(value)
+    if (!Array.isArray(parsed)) return []
+    return parsed
+      .filter(section => section?.id)
+      .map((section, index) => ({
+        key: section.key ? String(section.key) : `${String(section.id)}-${index}`,
+        id: String(section.id),
+        enabled: section.enabled !== false,
+        config: normalizeConfig(section.config)
+      }))
+  } catch {
+    return []
+  }
+}
+
+export default defineEventHandler(async (event) => {
+  const token = getCookie(event, 'auth_token') || getHeader(event, 'authorization')?.replace(/^Bearer\s+/i, '')
+  const user = token ? await getUserFromToken(token) : null
+
+  const rawCookieSections = getCookie(event, 'homepage_sections')
+  const cookieSections = parseSections(rawCookieSections)
+
+  const userSections = Array.isArray(user?.homepageSettings?.sections)
+    ? user.homepageSettings.sections
+        .filter(section => section?.id)
+        .map((section, index) => ({
+          key: section.key ? String(section.key) : `${String(section.id)}-${index}`,
+          id: String(section.id),
+          enabled: section.enabled !== false,
+          config: normalizeConfig(section.config)
+        }))
+    : []
+
+  const isLoggedIn = !!user
+
+  return {
+    isLoggedIn,
+    storage: isLoggedIn ? 'user' : 'cookie',
+    sections: isLoggedIn ? userSections : cookieSections
+  }
+})