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>

docs/designs/saas-api-platform.md

@@ -0,0 +1,71 @@
+# Design: saas-api-platform
+
+**Domain:** `saas`
+**Target Version:** v9.1.0
+
+## Purpose
+
+Provides scaffolding, validation, and development workflow tools for REST and GraphQL API backends. Supports FastAPI (Python) and Express (Node.js) with OpenAPI spec generation, route validation, and middleware management.
+
+## Target Users
+
+- Backend developers building API services
+- Teams using FastAPI or Express frameworks
+- Projects requiring OpenAPI/Swagger documentation
+
+## Commands
+
+| Command | Description |
+|---------|-------------|
+| `/api setup` | Setup wizard — detect framework, configure MCP server |
+| `/api scaffold` | Generate API routes, models, schemas from spec or description |
+| `/api validate` | Validate routes against OpenAPI spec, check missing endpoints |
+| `/api docs` | Generate/update OpenAPI spec from code annotations |
+| `/api test-routes` | Generate request/response test cases for API endpoints |
+| `/api middleware` | Add/configure middleware (auth, CORS, rate-limiting, logging) |
+
+## Agent Architecture
+
+| Agent | Model | Mode | Role |
+|-------|-------|------|------|
+| `api-architect` | sonnet | default | Route design, schema generation, middleware planning |
+| `api-validator` | haiku | plan | Read-only validation of routes against spec |
+
+## Skills
+
+| Skill | Purpose |
+|-------|---------|
+| `framework-detection` | Detect FastAPI vs Express, identify project structure |
+| `openapi-conventions` | OpenAPI 3.x spec generation rules and patterns |
+| `route-patterns` | RESTful route naming, versioning, pagination conventions |
+| `middleware-catalog` | Common middleware patterns per framework |
+| `visual-header` | Standard command output headers |
+
+## MCP Server
+
+**Not required.** All operations are file-based (reading/writing code and specs). No external API needed.
+
+## Integration Points
+
+| Plugin | Integration |
+|--------|-------------|
+| projman | Issue labels: `Component/API`, `Tech/FastAPI`, `Tech/Express` |
+| code-sentinel | PreToolUse hook scans generated routes for security issues |
+| saas-test-pilot | `/api test-routes` generates stubs consumable by test-pilot |
+| saas-db-migrate | Schema models shared between API models and migrations |
+
+## Token Budget
+
+| Component | Estimated Tokens |
+|-----------|-----------------|
+| `claude-md-integration.md` | ~800 |
+| Dispatch file (`api.md`) | ~200 |
+| 6 commands (avg) | ~3,600 |
+| 2 agents | ~1,200 |
+| 5 skills | ~2,500 |
+| **Total** | **~8,300** |
+
+## Open Questions
+
+- Should MCP server be added later for live API testing (curl-like requests)?
+- Support for gRPC/tRPC in addition to REST/GraphQL?