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/debug-mcp/claude-md-integration.md

@@ -0,0 +1,34 @@
+# Debug MCP Integration
+
+Add to your project's CLAUDE.md:
+
+## MCP Server Debugging (debug-mcp)
+
+This project uses the **debug-mcp** plugin for diagnosing and developing MCP server integrations.
+
+### Available Commands
+
+| Command | Description |
+|---------|-------------|
+| `/debug-mcp status` | Show health status of all configured MCP servers |
+| `/debug-mcp test` | Test a specific MCP tool call with parameters |
+| `/debug-mcp logs` | View and analyze recent MCP server error logs |
+| `/debug-mcp inspect` | Deep inspection of server config, dependencies, and tools |
+| `/debug-mcp scaffold` | Generate a new MCP server project skeleton |
+
+### Usage Guidelines
+
+- Run `/debug-mcp status` when Claude Code reports MCP server failures at session start
+- Use `/debug-mcp inspect <server> --deps` to diagnose missing package issues
+- Use `/debug-mcp test <server> <tool>` to verify individual tool functionality
+- Use `/debug-mcp logs --errors-only` to quickly find error patterns
+- Use `/debug-mcp scaffold` when creating a new MCP server integration
+
+### Common Troubleshooting
+
+| Symptom | Command |
+|---------|---------|
+| "X MCP servers failed" at startup | `/debug-mcp status` |
+| Tool call returns error | `/debug-mcp test <server> <tool>` |
+| ImportError in server | `/debug-mcp inspect <server> --deps` |
+| Unknown server errors | `/debug-mcp logs --server=<name>` |