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/delete-a-dashboard.api.mdx

@@ -0,0 +1,68 @@
+---
+id: delete-a-dashboard
+title: "Delete a dashboard"
+description: "Delete a dashboard"
+sidebar_label: "Delete a dashboard"
+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={"Delete a dashboard"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"delete"}
+  path={"/api/v1/dashboard/{pk}"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Delete a dashboard
+
+<Heading
+  id={"request"}
+  as={"h2"}
+  className={"openapi-tabs__heading"}
+>
+  <Translate id="theme.openapi.request.title">Request</Translate>
+</Heading>
+
+<ParamsDetails
+  {...require("./delete-a-dashboard.ParamsDetails.json")}
+>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./delete-a-dashboard.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./delete-a-dashboard.StatusCodes.json")}
+>
+
+</StatusCodes>