fix: remove invalid hooks field from plugin.json

[ctrl-post]

Problem

The plugin fails to install with the following error:

✘ Failed to install plugin "pua@pua-skills": Plugin has an invalid manifest
file. Validation errors: hooks: Invalid input

Root Cause

The plugin.json contains an invalid "hooks": "hooks/hooks.json" field.
According to Claude plugin specification, hooks should be placed in
hooks/hooks.json at the repository root, and should NOT be declared in
plugin.json.

Looking at official plugins like security-guidance, the plugin.json does not
include a hooks field - Claude automatically discovers hooks/hooks.json.

Solution

Remove the "hooks": "hooks/hooks.json" field from
.claude-plugin/plugin.json. The hooks configuration file at hooks/hooks.json
remains unchanged and will be auto-discovered.

Testing

After the fix:

claude plugin install pua@pua-skills
# ✔ Successfully installed plugin: pua@pua-skills (scope: user)

Files Changed

- .claude-plugin/plugin.json - Removed invalid hooks field

[tanweai]

Approved. Merge conflict — please rebase on latest main and we'll merge.