Add database management recipes for PostgreSQL and MySQL

README.md

@@ -8,6 +8,7 @@ This repository contains reusable Just recipes for:
 - **Container operations**: start, stop, restart, logs, shell, exec, status
 - **Registry authentication**: login, logout, status checks for GitHub Container Registry
 - **Image operations**: build, push, pull, tag, test, info, clean
+- **Database operations**: PostgreSQL and MySQL database management
 
 ## Usage
 
@@ -21,29 +22,56 @@ Import in your `justfile`:
 
 ```bash
 # Import universal commands
-import 'just-commons/container.just'
-import 'just-commons/registry.just'
-import 'just-commons/images.just'
+import 'just-commons/core.just'        # Core utilities
+import 'just-commons/container.just'   # Container operations
+import 'just-commons/registry.just'    # Registry authentication
+import 'just-commons/images.just'      # Image operations
 
-# Your project-specific commands
-import 'just/postgres.just'
-import 'just/servapp.just'
+# Import database commands (optional)
+import 'just-commons/postgres.just'    # PostgreSQL operations
+import 'just-commons/mysql.just'       # MySQL operations
 ```
 
 ## Files
 
+### Core Files
+- `core.just` - Core utilities (_detect_runtime, _detect_compose, env-check)
 - `container.just` - Universal container operations (start, stop, logs, shell, exec, status)
-- `registry.just` - GitHub Container Registry authentication
-- `images.just` - Universal image build/push/pull operations
+- `registry.just` - GitHub Container Registry authentication (registry-login, registry-logout, registry-check)
+- `images.just` - Universal image operations (image-build, image-push, image-pull, image-tag, etc.)
+
+### Database Files (Optional)
+- `postgres.just` - PostgreSQL operations (postgres-sql, postgres-check, postgres-list-databases, etc.)
+- `mysql.just` - MySQL operations (mysql-sql, mysql-check, mysql-list-databases, etc.)
+
+### Command Structure
+- **Container commands**: No prefix (start, stop, logs, shell, exec, status, restart)
+- **All other commands**: Prefixed by file type (image-*, registry-*, postgres-*, mysql-*)
+
+### Usage Examples
+
+```bash
+# Container operations (no prefix)
+just start postgres
+just logs postgres
+just shell postgres
+
+# Image operations (image- prefix)
+just image-build postgres
+just image-push postgres v1.0.0
+
+# Registry operations (registry- prefix)
+just registry-login
+just registry-check
+
+# Database operations (database- prefix)
+just postgres-sql "SELECT version();"
+just postgres-check
+just mysql-sql "SELECT VERSION();"
+```
 
 ## Requirements
 
 - Just command runner
 - Docker or Podman
 - Git
-
-## Projects Using This
-
-- [servass](https://github.com/shadoll/servass) - Universal container image management
-- [servass_sh](https://github.com/shadoll/servass_sh) - Production deployment (SH)
-- [servass_ri](https://github.com/shadoll/servass_ri) - Production deployment (RI)