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/data-platform/commands/data-ingest.md

@@ -1,4 +1,8 @@
-# /data-ingest - Data Ingestion
+---
+name: data ingest
+---
+
+# /data ingest - Data Ingestion
 
 ## Skills to Load
 - skills/mcp-tools-reference.md
@@ -11,7 +15,7 @@ Display header: `DATA-PLATFORM - Ingest`
 ## Usage
 
 ```
-/data-ingest [source]
+/data ingest [source]
 ```
 
 ## Workflow
@@ -31,9 +35,9 @@ Display header: `DATA-PLATFORM - Ingest`
 ## Examples
 
 ```
-/data-ingest data/sales.csv
-/data-ingest data/customers.parquet
-/data-ingest "SELECT * FROM orders WHERE created_at > '2024-01-01'"
+/data ingest data/sales.csv
+/data ingest data/customers.parquet
+/data ingest "SELECT * FROM orders WHERE created_at > '2024-01-01'"
 ```
 
 ## Required MCP Tools