* feat(shared): add glassdoor to job source model
* feat(jobspy): support glassdoor site in scraper and discovery
* feat(pipeline): include glassdoor in source selection and API schema
* feat(ui): add glassdoor toggle to jobspy settings and run estimates
* test/docs: cover glassdoor jobspy integration end-to-end
* fix(jobspy): make glassdoor always-on without settings toggle
* fix(jobspy): fallback glassdoor when location is country-level
* refactor(jobspy): drop direct pandas usage in wrapper
* feat(pipeline): gate glassdoor by supported countries
* fix(jobspy): restore pandas output and keep glassdoor disable copy
* fix(jobspy): map country-level glassdoor searches to city fallbacks
* feat(ui): require glassdoor city for country-level runs
