chore: import Local-Cursor v1.1.8 source snapshot

Includes the current working directory changes. Historical commits and release binaries are excluded to limit Gitea storage.
Source base: d7515973fbfd6dd2001fa156c483455b8081c7cb

internal/backend/server/local.go

@@ -0,0 +1,38 @@
+package server
+
+import (
+	"net/http"
+
+	"cursor/internal/logger"
+)
+
+func Health() HandlerFunc {
+	return func(ctx *Context) error {
+		if ctx == nil || ctx.Writer == nil {
+			return nil
+		}
+		if ctx.Request != nil && ctx.Request.Method != http.MethodGet {
+			http.Error(ctx.Writer, "method not allowed", http.StatusMethodNotAllowed)
+			return nil
+		}
+		if ctx.Request != nil {
+			logger.Infof("内置后端 healthz 命中 remote_addr=%s user_agent=%s", ctx.Request.RemoteAddr, ctx.Request.UserAgent())
+		}
+		ctx.Writer.WriteHeader(http.StatusOK)
+		_, _ = ctx.Writer.Write([]byte("ok"))
+		return nil
+	}
+}
+
+func HTTPHandlerAction(handler http.Handler) HandlerFunc {
+	return func(ctx *Context) error {
+		if ctx == nil {
+			return nil
+		}
+		if handler == nil {
+			return nil
+		}
+		handler.ServeHTTP(ctx.Writer, ctx.Request)
+		return nil
+	}
+}