Replace direct defers that ignored returned errors with explicit defer func() { _ = ... }() and use blank-assignment for Setenv/RemoveAll/Close to satisfy error-checking and ensure closures run. Convert several if-else chains to switch for clarity (status filter, test server path matching), switch strings.Replace to strings.ReplaceAll, and normalize some error/log message casing. These changes are minor refactors across handlers, services, database and tests to improve lint compliance and readability.
Bump Go versions in CI, Dockerfile and go.mod/toolchain to 1.25.x and update several module dependencies. Introduce rollbackTransaction(tx, context) and replace direct tx.Rollback() calls (including panic recovery) across handlers to centralize rollback logging/handling. Replace direct json.Unmarshal/Scan calls in tests with mustUnmarshalResponse/mustScan helpers. Add TrustedProxies to ServerConfig and configure Gin with SetTrustedProxies. Misc: adjust final Docker image (Alpine version and healthcheck command) and minor logging/formatting cleanups.
Introduce a standalone Traefik Manager mode and SPA: new internal/traefikmanager package (config, helpers, files, settings, runtime, handlers, server, types) with tests and supporting testdata; add a new React/TypeScript SPA under traefik-ui/ (components, pages, build config, tests). Update build & packaging: modify Dockerfile to build the traefik-ui app and include it in the final image, add new Makefile targets for building/running both UIs and modes, and add a traefik-manager service to docker-compose (with MODE env). Add runtime config loading and README docs for the new MODE, plus .gitignore entries for traefik-ui artifacts. Small updates to main.go and added traefik_mode.go.
