fix(ci): skip auto-assign for Dependabot bot users (#15)

* test(tenant): update all existing tests for multi-tenancy support

Add tenant_id to all factory creations across unit and feature tests.
Replace local createAuth/setupProject helpers with global Pest helpers.
Fix CL17 stranger to share tenant with owner. Update MigrationTest unique
index assertions to reflect composite (tenant_id, code/identifier) indexes.
Set TenantManager in test setups that mix factory creates with HTTP calls
to prevent UNIQUE constraint violations on artifact sequence numbers.

* feat(tenant): add multi-tenancy support

  - Add Tenant model, factory, and management commands (create, list, enable, disable, delete)
  - Add BelongsToTenant concern and TenantManager service
  - Add EnsureTenantActive middleware
  - Add tenant migrations (tenants table, tenant_id columns, unique constraints, superadmins)
  - Rename role to position in project_members table
  - Update existing models, controllers, and commands for tenant scoping
  - Update tests for multi-tenancy compatibility

* fix(phpstan): remove unnecessary nullsafe on tenant->slug in UserListCommand

* fix(ci): add write permissions to auto-assign workflow for Dependabot PRs

* fix(ci): skip auto-assign for Dependabot PRs (bots cannot be assigned)

Author: arthur2jolly

.github/workflows/auto-assign.yml

@@ -11,6 +11,7 @@ permissions:
 jobs:
   assign:
     runs-on: ubuntu-latest
+    if: github.actor != 'dependabot[bot]'
     steps:
       - uses: actions/github-script@v7
         with: