feat: implement Stats endpoints for web dashboard

decnet/web/api.py

@@ -123,3 +123,14 @@ async def get_logs(
         "offset": offset,
         "data": logs
     }
+
+
+class StatsResponse(BaseModel):
+    total_logs: int
+    unique_attackers: int
+    active_deckies: int
+
+
+@app.get("/api/v1/stats", response_model=StatsResponse)
+async def get_stats(current_user: str = Depends(get_current_user)) -> dict[str, Any]:
+    return await repo.get_stats_summary()

decnet/web/sqlite_repository.py

@@ -95,9 +95,14 @@ class SQLiteRepository(BaseRepository):
                 row = await cursor.fetchone()
                 unique_attackers: int = row["unique_attackers"] if row else 0
 
+            async with db.execute("SELECT COUNT(DISTINCT decky) as active_deckies FROM logs") as cursor:
+                row = await cursor.fetchone()
+                active_deckies: int = row["active_deckies"] if row else 0
+
             return {
                 "total_logs": total_logs,
-                "unique_attackers": unique_attackers
+                "unique_attackers": unique_attackers,
+                "active_deckies": active_deckies
             }
 
     async def get_user_by_username(self, username: str) -> Optional[dict[str, Any]]: