security: stop tracking env files; admin gate via VITE_SITE_ADMIN_GATE; Redis/cache/docs

Remove InfoGenie-frontend and Go .env from version control; add .env.example templates; ignore .claude local settings. Admin UI reads site gate from env only. Note: rotate secrets if repo history was ever public.

Made-with: Cursor

infogenie-backend-go/internal/router/router.go

@@ -9,6 +9,8 @@ import (
 
 	"github.com/gin-gonic/gin"
 
+	"infogenie-backend/config"
+	"infogenie-backend/internal/cache"
 	"infogenie-backend/internal/database"
 	"infogenie-backend/internal/handler"
 	"infogenie-backend/internal/middleware"
@@ -91,6 +93,15 @@ func Setup(r *gin.Engine) {
 			overall = "degraded"
 		}
 
+		redisHealth := gin.H{"enabled": false}
+		if config.Cfg != nil && config.Cfg.Redis.Enabled {
+			if err := cache.Ping(ctx); err != nil {
+				redisHealth = gin.H{"enabled": true, "ok": false, "error": err.Error()}
+			} else {
+				redisHealth = gin.H{"enabled": true, "ok": true}
+			}
+		}
+
 		c.JSON(http.StatusOK, gin.H{
 			"status":    overall,
 			"timestamp": time.Now().Format(time.RFC3339),
@@ -99,6 +110,7 @@ func Setup(r *gin.Engine) {
 				"ok":     mysqlOK,
 				"status": dbStatus,
 			},
+			"redis": redisHealth,
 			"backend_api": gin.H{
 				"ok": true,
 			},
@@ -136,6 +148,7 @@ func Setup(r *gin.Engine) {
 	r.PUT("/api/admin/site/ai-model-disabled", siteH.PutAIModelDisabled)
 	r.GET("/api/admin/site/ai-runtime", aiRtH.GetAIRuntime)
 	r.PUT("/api/admin/site/ai-runtime", aiRtH.PutAIRuntime)
+	r.GET("/api/admin/site/diagnostics", siteH.GetDiagnostics)
 
 	ai := r.Group("/api/aimodelapp")
 	{