TUI Plugin Sharing 5 - polish remote plugin catalog rows

[canvrno-oai]

This is the final plugin sharing PR in the 5-PR stack. It applies the remaining TUI polish for remote plugin catalog rows and tabs: admin-disabled plugins now read as blocked/view-only instead of looking toggleable, admin-installed/default-installed plugins count and sort like installed plugins, plugin search matches richer metadata, and an empty successful Shared with me section stays hidden.

• Admin-disabled rows use a blocked marker, show Disabled, and keep Enter-only detail behavior without a toggle hint.
• Admin-installed/default-installed plugins show as installed in counts, ordering, tabs, and detail copy.
• Plugin search now matches descriptions and keywords in addition to existing row metadata.
• Successful-empty Shared with me tabs are hidden, while loading, error, workspace-empty, and real shared-plugin states remain visible.
• Updates coverage in plugins_popup_snapshot_shows_all_marketplaces_and_sorts_installed_then_name, plugins_popup_admin_disabled_installed_plugin_has_no_toggle_hint, plugins_popup_search_matches_plugin_descriptions, and plugins_popup_remote_section_fallback_states_snapshot.
• Updates snapshots plugins_popup_curated_marketplace and plugins_popup_empty_shared_section_hidden.

[canvrno-oai]

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[chatgpt-codex-connector]

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