Add multiple entries per day, user management, reminders, and AI reflections

- Multiple entries per day: Home page now starts fresh, Save & New button
- Admin user management: Add/delete users, reset passwords, toggle admin
- Daily reminders: Browser notifications at configurable time
- AI reflections: Generate insights from entries using Claude API
- Remove cloud sync placeholder (already have user accounts)

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

src/lib/auth.ts

@@ -11,6 +11,7 @@ export interface AuthUser {
   id: string;
   email: string;
   name: string | null;
+  isAdmin: boolean;
 }
 
 export async function hashPassword(password: string): Promise<string> {
@@ -68,6 +69,7 @@ export async function getSession(): Promise<AuthUser | null> {
       userId: schema.users.id,
       email: schema.users.email,
       name: schema.users.name,
+      isAdmin: schema.users.isAdmin,
       expiresAt: schema.sessions.expiresAt,
     })
     .from(schema.sessions)
@@ -83,6 +85,7 @@ export async function getSession(): Promise<AuthUser | null> {
     id: result[0].userId,
     email: result[0].email,
     name: result[0].name,
+    isAdmin: result[0].isAdmin === 1,
   };
 }
 
@@ -122,6 +125,7 @@ export async function registerUser(
       id: userId,
       email: email.toLowerCase(),
       name: name || null,
+      isAdmin: false,
     },
   };
 }
@@ -154,6 +158,7 @@ export async function loginUser(
       id: user.id,
       email: user.email,
       name: user.name,
+      isAdmin: user.isAdmin === 1,
     },
     sessionId,
   };