fix(db): enforce metadata membership foreign keys

resources/sql/004_metadata_auth_management.sql

@@ -51,20 +51,3 @@ ALTER TABLE users
 CREATE UNIQUE INDEX IF NOT EXISTS idx_users_keycloak_id ON users(keycloak_id);
 CREATE INDEX IF NOT EXISTS idx_users_role ON users(role);
 CREATE INDEX IF NOT EXISTS idx_users_is_active ON users(is_active);
-
-CREATE TABLE IF NOT EXISTS user_project_membership (
-    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-    user_id UUID NOT NULL,
-    project_id UUID NOT NULL,
-    project_role VARCHAR(20) DEFAULT 'viewer' NOT NULL,
-    CONSTRAINT user_project_membership_role_check
-        CHECK (
-            project_role IN ('member', 'viewer')
-        ),
-    CONSTRAINT user_project_membership_unique UNIQUE (user_id, project_id)
-);
-
-CREATE INDEX IF NOT EXISTS idx_user_project_membership_user_id
-    ON user_project_membership(user_id);
-CREATE INDEX IF NOT EXISTS idx_user_project_membership_project_id
-    ON user_project_membership(project_id);

resources/sql/005_metadata_project_configuration.sql

@@ -25,7 +25,6 @@ CREATE TABLE IF NOT EXISTS projects (
 );
 
 CREATE INDEX IF NOT EXISTS idx_projects_status ON projects(status);
-CREATE INDEX IF NOT EXISTS idx_projects_code ON projects(code);
 
 DROP TRIGGER IF EXISTS update_projects_updated_at ON projects;
 CREATE TRIGGER update_projects_updated_at
@@ -33,6 +32,20 @@ CREATE TRIGGER update_projects_updated_at
     FOR EACH ROW
     EXECUTE FUNCTION update_updated_at_column();
 
+CREATE TABLE IF NOT EXISTS user_project_membership (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
+    project_role VARCHAR(20) DEFAULT 'viewer' NOT NULL,
+    CONSTRAINT user_project_membership_role_check
+        CHECK (project_role IN ('member', 'viewer')),
+    CONSTRAINT user_project_membership_unique UNIQUE (user_id, project_id)
+);
+
+-- The unique (user_id, project_id) index already supports user-side lookups.
+CREATE INDEX IF NOT EXISTS idx_user_project_membership_project_id
+    ON user_project_membership(project_id);
+
 CREATE TABLE IF NOT EXISTS project_databases (
     id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
     project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,