feat(marketplace): command consolidation + 8 new plugins (v8.1.0 → v9.0.0) [BREAKING]

Phase 1b: Rename all ~94 commands across 12 plugins to /<noun> <action>
sub-command pattern. Git-flow consolidated from 8→5 commands (commit
variants absorbed into --push/--merge/--sync flags). Dispatch files,
name: frontmatter, and cross-reference updates for all plugins.

Phase 2: Design documents for 8 new plugins in docs/designs/.

Phase 3: Scaffold 8 new plugins — saas-api-platform, saas-db-migrate,
saas-react-platform, saas-test-pilot, data-seed, ops-release-manager,
ops-deploy-pipeline, debug-mcp. Each with plugin.json, commands, agents,
skills, README, and claude-md-integration. Marketplace grows from 12→20.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/saas-api-platform/README.md

@@ -0,0 +1,43 @@
+# saas-api-platform
+
+REST and GraphQL API scaffolding, validation, and documentation for FastAPI and Express.
+
+## Overview
+
+The saas-api-platform plugin provides a complete API development toolkit. It detects your framework, generates routes and models following RESTful conventions, validates implemented endpoints against OpenAPI specifications, and manages middleware configuration.
+
+## Supported Frameworks
+
+- **FastAPI** (Python) - Pydantic models, dependency injection, async endpoints
+- **Express** (Node.js/TypeScript) - Router patterns, Zod/Joi validation, middleware chains
+
+## Commands
+
+| Command | Description |
+|---------|-------------|
+| `/api setup` | Setup wizard - detect framework, map project structure |
+| `/api scaffold <resource>` | Generate CRUD routes, models, and schemas |
+| `/api validate` | Validate routes against OpenAPI specification |
+| `/api docs` | Generate or update OpenAPI 3.x specification from code |
+| `/api test-routes` | Generate test cases for API endpoints |
+| `/api middleware <type>` | Add and configure middleware (auth, CORS, rate-limit, etc.) |
+
+## Agents
+
+| Agent | Model | Mode | Purpose |
+|-------|-------|------|---------|
+| `api-architect` | sonnet | default | Route design, schema generation, middleware planning |
+| `api-validator` | haiku | plan (read-only) | OpenAPI compliance validation |
+
+## Installation
+
+This plugin is part of the Leo Claude Marketplace. It is installed automatically when the marketplace is configured.
+
+### Prerequisites
+
+- A FastAPI or Express project to work with
+- Run `/api setup` before using other commands
+
+## Configuration
+
+The `/api setup` command creates `.api-platform.json` in your project root with detected settings. All subsequent commands read this file for framework and convention configuration.