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/mcp/templates/app/infra/http_cache.py

@@ -23,8 +23,9 @@ Notes:
 """
 import hashlib
 import json
+from collections.abc import Callable
 from functools import wraps
-from typing import Any, Callable, Optional
+from typing import Any
 
 from fastapi import Request, Response
 from fastapi.encoders import jsonable_encoder
@@ -55,7 +56,7 @@ class HttpCacheStore:
 
         self._redis = Redis.from_url(url, decode_responses=decode_responses)
 
-    async def get(self, key: str) -> Optional[str]:
+    async def get(self, key: str) -> str | None:
         """Read the value stored at ``key``.
 
         Args:
@@ -173,7 +174,7 @@ def _cache_key(request: Request, generation: str = "0") -> str:
     return hashlib.sha256("|".join(parts).encode()).hexdigest()
 
 
-def cache_response(ttl: Optional[int] = None) -> Callable:
+def cache_response(ttl: int | None = None) -> Callable:
     """Decorate a GET-style route handler to cache its JSON response.
 
     Args:
@@ -203,7 +204,7 @@ def cache_response(ttl: Optional[int] = None) -> Callable:
                 return await func(*args, **kwargs)
 
             db_resources = getattr(request.app.state, "db_resources", None) or {}
-            store: Optional[HttpCacheStore] = db_resources.get("http_cache_store")
+            store: HttpCacheStore | None = db_resources.get("http_cache_store")
             if store is None:
                 return await func(*args, **kwargs)