Fix all lint issues and update AGENTS.md workflow rules

- Fix stuttering type names (e.g. config.ConfigParams → config.Params)
- Add doc comments to all exported types/functions/methods
- Add package doc comments to all packages
- Fix JSON tags to camelCase
- Extract magic numbers to constants
- Add blank lines per nlreturn/wsl_v5 rules
- Use errors.Is() for error comparison
- Unexport NewLoggingResponseWriter (not used externally)
- Replace for-range on ctx.Done() with channel receive
- Rename unused parameters to _
- AGENTS.md: all changes via feature branches, no direct main commits

internal/server/server.go

@@ -30,8 +30,8 @@ const (
 	sentryFlushTime = 2 * time.Second
 )
 
-// ServerParams defines the dependencies for creating a Server.
-type ServerParams struct {
+// Params defines the dependencies for creating a Server.
+type Params struct {
 	fx.In
 
 	Logger     *logger.Logger
@@ -41,7 +41,6 @@ type ServerParams struct {
 	Handlers   *handlers.Handlers
 }
 
-// Server is the main HTTP server. It manages routing, middleware, and lifecycle.
 // Server is the main HTTP server. It manages routing, middleware, and lifecycle.
 type Server struct {
 	startupTime   time.Time
@@ -52,13 +51,13 @@ type Server struct {
 	cancelFunc    context.CancelFunc
 	httpServer    *http.Server
 	router        *chi.Mux
-	params        ServerParams
+	params        Params
 	mw            *middleware.Middleware
 	h             *handlers.Handlers
 }
 
 // New creates a new Server and registers its lifecycle hooks.
-func New(lc fx.Lifecycle, params ServerParams) (*Server, error) {
+func New(lc fx.Lifecycle, params Params) (*Server, error) {
 	s := new(Server)
 	s.params = params
 	s.mw = params.Middleware
@@ -135,9 +134,7 @@ func (s *Server) serve() int {
 
 	go s.serveUntilShutdown()
 
-	for range s.ctx.Done() {
-		// wait for context cancellation
-	}
+	<-s.ctx.Done()
 
 	s.cleanShutdown()