improved a lot of things

supabase/migrations/005_projects.sql

@@ -0,0 +1,26 @@
+-- Migration: 005 — projects
+-- A Project groups artboards for a specific application inside a workspace.
+-- Users connect their running app to a project (via app_url) and work
+-- on its artboards in the canvas.
+
+CREATE TABLE projects (
+  id           UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  workspace_id UUID NOT NULL REFERENCES workspaces(id) ON DELETE CASCADE,
+  name         TEXT NOT NULL,
+  description  TEXT,
+  app_url      TEXT,          -- e.g. https://localhost:3000 or https://staging.myapp.com
+  framework    TEXT,          -- e.g. 'react', 'next', 'vue', 'svelte'
+  created_at   TIMESTAMPTZ NOT NULL DEFAULT now(),
+  updated_at   TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX projects_workspace_idx ON projects(workspace_id);
+
+CREATE TRIGGER trg_projects_updated_at
+  BEFORE UPDATE ON projects
+  FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+
+-- Add optional project_id to artboards so artboards can be scoped to a project.
+-- Nullable: existing artboards without a project remain workspace-level.
+ALTER TABLE artboards ADD COLUMN IF NOT EXISTS project_id UUID REFERENCES projects(id) ON DELETE SET NULL;
+CREATE INDEX IF NOT EXISTS artboards_project_idx ON artboards(project_id);