feat: add custom 404 page with playful inline artwork and prose

internal/server/server.go

@@ -28,6 +28,15 @@ func ProvideRouter(cfg config.Config, htmlRender render.HTMLRender) *gin.Engine
 	}
 	r := gin.New()
 	r.Use(CORSMiddlewareWithConfig(cfg), RequestContextMiddleware(), audit.ContextMiddleware(), RequestLogger(), gin.Recovery())
+	r.NoRoute(func(c *gin.Context) {
+		if acceptsHTML(c) {
+			c.HTML(http.StatusNotFound, "not_found.gohtml", gin.H{
+				"CurrentPath": c.Request.URL.Path,
+			})
+			return
+		}
+		c.JSON(http.StatusNotFound, ErrorResponse{Error: "Not found"})
+	})
 	r.Static("/static", "./static")
 	r.Static("/dist", "./dist")
 	r.GET("/debug/pprof", gin.WrapH(http.DefaultServeMux))