Finalize schema and add deployment workflow

supabase_schema.sql

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+-- Dyzulk Portfolio & Blog Schema (Final Fix)
+-- We renamed the constraints to avoid the "already exists" error completely.
+
+-- 1. CLEANUP (Just in case)
+drop table if exists public.posts cascade;
+drop table if exists public.projects cascade;
+drop table if exists public.profiles cascade;
+
+-- 2. POSTS TABLE
+create table public.posts (
+  id uuid not null default gen_random_uuid(),
+  title text not null,
+  slug text not null unique,
+  excerpt text null,
+  content text null,
+  cover_image text null,
+  tags text[] default '{}',
+  published boolean default false,
+  view_count integer default 0,
+  created_at timestamp with time zone not null default now(),
+  updated_at timestamp with time zone not null default now(),
+  constraint posts_pkey_new primary key (id) -- Renamed
+);
+
+-- 3. PROJECTS TABLE
+create table public.projects (
+  id uuid not null default gen_random_uuid(),
+  title text not null,
+  slug text not null unique,
+  description text null,
+  content text null,
+  cover_image text null,
+  gallery_images text[] default '{}',
+  tech_stack text[] default '{}',
+  demo_url text null,
+  repo_url text null,
+  featured boolean default false,
+  created_at timestamp with time zone not null default now(),
+  updated_at timestamp with time zone not null default now(),
+  constraint projects_pkey_new primary key (id) -- Renamed
+);
+
+-- 4. PROFILES TABLE
+create table public.profiles (
+  id uuid references auth.users not null,
+  full_name text null,
+  avatar_url text null,
+  bio text null,
+  updated_at timestamp with time zone,
+  constraint profiles_pkey_new primary key (id), -- Renamed
+  constraint profiles_auth_fk foreign key (id) references auth.users (id) on delete cascade -- Renamed to profiles_auth_fk
+);
+
+-- 5. ENABLE RLS
+alter table public.posts enable row level security;
+alter table public.projects enable row level security;
+alter table public.profiles enable row level security;
+
+-- 6. POLICIES
+create policy "Public posts reading" on public.posts for select using (true);
+create policy "Public projects reading" on public.projects for select using (true);
+create policy "Public profiles reading" on public.profiles for select using (true);
+
+create policy "Admin insert posts" on public.posts for insert to authenticated with check (true);
+create policy "Admin update posts" on public.posts for update to authenticated using (true);
+create policy "Admin delete posts" on public.posts for delete to authenticated using (true);
+
+create policy "Admin insert projects" on public.projects for insert to authenticated with check (true);
+create policy "Admin update projects" on public.projects for update to authenticated using (true);
+create policy "Admin delete projects" on public.projects for delete to authenticated using (true);
+
+create policy "User update own profile" on public.profiles for update to authenticated using (auth.uid() = id);
+create policy "User insert own profile" on public.profiles for insert to authenticated with check (auth.uid() = id);
+
+-- 7. INDEXES
+create index posts_slug_idx_new on public.posts (slug);
+create index projects_slug_idx_new on public.projects (slug);
+create index posts_tags_idx_new on public.posts using gin (tags);