plugin.json: "skills": ["./"] rejected by Claude Code loader (Path escapes plugin directory)

[aidansommers]

Problem

Installing visual-explainer (v0.7.1) into Claude Code produces a plugin-load error:

Plugin (visual-explainer @ visual-explainer@visual-explainer-marketplace):
  Path escapes plugin directory: ./ (skills)

The slash commands under commands/ still load fine, but the root SKILL.md (which carries the proactive trigger description) is dropped.

Cause

.claude-plugin/plugin.json declares:

"skills": ["./"]

Claude Code's plugin loader resolves this to the plugin root and rejects it as escaping the plugin directory — skills entries appear to need to point at a subdirectory, not the plugin root.

Reproduction

1. /plugin marketplace add nicobailon/visual-explainer
2. /plugin → install visual-explainer
3. /reload-plugins → reports 1 error during load
4. /doctor → shows the message above

Tested on Claude Code with plugin v0.7.1.

Suggested fix

Move SKILL.md into a subdirectory (e.g. skills/visual-explainer/SKILL.md) and update the manifest to "skills": ["skills"] (or list the subdirectory directly). That keeps the proactive SKILL.md loading without tripping the path-escape check.

Workaround

Removing the "skills": ["./"] line from plugin.json clears the error. The commands/* slash commands continue to work; only the root SKILL.md proactive trigger is no longer registered.

Happy to send a PR if a particular layout is preferred.