diff --git a/frontend/private-device-data.js b/frontend/private-device-data.js
index 6811723..55e0d74 100644
--- a/frontend/private-device-data.js
+++ b/frontend/private-device-data.js
@@ -54,6 +54,7 @@
     await stopWorkerOutbox();
     await deletePrivateDatabase('stackchain-background-outbox-v1');
     await deletePrivateDatabase('stackchain-offline-work-v2');
+    await deletePrivateDatabase('stackchain-unfiled-captures-v1');
     const keys = await caches?.keys?.() || [];
     await Promise.all(
       keys.filter(key => key.startsWith('stackchain-dashboard-')).map(key => caches.delete(key))
diff --git a/frontend/service-worker.js b/frontend/service-worker.js
index b7efc84..f85ac11 100644
--- a/frontend/service-worker.js
+++ b/frontend/service-worker.js
@@ -117,8 +117,21 @@ async function withSessionCsrf(work) {
   }
 }
 
+async function deletePrivateDatabase(name) {
+  if (!indexedDB) return;
+  await new Promise((resolve, reject) => {
+    let request;
+    try { request = indexedDB.deleteDatabase(name); }
+    catch (error) { reject(error); return; }
+    request.onsuccess = () => resolve();
+    request.onerror = () => reject(request.error || new Error('IndexedDB deletion failed.'));
+    request.onblocked = () => reject(new Error('IndexedDB deletion was blocked.'));
+  });
+}
+
 async function purgeRevokedSessionData() {
   await issueSync.purge();
+  await deletePrivateDatabase('stackchain-unfiled-captures-v1');
   const keys = await caches.keys();
   await Promise.all(
     keys.filter(key => key.startsWith('stackchain-dashboard-')).map(key => caches.delete(key))
@@ -155,6 +168,7 @@ async function offlineLeaseState(cache) {
 
 async function expiredOfflineResponse() {
   await issueSync.purge();
+  await deletePrivateDatabase('stackchain-unfiled-captures-v1');
   const keys = await caches.keys();
   await Promise.all(
     keys.filter(key => key.startsWith('stackchain-dashboard-')).map(key => caches.delete(key))
@@ -269,6 +283,7 @@ self.addEventListener('message', event => {
   if (event.data?.type === 'stackchain-purge-outbox') event.waitUntil((async () => {
     try {
       await issueSync.purge();
+      await deletePrivateDatabase('stackchain-unfiled-captures-v1');
       event.ports?.[0]?.postMessage({ ok: true });
     } catch (error) {
       event.ports?.[0]?.postMessage({ ok: false, error: String(error?.message || 'Outbox purge failed.') });
diff --git a/frontend/session.js b/frontend/session.js
index d16452f..c4b5727 100644
--- a/frontend/session.js
+++ b/frontend/session.js
@@ -456,6 +456,7 @@
       await stopWorkerOutbox();
       await deletePrivateDatabase('stackchain-background-outbox-v1');
       await deletePrivateDatabase('stackchain-offline-work-v2');
+      await deletePrivateDatabase('stackchain-unfiled-captures-v1');
     } catch (_error) {
       const error = new Error('Could not clear private queued work from this device.');
       onClearError(error);
diff --git a/tests/test_dashboard_session_frontend.py b/tests/test_dashboard_session_frontend.py
index 29d832b..7965d19 100644
--- a/tests/test_dashboard_session_frontend.py
+++ b/tests/test_dashboard_session_frontend.py
@@ -348,7 +348,8 @@ process.stdout.write(JSON.stringify(state));
 
     assert result["deletedAtIdle"] == []
     assert result["deletedDatabases"] == [
-        "stackchain-background-outbox-v1", "stackchain-offline-work-v2"
+        "stackchain-background-outbox-v1", "stackchain-offline-work-v2",
+        "stackchain-unfiled-captures-v1",
     ]
     assert result["remaining"] == ["gitea.preference"]
     assert result["replaced"] == [
@@ -373,7 +374,8 @@ process.stdout.write(JSON.stringify(state));
     assert result["valid"] is False
     assert result["remaining"] == ["gitea.preference"]
     assert result["deletedDatabases"] == [
-        "stackchain-background-outbox-v1", "stackchain-offline-work-v2"
+        "stackchain-background-outbox-v1", "stackchain-offline-work-v2",
+        "stackchain-unfiled-captures-v1",
     ]
     assert result["deletedCaches"] == ["stackchain-dashboard-shell-v15"]
     assert result["replaced"] == ["/dashboard/login?reason=session-expired"]
@@ -503,7 +505,8 @@ process.stdout.write(JSON.stringify(state));
     ]
     assert result["remaining"] == ["gitea.preference"]
     assert result["deletedDatabases"] == [
-        "stackchain-background-outbox-v1", "stackchain-offline-work-v2"
+        "stackchain-background-outbox-v1", "stackchain-offline-work-v2",
+        "stackchain-unfiled-captures-v1",
     ]
     assert result["deletedCaches"] == ["stackchain-dashboard-shell-v15"]
     assert result["workerMessages"] == [{"type": "stackchain-purge-outbox"}]
@@ -525,7 +528,8 @@ process.stdout.write(JSON.stringify(state));
 
     assert result["remaining"] == ["gitea.preference"]
     assert result["deletedDatabases"] == [
-        "stackchain-background-outbox-v1", "stackchain-offline-work-v2"
+        "stackchain-background-outbox-v1", "stackchain-offline-work-v2",
+        "stackchain-unfiled-captures-v1",
     ]
     assert result["deletedCaches"] == ["stackchain-dashboard-shell-v15"]
     assert result["workerMessages"] == [{"type": "stackchain-purge-outbox"}]
@@ -620,7 +624,8 @@ process.stdout.write(JSON.stringify(state));
     assert "stackchain.private" in result["removed"]
     assert result["remaining"] == ["gitea.preference"]
     assert result["deletedDatabases"] == [
-        "stackchain-background-outbox-v1", "stackchain-offline-work-v2"
+        "stackchain-background-outbox-v1", "stackchain-offline-work-v2",
+        "stackchain-unfiled-captures-v1",
     ]
     assert result["deletedCaches"] == ["stackchain-dashboard-shell-v15"]
     assert result["assigned"] == "/dashboard/login"
diff --git a/tests/test_private_device_data.py b/tests/test_private_device_data.py
index 43d8c0f..da53942 100644
--- a/tests/test_private_device_data.py
+++ b/tests/test_private_device_data.py
@@ -46,6 +46,7 @@ const clear = createPrivateDeviceDataPurger({{
     assert state["databases"] == [
         "stackchain-background-outbox-v1",
         "stackchain-offline-work-v2",
+        "stackchain-unfiled-captures-v1",
     ]
     assert state["caches"] == ["stackchain-dashboard-shell-v37"]
     assert state["workerMessages"] == [{"type": "stackchain-purge-outbox"}]
diff --git a/tests/test_service_worker.py b/tests/test_service_worker.py
index f049c0a..7ae4df5 100644
--- a/tests/test_service_worker.py
+++ b/tests/test_service_worker.py
@@ -13,7 +13,7 @@ def run_worker_scenario(scenario: str) -> dict:
 const fs = require('fs');
 const vm = require('vm');
 const listeners = {{}};
-const state = {{ added: [], deleted: [], claimed: false, skipped: false, fetches: [], puts: [], backgroundFlushes: 0, backgroundResumes: 0, outboxPurges: 0, outboxLifecycle: [], notifications: [], focused: [], opened: [], failFetch: false, stallFetch: false, lateFetch: false, fetchAborted: false, fetchStatus: 200, fetchRedirected: false, cachedBody: null }};
+const state = {{ added: [], deleted: [], deletedDatabases: [], claimed: false, skipped: false, fetches: [], puts: [], backgroundFlushes: 0, backgroundResumes: 0, outboxPurges: 0, outboxLifecycle: [], notifications: [], focused: [], opened: [], failFetch: false, stallFetch: false, lateFetch: false, fetchAborted: false, fetchStatus: 200, fetchRedirected: false, cachedBody: null }};
 const storedResponses = new Map();
 storedResponses.set(
   'https://forge.example/dashboard/__offline-session-lease',
@@ -58,6 +58,12 @@ const context = {{
     }},
   }},
   importScripts: () => {{}},
+  indexedDB: {{deleteDatabase:name=>{{
+    state.deletedDatabases.push(name);
+    const request={{}};
+    queueMicrotask(()=>request.onsuccess?.());
+    return request;
+  }}}},
   caches: {{
     open: async () => cache,
     keys: async () => ['stackchain-dashboard-old', 'another-app-cache'],
@@ -244,6 +250,9 @@ def test_revoked_background_session_purges_worker_data_and_notifies_dashboard_cl
 
     assert result["outcome"] == {"status": 401, "code": "session_revoked"}
     assert result["state"]["outboxPurges"] == 1
+    assert result["state"]["deletedDatabases"] == [
+        "stackchain-unfiled-captures-v1"
+    ]
     assert result["state"]["deleted"] == ["stackchain-dashboard-old"]
     assert result["state"]["clientMessages"] == [
         {"type": "stackchain-session-revoked"}
@@ -331,6 +340,9 @@ def test_device_purge_message_stops_worker_outbox_and_acknowledges_completion():
     )
 
     assert result["state"]["outboxPurges"] == 1
+    assert result["state"]["deletedDatabases"] == [
+        "stackchain-unfiled-captures-v1"
+    ]
     assert result["replies"] == [{"ok": True}]
 
 
@@ -773,6 +785,9 @@ def test_expired_offline_lease_purges_private_worker_data_and_refuses_cached_she
     assert result["status"] == 401
     assert result["body"] == "Your Stackchain session expired. Reconnect and sign in."
     assert result["state"]["outboxPurges"] == 1
+    assert result["state"]["deletedDatabases"] == [
+        "stackchain-unfiled-captures-v1"
+    ]
     assert result["state"]["deleted"] == ["stackchain-dashboard-old"]
     assert "private cached dashboard" not in result["body"]