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/routes/config.py

@@ -4,6 +4,7 @@ from config import (
     AUTH_ENABLED,
     AUTH_SCOPE,
     AUTH_TENANT_ID,
+    DEFAULT_PAGE_SIZE,
 )
 from fastapi import APIRouter
 
@@ -25,4 +26,5 @@ def auth_config():
 def features_config():
     return {
         "ai_features_enabled": AI_FEATURES_ENABLED,
+        "default_page_size": DEFAULT_PAGE_SIZE,
     }