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>

components/ui/textarea.tsx

@@ -0,0 +1,18 @@
+import * as React from "react"
+
+import { cn } from "@/lib/utils"
+
+function Textarea({ className, ...props }: React.ComponentProps<"textarea">) {
+  return (
+    <textarea
+      data-slot="textarea"
+      className={cn(
+        "flex field-sizing-content min-h-16 w-full rounded-lg border border-input bg-transparent px-2.5 py-2 text-base transition-colors outline-none placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 disabled:cursor-not-allowed disabled:bg-input/50 disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 md:text-sm dark:bg-input/30 dark:disabled:bg-input/80 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export { Textarea }