Initial scaffold: Go backend, React frontend, Docker Compose

- Go backend: config, db (PostgreSQL migrations), auth (argon2id + sessions),
  middleware (cookie sessions, RequireAuth), chi router, cmd/server
- React frontend: Vite + React 18 + TS + Tailwind + Gruvbox palette + terminal CSS
- Docker: compose.yml (Postgres, Valkey, minio, LiveKit, coturn, Caddy),
  livekit.yaml, Caddyfile, Dockerfile (multi-stage Go+Node+Alpine)
- .env.example, .gitignore, README.md

internal/middleware/session.go

@@ -0,0 +1,52 @@
+package middleware
+
+import (
+	"context"
+	"net/http"
+
+	"git.dustin.coffee/hobokenchicken/dumpsterChat/internal/config"
+)
+
+type contextKey string
+
+const UserContextKey contextKey = "user_id"
+
+type SessionStore interface {
+	GetUserIDByToken(ctx context.Context, token string) (string, error)
+}
+
+func Session(store SessionStore, cfg *config.Config) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			cookie, err := r.Cookie(cfg.Session.CookieName)
+			if err != nil {
+				next.ServeHTTP(w, r)
+				return
+			}
+
+			userID, err := store.GetUserIDByToken(r.Context(), cookie.Value)
+			if err != nil {
+				next.ServeHTTP(w, r)
+				return
+			}
+
+			ctx := context.WithValue(r.Context(), UserContextKey, userID)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		})
+	}
+}
+
+func UserIDFromContext(ctx context.Context) (string, bool) {
+	id, ok := ctx.Value(UserContextKey).(string)
+	return id, ok
+}
+
+func RequireAuth(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if _, ok := UserIDFromContext(r.Context()); !ok {
+			w.WriteHeader(http.StatusUnauthorized)
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}