feat: add Adzuna extractor with orchestrator integration (#177)

* feat(settings): add adzuna source fields and country compatibility

* feat(discovery): integrate adzuna extractor into pipeline

* feat(client): wire adzuna in source selection and run budgeting

* docs(extractors): add adzuna guide and configuration notes

* chore(workspaces): register adzuna extractor in lockfile

* fix(adzuna): run extractor via npm script instead of npx

* fix(adzuna): execute extractor via node+tsx without shell

* fix(adzuna): prefer npm run start without shell, fallback to tsx

* fix(docker): include adzuna extractor workspace in image

* chore(adzuna): reuse shared type-conversion utilities

* type-check adzuna

* formatting

* deeedooop

* better instructions

docs-site/docs/extractors/adzuna.md

@@ -0,0 +1,58 @@
+---
+id: adzuna
+title: Adzuna Extractor
+description: API-based Adzuna extraction with orchestrator ingestion and progress updates.
+sidebar_position: 6
+---
+
+## What it is
+
+Adzuna is an API-backed extractor implemented in two lean pieces:
+
+1. `extractors/adzuna/src/main.ts` fetches paginated Adzuna search results and writes `jobs.json`.
+2. `orchestrator/src/server/services/adzuna.ts` runs the extractor, parses progress lines, and maps rows into `CreateJobInput`.
+
+It de-duplicates in the existing repository path using `sourceJobId` fallback to `jobUrl`.
+
+## Why it exists
+
+Adzuna provides stable API discovery for countries that are not covered by UK-only sources. It adds a lower-maintenance source without introducing new API routes or UI sections.
+
+## How to use it
+
+1. Create an Adzuna developer account.
+2. Open [Adzuna Access Details](https://developer.adzuna.com/admin/access_details).
+3. Copy your **App ID** and **App Key**.
+4. In Job Ops, open **Settings** and paste them into `Adzuna App ID` and `Adzuna App Key` under **Environment & Accounts**.
+5. In **Pipeline Run** (Automatic tab), select a compatible country and enable **Adzuna** in Sources.
+6. Start the run; Adzuna progress appears in the existing crawl progress stream.
+
+Default controls:
+
+- `ADZUNA_APP_ID`
+- `ADZUNA_APP_KEY`
+- `ADZUNA_MAX_JOBS_PER_TERM` (default `50`)
+
+Supported countries in this integration:
+
+- United Kingdom, United States, Austria, Australia, Belgium, Brazil, Canada, Switzerland, Germany, Spain, France, India, Italy, Mexico, Netherlands, New Zealand, Poland, Singapore, South Africa.
+
+## Common problems
+
+### Adzuna is disabled in source selection
+
+- `Adzuna App ID` and `Adzuna App Key` are missing from Settings (or env).
+
+### Adzuna is skipped for my selected country
+
+- The selected country is not in the supported list above.
+
+### Adzuna fails with authorization errors
+
+- Verify `ADZUNA_APP_ID` and `ADZUNA_APP_KEY` are valid and active in your Adzuna account.
+
+## Related pages
+
+- [Extractors Overview](/docs/next/extractors/overview)
+- [Pipeline Run](/docs/next/features/pipeline-run)
+- [Settings](/docs/next/features/settings)