feat: add form components and UI elements for enhanced user interaction

- Introduced Form, FormField, FormItem, FormLabel, FormControl, FormDescription, FormMessage components for structured form handling.
- Added Input, Textarea, and Select components for user input.
- Implemented Label and Separator components for better UI organization.
- Created Skeleton component for loading states.
- Developed Toast and Toaster components for user notifications.
- Integrated useToast hook for managing toast notifications.
- Established AI analysis functionality with analyzeJournalWithLocalAI.
- Set up Dexie for local database management with Journal and Task models.
- Configured Supabase client for server-side and browser-side interactions.
- Defined database schema for journals, tasks, chat sessions, and messages with Row Level Security policies.

Co-authored-by: Copilot <copilot@github.com>

app/login/actions.ts

@@ -0,0 +1,42 @@
+'use server'
+
+import { revalidatePath } from 'next/cache'
+import { redirect } from 'next/navigation'
+import { createClient } from '@/lib/supabase/server'
+
+export async function login(formData: FormData) {
+  const supabase = await createClient()
+
+  const data = {
+    email: formData.get('email') as string,
+    password: formData.get('password') as string,
+  }
+
+  const { error } = await supabase.auth.signInWithPassword(data)
+
+  if (error) {
+    // Ideally, pass this error to the UI via URL params or state
+    redirect('/login?error=true')
+  }
+
+  revalidatePath('/', 'layout')
+  redirect('/')
+}
+
+export async function signup(formData: FormData) {
+  const supabase = await createClient()
+
+  const data = {
+    email: formData.get('email') as string,
+    password: formData.get('password') as string,
+  }
+
+  const { error } = await supabase.auth.signUp(data)
+
+  if (error) {
+    redirect('/login?error=true')
+  }
+
+  revalidatePath('/', 'layout')
+  redirect('/')
+}