Fix router rule config chain alignment

[xiaobaicai66695]

What

Backend:

• Write Zookeeper rule configs under /dubbo/config/dubbo/{ruleName} so dubbo-go's default ZK config-center group can consume admin-issued router rules.
• Keep legacy /dubbo/config/{ruleName} compatibility for discovery parsing and deletion/migration cleanup.
• Add tests for grouped ZK rule paths and config node-name parsing.

Frontend:

• Align tag-rule creation from form and YAML views to generate {application}.tag-router, which is the key dubbo-go tag router subscribes to.
• Add Vitest coverage for tag rule form/YAML rule-name generation.

Why

The admin console could persist router rules, but the Zookeeper path/key contract did not fully match dubbo-go's dynamic config subscriptions. This fixes the rule delivery chain first, before expanding the remaining router capability gaps such as a complete admin affinity-rule UI/API flow.

Validation

• make fmt
• go test ./pkg/governor/zk ./pkg/discovery/zk ./pkg/console/service
• go test ./...
• cd ui-vue3 && yarn test addByFormView.spec.ts addByYAMLView.spec.ts updateByFormView.spec.ts
• cd ui-vue3 && yarn vite build

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud