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/projman/skills/lessons-learned.md

@@ -13,7 +13,7 @@ Defines the workflow for capturing lessons at sprint close and searching them at
 
 - **Planner agent**: Search lessons at sprint start
 - **Orchestrator agent**: Capture lessons at sprint close
-- **Commands**: `/sprint-plan`, `/sprint-start`, `/sprint-close`
+- **Commands**: `/sprint plan`, `/sprint start`, `/sprint close`
 
 ---