Initial commit with server startup infrastructure

Core infrastructure:
- Uber fx dependency injection
- Chi router with middleware stack
- SQLite database with embedded migrations
- Embedded templates and static assets
- Structured logging with slog

Features implemented:
- Authentication (login, logout, session management, argon2id hashing)
- App management (create, edit, delete, list)
- Deployment pipeline (clone, build, deploy, health check)
- Webhook processing for Gitea
- Notifications (ntfy, Slack)
- Environment variables, labels, volumes per app
- SSH key generation for deploy keys

Server startup:
- Server.Run() starts HTTP server on configured port
- Server.Shutdown() for graceful shutdown
- SetupRoutes() wires all handlers with chi router

internal/server/server.go

@@ -0,0 +1,121 @@
+// Package server provides the HTTP server.
+package server
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+	"go.uber.org/fx"
+
+	"git.eeqj.de/sneak/upaas/internal/config"
+	"git.eeqj.de/sneak/upaas/internal/globals"
+	"git.eeqj.de/sneak/upaas/internal/handlers"
+	"git.eeqj.de/sneak/upaas/internal/logger"
+	"git.eeqj.de/sneak/upaas/internal/middleware"
+)
+
+// Params contains dependencies for Server.
+type Params struct {
+	fx.In
+
+	Logger     *logger.Logger
+	Globals    *globals.Globals
+	Config     *config.Config
+	Middleware *middleware.Middleware
+	Handlers   *handlers.Handlers
+}
+
+// shutdownTimeout is how long to wait for graceful shutdown.
+const shutdownTimeout = 30 * time.Second
+
+// readHeaderTimeout is the maximum duration for reading request headers.
+const readHeaderTimeout = 10 * time.Second
+
+// Server is the HTTP server.
+type Server struct {
+	startupTime time.Time
+	port        int
+	log         *slog.Logger
+	router      *chi.Mux
+	httpServer  *http.Server
+	params      Params
+	mw          *middleware.Middleware
+	handlers    *handlers.Handlers
+}
+
+// New creates a new Server instance.
+func New(lifecycle fx.Lifecycle, params Params) (*Server, error) {
+	srv := &Server{
+		port:     params.Config.Port,
+		log:      params.Logger.Get(),
+		params:   params,
+		mw:       params.Middleware,
+		handlers: params.Handlers,
+	}
+
+	lifecycle.Append(fx.Hook{
+		OnStart: func(_ context.Context) error {
+			srv.startupTime = time.Now()
+			go srv.Run()
+
+			return nil
+		},
+		OnStop: func(ctx context.Context) error {
+			return srv.Shutdown(ctx)
+		},
+	})
+
+	return srv, nil
+}
+
+// Run starts the HTTP server.
+func (s *Server) Run() {
+	s.SetupRoutes()
+
+	listenAddr := fmt.Sprintf(":%d", s.port)
+	s.httpServer = &http.Server{
+		Addr:              listenAddr,
+		Handler:           s,
+		ReadHeaderTimeout: readHeaderTimeout,
+	}
+
+	s.log.Info("http server starting", "addr", listenAddr)
+
+	err := s.httpServer.ListenAndServe()
+	if err != nil && !errors.Is(err, http.ErrServerClosed) {
+		s.log.Error("http server error", "error", err)
+	}
+}
+
+// Shutdown gracefully shuts down the server.
+func (s *Server) Shutdown(ctx context.Context) error {
+	if s.httpServer == nil {
+		return nil
+	}
+
+	s.log.Info("shutting down http server")
+
+	shutdownCtx, cancel := context.WithTimeout(ctx, shutdownTimeout)
+	defer cancel()
+
+	err := s.httpServer.Shutdown(shutdownCtx)
+	if err != nil {
+		s.log.Error("http server shutdown error", "error", err)
+
+		return fmt.Errorf("shutting down http server: %w", err)
+	}
+
+	s.log.Info("http server stopped")
+
+	return nil
+}
+
+// ServeHTTP implements http.Handler.
+func (s *Server) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
+	s.router.ServeHTTP(writer, request)
+}