fix: skip expensive platform stats on homepage

The /stats endpoint is called on both the homepage and the server stats
page, but only the stats page displays metadata coverage and region
breakdown. Add an `include_platform_stats` query param (default false)
so the homepage avoids the expensive per-platform queries.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/endpoints/responses/stats.py

@@ -11,7 +11,7 @@ class RegionBreakdownItem(TypedDict):
     count: int
 
 
-class StatsReturn(TypedDict):
+class StatsReturn(TypedDict, total=False):
     PLATFORMS: int
     ROMS: int
     SAVES: int

backend/endpoints/stats.py

@@ -9,20 +9,24 @@ router = APIRouter(
 
 
 @router.get("")
-def stats() -> StatsReturn:
+def stats(include_platform_stats: bool = False) -> StatsReturn:
     """Endpoint to return the current RomM stats
 
     Returns:
         dict: Dictionary with all the stats
     """
 
-    return {
+    result: StatsReturn = {
         "PLATFORMS": db_stats_handler.get_platforms_count(),
         "ROMS": db_stats_handler.get_roms_count(),
         "SAVES": db_stats_handler.get_saves_count(),
         "STATES": db_stats_handler.get_states_count(),
         "SCREENSHOTS": db_stats_handler.get_screenshots_count(),
         "TOTAL_FILESIZE_BYTES": db_stats_handler.get_total_filesize(),
-        "METADATA_COVERAGE": db_stats_handler.get_metadata_coverage_by_platform(),
-        "REGION_BREAKDOWN": db_stats_handler.get_region_breakdown_by_platform(),
     }
+
+    if include_platform_stats:
+        result["METADATA_COVERAGE"] = db_stats_handler.get_metadata_coverage_by_platform()
+        result["REGION_BREAKDOWN"] = db_stats_handler.get_region_breakdown_by_platform()
+
+    return result

frontend/src/views/Settings/ServerStats.vue

@@ -18,7 +18,7 @@ const stats = ref({
 });
 
 onBeforeMount(() => {
-  api.get("/stats").then(({ data }) => {
+  api.get("/stats", { params: { include_platform_stats: true } }).then(({ data }) => {
     stats.value = data;
   });
 });