Fix Render deployment: move db:migrate to preDeployCommand

- Remove db:migrate from build script (database not accessible during build)
- Add preDeployCommand for migrations (runs at deploy time)
- Remove explicit database names from cache/queue/cable (use URL only)
- Fixes: 'could not translate host name' error on Render

Author: sbafsk

bin/render-build.sh

@@ -5,4 +5,5 @@ set -o errexit
 bundle install
 bin/rails assets:precompile
 bin/rails assets:clean
-bin/rails db:migrate
+
+# NOTE: db:migrate moved to startCommand - database not available during build

config/database.yml

@@ -92,15 +92,12 @@ production:
   cache:
     <<: *primary_production
     url: <%= ENV["CACHE_DATABASE_URL"] || ENV["DATABASE_URL"] %>
-    database: task_tracker_production_cache
     migrations_paths: db/cache_migrate
   queue:
     <<: *primary_production
     url: <%= ENV["QUEUE_DATABASE_URL"] || ENV["DATABASE_URL"] %>
-    database: task_tracker_production_queue
     migrations_paths: db/queue_migrate
   cable:
     <<: *primary_production
     url: <%= ENV["CABLE_DATABASE_URL"] || ENV["DATABASE_URL"] %>
-    database: task_tracker_production_cable
     migrations_paths: db/cable_migrate

render.yaml

@@ -10,6 +10,7 @@ services:
     runtime: ruby
     plan: free
     buildCommand: "./bin/render-build.sh"
+    preDeployCommand: "bin/rails db:migrate"
     startCommand: "bin/rails server"
     envVars:
       - key: DATABASE_URL