Etherll 27b0a50a84 Studio: WIP — RAG preview UI, locator/auth refactor, tests, fixtures (pre-merge snapshot) ...

Snapshot taken before fast-forwarding feature/rag to origin and merging main.
Bundles in-flight work so the merge has a clean tree:

Frontend
- PDF preview panel (preview-panel, preview-pdf-view, preview-text-view,
  preview-unavailable) with lazy-rendered page thumbnail rail
- Resizable preview slot via useResizablePanelWidth hook (drag handle,
  localStorage persistence, viewport clamping)
- Neutral scrollbar + Source Excerpt card restyle (no brand-coloured rail)
- Preview-store + chat-adapter / rag-api / kb-detail wiring
- Frontend test harness (vitest.config, setupTests, biome update) and the
  paired __tests__ suites for preview, sources, document-row, chat-adapter,
  rag-api, knowledge-bases-tab, search-knowledge-base-tool-ui

Backend
- RAG locator + authorization modules with chunking / retrieval / tool /
  vector_store / studio_db updates
- Paired test_rag_* suites (authorization, locators, locator_backfill,
  locator_migration, preview_routes, preview_target_locators, source_identity)

Other
- tests/fixtures/rag-preview for preview route fixtures (sample.pdf,
  sample.txt, make_fixture_pdf.py)
- .gitignore + package(-lock).json adjustments for the new test runner

Will be squashed/reworked via interactive rebase after main is merged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-28 00:13:43 +03:00

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