docs: Add tagline to g-slave (trigger sync test)

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

commands/g-slave.md

@@ -4,6 +4,8 @@ description: Dispatch Gemini CLI to analyze large codebases. Gemini does the gru
 
 # G-SLAVE: Gemini Large-context Analysis & Verification Engine
 
+> Dispatch Gemini CLI to analyze large codebases. Gemini does the grunt work with its 1M token context, Claude gets distilled intel.
+
 You are dispatching Gemini CLI as a subordinate tool to analyze code that would bloat your context window. Gemini does the heavy lifting; you receive distilled intelligence.
 
 ## Target