Fix: Limit stats retention to 7 days

worker/src/components/dashboard/dashboard-shell.tsx

@@ -4,7 +4,7 @@ import { Button } from "@/components/ui/button";
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
 
-type WindowKey = "24h" | "7d" | "30d";
+type WindowKey = "24h" | "7d";
 
 type PacketTypeEntry = {
   key: string;
@@ -91,7 +91,6 @@ type DashboardResponse = {
 const WINDOW_OPTIONS: Array<{ key: WindowKey; label: string }> = [
   { key: "24h", label: "24h" },
   { key: "7d", label: "7 days" },
-  { key: "30d", label: "30 days" },
 ];
 
 const PACKET_TYPE_INFO: Record<string, { title: string; summary: string }> = {

worker/worker/index.ts

@@ -4,6 +4,7 @@ import {
   extractCfGeo,
   jsonHeaders,
   loadDashboardSummary,
+  purgeOldReports,
   validateIngestPayload,
   type Env,
   type IngestPayload,
@@ -82,6 +83,9 @@ async function handleIngest(request: Request, env: Env): Promise<Response> {
   const result = await env.DB.prepare(REPORT_INSERT_SQL).bind(...values).run();
   const changes = Number((result.meta as { changes?: number }).changes ?? 0);
 
+  // Purge reports older than 7 days (best-effort, don't block response)
+  void purgeOldReports(env).catch(() => {});
+
   return Response.json(
     {
       ok: true,
@@ -107,7 +111,7 @@ async function handleDashboard(request: Request, env: Env): Promise<Response> {
   const url = new URL(request.url);
   const windowParam = url.searchParams.get("window");
   const summary = await loadDashboardSummary(env, windowParam);
-  const cacheTtl = windowParam === "7d" || windowParam === "30d" ? 86400 : 60;
+  const cacheTtl = windowParam === "7d" ? 86400 : 60;
   return Response.json(
     {
       generatedAt: new Date().toISOString(),

worker/worker/stats.ts

@@ -85,13 +85,10 @@ const WINDOW_OPTIONS = {
     durationMs: 7 * 24 * 60 * 60 * 1000,
     bucket: "day",
   },
-  "30d": {
-    label: "Last 30 days",
-    durationMs: 30 * 24 * 60 * 60 * 1000,
-    bucket: "day",
-  },
 } as const;
 
+const RETENTION_MS = 7 * 24 * 60 * 60 * 1000;
+
 export const jsonHeaders = {
   "content-type": "application/json; charset=utf-8",
 } as const;
@@ -269,8 +266,7 @@ export function buildWindowFilter(
 ): WindowFilter {
   const windowKey =
     requestedWindow === "24h" ||
-    requestedWindow === "7d" ||
-    requestedWindow === "30d"
+    requestedWindow === "7d"
       ? requestedWindow
       : "24h";
   const option = WINDOW_OPTIONS[windowKey];
@@ -282,6 +278,19 @@ export function buildWindowFilter(
   };
 }
 
+export async function purgeOldReports(
+  env: Env,
+  now: Date = new Date(),
+): Promise<number> {
+  const cutoff = new Date(now.getTime() - RETENTION_MS).toISOString();
+  const result = await env.DB.prepare(
+    "DELETE FROM reports WHERE window_end < ?",
+  )
+    .bind(cutoff)
+    .run();
+  return Number((result.meta as { changes?: number }).changes ?? 0);
+}
+
 export async function loadDashboardSummary(
   env: Env,
   requestedWindow: string | null,