Show allowed tool names when loading skills, not just count

Feature Request

When a skill is loaded, the current output shows:

Successfully loaded skill · 4 tools allowed

It would be more useful to show which tools are allowed:

Successfully loaded skill · allowed: Read, Edit, Glob, Grep

Why This Matters

• Users can immediately see what capabilities the skill has
• Helps with debugging when a skill doesn't work as expected
• No need to inspect the skill's frontmatter to understand its permissions
• The tool names are already known at load time, so no additional computation needed

Current Workaround

Manually inspect the skill file's frontmatter:

head -10 .claude/skills/my-skill/SKILL.md

Suggested Implementation

In the skill loading code, instead of just counting allowed-tools, include the list in the output message. For long lists, could truncate with "Read, Edit, +2 more".