DOC-13858 Server File-Based Rebalance for Data Service

[rao-shwe]

DOC-13858

[Copilot]

Pull request overview

Adds documentation for the new Data Service File-Based Rebalance (FBR) feature in Couchbase Server 8.1, including a new REST API reference page, navigation entry, conceptual coverage in the rebalance learn page, a new bucket-level dataServiceRebalanceType parameter, and updates to general settings, node management, and the 8.1 new-features page. Also performs cosmetic cleanup (removing italic emphasis) in the rebalance learn page and updates the shared user/pwd/host/port REST parameter partial.

Changes:

• New REST reference page file-based-data-rebalance.adoc documenting GET/POST /internalSettings usage for FBR, plus nav and rebalance-table entries.
• New dataServiceRebalanceType bucket parameter documentation added to rest-bucket-create.adoc, with cross-references from general settings, add-node-and-rebalance, and the rebalance learn page.
• Conceptual FBR section added to rebalance.adoc and a 8.1 new-features entry, plus formatting cleanup of italic markers across rebalance.adoc and rest-rebalance-overview.adoc.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 12 comments.

Show a summary per file

File	Description
modules/ROOT/nav.adoc	Adds new FBR REST page to the navigation.
modules/rest-api/partials/user_pwd_host_port_params.adoc	Renames placeholders to uppercase (HOST, PORT, USER, PASSWORD).
modules/rest-api/partials/rest-rebalance-table.adoc	Adds GET/POST /internalSettings rows for FBR.
modules/rest-api/pages/rest-rebalance-overview.adoc	Removes italic emphasis from prose.
modules/rest-api/pages/rest-bucket-create.adoc	Documents new dataServiceRebalanceType bucket parameter with examples.
modules/rest-api/pages/file-based-data-rebalance.adoc	New REST reference page for configuring FBR via /internalSettings.
modules/manage/pages/manage-settings/general-settings.adoc	Adds description of the new FBR concurrent-moves UI setting.
modules/manage/pages/manage-nodes/add-node-and-rebalance.adoc	Adds note that FBR is used automatically during node addition (EE).
modules/learn/pages/clusters-and-availability/rebalance.adoc	Adds conceptual FBR section and removes italic emphasis throughout.
modules/introduction/partials/new-features-81.adoc	Adds the FBR entry under Data Service new features.

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