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/create-a-new-dashboard.api.mdx

@@ -0,0 +1,68 @@
+---
+id: create-a-new-dashboard
+title: "Create a new dashboard"
+description: "Create a new dashboard"
+sidebar_label: "Create a new dashboard"
+hide_title: true
+hide_table_of_contents: true
+api: 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
+sidebar_class_name: "post 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={"Create a new dashboard"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"post"}
+  path={"/api/v1/dashboard/"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Create a new dashboard
+
+<Heading
+  id={"request"}
+  as={"h2"}
+  className={"openapi-tabs__heading"}
+>
+  <Translate id="theme.openapi.request.title">Request</Translate>
+</Heading>
+
+<ParamsDetails
+  parameters={undefined}
+>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./create-a-new-dashboard.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./create-a-new-dashboard.StatusCodes.json")}
+>
+
+</StatusCodes>