feat: add empty address cleanup feature (#765)

* feat: add empty address cleanup feature

Add functionality to clean up email addresses that have never received any emails and were created more than N days ago.

Changes:
- Add emptyAddress cleanup type to backend cleanup logic
- Add enableEmptyAddressAutoCleanup and cleanEmptyAddressDays to CleanupSettings model
- Add scheduled task support for auto-cleanup of empty addresses
- Add UI controls in Maintenance page for manual and auto cleanup
- Add i18n support (English and Chinese translations)

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Co-Authored-By: Claude <noreply@anthropic.com>

* chore: update dependencies

Update package.json and lock files across frontend, worker, pages, and vitepress-docs

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* docs: update CHANGELOG for empty address cleanup feature

Add entry for new maintenance page feature to clean up email addresses with no emails older than N days

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

worker/src/common.ts

@@ -273,6 +273,13 @@ export const cleanup = async (
                 DELETE FROM sendbox WHERE created_at < datetime('now', '-${cleanDays} day')`
             ).run();
             break;
+        case "emptyAddress":
+            // Delete addresses that have no emails and were created more than N days ago
+            await batchDeleteAddressWithData(
+                c,
+                `name NOT IN (SELECT DISTINCT address FROM raw_mails WHERE address IS NOT NULL) AND created_at < datetime('now', '-${cleanDays} day')`
+            )
+            break;
         default:
             throw new Error("Invalid cleanType")
     }

worker/src/models/index.ts

@@ -48,6 +48,8 @@ export type CleanupSettings = {
     cleanInactiveAddressDays: number;
     enableUnboundAddressAutoCleanup: boolean | undefined;
     cleanUnboundAddressDays: number;
+    enableEmptyAddressAutoCleanup: boolean | undefined;
+    cleanEmptyAddressDays: number;
 }
 
 export class GeoData {

worker/src/scheduled.ts

@@ -57,4 +57,11 @@ export async function scheduled(event: ScheduledEvent, env: Bindings, ctx: any)
             autoCleanupSetting.cleanUnboundAddressDays
         );
     }
+    if (autoCleanupSetting.enableEmptyAddressAutoCleanup) {
+        await cleanup(
+            { env: env, } as Context<HonoCustomType>,
+            "emptyAddress",
+            autoCleanupSetting.cleanEmptyAddressDays
+        );
+    }
 }