fix(docker-compose): remove redundant langfuse-web from infra

langfuse-web in docker-compose.infra.yml is a dead duplicate of
langfuse in docker-compose.yml (same image, same port 3001:3000).
Having both causes a port-bind conflict when compose merges the
include: namespace — one of the two containers will fail to start.
Remove it; the canonical langfuse service lives in the main file
where it belongs alongside platform/canvas.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docker-compose.infra.yml

@@ -110,29 +110,6 @@ services:
     ports:
       - "8233:8080"
 
-  # digest-pinned 2026-05-10 (sha256:e7aafd3ccf721821b40f8b2251220b4bb8af5e4877b5c5a8846af5b3318aaf1d, linux/amd64)
-  langfuse-web:
-    image: langfuse/langfuse@sha256:e7aafd3ccf721821b40f8b2251220b4bb8af5e4877b5c5a8846af5b3318aaf1d
-    depends_on:
-      langfuse-clickhouse:
-        condition: service_healthy
-      langfuse-db-init:
-        condition: service_completed_successfully
-    environment:
-      DATABASE_URL: postgres://${POSTGRES_USER:-dev}:${POSTGRES_PASSWORD:-dev}@postgres:5432/langfuse
-      # Langfuse v2 expects the HTTP interface (port 8123). The previous
-      # clickhouse://...:9000 native-protocol URL is rejected with
-      # "ClickHouse URL protocol must be either http or https".
-      CLICKHOUSE_URL: http://langfuse-clickhouse:8123
-      CLICKHOUSE_MIGRATION_URL: clickhouse://langfuse-clickhouse:9000
-      CLICKHOUSE_USER: langfuse
-      CLICKHOUSE_PASSWORD: ${CLICKHOUSE_PASSWORD:-langfuse-dev}
-      NEXTAUTH_SECRET: ${LANGFUSE_SECRET:-changeme-langfuse-secret}
-      NEXTAUTH_URL: http://localhost:3001
-      SALT: ${LANGFUSE_SALT:-changeme-langfuse-salt}
-    ports:
-      - "3001:3000"
-
 networks:
   default:
     name: molecule-core-net