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skills/sql-schema-generator/SKILL.md

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+# sql-schema-generator
+
+Generate SQL schemas with migrations.
+
+## Activation Keywords
+- "SQL", "schema", "database design", "CREATE TABLE", "migration"
+
+## When to Use
+- Designing database schemas
+- Creating migrations for new features
+- Defining table structures and relationships
+
+## What This Does
+Generates SQL DDL statements including:
+- **CREATE TABLE** statements with data types
+- **Indexes** for performance
+- **Foreign keys** for relationships
+- **Constraints** (NOT NULL, UNIQUE, CHECK)
+- **Default values** where applicable
+- **Comments** explaining purpose
+
+Also generates:
+- **Migration files** (with up/down versions)
+- **Rollback procedures**
+- **Data migration scripts** if needed
+
+Coordinates with agileflow-database agent.
+
+## Output
+SQL migration files in migrations/ directory
+
+## Example Activation
+User: "Create users and sessions tables"
+Skill: Generates:
+```sql
+-- Migration: 2025-10-28_create_users_table
+
+-- UP: Create tables
+CREATE TABLE users (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  email VARCHAR(255) NOT NULL UNIQUE,
+  password_hash VARCHAR(255) NOT NULL,
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  is_active BOOLEAN DEFAULT true,
+  INDEX idx_email (email),
+  INDEX idx_created_at (created_at)
+);
+
+CREATE TABLE sessions (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  user_id UUID NOT NULL,
+  token VARCHAR(500) NOT NULL UNIQUE,
+  expires_at TIMESTAMP NOT NULL,
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+  INDEX idx_user_id (user_id),
+  INDEX idx_expires_at (expires_at)
+);
+
+-- DOWN: Drop tables (for rollback)
+DROP TABLE IF EXISTS sessions;
+DROP TABLE IF EXISTS users;
+```