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

Snapshots all four versioned Docusaurus sections at v6.1.0. Built on
top of the version-cutting tooling work in chore/docs-cut-6.1.0-versions
so the snapshot benefits from:

- Auto-gen refresh before snapshotting (database pages from engine
  spec metadata, API reference from openapi.json, component pages
  from Storybook stories) — captured at the SHA we cut from rather
  than whatever happened to be on disk.
- Data-import freeze: country list, feature flag table, database
  diagnostics, and component metadata are copied into snapshot-local
  `_versioned_data/` dirs so the historical version doesn't silently
  mutate when the source files change.
- Depth-aware import-path rewriter that handles deeply-nested
  component MDX files referencing `../../../src/` from the snapshot.

Versioning behavior: `lastVersion` stays at `current` for every
section, so the canonical URLs (`/docs/...`, `/admin-docs/...`,
`/developer-docs/...`, `/components/...`) continue to render content
from master. The `current` version is consistently labeled "Next"
with an `unreleased` banner, and `6.1.0` is a historical pin
accessible only via its explicit version segment.

Component playground: previously `disabled: true` in versions-config.json,
now enabled and versioned. The plugin block in docusaurus.config.ts
was already gated only by the `disabled` flag, so no other code
changes were needed to bring it back online.

The frozen `databases.json` in the snapshot is the canonical 80-database
artifact from the latest committed state in master (preserved by the
generator's input-hash cache), not a fallback regenerated from a
local Flask environment.

docs/developer_docs_versioned_docs/version-6.1.0/components/TODO.md

@@ -0,0 +1,71 @@
+---
+title: Components TODO
+sidebar_class_name: hidden
+---
+
+# Components TODO
+
+These components were found but not yet supported for documentation generation.
+Future phases will add support for these sources.
+
+## Summary
+
+- **Total skipped:** 19 story files
+- **Reason:** Import path resolution not yet implemented
+
+## Skipped by Source
+
+### App Components
+
+9 components
+
+- [ ] `superset-frontend/src/components/AlteredSliceTag/AlteredSliceTag.stories.tsx`
+- [ ] `superset-frontend/src/components/Chart/DrillDetail/DrillDetailTableControls.stories.tsx`
+- [ ] `superset-frontend/src/components/CopyToClipboard/CopyToClipboard.stories.tsx`
+- [ ] `superset-frontend/src/components/ErrorMessage/ErrorAlert.stories.tsx`
+- [ ] `superset-frontend/src/components/FacePile/FacePile.stories.tsx`
+- [ ] `superset-frontend/src/components/FilterableTable/FilterableTable.stories.tsx`
+- [ ] `superset-frontend/src/components/RowCountLabel/RowCountLabel.stories.tsx`
+- [ ] `superset-frontend/src/components/Tag/Tag.stories.tsx`
+- [ ] `superset-frontend/src/components/TagsList/TagsList.stories.tsx`
+
+### Dashboard Components
+
+2 components
+
+- [ ] `superset-frontend/src/dashboard/components/AnchorLink/AnchorLink.stories.tsx`
+- [ ] `superset-frontend/src/dashboard/components/nativeFilters/FilterBar/FilterControls/FilterDivider.stories.tsx`
+
+### Explore Components
+
+4 components
+
+- [ ] `superset-frontend/src/explore/components/ControlHeader.stories.tsx`
+- [ ] `superset-frontend/src/explore/components/RunQueryButton/RunQueryButton.stories.tsx`
+- [ ] `superset-frontend/src/explore/components/controls/BoundsControl.stories.tsx`
+- [ ] `superset-frontend/src/explore/components/controls/SliderControl.stories.tsx`
+
+### Feature Components
+
+2 components
+
+- [ ] `superset-frontend/src/features/datasets/AddDataset/DatasetPanel/DatasetPanel.stories.tsx`
+- [ ] `superset-frontend/src/features/home/LanguagePicker.stories.tsx`
+
+### Filter Components
+
+2 components
+
+- [ ] `superset-frontend/src/filters/components/Range/RangeFilterPlugin.stories.tsx`
+- [ ] `superset-frontend/src/filters/components/Select/SelectFilterPlugin.stories.tsx`
+
+## How to Add Support
+
+1. Determine the correct import path for the source
+2. Update `generate-superset-components.mjs` to handle the source
+3. Add source to `SUPPORTED_SOURCES` array
+4. Re-run the generator
+
+---
+
+*Auto-generated by generate-superset-components.mjs*