[bugfix] Keep Dreamverse Modal container warm

Author: Davids048

apps/dreamverse/scripts/modal/README.md

@@ -111,9 +111,12 @@ DREAMVERSE_MAX_AUTOTUNE=1 \
 
 ### Autoscaling and cost safety
 
-The current deployed script is capped with `max_containers=1`. If uncapped, concurrent requests could
-spawn multiple containers, while `max_containers=1` queued requests onto one
-container instead of multiplying B200 cost.
+The current deployed script keeps exactly one B200 container warm by setting
+`min_containers=1` and `max_containers=1`. `min_containers=1` prevents Modal
+from scaling the deployment down to zero after idle periods, which avoids paying
+the expensive torch-compile/startup-warmup cost again on the next request.
+`max_containers=1` caps concurrency so concurrent requests queue onto the warm
+container instead of spawning additional B200 containers and multiplying cost.
 
 ### Common gotchas
 

apps/dreamverse/scripts/modal/modal_app.py

@@ -39,6 +39,7 @@
     memory=65536,
     timeout=7200,
     startup_timeout=4800,
+    min_containers=1,
     max_containers=1,
     secrets=[modal.Secret.from_name("dreamverse-api-keys")],
     volumes={