feat: clickable pills, configurable page size, CQRE.NET branding

- Service/category pills are now clickable: click to filter by that service
- Result pills (Success, Failure, etc.) are now clickable: click to filter by that result
- Click again to clear the filter (toggle behavior)
- Change default page size from 100 to 25
- Add DEFAULT_PAGE_SIZE config (env var, default 25), exposed via /api/config/features
- Change footer brand from CQRE to CQRE.NET
- Add pill--clickable hover styles
- Bump CSS cache-buster to v=10

backend/config.py

@@ -60,6 +60,9 @@ class Settings(BaseSettings):
     # Redis (caching + async job queue)
     REDIS_URL: str = "redis://localhost:6379/0"
 
+    # UI defaults
+    DEFAULT_PAGE_SIZE: int = 25
+
 
 _settings = Settings()
 
@@ -100,3 +103,4 @@ PRIVACY_SENSITIVE_OPERATIONS = {o.strip() for o in _settings.PRIVACY_SENSITIVE_O
 PRIVACY_SERVICE_ROLES = {r.strip() for r in _settings.PRIVACY_SERVICE_ROLES.split(",") if r.strip()}
 
 REDIS_URL = _settings.REDIS_URL
+DEFAULT_PAGE_SIZE = _settings.DEFAULT_PAGE_SIZE