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/chartdatarestapi-post.Schema.json

@@ -0,0 +1 @@
+{"schema":{"properties":{"cache_timeout":{"description":"Duration (in seconds) of the caching timeout for this chart. Note this defaults to the datasource/table timeout if undefined.","nullable":true,"type":"integer"},"certification_details":{"description":"Details of the certification","nullable":true,"type":"string"},"certified_by":{"description":"Person or group that has certified this chart","nullable":true,"type":"string"},"dashboards":{"items":{"description":"A list of dashboards to include this new chart to.","type":"integer"},"type":"array"},"datasource_id":{"description":"The id of the dataset/datasource this new chart will use. A complete datasource identification needs `datasource_id` and `datasource_type`.","type":"integer"},"datasource_name":{"description":"The datasource name.","nullable":true,"type":"string"},"datasource_type":{"description":"The type of dataset/datasource identified on `datasource_id`.","enum":["table","dataset","query","saved_query","view"],"type":"string"},"description":{"description":"A description of the chart propose.","nullable":true,"type":"string"},"external_url":{"nullable":true,"type":"string"},"is_managed_externally":{"nullable":true,"type":"boolean"},"owners":{"items":{"description":"Owner are users ids allowed to delete or change this chart. If left empty you will be one of the owners of the chart.","type":"integer"},"type":"array"},"params":{"description":"Parameters are generated dynamically when clicking the save or overwrite button in the explore view. This JSON object for power users who may want to alter specific parameters.","nullable":true,"type":"string"},"query_context":{"description":"The query context represents the queries that need to run in order to generate the data the visualization, and in what format the data should be returned.","nullable":true,"type":"string"},"query_context_generation":{"description":"The query context generation represents whether the query_contextis user generated or not so that it does not update user modifiedstate.","nullable":true,"type":"boolean"},"slice_name":{"description":"The name of the chart.","maxLength":250,"minLength":1,"type":"string"},"viz_type":{"description":"The type of chart visualization used.","example":["bar","area","table"],"maxLength":250,"minLength":0,"type":"string"}},"required":["datasource_id","datasource_type","slice_name"],"type":"object","title":"ChartDataRestApi.post"},"schemaType":"response"}