CBG-5377 remove serverless options

[torcolvin]

CBG-5377 remove serverless options

• Remove unsupported.serverless and unsupported.serverless.min_config_fetch_interval options
• Turn database option suspendable into a no-op option.
• forcePerBucketAuth was only used by the serverless pathway, per bucket auth is still supported

Pre-review checklist

• Removed debug logging (fmt.Print, log.Print, ...)
• Logging sensitive data? Make sure it's tagged (e.g. base.UD(docID), base.MD(dbName))
• Updated relevant information in the API specifications (such as endpoint descriptions, schemas, ...) in docs/api

Integration Tests

• https://jenkins.sgwdev.com/job/SyncGatewayIntegration/882/

[github-actions]

Redocly previews

• Admin API
• Public API
• Metric API
• Diagnostic API

[Copilot]

Pull request overview

Removes the legacy “serverless mode” configuration and code paths from Sync Gateway, while keeping per-bucket authentication support. This simplifies config surface area and eliminates serverless-only behaviors (including serverless-specific connection string defaults and database suspension handling).

Changes:

• Removed unsupported.serverless.* configuration (structs, flag wiring, validation, and API schema) and serverless-specific connection string defaults.
• Removed database suspension logic; suspendable remains as a deprecated/no-op config field for compatibility.
• Cleaned up/renamed tests and removed serverless-specific test coverage.

Reviewed changes

Copilot reviewed 26 out of 26 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
rest/utilities_testing.go	Removes RestTester serverless setup plumbing and test-only suspend helpers.
rest/serverless_test.go	Deletes serverless-mode test suite.
rest/server_context.go	Removes serverless-specific inactive DB loading and bucket-spec defaults; removes suspend/unsuspend implementation.
rest/replicatortest/replicator_test.go	Renames tests to remove “serverless” terminology.
rest/main.go	Removes serverless bootstrap-connection behavior and related option plumbing.
rest/handler_config_database.go	Updates DbConfig setup call signature (removes serverless/per-bucket forcing param).
rest/database_init_manager_test.go	Updates DbConfig setup call signature in tests.
rest/config.go	Makes suspendable explicitly a no-op; removes serverless validation and serverless fetch-caching helpers.
rest/config_test.go	Updates DbConfig setup call signature; removes serverless bucket-credential validation tests.
rest/config_startup.go	Removes Unsupported.Serverless config and StartupConfig.IsServerless().
rest/config_legacy.go	Updates DbConfig setup call signature for legacy config validation path.
rest/config_flags.go	Removes serverless-related unsupported config flags.
rest/config_database.go	Removes runtime “suspended” state and serverless-derived defaults for suspendable/import partitions.
rest/config_database_test.go	Marks Suspendable as deprecated for default-field coverage expectations.
rest/api_test.go	Updates connection-string defaulting tests to no longer expect serverless defaults.
rest/adminapitest/admin_api_test.go	Renames test to remove “serverless” terminology.
rest/admin_api.go	Updates DbConfig setup call signature for admin API paths.
docs/api/components/schemas.yaml	Removes Serverless schema and marks suspendable as deprecated/no-op in API schema.
base/rosmar_cluster.go	Removes serverless-only rosmar cluster stub method.
base/gocb_dcp_client.go	Removes serverless DCP buffer default constant.
base/gocb_connection_string.go	Removes serverless default param set; keeps only general defaults.
base/gocb_connection_string_test.go	Removes serverless-params test cases.
base/dcp_sharded.go	Removes serverless import-partition defaults and helper.
base/constants.go	Removes serverless KV pool/buffer constants.
base/bootstrap.go	Removes “force per-bucket auth” behavior; keeps per-bucket authenticators.
base/bootstrap_test.go	Updates NewCouchbaseCluster call signature in tests.