Sales-channel workspace

• SalesChannelsWorkspace: separate navigation and native channel cards; independent SaaS workspace creation stays in Team & access.
• ChannelEditor: three-step creation, shared single-language editing, revision-aware changes, activation confirmation and history.
• ChannelProducts: bounded server-side search, selected product chips, no opaque comma-separated IDs.
• ChannelSettings: embeds existing company and checkout editors with an initial channel scope. Unchanged values inherit the shared basis; protected dependencies and stale revisions still run through the existing API.
• channel-model: existing API shape and encoded storefront preview URLs.
• channel-i18n: complete EN/DE/FR/ES interface vocabulary; content languages come from the shop.

Sales channels share a tenant's catalog, customer data and team. They are not an isolation boundary. Unrelated SaaS merchants must use separate workspaces. Deactivation preserves historical orders; the main channel is protected from deletion. Unused additional channels can be deleted through the shared dependency confirmation; used channels must be deactivated. Storefront domains are configured by hosting; this wizard produces channel-specific preview links, not DNS records.

Verification: sales-channel-workspace.test.tsx, settings_scopes, marketing_accounts, catalog_management, tenant_isolation and the source/localization gates.

ChannelActions owns confirmed pause/resume, shared dependency deletion and personal preview handoff. The main channel may be paused or made private; only deletion/type/language inheritance remain protected. ChannelConnections displays and revision-edits the existing frontend alias registry, preserves canonical Experience identity and links to its existing editor. ChannelCatalog owns extracted language/catalog controls. New copy lives in channel-i18n and connection-i18n with four-language translation export.

See channel access and integration limits. channel-management.test.tsx and the registered real HTTP channel_management suite exercise these paths.