Add UI-configurable InfrastructureSettings with DB+env fallback for all features

fix: prevent SurrealDB injection via order_by and unparameterized queries

feat(podcasts): model registry integration, credential passthrough & new features (#632)

fix: turn the embedding field into optional (#557)

feat: credential-based API key management (#477) (#540)

perf: improve source listing speed by 20-30x (#436)

Feat/localization tests docker (#371)

refactor: reorganize folder structure for better maintainability

fix: add UTF-8 encoding for async migrations file reading (#279)

Version 1 (#160)

Api podcast migration (#93)