Finalize Context Importer naming and review Extensions page UI/UX
## Description
Follow-up to:
#3586275+s
Required for:
#3586282+s
### Summary
[#3586275](https://www.drupal.org/project/ai_context/issues/3586275) introduced the `ai_context_document_loader` submodule and a reworked **Settings → Extensions** page (`/admin/config/ai/context/settings/extensions`). Initial UX feedback has been considered, but needs refinement. For now, the submodule has been renamed from “Document Loader: Markdown Importer” to **“Document Loader: Context Importer”**.
Before the submodule stabilization follow-up (experimental → stable) (#3586282), we need a focused pass to **lock in naming** and **validate the Extensions page design** with maintainers and users.
This issue should be resolved **before** the stabilization issue.
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### Background
Current Extensions page structure:
- **General** table — optional extensions (Diff, Dynamic Entity Reference)
- **Importers** section — intro paragraph + table for import-related modules
- Four columns: **Feature**, **Description**, **Module**, **Status**
- Submodule row uses:
- Feature: `Markdown file importer`
- Module: `Document Loader: Context Importer (submodule)` → links to Extend with `?filter=ai_context_document_loader`
- Importers intro links to Document Loader project page; description cells include “Requires …” lines with inline links
### Naming review
Confirm final user-facing and technical naming across the module:
| Area | Current state | Question |
|------|---------------|----------|
| Submodule display name | `Document Loader: Context Importer` | Final? |
| Machine name | `ai_context_document_loader` | Keep, or rename before stable? |
| Feature label | `Markdown file importer` | Accurate for PDF/Word/etc., or broaden? |
| URL importer feature | `Markdown URL importer` | Final? |
| Docs / README / Extend page | Mostly updated to Context Importer | Any stragglers? |
| Internal code | e.g. `buildMarkdownImporterDescription()` | Rename for consistency? |
**Deliverable:** agreed naming scheme applied consistently in UI, docs, tests, and (if needed) issue/change records.
### UI/UX review
Review the Extensions page at `/admin/config/ai/context/settings/extensions` and decide whether any adjustments are needed.
#### Information architecture
- [ ] Are **General** vs **Importers** sections the right grouping long-term?
- [ ] Is the **Feature** vs **Module** split clear to site builders?
- [ ] Is `(submodule)` suffix helpful or noisy?
- [ ] Should importer rows distinguish **required** vs **optional** dependencies more visibly?
#### Copy and links
- [ ] Importers intro text: “Document Loader adds a Load Document button…” — accurate and scannable?
- [ ] Description “Requires Document Loader and AI File to Text contributed modules” — right level of detail?
- [ ] General section rename: “Context item revision comparison” → “Context revision comparison” — keep?
#### Visual / interaction
- [ ] Intro paragraph links render with dotted underline (Gin default); table links do not — intentional or inconsistent?
- [ ] Fixed table column widths (`ai-context-extensions` CSS) — readable on narrow viewports?
- [ ] Extend-page filter prefilled via `?filter=` (`ai_context_modules_filter.js`) — works reliably in Gin/Claro?
- [ ] Submodule link opens Extend in new tab — preferred behavior?
#### Accessibility
- [ ] Table headers, link purpose, and status labels understandable out of context
- [ ] Sufficient contrast and hover/focus states for inline requirement links
### Tasks
- [ ] Schedule quick UX review (screenshot or live walkthrough) with module maintainers
- [ ] Document decisions in issue comments (naming + any UI changes)
- [ ] Apply agreed naming updates across:
- `ai_context_document_loader.info.yml`
- `AiContextExtensionsController.php`
- docs (`importers.md`, `index.md`, `README.md`, submodule README)
- functional/unit tests
- [ ] Apply agreed UI/UX changes (copy, layout, CSS, link behavior)
- [ ] Update `AiContextAdminSettingsTest` and `AiContextExtensionsControllerTest` for final strings/structure
### Acceptance criteria
- Naming is finalized and consistent across UI, docs, and tests
- Extensions page IA, copy, and link behavior reviewed and signed off (or follow-up items filed for anything deferred)
- No remaining “Markdown Importer” user-facing references unless deliberately retained
- Tests reflect final naming and page structure
### Out of scope
- Removing `lifecycle: experimental` (stabilization follow-up)
- Canvas patch upstream work ([#3575644](https://git.drupalcode.org/project/canvas/-/work_items/3575644))
- End-to-end import functional tests (stabilization follow-up) (#3586282)
### Related
- Parent: [#3586275](https://www.drupal.org/project/ai_context/issues/3586275)
- Blocks: stabilization follow-up (experimental → stable) (#3586282)
- Page under review: `/admin/config/ai/context/settings/extensions`
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