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>

supabase/schema.sql

@@ -0,0 +1,123 @@
+-- Enable necessary extensions
+create extension if not exists "uuid-ossp";
+
+-- 1. Create journals table
+create table public.journals (
+  id uuid default uuid_generate_v4() primary key,
+  user_id uuid references auth.users(id) on delete cascade not null,
+  date timestamp with time zone default timezone('utc'::text, now()) not null,
+  mood text not null,
+  energy smallint not null,
+  content text not null,
+  ai_tags text[] default array[]::text[],
+  ai_sentiment_score numeric,
+  ai_summary text,
+  ai_reflection text,
+  analysis_status text default 'pending'::text,
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
+  updated_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- 2. Create tasks table
+create table public.tasks (
+  id uuid default uuid_generate_v4() primary key,
+  user_id uuid references auth.users(id) on delete cascade not null,
+  date timestamp with time zone default timezone('utc'::text, now()) not null,
+  title text not null,
+  description text,
+  status text default 'todo'::text,
+  ai_generated boolean default false,
+  source_journal_id uuid references public.journals(id) on delete set null,
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
+  updated_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- 3. Create chat_sessions table
+create table public.chat_sessions (
+  id uuid default uuid_generate_v4() primary key,
+  user_id uuid references auth.users(id) on delete cascade not null,
+  title text not null,
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
+  updated_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- 4. Create chat_messages table
+create table public.chat_messages (
+  id uuid default uuid_generate_v4() primary key,
+  session_id uuid references public.chat_sessions(id) on delete cascade not null,
+  role text not null,
+  content text not null,
+  context_journal_ids uuid[] default array[]::uuid[],
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- RLS (Row Level Security) Policies
+alter table public.journals enable row level security;
+alter table public.tasks enable row level security;
+alter table public.chat_sessions enable row level security;
+alter table public.chat_messages enable row level security;
+
+-- Journals Policies
+create policy "Users can view their own journals." on public.journals
+  for select using (auth.uid() = user_id);
+create policy "Users can insert their own journals." on public.journals
+  for insert with check (auth.uid() = user_id);
+create policy "Users can update their own journals." on public.journals
+  for update using (auth.uid() = user_id);
+create policy "Users can delete their own journals." on public.journals
+  for delete using (auth.uid() = user_id);
+
+-- Tasks Policies
+create policy "Users can view their own tasks." on public.tasks
+  for select using (auth.uid() = user_id);
+create policy "Users can insert their own tasks." on public.tasks
+  for insert with check (auth.uid() = user_id);
+create policy "Users can update their own tasks." on public.tasks
+  for update using (auth.uid() = user_id);
+create policy "Users can delete their own tasks." on public.tasks
+  for delete using (auth.uid() = user_id);
+
+-- Chat Sessions Policies
+create policy "Users can view their own chat sessions." on public.chat_sessions
+  for select using (auth.uid() = user_id);
+create policy "Users can insert their own chat sessions." on public.chat_sessions
+  for insert with check (auth.uid() = user_id);
+create policy "Users can update their own chat sessions." on public.chat_sessions
+  for update using (auth.uid() = user_id);
+create policy "Users can delete their own chat sessions." on public.chat_sessions
+  for delete using (auth.uid() = user_id);
+
+-- Chat Messages Policies
+-- Assuming users can only access messages in their own sessions
+create policy "Users can view their own chat messages." on public.chat_messages
+  for select using (
+    exists (
+      select 1 from public.chat_sessions
+      where chat_sessions.id = chat_messages.session_id
+      and chat_sessions.user_id = auth.uid()
+    )
+  );
+create policy "Users can insert their own chat messages." on public.chat_messages
+  for insert with check (
+    exists (
+      select 1 from public.chat_sessions
+      where chat_sessions.id = session_id
+      and chat_sessions.user_id = auth.uid()
+    )
+  );
+create policy "Users can update their own chat messages." on public.chat_messages
+  for update using (
+    exists (
+      select 1 from public.chat_sessions
+      where chat_sessions.id = session_id
+      and chat_sessions.user_id = auth.uid()
+    )
+  );
+create policy "Users can delete their own chat messages." on public.chat_messages
+  for delete using (
+    exists (
+      select 1 from public.chat_sessions
+      where chat_sessions.id = session_id
+      and chat_sessions.user_id = auth.uid()
+    )
+  );