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

.github/workflows/ci.yml

@@ -49,7 +49,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        project: [orchestrator, gradcracker-extractor, ukvisajobs-extractor]
+        project:
+          - orchestrator
+          - adzuna-extractor
+          - gradcracker-extractor
+          - ukvisajobs-extractor
     steps:
       - uses: actions/checkout@v4
       - name: Setup Node