perf: memo GridCard, fuse save fns, fix slash tab active color

memento-note/app/actions/cookie-consent.ts

@@ -0,0 +1,71 @@
+'use server'
+
+import { auth } from '@/auth'
+import { updateAISettings } from './ai-settings'
+import { getAISettings } from './ai-settings'
+import type { ConsentRecord } from '@/lib/consent/cookie-consent'
+
+/**
+ * Get cookie consent from database for authenticated users.
+ * Returns null for guests or when no DB preference exists.
+ */
+export async function getCookieConsentFromDB(): Promise<ConsentRecord | null> {
+  const session = await auth()
+
+  if (!session?.user?.id) {
+    return null
+  }
+
+  try {
+    const settings = await getAISettings(session.user.id)
+    // Only return consent if user has explicitly set it
+    // If anonymousAnalytics is undefined or false, treat as "no preference set"
+    if (settings.anonymousAnalytics === true) {
+      return {
+        version: 1,
+        necessary: true,
+        analytics: true,
+        marketing: false,
+        updatedAt: new Date().toISOString(),
+      }
+    }
+    // If explicitly false, return that too
+    if (settings.anonymousAnalytics === false) {
+      return {
+        version: 1,
+        necessary: true,
+        analytics: false,
+        marketing: false,
+        updatedAt: new Date().toISOString(),
+      }
+    }
+  } catch (error) {
+    console.error('[getCookieConsentFromDB] Failed to load:', error)
+  }
+
+  return null
+}
+
+/**
+ * Save cookie consent and sync to database for authenticated users.
+ *
+ * For logged-in users, this updates UserAISettings.anonymousAnalytics in the database.
+ * For guests, this no-ops silently (they rely on localStorage only).
+ *
+ * Call this from client components after setting local consent.
+ */
+export async function saveCookieConsent(consent: ConsentRecord) {
+  const session = await auth()
+
+  // Only sync to DB for authenticated users
+  if (session?.user?.id) {
+    try {
+      await updateAISettings({ anonymousAnalytics: consent.analytics })
+    } catch (error) {
+      console.error('[saveCookieConsent] Failed to sync to DB:', error)
+      // Don't throw — local consent is already set, DB sync is best-effort
+    }
+  }
+
+  return { success: true }
+}