feat(extractors): expand catalog, smoke coverage, and sourcing docs

Adds Arc.dev, BC T-Net, Eluta, iCIMS tenants, QAJobsBoard, and SmartRecruiters
manifests with registry/settings/UI wiring; registers full extractor list in
smoke-extractors and documents supplementary board access paths. Aligns Careerjet
v4 with the url query parameter and fixes strict typing in QAJobsBoard.

Co-authored-by: Cursor <cursoragent@cursor.com>

docs-site/docs/extractors/qajobsboard.md

@@ -0,0 +1,36 @@
+---
+id: qajobsboard
+title: QAJobsBoard Extractor
+description: QA and automation-focused listings via the board’s public JSON feed.
+sidebar_position: 16
+---
+
+## What it is
+
+[QAJobsBoard](https://www.qajobsboard.com) publishes postings through JobBoardly. The extractor calls:
+
+`GET https://qajobsboard.jobboardly.com/jobs.json`
+
+Implementation: `extractors/qajobsboard/manifest.ts`.
+
+## Why it exists
+
+Dense QA / SDET / automation signal versus generic boards; categories often reflect tooling (Playwright, Cypress, Selenium). Geography skews India-remote unless you combine region filtering downstream.
+
+## How to use it
+
+1. Enable **QAJobsBoard** in pipeline sources (no credentials).
+2. Set **`qajobsboardMaxJobsPerTerm`** (default `100`) to cap mapped rows after term filtering.
+3. Tune **`searchTerms`** for QA-focused phrases (`QA automation`, `SDET`, `Playwright`, etc.).
+4. Optional: narrow by geography using orchestrator city/country filters where applicable.
+
+## Common problems
+
+- **Few or no rows:** Terms may be too narrow; broaden titles or temporarily remove strict city filters.
+- **Irrelevant locales:** The feed is global; pair with geography or employer filters in your pipeline profile.
+
+## Related pages
+
+- [Extractors overview](/docs/next/extractors/overview)
+- [Canadian QA contracting firms](/docs/next/extractors/qa-contract-staffing-canada)
+- [Manual Import](/docs/next/extractors/manual)