CV-template subsystem: unify dirs + avatar, source interface, assembler/seeder tidy, prioritiser wiring (#82)

refactor(cvg-177): collapse api module duplication for cleanup-handler services; drop dedup

refactor(cvg-174): tidy assembler (2 queries, clock, recursive location) + atomic seeder upsert

refactor(cvg-173): put built-in template source behind BuiltInTemplateSource interface

feat(cvg-172): add profile avatar to creative-portfolio + minimal-clean templates

style(cvg-80): biome line-wrap on new test files

fix(cvg-123): skip lefthook install when git missing (unblocks docker production build)

test(api): add AppModule compile smoke test

refactor(CVG-88): fold @Args(id) into bundle.Completed(), drop ghost _id param

fix(CVG-88): use graphql-type-json scalar + regenerate schema.gql

fix(CVG-87): roll back AsyncJob row on dispatch failure

fix(docker): force-add apps/api manifest to .docker/.manifests/

feat(graphql): allow admin introspection in production via complexity plugin

feat(CVG-13): add cv variants data model and customisation pass