fix: standardize command frontmatter across plugin commands

Align both plugin commands with documented best practices from
the command-development skill and official Claude Code docs:

- create-plugin.md: Remove unnecessary quotes from argument-hint
- create-plugin.md: Use comma-separated allowed-tools format
- create-marketplace.md: Shorten description to under 60 chars
- create-marketplace.md: Use bracket notation for argument-hint
- create-marketplace.md: Add Edit tool for consistency
- create-marketplace.md: Use comma-separated allowed-tools format

Fixes #105

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: sjnims

plugins/plugin-dev/commands/create-marketplace.md

@@ -1,7 +1,7 @@
 ---
-description: Guided end-to-end marketplace creation workflow with plugin organization and validation
-argument-hint: Optional marketplace description
-allowed-tools: ["Read", "Write", "Grep", "Glob", "Bash", "TodoWrite", "AskUserQuestion", "Skill", "Task"]
+description: Create plugin marketplaces with guided workflow
+argument-hint: [marketplace-description]
+allowed-tools: Read, Write, Edit, Grep, Glob, Bash, TodoWrite, AskUserQuestion, Skill, Task
 ---
 
 # Marketplace Creation Workflow

plugins/plugin-dev/commands/create-plugin.md

@@ -1,7 +1,7 @@
 ---
 description: Create plugins with guided 8-phase workflow
-argument-hint: "[plugin-description]"
-allowed-tools: ["Read", "Write", "Edit", "Grep", "Glob", "Bash(mkdir:*)", "TodoWrite", "AskUserQuestion", "Skill", "Task"]
+argument-hint: [plugin-description]
+allowed-tools: Read, Write, Edit, Grep, Glob, Bash(mkdir:*), TodoWrite, AskUserQuestion, Skill, Task
 ---
 
 # Plugin Creation Workflow