Speed up procedure list initial load

The procedure list now appears immediately when opening the dashboard, instead of after a blank loading spinner.

• Improved initial load by rendering procedure cards, yield circles, and run sparklines directly in the first page response, removing a full client roundtrip
• Added skeleton placeholders and kept previous results visible while searching, so the page never flashes empty
• Added a "/" keyboard shortcut to focus the search bar on list pages, and create buttons no longer pop in after loading