Adds the Catalog Sources block to the config editor (General → App Catalogs),
mirroring the domains block UI: add/remove up to 9 catalog URL slots, saved by
the generic config-form (any CFG_* input) → configUpdateBatch, which rebuilds
registry_catalog.json. Official catalog stays source #1 (not editable here);
third-party rows carry an "unverified" note.
- new catalog-manager.js (lean CatalogManager; reuses the domains block CSS,
URL inputs, no DNS checks) + window.addCatalog/deleteCatalog globals.
- config-manager.js routes the general_catalogs subcategory to it.
- system-loader.js loads catalog-manager.js before config-manager.js.
Signed-off-by: librelad <librelad@digitalangels.vip>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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