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/schemas/dashboardgetresponseschema.Schema.json

@@ -0,0 +1 @@
+{"schema":{"properties":{"certification_details":{"description":"Details of the certification","type":"string"},"certified_by":{"description":"Person or group that has certified this dashboard","type":"string"},"changed_by":{"properties":{"first_name":{"type":"string"},"id":{"type":"integer"},"last_name":{"type":"string"}},"type":"object","title":"User"},"changed_by_name":{"type":"string"},"changed_on":{"format":"date-time","type":"string"},"changed_on_delta_humanized":{"type":"string"},"charts":{"items":{"description":"The names of the dashboard's charts. Names are used for legacy reasons.","type":"string"},"type":"array"},"created_by":{"properties":{"first_name":{"type":"string"},"id":{"type":"integer"},"last_name":{"type":"string"}},"type":"object","title":"User"},"created_on_delta_humanized":{"type":"string"},"css":{"description":"Override CSS for the dashboard.","type":"string"},"dashboard_title":{"description":"A title for the dashboard.","type":"string"},"id":{"type":"integer"},"is_managed_externally":{"nullable":true,"type":"boolean"},"json_metadata":{"description":"This JSON object is generated dynamically when clicking the save or overwrite button in the dashboard view. It is exposed here for reference and for power users who may want to alter  specific parameters.","type":"string"},"owners":{"items":{"properties":{"first_name":{"type":"string"},"id":{"type":"integer"},"last_name":{"type":"string"}},"type":"object","title":"User"},"type":"array"},"position_json":{"description":"This json object describes the positioning of the widgets in the dashboard. It is dynamically generated when adjusting the widgets size and positions by using drag & drop in the dashboard view","type":"string"},"published":{"type":"boolean"},"roles":{"items":{"properties":{"id":{"type":"integer"},"name":{"type":"string"}},"type":"object","title":"Roles"},"type":"array"},"slug":{"type":"string"},"tags":{"items":{"properties":{"id":{"type":"integer"},"name":{"type":"string"},"type":{"enum":[1,2,3,4]}},"type":"object","title":"Tag"},"type":"array"},"thumbnail_url":{"nullable":true,"type":"string"},"url":{"type":"string"}},"type":"object","title":"DashboardGetResponseSchema"},"schemaType":"response"}