feat(quota): add tunnel traffic quota with daily/monthly limits (#291) (#308)

Implement per-tunnel traffic quota feature:
- Add TunnelQuota model with daily/monthly usage tracking
- Integrate quota enforcement into flow accumulation path
- Pause forwards and disable tunnel when quota exceeded
- Block new forward creation/resume when tunnel quota disabled
- Auto-reset daily/monthly windows at 00:05 via maintenance job
- Add manual reset API endpoint for admins
- Include quota config in tunnel backup/restore
- Add frontend UI for quota settings and usage display

Entire-Checkpoint: e629b27ca437

vite-frontend/src/api/index.ts

@@ -18,6 +18,7 @@ import type {
   UserMutationPayload,
   NodeMutationPayload,
   TunnelMutationPayload,
+  TunnelQuotaResetPayload,
   UserTunnelAssignPayload,
   UserTunnelListQuery,
   UserTunnelRemovePayload,
@@ -117,6 +118,8 @@ export const getTunnelById = (id: number) =>
   Network.post<TunnelApiItem>("/tunnel/get", { id });
 export const updateTunnel = (data: TunnelMutationPayload) =>
   Network.post("/tunnel/update", data);
+export const resetTunnelQuota = (data: TunnelQuotaResetPayload) =>
+  Network.post("/tunnel/quota/reset", data);
 export const deleteTunnel = (id: number) =>
   Network.post("/tunnel/delete", { id });
 export const diagnoseTunnel = (tunnelId: number) =>

vite-frontend/src/api/types.ts

@@ -36,6 +36,19 @@ export interface TunnelApiItem {
   name: string;
   type: number;
   status: number;
+  flow?: number;
+  trafficRatio?: number;
+  inIp?: string;
+  ipPreference?: string;
+  inNodeId?: TunnelChainNodePayload[];
+  outNodeId?: TunnelChainNodePayload[];
+  chainNodes?: TunnelChainNodePayload[][];
+  dailyQuotaGB?: number;
+  monthlyQuotaGB?: number;
+  dailyUsedBytes?: number;
+  monthlyUsedBytes?: number;
+  disabledByQuota?: number;
+  quotaDisabledAt?: number;
   entryNodeId: number;
   exitNodeId: number;
   inx?: number;
@@ -250,6 +263,8 @@ export interface TunnelMutationPayload {
   status?: number;
   flow?: number;
   trafficRatio?: number;
+  dailyQuotaGB?: number;
+  monthlyQuotaGB?: number;
   inIp?: string;
   ipPreference?: string;
   inNodeId?: TunnelChainNodePayload[];
@@ -257,6 +272,11 @@ export interface TunnelMutationPayload {
   chainNodes?: TunnelChainNodePayload[][];
 }
 
+export interface TunnelQuotaResetPayload {
+  tunnelId: number;
+  scope?: "daily" | "monthly" | "all";
+}
+
 export interface UserTunnelAssignPayload {
   userId?: number;
   id?: number;