feat(standards): fix F11-F16 and rebuild bundle (43 components) + trial findings

- F11 PopulateRule field_name/collection_name corrections
- F12 service adaptor update handles PopulatingRepository
- F13 nested-references section; F14 authless /users/me guidance
- F15 template ruff-clean; F16 stop vendoring .ruff_cache, ship .gitignore
- document --template-style in build_recipe/spec_first_routing; refresh collected
  openapi-first + standards bundle (12 modules, 43 components)
- add trial.md and trial_findings.md (F1-F16, re-trial A/B evidence)

standards/src/templates/app/init.py

@@ -4,7 +4,7 @@ Infrastructure initialization — connects MongoDB and wires all repos and servi
 Shared bootstrap for both the FastAPI app and the worker, guarded against
 repeated initialization via a module-level flag.
 """
-from typing import Any, Dict
+from typing import Any
 
 from config import settings
 from domain.item.ports.db import create_item_repo
@@ -13,11 +13,11 @@ from domain.job.ports.db import create_job_repo
 from domain.job.ports.service import get_job_service
 from infra.db.setup import setup_database, shutdown_database
 
-_resources: Dict[str, Any] = {}
+_resources: dict[str, Any] = {}
 _initialized: bool = False
 
 
-async def init() -> Dict[str, Any]:
+async def init() -> dict[str, Any]:
     """Connect MongoDB, wire all repos and services, and return the resources dict.
 
     Idempotent: repeated calls short-circuit and return the cached resources.