docs: cut 6.1.0 versions for docs, admin_docs, developer_docs, components

- Snapshot all four versioned docs sections at v6.1.0; master continues to
  serve as "Next" (lastVersion: current, banner: unreleased) so editing
  master keeps updating the canonical URLs
- Enable the previously-disabled components plugin and version it
- Rename stale "developer_portal" references to "developer_docs" across
  package.json scripts, manage-versions.mjs, theme files (DocVersionBadge,
  DocVersionBanner), DOCS_CLAUDE.md, and README.md (URL backward-compat
  redirect /developer_portal/* preserved)
- Add admin_docs version scripts; drop dead "tutorials" plugin id from
  the version badge
- Generalize fixVersionedImports in manage-versions.mjs to walk every
  section's snapshot and rewrite ../../src/ and ../../data/ imports,
  catching admin_docs and components files that previous version cuts
  would have broken
- Remove orphan files: developer_portal_versions.json,
  tutorials_versions.json, and stray empty versions.json files inside
  components/ and developer_docs/ content directories

docs/developer_docs_versioned_docs/version-6.1.0/api/bulk-delete-dashboards.api.mdx

@@ -0,0 +1,68 @@
+---
+id: bulk-delete-dashboards
+title: "Bulk delete dashboards"
+description: "Bulk delete dashboards"
+sidebar_label: "Bulk delete dashboards"
+hide_title: true
+hide_table_of_contents: true
+api: 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
+sidebar_class_name: "delete api-method"
+info_path: developer-docs/api/superset
+custom_edit_url: null
+hide_send_button: true
+show_extensions: true
+---
+
+import MethodEndpoint from "@theme/ApiExplorer/MethodEndpoint";
+import ParamsDetails from "@theme/ParamsDetails";
+import RequestSchema from "@theme/RequestSchema";
+import StatusCodes from "@theme/StatusCodes";
+import OperationTabs from "@theme/OperationTabs";
+import TabItem from "@theme/TabItem";
+import Heading from "@theme/Heading";
+import Translate from "@docusaurus/Translate";
+
+<Heading
+  as={"h1"}
+  className={"openapi__heading"}
+  children={"Bulk delete dashboards"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"delete"}
+  path={"/api/v1/dashboard/"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Bulk delete dashboards
+
+<Heading
+  id={"request"}
+  as={"h2"}
+  className={"openapi-tabs__heading"}
+>
+  <Translate id="theme.openapi.request.title">Request</Translate>
+</Heading>
+
+<ParamsDetails
+  {...require("./bulk-delete-dashboards.ParamsDetails.json")}
+>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./bulk-delete-dashboards.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./bulk-delete-dashboards.StatusCodes.json")}
+>
+
+</StatusCodes>