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/code-sentinel/claude-md-integration.md

@@ -16,11 +16,11 @@ PreToolUse hooks scan all code changes for:
 Critical issues are blocked. Warnings are noted but allowed.
 
 ### Commands
-- `/security-scan` - Full project security audit
-- `/refactor <target>` - Apply refactoring pattern
-- `/refactor-dry <target>` - Preview refactoring opportunities
+- `/sentinel scan` - Full project security audit
+- `/sentinel refactor <target>` - Apply refactoring pattern
+- `/sentinel refactor-dry <target>` - Preview refactoring opportunities
 
 ### Severity Levels
-- 🔴 Critical: Must fix immediately
-- 🟠 High: Fix before release
-- 🟡 Medium: Improve when possible
+- Critical: Must fix immediately
+- High: Fix before release
+- Medium: Improve when possible