Eliminate gRPC server completely from Fly deployment

- Force cache bust to deploy updated start script without gRPC code server
- Remove DAGSTER_CODE_SERVER_HOST environment variable
- Add DAGSTER_WORKSPACE_FORCE_RELOAD to clear cached workspace config
- This resolves persistent anomstack_code location gRPC errors

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: andrewm4894

docker/Dockerfile.fly

@@ -1,7 +1,7 @@
 FROM python:3.12-slim
 
 # Cache busting argument (set during build to force fresh layers)
-ARG CACHEBUST=3
+ARG CACHEBUST=4
 
 # Use CACHEBUST to invalidate cache when needed (this layer changes when CACHEBUST changes)
 RUN echo "Cache bust: $CACHEBUST" > /tmp/cachebust

fly.toml

@@ -10,9 +10,10 @@ primary_region = "ord"  # Chicago - you can change this to your preferred region
 # Environment variables
 [env]
   DAGSTER_HOME = "/opt/dagster/dagster_home"
-  DAGSTER_CODE_SERVER_HOST = "localhost"
   DAGSTER_WEBSERVER_HOST = "0.0.0.0"
   DAGSTER_WEBSERVER_PORT = "3000"
+  # Force workspace reload to eliminate cached gRPC configuration
+  DAGSTER_WORKSPACE_FORCE_RELOAD = "true"
   ANOMSTACK_DUCKDB_PATH = "/data/anomstack.db"
   ANOMSTACK_MODEL_PATH = "local:///data/models"
   ANOMSTACK_TABLE_KEY = "metrics"