Fix World Clocks store entry

[larkum]

World Clocks was merged into Plugins.json, but its entry only contained a commits map. The current Store loader resolves plugins using hash or branch, so the entry was skipped and the plugin did not appear.

This change:

• adds the required hash pinned to the current World Clocks 0.1.0 release
• corrects the commits version key from the StreamController app version to the plugin version
• points the Store at the completed metadata and new artwork

The plugin manifest, action metadata, thumbnail, and release notes were checked against the official Clocks plugin structure. All 13 plugin tests pass.

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