feat: add pg_cron, pg_net, pgsodium, and supabase_vault extensions to Atlas database (#508)

# Add PostgreSQL extensions for pgflow worker management

This PR adds several PostgreSQL extensions to the Atlas development database to support pgflow worker management:

- Added `pg_cron` for scheduled job execution
- Added `pg_net` for making HTTP requests from SQL (needed for pinging edge functions)
- Added `pgsodium` and `supabase_vault` for secure credential storage

The changes include:
- Updated Dockerfile to install and configure these extensions
- Modified the schema dump script to include schemas from the new extensions
- Updated the baseline schema to include the new extensions
- Renamed the Docker image to `jumski/atlas-postgres-pgflow:latest` to better reflect its purpose
- Added proper configuration for shared preload libraries and other required settings

These extensions will enable pgflow to securely store credentials, make HTTP requests, and schedule recurring tasks for worker management.

Author: jumski

pkgs/core/schemas/0010_extensions.sql

@@ -1,2 +1,12 @@
 -- Extensions must be created first
 create extension if not exists pgmq;
+
+-- Extensions for worker management
+-- pg_net: HTTP requests from SQL (for pinging edge functions)
+create extension if not exists pg_net;
+
+-- supabase_vault: Secure credential storage (service role key, base URL)
+create extension if not exists supabase_vault;
+
+-- pg_cron: Scheduled job execution (ensure_workers cron)
+create extension if not exists pg_cron;

pkgs/core/supabase/migrations/20251205103442_pgflow_temp_add_extensions.sql

@@ -0,0 +1,4 @@
+-- Create extension "pg_net"
+CREATE EXTENSION IF NOT EXISTS "pg_net" WITH SCHEMA "public";
+-- Create extension "pg_cron"
+CREATE EXTENSION IF NOT EXISTS "pg_cron";

pkgs/core/supabase/migrations/atlas.sum

@@ -1,4 +1,4 @@
-h1:T5v0ssUXOiDF+iJT/GP9XN0ceXsT+9PnvHvkkRT3NT4=
+h1:ITAzSq+m8k27LdS5wU7dFgdolSQl5pHgOD5VgpL3zyU=
 20250429164909_pgflow_initial.sql h1:I3n/tQIg5Q5nLg7RDoU3BzqHvFVjmumQxVNbXTPG15s=
 20250517072017_pgflow_fix_poll_for_tasks_to_use_separate_statement_for_polling.sql h1:wTuXuwMxVniCr3ONCpodpVWJcHktoQZIbqMZ3sUHKMY=
 20250609105135_pgflow_add_start_tasks_and_started_status.sql h1:ggGanW4Wyt8Kv6TWjnZ00/qVb3sm+/eFVDjGfT8qyPg=
@@ -17,3 +17,4 @@ h1:T5v0ssUXOiDF+iJT/GP9XN0ceXsT+9PnvHvkkRT3NT4=
 20251204145037_pgflow_temp_worker_functions_schema.sql h1:mrLKtkM8aWHBY+LIxQrsXxE7aKuPJaQJO2qd0NnrJ74=
 20251204164612_pgflow_temp_track_worker_function.sql h1:3Ht8wUx3saKPo98osuTG/nxD/tKR48qe8jHNVwuu2lY=
 20251204165231_pgflow_temp_mark_worker_stopped.sql h1:zI2FijK429oae4OpLbjU4eSaZtYhlsbvN3buWH9FKLw=
+20251205103442_pgflow_temp_add_extensions.sql h1:IBHG1vBdXu8wDEJzqpJUFmuPhVaX0mAmDUkngLgdaMg=