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/sidebars.ts

@@ -41,6 +41,7 @@ const sidebars: SidebarsConfig = {
         "extractors/overview",
         "extractors/gradcracker",
         "extractors/jobspy",
+        "extractors/adzuna",
         "extractors/manual",
         "extractors/ukvisajobs",
       ],