fix: remove redundant plugin prefix from reviewer agent name

The agent name was `deepwork:reviewer`, but since the platform
auto-prefixes the plugin name, this resulted in `deepwork:deepwork:reviewer`.
Renamed to just `reviewer` so it resolves correctly as `deepwork:reviewer`.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: nhorton

plugins/claude/agents/reviewer.md

@@ -1,5 +1,5 @@
 ---
-name: deepwork:reviewer
+name: reviewer
 description: Minimal review subagent for DeepWork review tasks. Reads a supplied instruction file, performs the review against the criteria in that file, and reports results via the DeepWork MCP mark_review_as_passed tool. Use when dispatching parallel review tasks from .deepreview rules or workflow quality gates.
 model: sonnet
 color: cyan